hermes-agent/hermes_cli/config.py

"""
Configuration management for Hermes Agent.

Config files are stored in ~/.hermes/ for easy access:
- ~/.hermes/config.yaml  - All settings (model, toolsets, terminal, etc.)
- ~/.hermes/.env         - API keys and secrets

This module provides:
- hermes config          - Show current configuration
- hermes config edit     - Open config in editor
- hermes config set      - Set a specific value
- hermes config wizard   - Re-run setup wizard
"""

import os
import platform
import re
import stat
import sys
import subprocess
import sys
import tempfile
from pathlib import Path
from typing import Dict, Any, Optional, List, Tuple

_IS_WINDOWS = platform.system() == "Windows"
_ENV_VAR_NAME_RE = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*$")

import yaml

from hermes_cli.colors import Colors, color
from hermes_cli.default_soul import DEFAULT_SOUL_MD


# =============================================================================
# Config paths
# =============================================================================

def get_hermes_home() -> Path:
    """Get the Hermes home directory (~/.hermes)."""
    return Path(os.getenv("HERMES_HOME", Path.home() / ".hermes"))

def get_config_path() -> Path:
    """Get the main config file path."""
    return get_hermes_home() / "config.yaml"

def get_env_path() -> Path:
    """Get the .env file path (for API keys)."""
    return get_hermes_home() / ".env"

def get_project_root() -> Path:
    """Get the project installation directory."""
    return Path(__file__).parent.parent.resolve()

def _secure_dir(path):
    """Set directory to owner-only access (0700). No-op on Windows."""
    try:
        os.chmod(path, 0o700)
    except (OSError, NotImplementedError):
        pass


def _secure_file(path):
    """Set file to owner-only read/write (0600). No-op on Windows."""
    try:
        if os.path.exists(str(path)):
            os.chmod(path, 0o600)
    except (OSError, NotImplementedError):
        pass


def _ensure_default_soul_md(home: Path) -> None:
    """Seed a default SOUL.md into HERMES_HOME if the user doesn't have one yet."""
    soul_path = home / "SOUL.md"
    if soul_path.exists():
        return
    soul_path.write_text(DEFAULT_SOUL_MD, encoding="utf-8")
    _secure_file(soul_path)


def ensure_hermes_home():
    """Ensure ~/.hermes directory structure exists with secure permissions."""
    home = get_hermes_home()
    home.mkdir(parents=True, exist_ok=True)
    _secure_dir(home)
    for subdir in ("cron", "sessions", "logs", "memories"):
        d = home / subdir
        d.mkdir(parents=True, exist_ok=True)
        _secure_dir(d)
    _ensure_default_soul_md(home)


# =============================================================================
# Config loading/saving
# =============================================================================

DEFAULT_CONFIG = {
    "model": "anthropic/claude-opus-4.6",
    "toolsets": ["hermes-cli"],
    "agent": {
        "max_turns": 90,
    },
    
    "terminal": {
        "backend": "local",
        "cwd": ".",  # Use current directory
        "timeout": 180,
        "docker_image": "nikolaik/python-nodejs:python3.11-nodejs20",
        "singularity_image": "docker://nikolaik/python-nodejs:python3.11-nodejs20",
        "modal_image": "nikolaik/python-nodejs:python3.11-nodejs20",
        "daytona_image": "nikolaik/python-nodejs:python3.11-nodejs20",
        # Container resource limits (docker, singularity, modal, daytona — ignored for local/ssh)
        "container_cpu": 1,
        "container_memory": 5120,       # MB (default 5GB)
        "container_disk": 51200,        # MB (default 50GB)
        "container_persistent": True,   # Persist filesystem across sessions
        # Docker volume mounts — share host directories with the container.
        # Each entry is "host_path:container_path" (standard Docker -v syntax).
        # Example: ["/home/user/projects:/workspace/projects", "/data:/data"]
        "docker_volumes": [],
        # Explicit opt-in: mount the host cwd into /workspace for Docker sessions.
        # Default off because passing host directories into a sandbox weakens isolation.
        "docker_mount_cwd_to_workspace": False,
        # Persistent shell — keep a long-lived bash shell across execute() calls
        # so cwd/env vars/shell variables survive between commands.
        # Enabled by default for non-local backends (SSH); local is always opt-in
        # via TERMINAL_LOCAL_PERSISTENT env var.
        "persistent_shell": True,
    },
    
    "browser": {
        "inactivity_timeout": 120,
        "record_sessions": False,  # Auto-record browser sessions as WebM videos
    },

    # Filesystem checkpoints — automatic snapshots before destructive file ops.
    # When enabled, the agent takes a snapshot of the working directory once per
    # conversation turn (on first write_file/patch call).  Use /rollback to restore.
    "checkpoints": {
        "enabled": True,
        "max_snapshots": 50,  # Max checkpoints to keep per directory
    },
    
    "compression": {
        "enabled": True,
        "threshold": 0.50,
        "summary_model": "google/gemini-3-flash-preview",
        "summary_provider": "auto",
    },
    
    # Auxiliary model config — provider:model for each side task.
    # Format: provider is the provider name, model is the model slug.
    # "auto" for provider = auto-detect best available provider.
    # Empty model = use provider's default auxiliary model.
    # All tasks fall back to openrouter:google/gemini-3-flash-preview if
    # the configured provider is unavailable.
    "auxiliary": {
        "vision": {
            "provider": "auto",    # auto | openrouter | nous | codex | custom
            "model": "",           # e.g. "google/gemini-2.5-flash", "gpt-4o"
            "base_url": "",        # direct OpenAI-compatible endpoint (takes precedence over provider)
            "api_key": "",         # API key for base_url (falls back to OPENAI_API_KEY)
        },
        "web_extract": {
            "provider": "auto",
            "model": "",
            "base_url": "",
            "api_key": "",
        },
        "compression": {
            "provider": "auto",
            "model": "",
            "base_url": "",
            "api_key": "",
        },
        "session_search": {
            "provider": "auto",
            "model": "",
            "base_url": "",
            "api_key": "",
        },
        "skills_hub": {
            "provider": "auto",
            "model": "",
            "base_url": "",
            "api_key": "",
        },
        "approval": {
            "provider": "auto",
            "model": "",           # fast/cheap model recommended (e.g. gemini-flash, haiku)
            "base_url": "",
            "api_key": "",
        },
        "mcp": {
            "provider": "auto",
            "model": "",
            "base_url": "",
            "api_key": "",
        },
        "flush_memories": {
            "provider": "auto",
            "model": "",
            "base_url": "",
            "api_key": "",
        },
    },
    
    "display": {
        "compact": False,
        "personality": "kawaii",
        "resume_display": "full",
        "bell_on_complete": False,
        "show_reasoning": False,
        "skin": "default",
    },

    # Privacy settings
    "privacy": {
        "redact_pii": False,  # When True, hash user IDs and strip phone numbers from LLM context
    },
    
