# backend/easter_eggs/engine.py
# PURPOSE: Match user input against the Easter Egg registry and fire the handler.
# This runs BEFORE the normal JARVIS/FRIDAY ReAct pipeline.
# If a match is found, the Easter Egg response is returned directly.
# If no match, fall through to the normal ReAct agent.

from .registry import EASTER_EGG_REGISTRY
import sys as _sys
if getattr(_sys, 'frozen', False):
    __import__('easter_eggs.iron_man_eggs')  # frozen exe: no 'backend.' prefix
else:
    __import__('backend.easter_eggs.iron_man_eggs')  # normal Python: full package path
del _sys  # clean up — don't pollute module namespace
from difflib import SequenceMatcher
from typing import Optional
import logging

logger = logging.getLogger("easter_eggs")

def fuzzy_match(input_text: str, trigger: str, threshold: float = 0.85) -> bool:
    """Returns True if input matches trigger with >= threshold similarity."""
    input_clean = input_text.lower().strip()
    trigger_clean = trigger.lower().strip()
    if trigger_clean in input_clean:
        return True
    ratio = SequenceMatcher(None, input_clean, trigger_clean).ratio()
    return ratio >= threshold

async def check_easter_eggs(
    user_input: str,
    ui_trigger: Optional[str],
    context: dict
) -> Optional[dict]:
    """
    Check user input and UI trigger against all registered Easter Eggs.
    Returns the Easter Egg response dict if matched, None otherwise.
    """
    for egg in EASTER_EGG_REGISTRY:
        # Check phrase triggers
        for phrase in egg.trigger_phrases:
            if fuzzy_match(user_input, phrase):
                logger.info(f"Easter Egg triggered: {egg.id} (phrase: {phrase})")
                result = await egg.handler(context)
                if result:
                    result["easter_egg_id"] = egg.id
                    if egg.discoverable:
                        await log_egg_triggered(egg.id, context)
                    return result

        # Check UI trigger
        if ui_trigger and egg.ui_trigger and ui_trigger == egg.ui_trigger:
            logger.info(f"Easter Egg triggered: {egg.id} (ui: {ui_trigger})")
            result = await egg.handler(context)
            if result:
                result["easter_egg_id"] = egg.id
                if egg.discoverable:
                    await log_egg_triggered(egg.id, context)
                return result

    return None  # no match — proceed to normal agent

async def log_egg_triggered(egg_id: str, context: dict):
    """Log triggered Easter Eggs to SQLite so Secret Lab can display them."""
    db_path = context.get("db_path")
    if not db_path:
        return
    import sqlite3, time
    conn = sqlite3.connect(db_path)
    conn.execute('PRAGMA journal_mode=WAL')
    conn.execute(
        "CREATE TABLE IF NOT EXISTS easter_eggs_triggered (egg_id TEXT PRIMARY KEY, first_triggered_at INTEGER, trigger_count INTEGER DEFAULT 0)"
    )
    conn.execute(
        "INSERT OR IGNORE INTO easter_eggs_triggered (egg_id, first_triggered_at) VALUES (?, ?)",
        (egg_id, int(time.time()))
    )
    conn.execute(
        "UPDATE easter_eggs_triggered SET trigger_count = trigger_count + 1 WHERE egg_id = ?",
        (egg_id,)
    )
    conn.commit()
    conn.close()