import os
import re
from guessit import guessit
from tmdbv3api import TMDb, Movie, TV, Search
from database import AppConfig
from difflib import SequenceMatcher

class RenamerCore:
    def __init__(self):
        self.api_key = AppConfig.get_val('tmdb_api_key')
        self.lang = AppConfig.get_val('tmdb_language', 'pt-BR')
        self.min_confidence = int(AppConfig.get_val('min_confidence', '90')) / 100.0
        
        self.tmdb = TMDb()
        if self.api_key:
            self.tmdb.api_key = self.api_key
            self.tmdb.language = self.lang
        
        self.movie_api = Movie()
        self.tv_api = TV()
        self.search_api = Search()

    def identify_file(self, filepath):
        filename = os.path.basename(filepath)
        try:
            guess = guessit(filename)
        except Exception as e:
            return {'status': 'ERROR', 'msg': str(e)}

        title = guess.get('title')
        if not title: return {'status': 'NOT_FOUND', 'msg': 'Sem título'}

        if not self.api_key: return {'status': 'ERROR', 'msg': 'Sem API Key'}

        try:
            media_type = guess.get('type', 'movie')
            if media_type == 'episode':
                results = self.search_api.tv_shows(term=title)
            else:
                results = self.search_api.movies(term=title)
                if not results: results = self.search_api.tv_shows(term=title)
        except: return {'status': 'NOT_FOUND', 'msg': 'Erro TMDb'}

        if not results: return {'status': 'NOT_FOUND', 'msg': 'Nenhum resultado TMDb'}

        # --- CORREÇÃO DE SEGURANÇA (O erro 'str object' estava aqui) ---
        # Se o TMDb retornou um dicionário (paginado), pegamos a lista dentro dele.
        if isinstance(results, dict) and 'results' in results:
            results = results['results']
        # Se retornou um objeto que tem atributo 'results', usamos ele
        elif hasattr(results, 'results'):
            results = results.results
        
        # Se ainda assim for uma lista de strings (chaves), aborta
        if results and isinstance(results, list) and len(results) > 0 and isinstance(results[0], str):
             # Isso acontece se iterou sobre chaves de um dict sem querer
             return {'status': 'NOT_FOUND', 'msg': 'Formato de resposta inválido'}
        # -------------------------------------------------------------

        candidates = []
        for res in results:
            # Proteção extra: se o item for string, pula
            if isinstance(res, str): continue

            # Obtém atributos de forma segura (funciona para dict ou objeto)
            if isinstance(res, dict):
                r_id = res.get('id')
                r_title = res.get('title') or res.get('name')
                r_date = res.get('release_date') or res.get('first_air_date')
                r_overview = res.get('overview', '')
            else:
                r_id = getattr(res, 'id', None)
                r_title = getattr(res, 'title', getattr(res, 'name', ''))
                r_date = getattr(res, 'release_date', getattr(res, 'first_air_date', ''))
                r_overview = getattr(res, 'overview', '')

            if not r_title or not r_id: continue

            r_year = int(str(r_date)[:4]) if r_date else 0
            
            # Score e Comparação
            t1 = str(title).lower()
            t2 = str(r_title).lower()
            
            base_score = SequenceMatcher(None, t1, t2).ratio()
            
            if t1 in t2 or t2 in t1:
                base_score = max(base_score, 0.85)

            g_year = guess.get('year')
            if g_year and r_year:
                if g_year == r_year: base_score += 0.15
                elif abs(g_year - r_year) <= 1: base_score += 0.05
            
            final_score = min(base_score, 1.0)

            candidates.append({
                'tmdb_id': r_id,
                'title': r_title,
                'year': r_year,
                'type': 'movie' if hasattr(res, 'title') or (isinstance(res, dict) and 'title' in res) else 'tv',
                'overview': str(r_overview)[:100],
                'score': final_score
            })

        if not candidates: return {'status': 'NOT_FOUND', 'msg': 'Sem candidatos válidos'}

        candidates.sort(key=lambda x: x['score'], reverse=True)
        best = candidates[0]

        if len(candidates) == 1 and best['score'] > 0.6:
            return {'status': 'MATCH', 'match': best, 'guessed': guess}

        is_clear_winner = False
        if len(candidates) > 1:
            if (best['score'] - candidates[1]['score']) > 0.15:
                is_clear_winner = True
        
        if best['score'] >= self.min_confidence or is_clear_winner:
             return {'status': 'MATCH', 'match': best, 'guessed': guess}

        return {'status': 'AMBIGUOUS', 'candidates': candidates[:5], 'guessed': guess}

    def get_details(self, tmdb_id, media_type):
        if media_type == 'movie': return self.movie_api.details(tmdb_id)
        return self.tv_api.details(tmdb_id)

    def build_path(self, category_obj, media_info, guessed_info):
        clean_title = re.sub(r'[\\/*?:"<>|]', "", media_info['title']).strip()
        year = str(media_info['year'])
        
        forced_type = category_obj.content_type
        actual_type = media_info['type']
        
        is_series = False
        if forced_type == 'series': is_series = True
        elif forced_type == 'movie': is_series = False
        else: is_series = (actual_type == 'tv')

        if not is_series:
            return f"{clean_title} ({year}).mkv"
        else:
            season = guessed_info.get('season')
            episode = guessed_info.get('episode')
            
            if isinstance(season, list): season = season[0]
            if isinstance(episode, list): episode = episode[0]
            
            if not season: season = 1
            if not episode: episode = 1
            
            season_folder = f"Temporada {int(season):02d}"
            file_suffix = f"S{int(season):02d}E{int(episode):02d}"
            
            return os.path.join(clean_title, season_folder, f"{clean_title} {file_suffix}.mkv")