    # Text-to-speech configuration
    "tts": {
        "provider": "edge",  # "edge" (free) | "elevenlabs" (premium) | "openai"
        "edge": {
            "voice": "en-US-AriaNeural",
            # Popular: AriaNeural, JennyNeural, AndrewNeural, BrianNeural, SoniaNeural
        },
        "elevenlabs": {
            "voice_id": "pNInz6obpgDQGcFmaJgB",  # Adam
            "model_id": "eleven_multilingual_v2",
        },
        "openai": {
            "model": "gpt-4o-mini-tts",
            "voice": "alloy",
            # Voices: alloy, echo, fable, onyx, nova, shimmer
        },
    },
    
    "stt": {
        "enabled": True,
        "provider": "local",  # "local" (free, faster-whisper) | "groq" | "openai" (Whisper API)
        "local": {
            "model": "base",  # tiny, base, small, medium, large-v3
        },
        "openai": {
            "model": "whisper-1",  # whisper-1, gpt-4o-mini-transcribe, gpt-4o-transcribe
        },
    },

    "voice": {
        "record_key": "ctrl+b",
        "max_recording_seconds": 120,
        "auto_tts": False,
        "silence_threshold": 200,     # RMS below this = silence (0-32767)
        "silence_duration": 3.0,      # Seconds of silence before auto-stop
    },
    
    "human_delay": {
        "mode": "off",
        "min_ms": 800,
        "max_ms": 2500,
    },
    
    # Persistent memory -- bounded curated memory injected into system prompt
    "memory": {
        "memory_enabled": True,
        "user_profile_enabled": True,
        "memory_char_limit": 2200,   # ~800 tokens at 2.75 chars/token
        "user_char_limit": 1375,     # ~500 tokens at 2.75 chars/token
    },

    # Subagent delegation — override the provider:model used by delegate_task
    # so child agents can run on a different (cheaper/faster) provider and model.
    # Uses the same runtime provider resolution as CLI/gateway startup, so all
    # configured providers (OpenRouter, Nous, Z.ai, Kimi, etc.) are supported.
    "delegation": {
        "model": "",       # e.g. "google/gemini-3-flash-preview" (empty = inherit parent model)
        "provider": "",    # e.g. "openrouter" (empty = inherit parent provider + credentials)
        "base_url": "",    # direct OpenAI-compatible endpoint for subagents
        "api_key": "",     # API key for delegation.base_url (falls back to OPENAI_API_KEY)
    },

    # Ephemeral prefill messages file — JSON list of {role, content} dicts
    # injected at the start of every API call for few-shot priming.
    # Never saved to sessions, logs, or trajectories.
    "prefill_messages_file": "",
    
    # Honcho AI-native memory -- reads ~/.honcho/config.json as single source of truth.
    # This section is only needed for hermes-specific overrides; everything else
    # (apiKey, workspace, peerName, sessions, enabled) comes from the global config.
    "honcho": {},

    # IANA timezone (e.g. "Asia/Kolkata", "America/New_York").
    # Empty string means use server-local time.
    "timezone": "",

    # Discord platform settings (gateway mode)
    "discord": {
        "require_mention": True,       # Require @mention to respond in server channels
        "free_response_channels": "",  # Comma-separated channel IDs where bot responds without mention
        "auto_thread": True,           # Auto-create threads on @mention in channels (like Slack)
    },

    # Approval mode for dangerous commands:
    #   manual — always prompt the user (default)
    #   smart  — use auxiliary LLM to auto-approve low-risk commands, prompt for high-risk
    #   off    — skip all approval prompts (equivalent to --yolo)
    "approvals": {
        "mode": "manual",
    },

    # Permanently allowed dangerous command patterns (added via "always" approval)
    "command_allowlist": [],
    # User-defined quick commands that bypass the agent loop (type: exec only)
    "quick_commands": {},
    # Custom personalities — add your own entries here
    # Supports string format: {"name": "system prompt"}
    # Or dict format: {"name": {"description": "...", "system_prompt": "...", "tone": "...", "style": "..."}}
    "personalities": {},

    # Pre-exec security scanning via tirith
    "security": {
        "redact_secrets": True,
        "tirith_enabled": True,
        "tirith_path": "tirith",
        "tirith_timeout": 5,
        "tirith_fail_open": True,
    },

    # Config schema version - bump this when adding new required fields
    "_config_version": 8,
}

# =============================================================================
# Config Migration System
# =============================================================================

# Track which env vars were introduced in each config version.
# Migration only mentions vars new since the user's previous version.
ENV_VARS_BY_VERSION: Dict[int, List[str]] = {
    3: ["FIRECRAWL_API_KEY", "BROWSERBASE_API_KEY", "BROWSERBASE_PROJECT_ID", "FAL_KEY"],
    4: ["VOICE_TOOLS_OPENAI_KEY", "ELEVENLABS_API_KEY"],
    5: ["WHATSAPP_ENABLED", "WHATSAPP_MODE", "WHATSAPP_ALLOWED_USERS",
        "SLACK_BOT_TOKEN", "SLACK_APP_TOKEN", "SLACK_ALLOWED_USERS"],
}

# Required environment variables with metadata for migration prompts.
# LLM provider is required but handled in the setup wizard's provider
# selection step (Nous Portal / OpenRouter / Custom endpoint), so this
# dict is intentionally empty — no single env var is universally required.
REQUIRED_ENV_VARS = {}

