import logging
from typing import Optional

from telegram import Update, InlineKeyboardButton, InlineKeyboardMarkup
from telegram.ext import (
    Application,
    CommandHandler,
    MessageHandler,
    CallbackQueryHandler,
    ConversationHandler,
    ContextTypes,
    filters,
)

from vndb_client import VndbClient
from config import Config
from utils import Formatter, ErrorHandler, QueryBuilder
from detailed_handlers import get_detail_handlers


# ======================
# LOGGING
# ======================
logging.basicConfig(
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
    level=Config.LOG_LEVEL
)
logger = logging.getLogger(__name__)


# ======================
# STATES
# ======================
SEARCH_VN, SELECT_VN, VN_DETAILS = range(3)
SEARCH_CHARACTER, SELECT_CHARACTER = range(2)
SEARCH_RELEASE, SELECT_RELEASE = range(2)
SEARCH_STAFF, SELECT_STAFF = range(2)


# ======================
# CLIENT
# ======================
vndb_client = VndbClient(use_sandbox=Config.USE_SANDBOX)


# ======================
# HELPERS
# ======================
HTML_HELP_HEADER = "<b>VNDB Telegram Bot</b>\n\n"


# ======================
# HANDLERS
# ======================
class BotHandlers:

    @staticmethod
    async def start(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
        text = """
<b>Добро пожаловать в VNDB Telegram Бот!</b>

Этот бот позволяет искать визуальные новеллы, персонажей и релизы из VNDB.

<b>Команды:</b>
/search - поиск VN
/char - персонажи
/release - релизы
/staff - сотрудники
/producer - продюсеры
/tag - теги
/trait - черты
/quote - цитаты
/help - помощь
        """

        await update.message.reply_text(text, parse_mode="HTML")

    # ======================
    # HELP
    # ======================
    @staticmethod
    async def help_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
        text = """
<b>Справка по командам</b>

<b>Поиск:</b>
/search &lt;название&gt;
/char &lt;имя&gt;
/release &lt;название&gt;
/staff &lt;имя&gt;
/producer &lt;имя&gt;

<b>Информация:</b>
/tag - популярные теги
/trait - черты
/quote &lt;число&gt; - цитаты
/stats - статистика
/schema - API

<b>Детальный просмотр:</b>
/vn_detail &lt;id&gt;
/char_detail &lt;id&gt;
/release_detail &lt;id&gt;

<b>Пример:</b>
/search Steins Gate
/char Okabe
/vn_detail v17

<b>Ссылка:</b>
<a href="https://git.kotac.ru/King-of-the-all-Cookies/ayako/src/branch/main/EXAMPLES.md">
Примеры команд
</a>
        """

        await update.message.reply_text(text, parse_mode="HTML")

    # ======================
    # STATS
    # ======================
    @staticmethod
    async def stats(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
        try:
            stats = await vndb_client.get_stats()

            text = f"""
<b>Статистика VNDB</b>

VN: {stats.get('vn', 0)}
Characters: {stats.get('chars', 0)}
Releases: {stats.get('releases', 0)}
Producers: {stats.get('producers', 0)}
Staff: {stats.get('staff', 0)}
"""

            await update.message.reply_text(text, parse_mode="HTML")

        except Exception as e:
            logger.error(e)
            await update.message.reply_text(f"❌ {ErrorHandler.format_error(e)}")

    # ======================
    # SCHEMA
    # ======================
    @staticmethod
    async def schema(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
        try:
            await update.message.reply_text("⏳ Загружаю схему...", parse_mode="HTML")

            schema = await vndb_client.get_schema()

            text = "<b>API Schema VNDB</b>\n\n"

            if "db_types" in schema:
                text += "<b>Типы:</b>\n"
                for k in list(schema["db_types"].keys())[:5]:
                    text += f"• {k}\n"

            text += "\n<a href='https://api.vndb.org/kana'>Документация API</a>"

            await update.message.reply_text(text, parse_mode="HTML")

        except Exception as e:
            logger.error(e)
            await update.message.reply_text(f"❌ {ErrorHandler.format_error(e)}")

