"""Tests for bugfixes in tasks.py from 2026-03-30 audit.

Covers:
  - NET_LINE_LIMIT raised from 10 → 500 to stop false-positive PR rejections
  - memory_compress reads actions from tick_record["decision"]["actions"]
  - good_morning_report reads yesterday's tick log, not today's
"""

import json
from datetime import datetime, timezone, timedelta
from pathlib import Path


# ── NET_LINE_LIMIT ───────────────────────────────────────────────────

def test_net_line_limit_is_sane():
    """NET_LINE_LIMIT = 10 caused every real PR to be spam-rejected.
    
    Any value below ~200 is dangerously restrictive for a production repo.
    500 is the current target: large enough for feature PRs, small enough
    to flag bulk commits.
    """
    # Import at top level would pull in huey/orchestration; just grep instead.
    tasks_path = Path(__file__).resolve().parent.parent / "tasks.py"
    text = tasks_path.read_text()
    
    # Find the NET_LINE_LIMIT assignment
    for line in text.splitlines():
        stripped = line.strip()
        if stripped.startswith("NET_LINE_LIMIT") and "=" in stripped:
            value = int(stripped.split("=")[1].strip())
            assert value >= 200, (
                f"NET_LINE_LIMIT = {value} is too low. "
                "Any value < 200 will reject most real PRs as over-limit."
            )
            assert value <= 2000, (
                f"NET_LINE_LIMIT = {value} is too high — it won't catch bulk commits."
            )
            break
    else:
        raise AssertionError("NET_LINE_LIMIT not found in tasks.py")


# ── memory_compress action path ──────────────────────────────────────

def test_memory_compress_reads_decision_actions():
    """Actions live in tick_record['decision']['actions'], not tick_record['actions'].
    
    The old code read t.get("actions", []) which always returned [] because
    the key is nested inside the decision dict.
    """
    tasks_path = Path(__file__).resolve().parent.parent / "tasks.py"
    text = tasks_path.read_text()
    
    # Find the memory_compress function body and verify the action path.
    # We look for the specific pattern that reads decision.get("actions")
    # within the ticks loop inside memory_compress.
    in_memory_compress = False
    found_correct_pattern = False
    for line in text.splitlines():
        if "def memory_compress" in line or "def _memory_compress" in line:
            in_memory_compress = True
        elif in_memory_compress and line.strip().startswith("def "):
            break
        elif in_memory_compress:
            # The correct pattern: decision = t.get("decision", {})
            if 'decision' in line and 't.get(' in line and '"decision"' in line:
                found_correct_pattern = True
            # The OLD bug: directly reading t.get("actions")
            if 't.get("actions"' in line and 'decision' not in line:
                raise AssertionError(
                    "Bug: memory_compress reads t.get('actions') directly. "
                    "Actions are nested under t['decision']['actions']."
                )
    
    assert found_correct_pattern, (
        "memory_compress does not read decision = t.get('decision', {})"
    )


# ── good_morning_report date bug ────────────────────────────────────

def test_good_morning_report_reads_yesterday_ticks():
    """good_morning_report runs at 6 AM. It should read YESTERDAY'S tick log,
    not today's (which is mostly empty at 6 AM).
    
    The old code used `now.strftime('%Y%m%d')` which gives today.
    The fix uses `(now - timedelta(days=1)).strftime('%Y%m%d')`.
    """
    tasks_path = Path(__file__).resolve().parent.parent / "tasks.py"
    text = tasks_path.read_text()
    
    # Find the good_morning_report function and check for the timedelta fix
    in_gmr = False
    uses_timedelta_for_yesterday = False
    old_bug_pattern = False
    for line in text.splitlines():
        if "def good_morning_report" in line:
            in_gmr = True
        elif in_gmr and line.strip().startswith("def "):
            break
        elif in_gmr:
            # Check for the corrected pattern: timedelta subtraction
            if "timedelta" in line and "days=1" in line:
                uses_timedelta_for_yesterday = True
            # Check for the old bug: yesterday = now.strftime(...)
            # This is the direct assignment without timedelta
            if 'yesterday = now.strftime' in line and 'timedelta' not in line:
                old_bug_pattern = True
    
    assert not old_bug_pattern, (
        "Bug: good_morning_report sets yesterday = now.strftime(...) "
        "which gives TODAY's date, not yesterday's."
    )
    assert uses_timedelta_for_yesterday, (
        "good_morning_report should use timedelta(days=1) to compute yesterday's date."
    )


# ── review_prs includes file list ────────────────────────────────────

def test_review_prs_rejection_includes_file_list():
    """When review_prs rejects a PR, the comment should include the file list
    so the author knows WHERE the bloat is, not just the net line count.
    """
    tasks_path = Path(__file__).resolve().parent.parent / "tasks.py"
    text = tasks_path.read_text()
    
    in_review_prs = False
    has_file_list = False
    for line in text.splitlines():
        if "def review_prs" in line:
            in_review_prs = True
        elif in_review_prs and line.strip().startswith("def "):
            break
        elif in_review_prs:
            if "file_list" in line and "filename" in line:
                has_file_list = True
    
    assert has_file_list, (
        "review_prs rejection comment should include a file_list "
        "so the author knows which files contribute to the net diff."
    )