# Optional environment variables that enhance functionality
OPTIONAL_ENV_VARS = {
    # ── Provider (handled in provider selection, not shown in checklists) ──
    "NOUS_BASE_URL": {
        "description": "Nous Portal base URL override",
        "prompt": "Nous Portal base URL (leave empty for default)",
        "url": None,
        "password": False,
        "category": "provider",
        "advanced": True,
    },
    "OPENROUTER_API_KEY": {
        "description": "OpenRouter API key (for vision, web scraping helpers, and MoA)",
        "prompt": "OpenRouter API key",
        "url": "https://openrouter.ai/keys",
        "password": True,
        "tools": ["vision_analyze", "mixture_of_agents"],
        "category": "provider",
        "advanced": True,
    },
    "GLM_API_KEY": {
        "description": "Z.AI / GLM API key (also recognized as ZAI_API_KEY / Z_AI_API_KEY)",
        "prompt": "Z.AI / GLM API key",
        "url": "https://z.ai/",
        "password": True,
        "category": "provider",
        "advanced": True,
    },
    "ZAI_API_KEY": {
        "description": "Z.AI API key (alias for GLM_API_KEY)",
        "prompt": "Z.AI API key",
        "url": "https://z.ai/",
        "password": True,
        "category": "provider",
        "advanced": True,
    },
    "Z_AI_API_KEY": {
        "description": "Z.AI API key (alias for GLM_API_KEY)",
        "prompt": "Z.AI API key",
        "url": "https://z.ai/",
        "password": True,
        "category": "provider",
        "advanced": True,
    },
    "GLM_BASE_URL": {
        "description": "Z.AI / GLM base URL override",
        "prompt": "Z.AI / GLM base URL (leave empty for default)",
        "url": None,
        "password": False,
        "category": "provider",
        "advanced": True,
    },
    "KIMI_API_KEY": {
        "description": "Kimi / Moonshot API key",
        "prompt": "Kimi API key",
        "url": "https://platform.moonshot.cn/",
        "password": True,
        "category": "provider",
        "advanced": True,
    },
    "KIMI_BASE_URL": {
        "description": "Kimi / Moonshot base URL override",
        "prompt": "Kimi base URL (leave empty for default)",
        "url": None,
        "password": False,
        "category": "provider",
        "advanced": True,
    },
    "MINIMAX_API_KEY": {
        "description": "MiniMax API key (international)",
        "prompt": "MiniMax API key",
        "url": "https://www.minimax.io/",
        "password": True,
        "category": "provider",
        "advanced": True,
    },
    "MINIMAX_BASE_URL": {
        "description": "MiniMax base URL override",
        "prompt": "MiniMax base URL (leave empty for default)",
        "url": None,
        "password": False,
        "category": "provider",
        "advanced": True,
    },
    "MINIMAX_CN_API_KEY": {
        "description": "MiniMax API key (China endpoint)",
        "prompt": "MiniMax (China) API key",
        "url": "https://www.minimaxi.com/",
        "password": True,
        "category": "provider",
        "advanced": True,
    },
    "MINIMAX_CN_BASE_URL": {
        "description": "MiniMax (China) base URL override",
        "prompt": "MiniMax (China) base URL (leave empty for default)",
        "url": None,
        "password": False,
        "category": "provider",
        "advanced": True,
    },
    "DEEPSEEK_API_KEY": {
        "description": "DeepSeek API key for direct DeepSeek access",
        "prompt": "DeepSeek API Key",
        "url": "https://platform.deepseek.com/api_keys",
        "password": True,
        "category": "provider",
    },
    "DEEPSEEK_BASE_URL": {
        "description": "Custom DeepSeek API base URL (advanced)",
        "prompt": "DeepSeek Base URL",
        "url": "",
        "password": False,
        "category": "provider",
    },

    # ── Tool API keys ──
    "FIRECRAWL_API_KEY": {
        "description": "Firecrawl API key for web search and scraping",
        "prompt": "Firecrawl API key",
        "url": "https://firecrawl.dev/",
        "tools": ["web_search", "web_extract"],
        "password": True,
        "category": "tool",
    },
    "FIRECRAWL_API_URL": {
        "description": "Firecrawl API URL for self-hosted instances (optional)",
        "prompt": "Firecrawl API URL (leave empty for cloud)",
        "url": None,
        "password": False,
        "category": "tool",
        "advanced": True,
    },
    "BROWSERBASE_API_KEY": {
        "description": "Browserbase API key for cloud browser (optional — local browser works without this)",
        "prompt": "Browserbase API key",
        "url": "https://browserbase.com/",
        "tools": ["browser_navigate", "browser_click"],
        "password": True,
        "category": "tool",
    },
    "BROWSERBASE_PROJECT_ID": {
        "description": "Browserbase project ID (optional — only needed for cloud browser)",
        "prompt": "Browserbase project ID",
        "url": "https://browserbase.com/",
        "tools": ["browser_navigate", "browser_click"],
        "password": False,
        "category": "tool",
    },
    "FAL_KEY": {
        "description": "FAL API key for image generation",
        "prompt": "FAL API key",
        "url": "https://fal.ai/",
        "tools": ["image_generate"],
        "password": True,
        "category": "tool",
    },
    "TINKER_API_KEY": {
        "description": "Tinker API key for RL training",
        "prompt": "Tinker API key",
        "url": "https://tinker-console.thinkingmachines.ai/keys",
        "tools": ["rl_start_training", "rl_check_status", "rl_stop_training"],
        "password": True,
        "category": "tool",
    },
    "WANDB_API_KEY": {
        "description": "Weights & Biases API key for experiment tracking",
        "prompt": "WandB API key",
        "url": "https://wandb.ai/authorize",
        "tools": ["rl_get_results", "rl_check_status"],
        "password": True,
        "category": "tool",
    },
    "VOICE_TOOLS_OPENAI_KEY": {
        "description": "OpenAI API key for voice transcription (Whisper) and OpenAI TTS",
        "prompt": "OpenAI API Key (for Whisper STT + TTS)",
        "url": "https://platform.openai.com/api-keys",
        "tools": ["voice_transcription", "openai_tts"],
        "password": True,
        "category": "tool",
    },
    "ELEVENLABS_API_KEY": {
        "description": "ElevenLabs API key for premium text-to-speech voices",
        "prompt": "ElevenLabs API key",
        "url": "https://elevenlabs.io/",
        "password": True,
        "category": "tool",
    },
    "GITHUB_TOKEN": {
        "description": "GitHub token for Skills Hub (higher API rate limits, skill publish)",
        "prompt": "GitHub Token",
        "url": "https://github.com/settings/tokens",
        "password": True,
        "category": "tool",
    },

    # ── Honcho ──
    "HONCHO_API_KEY": {
        "description": "Honcho API key for AI-native persistent memory",
        "prompt": "Honcho API key",
        "url": "https://app.honcho.dev",
        "tools": ["honcho_context"],
        "password": True,
        "category": "tool",
    },

    # ── Messaging platforms ──
    "TELEGRAM_BOT_TOKEN": {
        "description": "Telegram bot token from @BotFather",
        "prompt": "Telegram bot token",
        "url": "https://t.me/BotFather",
        "password": True,
        "category": "messaging",
    },
    "TELEGRAM_ALLOWED_USERS": {
        "description": "Comma-separated Telegram user IDs allowed to use the bot (get ID from @userinfobot)",
        "prompt": "Allowed Telegram user IDs (comma-separated)",
        "url": "https://t.me/userinfobot",
        "password": False,
        "category": "messaging",
    },
    "DISCORD_BOT_TOKEN": {
        "description": "Discord bot token from Developer Portal",
        "prompt": "Discord bot token",
        "url": "https://discord.com/developers/applications",
        "password": True,
        "category": "messaging",
    },
    "DISCORD_ALLOWED_USERS": {
        "description": "Comma-separated Discord user IDs allowed to use the bot",
        "prompt": "Allowed Discord user IDs (comma-separated)",
        "url": None,
        "password": False,
        "category": "messaging",
    },
    "SLACK_BOT_TOKEN": {
        "description": "Slack bot token (xoxb-). Get from OAuth & Permissions after installing your app. "
                       "Required scopes: chat:write, app_mentions:read, channels:history, groups:history, "
                       "im:history, im:read, im:write, users:read, files:write",
        "prompt": "Slack Bot Token (xoxb-...)",
        "url": "https://api.slack.com/apps",
        "password": True,
        "category": "messaging",
    },
    "SLACK_APP_TOKEN": {
        "description": "Slack app-level token (xapp-) for Socket Mode. Get from Basic Information → "
                       "App-Level Tokens. Also ensure Event Subscriptions include: message.im, "
                       "message.channels, message.groups, app_mention",
        "prompt": "Slack App Token (xapp-...)",
        "url": "https://api.slack.com/apps",
        "password": True,
        "category": "messaging",
    },
    "GATEWAY_ALLOW_ALL_USERS": {
        "description": "Allow all users to interact with messaging bots (true/false). Default: false.",
        "prompt": "Allow all users (true/false)",
        "url": None,
        "password": False,
        "category": "messaging",
        "advanced": True,
    },