    # ======================
    # SEARCH VN
    # ======================
    @staticmethod
    async def search_vn(update: Update, context: ContextTypes.DEFAULT_TYPE):
        try:
            query = " ".join(context.args)

            if not query:
                await update.message.reply_text("Введите название")
                return ConversationHandler.END

            await update.message.reply_text(
                f"<b>Поиск:</b> {query}",
                parse_mode="HTML"
            )

            results = await vndb_client.query_vn(
                filters=["search", "=", query.strip()],
                fields=["id", "title"],
                results=10
            )

            if not results.get("results"):
                await update.message.reply_text("Ничего не найдено")
                return ConversationHandler.END

            text = "<b>Результаты:</b>\n\n"

            for vn in results["results"]:
                text += f"{vn.get('id')} - {vn.get('title')}\n"

            await update.message.reply_text(text, parse_mode="HTML")

            # images
            for vn in results["results"]:
                text += f"{vn.get('id')} - {vn.get('title')}\n"

                # 👇 ДОБАВЬ ССЫЛКУ НА VNDB
                text += f"https://vndb.org/{vn.get('id')}\n\n"

        except Exception as e:
            logger.error(e)
            await update.message.reply_text(f"❌ {ErrorHandler.format_error(e)}")

        return ConversationHandler.END

    # ======================
    # CHARACTER
    # ======================
    @staticmethod
    async def search_character(update: Update, context: ContextTypes.DEFAULT_TYPE):
        try:
            query = " ".join(context.args)

            if not query:
                await update.message.reply_text("Введите имя")
                return ConversationHandler.END

            results = await vndb_client.query_character(
                filters=["search", "=", query.strip()],
                fields=["id", "name", "original"],
                results=10
            )

            text = "<b>Персонажи:</b>\n\n"

            for c in results.get("results", []):
                text += f"{c.get('id')} - {c.get('name')} ({c.get('original', '')})\n"

            await update.message.reply_text(text, parse_mode="HTML")

        except Exception as e:
            logger.error(e)
            await update.message.reply_text(f"❌ {ErrorHandler.format_error(e)}")

        return ConversationHandler.END

    # ======================
    # RELEASE
    # ======================
    @staticmethod
    async def search_release(update: Update, context: ContextTypes.DEFAULT_TYPE):
        try:
            query = " ".join(context.args)

            results = await vndb_client.query_release(
                filters=["search", "=", query.strip()],   # ✔️ важно
                fields=["id", "title"],
                results=10
            )

            text = "<b>Релизы:</b>\n\n"

            for r in results.get("results", []):
                text += f"{r.get('id')} - {r.get('title')}\n"

            await update.message.reply_text(text, parse_mode="HTML")

        except Exception as e:
            logger.error(e)
            await update.message.reply_text(f"❌ {ErrorHandler.format_error(e)}")

        return ConversationHandler.END


# ======================
# MAIN
# ======================
def main():
    Config.validate()

    app = Application.builder().token(Config.TELEGRAM_BOT_TOKEN).build()

    app.add_handler(CommandHandler("start", BotHandlers.start))
    app.add_handler(CommandHandler("help", BotHandlers.help_command))
    app.add_handler(CommandHandler("stats", BotHandlers.stats))
    app.add_handler(CommandHandler("schema", BotHandlers.schema))
    app.add_handler(CommandHandler("search", BotHandlers.search_vn))
    app.add_handler(CommandHandler("char", BotHandlers.search_character))
    app.add_handler(CommandHandler("release", BotHandlers.search_release))

    for h in get_detail_handlers():
        app.add_handler(h)

    logger.info("Bot started")
    app.run_polling()


if __name__ == "__main__":
    main()