"""
Uni-Wizard Harness
Single entry point for all capabilities
"""

import json
import sys
from typing import Dict, Any, Optional
from pathlib import Path

# Add tools to path
sys.path.insert(0, str(Path(__file__).parent))

from tools import registry, call_tool


class UniWizardHarness:
    """
    The Uni-Wizard Harness - one consciousness, infinite capabilities.
    
    All API flows route through this single harness:
    - System monitoring and control
    - Git operations
    - Network requests
    - Gitea API
    - Local inference
    
    Usage:
        harness = UniWizardHarness()
        result = harness.execute("system_info")
        result = harness.execute("git_status", repo_path="/path/to/repo")
    """
    
    def __init__(self):
        self.registry = registry
        self.history = []
    
    def list_capabilities(self) -> str:
        """List all available tools/capabilities"""
        tools = []
        for category in self.registry.get_categories():
            cat_tools = self.registry.get_tools_by_category(category)
            tools.append(f"\n{category.upper()}:")
            for tool in cat_tools:
                tools.append(f"  - {tool['name']}: {tool['description']}")
        
        return "\n".join(tools)
    
    def execute(self, tool_name: str, **params) -> str:
        """
        Execute a tool by name.
        
        Args:
            tool_name: Name of the tool to execute
            **params: Parameters for the tool
            
        Returns:
            String result from the tool
        """
        # Log execution
        self.history.append({
            "tool": tool_name,
            "params": params
        })
        
        # Execute via registry
        result = call_tool(tool_name, **params)
        return result
    
    def execute_plan(self, plan: list) -> Dict[str, str]:
        """
        Execute a sequence of tool calls.
        
        Args:
            plan: List of dicts with 'tool' and 'params'
                  e.g., [{"tool": "system_info", "params": {}}]
                  
        Returns:
            Dict mapping tool names to results
        """
        results = {}
        for step in plan:
            tool_name = step.get("tool")
            params = step.get("params", {})
            
            result = self.execute(tool_name, **params)
            results[tool_name] = result
        
        return results
    
    def get_tool_definitions(self) -> str:
        """Get tool definitions formatted for LLM system prompt"""
        return self.registry.get_tool_definitions()
    
    def get_status(self) -> str:
        """Get harness status"""
        return json.dumps({
            "total_tools": len(self.registry.list_tools()),
            "categories": self.registry.get_categories(),
            "tools_by_category": {
                cat: self.registry.list_tools(cat) 
                for cat in self.registry.get_categories()
            },
            "execution_history_count": len(self.history)
        }, indent=2)


# Singleton instance
_harness = None

def get_harness() -> UniWizardHarness:
    """Get the singleton harness instance"""
    global _harness
    if _harness is None:
        _harness = UniWizardHarness()
    return _harness


def main():
    """CLI interface for the harness"""
    harness = get_harness()
    
    if len(sys.argv) < 2:
        print("Uni-Wizard Harness")
        print("==================")
        print("\nUsage: python harness.py <command> [args]")
        print("\nCommands:")
        print("  list          - List all capabilities")
        print("  status        - Show harness status")
        print("  tools         - Show tool definitions (for LLM)")
        print("  exec <tool>   - Execute a tool")
        print("\nExamples:")
        print('  python harness.py exec system_info')
        print('  python harness.py exec git_status repo_path=/tmp/timmy-home')
        return
    
    command = sys.argv[1]
    
    if command == "list":
        print(harness.list_capabilities())
    
    elif command == "status":
        print(harness.get_status())
    
    elif command == "tools":
        print(harness.get_tool_definitions())
    
    elif command == "exec" and len(sys.argv) >= 3:
        tool_name = sys.argv[2]
        
        # Parse params from args (key=value format)
        params = {}
        for arg in sys.argv[3:]:
            if '=' in arg:
                key, value = arg.split('=', 1)
                # Try to parse as int/bool
                if value.isdigit():
                    value = int(value)
                elif value.lower() == 'true':
                    value = True
                elif value.lower() == 'false':
                    value = False
                params[key] = value
        
        result = harness.execute(tool_name, **params)
        print(result)
    
    else:
        print(f"Unknown command: {command}")
        print("Run without arguments for help")


if __name__ == "__main__":
    main()