    # ── Agent settings ──
    "MESSAGING_CWD": {
        "description": "Working directory for terminal commands via messaging",
        "prompt": "Messaging working directory (default: home)",
        "url": None,
        "password": False,
        "category": "setting",
    },
    "SUDO_PASSWORD": {
        "description": "Sudo password for terminal commands requiring root access",
        "prompt": "Sudo password",
        "url": None,
        "password": True,
        "category": "setting",
    },
    "HERMES_MAX_ITERATIONS": {
        "description": "Maximum tool-calling iterations per conversation (default: 90)",
        "prompt": "Max iterations",
        "url": None,
        "password": False,
        "category": "setting",
    },
    # HERMES_TOOL_PROGRESS and HERMES_TOOL_PROGRESS_MODE are deprecated —
    # now configured via display.tool_progress in config.yaml (off|new|all|verbose).
    # Gateway falls back to these env vars for backward compatibility.
    "HERMES_TOOL_PROGRESS": {
        "description": "(deprecated) Use display.tool_progress in config.yaml instead",
        "prompt": "Tool progress (deprecated — use config.yaml)",
        "url": None,
        "password": False,
        "category": "setting",
    },
    "HERMES_TOOL_PROGRESS_MODE": {
        "description": "(deprecated) Use display.tool_progress in config.yaml instead",
        "prompt": "Progress mode (deprecated — use config.yaml)",
        "url": None,
        "password": False,
        "category": "setting",
    },
    "HERMES_PREFILL_MESSAGES_FILE": {
        "description": "Path to JSON file with ephemeral prefill messages for few-shot priming",
        "prompt": "Prefill messages file path",
        "url": None,
        "password": False,
        "category": "setting",
    },
    "HERMES_EPHEMERAL_SYSTEM_PROMPT": {
        "description": "Ephemeral system prompt injected at API-call time (never persisted to sessions)",
        "prompt": "Ephemeral system prompt",
        "url": None,
        "password": False,
        "category": "setting",
    },
}


def get_missing_env_vars(required_only: bool = False) -> List[Dict[str, Any]]:
    """
    Check which environment variables are missing.
    
    Returns list of dicts with var info for missing variables.
    """
    missing = []
    
    # Check required vars
    for var_name, info in REQUIRED_ENV_VARS.items():
        if not get_env_value(var_name):
            missing.append({"name": var_name, **info, "is_required": True})
    
    # Check optional vars (if not required_only)
    if not required_only:
        for var_name, info in OPTIONAL_ENV_VARS.items():
            if not get_env_value(var_name):
                missing.append({"name": var_name, **info, "is_required": False})
    
    return missing


def _set_nested(config: dict, dotted_key: str, value):
    """Set a value at an arbitrarily nested dotted key path.

    Creates intermediate dicts as needed, e.g. ``_set_nested(c, "a.b.c", 1)``
    ensures ``c["a"]["b"]["c"] == 1``.
    """
    parts = dotted_key.split(".")
    current = config
    for part in parts[:-1]:
        if part not in current or not isinstance(current.get(part), dict):
            current[part] = {}
        current = current[part]
    current[parts[-1]] = value


def get_missing_config_fields() -> List[Dict[str, Any]]:
    """
    Check which config fields are missing or outdated (recursive).
    
    Walks the DEFAULT_CONFIG tree at arbitrary depth and reports any keys
    present in defaults but absent from the user's loaded config.
    """
    config = load_config()
    missing = []

    def _check(defaults: dict, current: dict, prefix: str = ""):
        for key, default_value in defaults.items():
            if key.startswith('_'):
                continue
            full_key = key if not prefix else f"{prefix}.{key}"
            if key not in current:
                missing.append({
                    "key": full_key,
                    "default": default_value,
                    "description": f"New config option: {full_key}",
                })
            elif isinstance(default_value, dict) and isinstance(current.get(key), dict):
                _check(default_value, current[key], full_key)

    _check(DEFAULT_CONFIG, config)
    return missing


def check_config_version() -> Tuple[int, int]:
    """
    Check config version.
    
    Returns (current_version, latest_version).
    """
    config = load_config()
    current = config.get("_config_version", 0)
    latest = DEFAULT_CONFIG.get("_config_version", 1)
    return current, latest


def migrate_config(interactive: bool = True, quiet: bool = False) -> Dict[str, Any]:
    """
    Migrate config to latest version, prompting for new required fields.
    
    Args:
        interactive: If True, prompt user for missing values
        quiet: If True, suppress output
        
    Returns:
        Dict with migration results: {"env_added": [...], "config_added": [...], "warnings": [...]}
    """
    results = {"env_added": [], "config_added": [], "warnings": []}
    
    # Check config version
    current_ver, latest_ver = check_config_version()
    
    # ── Version 3 → 4: migrate tool progress from .env to config.yaml ──
    if current_ver < 4:
        config = load_config()
        display = config.get("display", {})
        if not isinstance(display, dict):
            display = {}
        if "tool_progress" not in display:
            old_enabled = get_env_value("HERMES_TOOL_PROGRESS")
            old_mode = get_env_value("HERMES_TOOL_PROGRESS_MODE")
            if old_enabled and old_enabled.lower() in ("false", "0", "no"):
                display["tool_progress"] = "off"
                results["config_added"].append("display.tool_progress=off (from HERMES_TOOL_PROGRESS=false)")
            elif old_mode and old_mode.lower() in ("new", "all"):
                display["tool_progress"] = old_mode.lower()
                results["config_added"].append(f"display.tool_progress={old_mode.lower()} (from HERMES_TOOL_PROGRESS_MODE)")
            else:
                display["tool_progress"] = "all"
                results["config_added"].append("display.tool_progress=all (default)")
            config["display"] = display
            save_config(config)
            if not quiet:
                print(f"  ✓ Migrated tool progress to config.yaml: {display['tool_progress']}")
    
    # ── Version 4 → 5: add timezone field ──
    if current_ver < 5:
        config = load_config()
        if "timezone" not in config:
            old_tz = os.getenv("HERMES_TIMEZONE", "")
            if old_tz and old_tz.strip():
                config["timezone"] = old_tz.strip()
                results["config_added"].append(f"timezone={old_tz.strip()} (from HERMES_TIMEZONE)")
            else:
                config["timezone"] = ""
                results["config_added"].append("timezone= (empty, uses server-local)")
            save_config(config)
            if not quiet:
                tz_display = config["timezone"] or "(server-local)"
                print(f"  ✓ Added timezone to config.yaml: {tz_display}")

    if current_ver < latest_ver and not quiet:
        print(f"Config version: {current_ver} → {latest_ver}")
    
    # Check for missing required env vars
    missing_env = get_missing_env_vars(required_only=True)
    
    if missing_env and not quiet:
        print("\n⚠️  Missing required environment variables:")
        for var in missing_env:
            print(f"   • {var['name']}: {var['description']}")
    
    if interactive and missing_env:
        print("\nLet's configure them now:\n")
        for var in missing_env:
            if var.get("url"):
                print(f"  Get your key at: {var['url']}")
            
            if var.get("password"):
                import getpass
                value = getpass.getpass(f"  {var['prompt']}: ")
            else:
                value = input(f"  {var['prompt']}: ").strip()
            
            if value:
                save_env_value(var["name"], value)
                results["env_added"].append(var["name"])
                print(f"  ✓ Saved {var['name']}")
            else:
                results["warnings"].append(f"Skipped {var['name']} - some features may not work")
            print()
    
    # Check for missing optional env vars and offer to configure interactively
    # Skip "advanced" vars (like OPENAI_BASE_URL) -- those are for power users
    missing_optional = get_missing_env_vars(required_only=False)
    required_names = {v["name"] for v in missing_env} if missing_env else set()
    missing_optional = [
        v for v in missing_optional
        if v["name"] not in required_names and not v.get("advanced")
    ]
    
    # Only offer to configure env vars that are NEW since the user's previous version
    new_var_names = set()
    for ver in range(current_ver + 1, latest_ver + 1):
        new_var_names.update(ENV_VARS_BY_VERSION.get(ver, []))

    if new_var_names and interactive and not quiet:
        new_and_unset = [
            (name, OPTIONAL_ENV_VARS[name])
            for name in sorted(new_var_names)
            if not get_env_value(name) and name in OPTIONAL_ENV_VARS
        ]
        if new_and_unset:
            print(f"\n  {len(new_and_unset)} new optional key(s) in this update:")
            for name, info in new_and_unset:
                print(f"    • {name} — {info.get('description', '')}")
            print()
            try:
                answer = input("  Configure new keys? [y/N]: ").strip().lower()
            except (EOFError, KeyboardInterrupt):
                answer = "n"

            if answer in ("y", "yes"):
                print()
                for name, info in new_and_unset:
                    if info.get("url"):
                        print(f"  {info.get('description', name)}")
                        print(f"  Get your key at: {info['url']}")
                    else:
                        print(f"  {info.get('description', name)}")
                    if info.get("password"):
                        import getpass
                        value = getpass.getpass(f"  {info.get('prompt', name)} (Enter to skip): ")
                    else:
                        value = input(f"  {info.get('prompt', name)} (Enter to skip): ").strip()
                    if value:
                        save_env_value(name, value)
                        results["env_added"].append(name)
                        print(f"  ✓ Saved {name}")
                    print()
            else:
                print("  Set later with: hermes config set <key> <value>")
    
    # Check for missing config fields
    missing_config = get_missing_config_fields()
    
    if missing_config:
        config = load_config()
        
        for field in missing_config:
            key = field["key"]
            default = field["default"]
            
            _set_nested(config, key, default)
            results["config_added"].append(key)
            if not quiet:
                print(f"  ✓ Added {key} = {default}")
        
        # Update version and save
        config["_config_version"] = latest_ver
        save_config(config)
    elif current_ver < latest_ver:
        # Just update version
        config = load_config()
        config["_config_version"] = latest_ver
        save_config(config)
    
    return results


def _deep_merge(base: dict, override: dict) -> dict:
    """Recursively merge *override* into *base*, preserving nested defaults.

    Keys in *override* take precedence. If both values are dicts the merge
    recurses, so a user who overrides only ``tts.elevenlabs.voice_id`` will
    keep the default ``tts.elevenlabs.model_id`` intact.
    """
    result = base.copy()
    for key, value in override.items():
        if (
            key in result
            and isinstance(result[key], dict)
            and isinstance(value, dict)
        ):
            result[key] = _deep_merge(result[key], value)
        else:
            result[key] = value
    return result


def _normalize_max_turns_config(config: Dict[str, Any]) -> Dict[str, Any]:
    """Normalize legacy root-level max_turns into agent.max_turns."""
    config = dict(config)
    agent_config = dict(config.get("agent") or {})

    if "max_turns" in config and "max_turns" not in agent_config:
        agent_config["max_turns"] = config["max_turns"]

    if "max_turns" not in agent_config:
        agent_config["max_turns"] = DEFAULT_CONFIG["agent"]["max_turns"]

    config["agent"] = agent_config
    config.pop("max_turns", None)
    return config



def load_config() -> Dict[str, Any]:
    """Load configuration from ~/.hermes/config.yaml."""
    import copy
    ensure_hermes_home()
    config_path = get_config_path()
    
    config = copy.deepcopy(DEFAULT_CONFIG)
    
    if config_path.exists():
        try:
            with open(config_path, encoding="utf-8") as f:
                user_config = yaml.safe_load(f) or {}

            if "max_turns" in user_config:
                agent_user_config = dict(user_config.get("agent") or {})
                if agent_user_config.get("max_turns") is None:
                    agent_user_config["max_turns"] = user_config["max_turns"]
                user_config["agent"] = agent_user_config
                user_config.pop("max_turns", None)

            config = _deep_merge(config, user_config)
        except Exception as e:
            print(f"Warning: Failed to load config: {e}")
    
    return _normalize_max_turns_config(config)


_SECURITY_COMMENT = """
# ── Security ──────────────────────────────────────────────────────────
# API keys, tokens, and passwords are redacted from tool output by default.
# Set to false to see full values (useful for debugging auth issues).
# tirith pre-exec scanning is enabled by default when the tirith binary
# is available. Configure via security.tirith_* keys or env vars
# (TIRITH_ENABLED, TIRITH_BIN, TIRITH_TIMEOUT, TIRITH_FAIL_OPEN).
#
# security:
#   redact_secrets: false
#   tirith_enabled: true
#   tirith_path: "tirith"
#   tirith_timeout: 5
#   tirith_fail_open: true
"""

_FALLBACK_COMMENT = """
# ── Fallback Model ────────────────────────────────────────────────────
# Automatic provider failover when primary is unavailable.
# Uncomment and configure to enable. Triggers on rate limits (429),
# overload (529), service errors (503), or connection failures.
#
# Supported providers:
#   openrouter   (OPENROUTER_API_KEY)  — routes to any model
#   openai-codex (OAuth — hermes login) — OpenAI Codex
#   nous         (OAuth — hermes login) — Nous Portal
#   zai          (ZAI_API_KEY)         — Z.AI / GLM
#   kimi-coding  (KIMI_API_KEY)        — Kimi / Moonshot
#   minimax      (MINIMAX_API_KEY)     — MiniMax
#   minimax-cn   (MINIMAX_CN_API_KEY)  — MiniMax (China)
#
# For custom OpenAI-compatible endpoints, add base_url and api_key_env.
#
# fallback_model:
#   provider: openrouter
#   model: anthropic/claude-sonnet-4
"""


_COMMENTED_SECTIONS = """
# ── Security ──────────────────────────────────────────────────────────
# API keys, tokens, and passwords are redacted from tool output by default.
# Set to false to see full values (useful for debugging auth issues).
#
# security:
#   redact_secrets: false

# ── Fallback Model ────────────────────────────────────────────────────
# Automatic provider failover when primary is unavailable.
# Uncomment and configure to enable. Triggers on rate limits (429),
# overload (529), service errors (503), or connection failures.
#
# Supported providers:
#   openrouter   (OPENROUTER_API_KEY)  — routes to any model
#   openai-codex (OAuth — hermes login) — OpenAI Codex
#   nous         (OAuth — hermes login) — Nous Portal
#   zai          (ZAI_API_KEY)         — Z.AI / GLM
#   kimi-coding  (KIMI_API_KEY)        — Kimi / Moonshot
#   minimax      (MINIMAX_API_KEY)     — MiniMax
#   minimax-cn   (MINIMAX_CN_API_KEY)  — MiniMax (China)
#
# For custom OpenAI-compatible endpoints, add base_url and api_key_env.
#
# fallback_model:
#   provider: openrouter
#   model: anthropic/claude-sonnet-4
"""


def save_config(config: Dict[str, Any]):
    """Save configuration to ~/.hermes/config.yaml."""
    from utils import atomic_yaml_write

    ensure_hermes_home()
    config_path = get_config_path()
    normalized = _normalize_max_turns_config(config)

    # Build optional commented-out sections for features that are off by
    # default or only relevant when explicitly configured.
    parts = []
    sec = normalized.get("security", {})
    if not sec or sec.get("redact_secrets") is None:
        parts.append(_SECURITY_COMMENT)
    fb = normalized.get("fallback_model", {})
    if not fb or not (fb.get("provider") and fb.get("model")):
        parts.append(_FALLBACK_COMMENT)

    atomic_yaml_write(
        config_path,
        normalized,
        extra_content="".join(parts) if parts else None,
    )
    _secure_file(config_path)


def load_env() -> Dict[str, str]:
    """Load environment variables from ~/.hermes/.env."""
    env_path = get_env_path()
    env_vars = {}
    
    if env_path.exists():
        # On Windows, open() defaults to the system locale (cp1252) which can
        # fail on UTF-8 .env files. Use explicit UTF-8 only on Windows.
        open_kw = {"encoding": "utf-8", "errors": "replace"} if _IS_WINDOWS else {}
        with open(env_path, **open_kw) as f:
            for line in f:
                line = line.strip()
                if line and not line.startswith('#') and '=' in line:
                    key, _, value = line.partition('=')
                    env_vars[key.strip()] = value.strip().strip('"\'')
    
    return env_vars


def save_env_value(key: str, value: str):
    """Save or update a value in ~/.hermes/.env."""
    if not _ENV_VAR_NAME_RE.match(key):
        raise ValueError(f"Invalid environment variable name: {key!r}")
    value = value.replace("\n", "").replace("\r", "")
    ensure_hermes_home()
    env_path = get_env_path()
    
    # On Windows, open() defaults to the system locale (cp1252) which can
    # cause OSError errno 22 on UTF-8 .env files.
    read_kw = {"encoding": "utf-8", "errors": "replace"} if _IS_WINDOWS else {}
    write_kw = {"encoding": "utf-8"} if _IS_WINDOWS else {}

    lines = []
    if env_path.exists():
        with open(env_path, **read_kw) as f:
            lines = f.readlines()
    
    # Find and update or append
    found = False
    for i, line in enumerate(lines):
        if line.strip().startswith(f"{key}="):
            lines[i] = f"{key}={value}\n"
            found = True
            break
    
    if not found:
        # Ensure there's a newline at the end of the file before appending
        if lines and not lines[-1].endswith("\n"):
            lines[-1] += "\n"
        lines.append(f"{key}={value}\n")
    
    fd, tmp_path = tempfile.mkstemp(dir=str(env_path.parent), suffix='.tmp', prefix='.env_')
    try:
        with os.fdopen(fd, 'w', **write_kw) as f:
            f.writelines(lines)
            f.flush()
            os.fsync(f.fileno())
        os.replace(tmp_path, env_path)
    except BaseException:
        try:
            os.unlink(tmp_path)
        except OSError:
            pass
        raise
    _secure_file(env_path)

    os.environ[key] = value

    # Restrict .env permissions to owner-only (contains API keys)
    if not _IS_WINDOWS:
        try:
            os.chmod(env_path, stat.S_IRUSR | stat.S_IWUSR)
        except OSError:
            pass


def save_anthropic_oauth_token(value: str, save_fn=None):
    """Persist an Anthropic OAuth/setup token and clear the API-key slot."""
    writer = save_fn or save_env_value
    writer("ANTHROPIC_TOKEN", value)
    writer("ANTHROPIC_API_KEY", "")


def use_anthropic_claude_code_credentials(save_fn=None):
    """Use Claude Code's own credential files instead of persisting env tokens."""
    writer = save_fn or save_env_value
    writer("ANTHROPIC_TOKEN", "")
    writer("ANTHROPIC_API_KEY", "")


def save_anthropic_api_key(value: str, save_fn=None):
    """Persist an Anthropic API key and clear the OAuth/setup-token slot."""
    writer = save_fn or save_env_value
    writer("ANTHROPIC_API_KEY", value)
    writer("ANTHROPIC_TOKEN", "")


def save_env_value_secure(key: str, value: str) -> Dict[str, Any]:
    save_env_value(key, value)
    return {
        "success": True,
        "stored_as": key,
        "validated": False,
    }



def get_env_value(key: str) -> Optional[str]:
    """Get a value from ~/.hermes/.env or environment."""
    # Check environment first
    if key in os.environ:
        return os.environ[key]
    
    # Then check .env file
    env_vars = load_env()
    return env_vars.get(key)


# =============================================================================
# Config display
# =============================================================================

def redact_key(key: str) -> str:
    """Redact an API key for display."""
    if not key:
        return color("(not set)", Colors.DIM)
    if len(key) < 12:
        return "***"
    return key[:4] + "..." + key[-4:]


def show_config():
    """Display current configuration."""
    config = load_config()
    
    print()
    print(color("┌─────────────────────────────────────────────────────────┐", Colors.CYAN))
    print(color("│              ⚕ Hermes Configuration                    │", Colors.CYAN))
    print(color("└─────────────────────────────────────────────────────────┘", Colors.CYAN))
    
    # Paths
    print()
    print(color("◆ Paths", Colors.CYAN, Colors.BOLD))
    print(f"  Config:       {get_config_path()}")
    print(f"  Secrets:      {get_env_path()}")
    print(f"  Install:      {get_project_root()}")
    
    # API Keys
    print()
    print(color("◆ API Keys", Colors.CYAN, Colors.BOLD))
    
    keys = [
        ("OPENROUTER_API_KEY", "OpenRouter"),
        ("VOICE_TOOLS_OPENAI_KEY", "OpenAI (STT/TTS)"),
        ("FIRECRAWL_API_KEY", "Firecrawl"),
        ("BROWSERBASE_API_KEY", "Browserbase"),
        ("FAL_KEY", "FAL"),
    ]
    
    for env_key, name in keys:
        value = get_env_value(env_key)
        print(f"  {name:<14} {redact_key(value)}")
    anthropic_value = get_env_value("ANTHROPIC_TOKEN") or get_env_value("ANTHROPIC_API_KEY")
    print(f"  {'Anthropic':<14} {redact_key(anthropic_value)}")
    
    # Model settings
    print()
    print(color("◆ Model", Colors.CYAN, Colors.BOLD))
    print(f"  Model:        {config.get('model', 'not set')}")
    print(f"  Max turns:    {config.get('agent', {}).get('max_turns', DEFAULT_CONFIG['agent']['max_turns'])}")
    print(f"  Toolsets:     {', '.join(config.get('toolsets', ['all']))}")
    
    # Display
    print()
    print(color("◆ Display", Colors.CYAN, Colors.BOLD))
    display = config.get('display', {})
    print(f"  Personality:  {display.get('personality', 'kawaii')}")
    print(f"  Reasoning:    {'on' if display.get('show_reasoning', False) else 'off'}")
    print(f"  Bell:         {'on' if display.get('bell_on_complete', False) else 'off'}")

    # Terminal
    print()
    print(color("◆ Terminal", Colors.CYAN, Colors.BOLD))
    terminal = config.get('terminal', {})
    print(f"  Backend:      {terminal.get('backend', 'local')}")
    print(f"  Working dir:  {terminal.get('cwd', '.')}")
    print(f"  Timeout:      {terminal.get('timeout', 60)}s")
    
    if terminal.get('backend') == 'docker':
        print(f"  Docker image: {terminal.get('docker_image', 'python:3.11-slim')}")
    elif terminal.get('backend') == 'singularity':
        print(f"  Image:        {terminal.get('singularity_image', 'docker://python:3.11')}")
    elif terminal.get('backend') == 'modal':
        print(f"  Modal image:  {terminal.get('modal_image', 'python:3.11')}")
        modal_token = get_env_value('MODAL_TOKEN_ID')
        print(f"  Modal token:  {'configured' if modal_token else '(not set)'}")
    elif terminal.get('backend') == 'daytona':
        print(f"  Daytona image: {terminal.get('daytona_image', 'nikolaik/python-nodejs:python3.11-nodejs20')}")
        daytona_key = get_env_value('DAYTONA_API_KEY')
        print(f"  API key:      {'configured' if daytona_key else '(not set)'}")
    elif terminal.get('backend') == 'ssh':
        ssh_host = get_env_value('TERMINAL_SSH_HOST')
        ssh_user = get_env_value('TERMINAL_SSH_USER')
        print(f"  SSH host:     {ssh_host or '(not set)'}")
        print(f"  SSH user:     {ssh_user or '(not set)'}")
    
    # Timezone
    print()
    print(color("◆ Timezone", Colors.CYAN, Colors.BOLD))
    tz = config.get('timezone', '')
    if tz:
        print(f"  Timezone:     {tz}")
    else:
        print(f"  Timezone:     {color('(server-local)', Colors.DIM)}")

    # Compression
    print()
    print(color("◆ Context Compression", Colors.CYAN, Colors.BOLD))
    compression = config.get('compression', {})
    enabled = compression.get('enabled', True)
    print(f"  Enabled:      {'yes' if enabled else 'no'}")
    if enabled:
        print(f"  Threshold:    {compression.get('threshold', 0.50) * 100:.0f}%")
        print(f"  Model:        {compression.get('summary_model', 'google/gemini-3-flash-preview')}")
        comp_provider = compression.get('summary_provider', 'auto')
        if comp_provider != 'auto':
            print(f"  Provider:     {comp_provider}")
    
    # Auxiliary models
    auxiliary = config.get('auxiliary', {})
    aux_tasks = {
        "Vision":      auxiliary.get('vision', {}),
        "Web extract": auxiliary.get('web_extract', {}),
    }
    has_overrides = any(
        t.get('provider', 'auto') != 'auto' or t.get('model', '')
        for t in aux_tasks.values()
    )
    if has_overrides:
        print()
        print(color("◆ Auxiliary Models (overrides)", Colors.CYAN, Colors.BOLD))
        for label, task_cfg in aux_tasks.items():
            prov = task_cfg.get('provider', 'auto')
            mdl = task_cfg.get('model', '')
            if prov != 'auto' or mdl:
                parts = [f"provider={prov}"]
                if mdl:
                    parts.append(f"model={mdl}")
                print(f"  {label:12s}  {', '.join(parts)}")
    
    # Messaging
    print()
    print(color("◆ Messaging Platforms", Colors.CYAN, Colors.BOLD))
    
    telegram_token = get_env_value('TELEGRAM_BOT_TOKEN')
    discord_token = get_env_value('DISCORD_BOT_TOKEN')
    
    print(f"  Telegram:     {'configured' if telegram_token else color('not configured', Colors.DIM)}")
    print(f"  Discord:      {'configured' if discord_token else color('not configured', Colors.DIM)}")
    
    print()
    print(color("─" * 60, Colors.DIM))
    print(color("  hermes config edit     # Edit config file", Colors.DIM))
    print(color("  hermes config set <key> <value>", Colors.DIM))
    print(color("  hermes setup           # Run setup wizard", Colors.DIM))
    print()


def edit_config():
    """Open config file in user's editor."""
    config_path = get_config_path()
    
    # Ensure config exists
    if not config_path.exists():
        save_config(DEFAULT_CONFIG)
        print(f"Created {config_path}")
    
    # Find editor
    editor = os.getenv('EDITOR') or os.getenv('VISUAL')
    
    if not editor:
        # Try common editors
        for cmd in ['nano', 'vim', 'vi', 'code', 'notepad']:
            import shutil
            if shutil.which(cmd):
                editor = cmd
                break
    
    if not editor:
        print("No editor found. Config file is at:")
        print(f"  {config_path}")
        return
    
    print(f"Opening {config_path} in {editor}...")
    subprocess.run([editor, str(config_path)])


def set_config_value(key: str, value: str):
    """Set a configuration value."""
    # Check if it's an API key (goes to .env)
    api_keys = [
        'OPENROUTER_API_KEY', 'OPENAI_API_KEY', 'ANTHROPIC_API_KEY', 'VOICE_TOOLS_OPENAI_KEY',
        'FIRECRAWL_API_KEY', 'FIRECRAWL_API_URL', 'BROWSERBASE_API_KEY', 'BROWSERBASE_PROJECT_ID',
        'FAL_KEY', 'TELEGRAM_BOT_TOKEN', 'DISCORD_BOT_TOKEN',
        'TERMINAL_SSH_HOST', 'TERMINAL_SSH_USER', 'TERMINAL_SSH_KEY',
        'SUDO_PASSWORD', 'SLACK_BOT_TOKEN', 'SLACK_APP_TOKEN',
        'GITHUB_TOKEN', 'HONCHO_API_KEY', 'WANDB_API_KEY',
        'TINKER_API_KEY',
    ]
    
    if key.upper() in api_keys or key.upper().endswith('_API_KEY') or key.upper().endswith('_TOKEN') or key.upper().startswith('TERMINAL_SSH'):
        save_env_value(key.upper(), value)
        print(f"✓ Set {key} in {get_env_path()}")
        return
    
    # Otherwise it goes to config.yaml
    # Read the raw user config (not merged with defaults) to avoid
    # dumping all default values back to the file
    config_path = get_config_path()
    user_config = {}
    if config_path.exists():
        try:
            with open(config_path, encoding="utf-8") as f:
                user_config = yaml.safe_load(f) or {}
        except Exception:
            user_config = {}
    
    # Handle nested keys (e.g., "tts.provider")
    parts = key.split('.')
    current = user_config
    
    for part in parts[:-1]:
        if part not in current or not isinstance(current.get(part), dict):
            current[part] = {}
        current = current[part]
    
    # Convert value to appropriate type
    if value.lower() in ('true', 'yes', 'on'):
        value = True
    elif value.lower() in ('false', 'no', 'off'):
        value = False
    elif value.isdigit():
        value = int(value)
    elif value.replace('.', '', 1).isdigit():
        value = float(value)
    
    current[parts[-1]] = value
    
    # Write only user config back (not the full merged defaults)
    ensure_hermes_home()
    with open(config_path, 'w', encoding="utf-8") as f:
        yaml.dump(user_config, f, default_flow_style=False, sort_keys=False)
    
    # Keep .env in sync for keys that terminal_tool reads directly from env vars.
    # config.yaml is authoritative, but terminal_tool only reads TERMINAL_ENV etc.
    _config_to_env_sync = {
        "terminal.backend": "TERMINAL_ENV",
        "terminal.docker_image": "TERMINAL_DOCKER_IMAGE",
        "terminal.singularity_image": "TERMINAL_SINGULARITY_IMAGE",
        "terminal.modal_image": "TERMINAL_MODAL_IMAGE",
        "terminal.daytona_image": "TERMINAL_DAYTONA_IMAGE",
        "terminal.docker_mount_cwd_to_workspace": "TERMINAL_DOCKER_MOUNT_CWD_TO_WORKSPACE",
        "terminal.cwd": "TERMINAL_CWD",
        "terminal.timeout": "TERMINAL_TIMEOUT",
        "terminal.sandbox_dir": "TERMINAL_SANDBOX_DIR",
        "terminal.persistent_shell": "TERMINAL_PERSISTENT_SHELL",
    }
    if key in _config_to_env_sync:
        save_env_value(_config_to_env_sync[key], str(value))

    print(f"✓ Set {key} = {value} in {config_path}")


# =============================================================================
# Command handler
# =============================================================================

def config_command(args):
    """Handle config subcommands."""
    subcmd = getattr(args, 'config_command', None)
    
    if subcmd is None or subcmd == "show":
        show_config()
    
    elif subcmd == "edit":
        edit_config()
    
    elif subcmd == "set":
        key = getattr(args, 'key', None)
        value = getattr(args, 'value', None)
        if not key or not value:
            print("Usage: hermes config set <key> <value>")
            print()
            print("Examples:")
            print("  hermes config set model anthropic/claude-sonnet-4")
            print("  hermes config set terminal.backend docker")
            print("  hermes config set OPENROUTER_API_KEY sk-or-...")
            sys.exit(1)
        set_config_value(key, value)
    
    elif subcmd == "path":
        print(get_config_path())
    
    elif subcmd == "env-path":
        print(get_env_path())
    
    elif subcmd == "migrate":
        print()
        print(color("🔄 Checking configuration for updates...", Colors.CYAN, Colors.BOLD))
        print()
        
        # Check what's missing
        missing_env = get_missing_env_vars(required_only=False)
        missing_config = get_missing_config_fields()
        current_ver, latest_ver = check_config_version()
        
        if not missing_env and not missing_config and current_ver >= latest_ver:
            print(color("✓ Configuration is up to date!", Colors.GREEN))
            print()
            return
        
        # Show what needs to be updated
        if current_ver < latest_ver:
            print(f"  Config version: {current_ver} → {latest_ver}")
        
        if missing_config:
            print(f"\n  {len(missing_config)} new config option(s) will be added with defaults")
        
        required_missing = [v for v in missing_env if v.get("is_required")]
        optional_missing = [
            v for v in missing_env
            if not v.get("is_required") and not v.get("advanced")
        ]
        
        if required_missing:
            print(f"\n  ⚠️  {len(required_missing)} required API key(s) missing:")
            for var in required_missing:
                print(f"     • {var['name']}")
        
        if optional_missing:
            print(f"\n  ℹ️  {len(optional_missing)} optional API key(s) not configured:")
            for var in optional_missing:
                tools = var.get("tools", [])
                tools_str = f" (enables: {', '.join(tools[:2])})" if tools else ""
                print(f"     • {var['name']}{tools_str}")
        
        print()
        
        # Run migration
        results = migrate_config(interactive=True, quiet=False)
        
        print()
        if results["env_added"] or results["config_added"]:
            print(color("✓ Configuration updated!", Colors.GREEN))
        
        if results["warnings"]:
            print()
            for warning in results["warnings"]:
                print(color(f"  ⚠️  {warning}", Colors.YELLOW))
        
        print()
    
    elif subcmd == "check":
        # Non-interactive check for what's missing
        print()
        print(color("📋 Configuration Status", Colors.CYAN, Colors.BOLD))
        print()
        
        current_ver, latest_ver = check_config_version()
        if current_ver >= latest_ver:
            print(f"  Config version: {current_ver} ✓")
        else:
            print(color(f"  Config version: {current_ver} → {latest_ver} (update available)", Colors.YELLOW))
        
        print()
        print(color("  Required:", Colors.BOLD))
        for var_name in REQUIRED_ENV_VARS:
            if get_env_value(var_name):
                print(f"    ✓ {var_name}")
            else:
                print(color(f"    ✗ {var_name} (missing)", Colors.RED))
        
        print()
        print(color("  Optional:", Colors.BOLD))
        for var_name, info in OPTIONAL_ENV_VARS.items():
            if get_env_value(var_name):
                print(f"    ✓ {var_name}")
            else:
                tools = info.get("tools", [])
                tools_str = f" → {', '.join(tools[:2])}" if tools else ""
                print(color(f"    ○ {var_name}{tools_str}", Colors.DIM))
        
        missing_config = get_missing_config_fields()
        if missing_config:
            print()
            print(color(f"  {len(missing_config)} new config option(s) available", Colors.YELLOW))
            print("    Run 'hermes config migrate' to add them")
        
        print()
    
    else:
        print(f"Unknown config command: {subcmd}")
        print()
        print("Available commands:")
        print("  hermes config           Show current configuration")
        print("  hermes config edit      Open config in editor")
        print("  hermes config set <key> <value>   Set a config value")
        print("  hermes config check     Check for missing/outdated config")
        print("  hermes config migrate   Update config with new options")
        print("  hermes config path      Show config file path")
        print("  hermes config env-path  Show .env file path")
        sys.exit(1)