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# ---------------------------------------------------------------------------------
# Name: MessageMonitor
# Description: Monitor messages for trigger words in all chats.
# Author: @hikka_mods
# ---------------------------------------------------------------------------------
# meta developer: @hikka_mods
# scope: MessageMonitor
# scope: MessageMonitor 0.0.1
# ---------------------------------------------------------------------------------

import logging
import re
from typing import List, Optional

from telethon.types import Message

from .. import loader, utils

logger = logging.getLogger(__name__)


@loader.tds
class MessageMonitor(loader.Module):
    """
    Monitor messages for trigger words in all chats.
    """

    strings = {
        "name": "MessageMonitor",
        "triggers_set": "<emoji document_id=5854762571659218443>✅</emoji> Trigger words have been set: <code>{}</code>",
        "triggers_not_set": "<emoji document_id=5854929766146118183>❌</emoji> Trigger words have not been set",
        "target_set": "<emoji document_id=5854762571659218443>✅</emoji> Target chat for notifications has been set",
        "target_not_set": "<emoji document_id=5854929766146118183>❌</emoji> Target chat for notifications has not been set",
        "monitoring_started": "<emoji document_id=5188311512791393083>🌎</emoji> Monitoring has started",
        "monitoring_stopped": "<emoji document_id=5854929766146118183>❌</emoji> Monitoring has stopped",
        "monitoring_status": "<emoji document_id=5188311512791393083>🌎</emoji> Monitoring <b>{}</b>",
        "triggers_example": "<emoji document_id=5854929766146118183>❌</emoji> Example: <code>.triggers word1 word2</code>",
        "monitoring_status_on": "<emoji document_id=5854762571659218443>✅</emoji> enabled",
        "monitoring_status_off": "<emoji document_id=5854929766146118183>❌</emoji> disabled",
        "ignore_set": "<emoji document_id=5854762571659218443>✅</emoji> Ignored chats have been set: <code>{}</code>",
        "ignore_none": "<emoji document_id=5854929766146118183>❌</emoji> Ignored chats have not been set",
        "ignore_example": "<emoji document_id=5854929766146118183>❌</emoji> Example: <code>.ignore 123456789 -987654321</code> (chat IDs)",
        "no_reply": "<emoji document_id=5854929766146118183>❌</emoji> Reply to a message in the desired chat or specify its ID",
        "monitoring_msg": (
            "<emoji document_id=5854929766146118183>🚨</emoji> <b>Trigger word detected!</b> <emoji document_id=5854929766146118183>🚨</emoji>\n\n"
            "<b>Chat:</b> <code>{}</code>\n"
            "<b>User:</b> {}\n"
            "<b>Link:</b> <a href='{}'>{}</a>\n\n"
            "<b>Message:</b>\n{}"
        ),
    }

    strings_ru = {
        "triggers_set": "<emoji document_id=5854762571659218443>✅</emoji> Триггерные слова установлены: <code>{}</code>",
        "triggers_not_set": "<emoji document_id=5854929766146118183>❌</emoji> Триггерные слова не установлены",
        "target_set": "<emoji document_id=5854762571659218443>✅</emoji> Целевой чат для уведомлений установлен",
        "target_not_set": "<emoji document_id=5854929766146118183>❌</emoji> Целевой чат для уведомлений не установлен",
        "monitoring_started": "<emoji document_id=5188311512791393083>🌎</emoji> Мониторинг запущен",
        "monitoring_stopped": "<emoji document_id=5854929766146118183>❌</emoji> Мониторинг остановлен",
        "monitoring_status": "<emoji document_id=5188311512791393083>🌎</emoji> Мониторинг <b>{}</b>",
        "triggers_example": "<emoji document_id=5854929766146118183>❌</emoji> Пример: <code>.triggers слово1 слово2</code>",
        "monitoring_status_on": "<emoji document_id=5854762571659218443>✅</emoji> включен",
        "monitoring_status_off": "<emoji document_id=5854929766146118183>❌</emoji> выключен",
        "ignore_set": "<emoji document_id=5854762571659218443>✅</emoji> Игнорируемые чаты установлены: <code>{}</code>",
        "ignore_none": "<emoji document_id=5854929766146118183>❌</emoji> Игнорируемые чаты не установлены",
        "ignore_example": "<emoji document_id=5854929766146118183>❌</emoji> Пример: <code>.ignore 123456789 -987654321</code> (ID чатов)",
        "no_reply": "<emoji document_id=5854929766146118183>❌</emoji> Ответьте на сообщение в нужном чате или укажите его ID",
        "monitoring_msg": (
            "<emoji document_id=5854929766146118183>🚨</emoji> <b>Обнаружено триггерное слово!</b> <emoji document_id=5854929766146118183>🚨</emoji>\n\n"
            "<b>Чат:</b> <code>{}</code>\n"
            "<b>Пользователь:</b> {}\n"
            "<b>Ссылка:</b> <a href='{}'>{}</a>\n\n"
            "<b>Сообщение:</b>\n{}"
        ),
    }

    def __init__(self):
        self.config = loader.ModuleConfig(
            loader.ConfigValue(
                "triggers",
                [],
                "List of trigger words to monitor",
                validator=loader.validators.Series(),
            ),
            loader.ConfigValue(
                "target_chat",
                None,
                "Target chat ID for notifications",
                validator=loader.validators.Integer(),
            ),
            loader.ConfigValue(
                "ignore_chats",
                [],
                "List of chat IDs to ignore",
                validator=loader.validators.Series(),
            ),
        )
        self._triggers: List[str] = []
        self._target_chat: Optional[int] = None
        self._ignore_chats: List[int] = []
        self._compiled_patterns: List[re.Pattern] = []

    async def client_ready(self, client, db):
        """Initialize module when client is ready"""
        await self._update_config()
        self.client = client

    async def _update_config(self):
        """Update internal configuration and compile regex patterns"""
        self._triggers = [trigger.lower() for trigger in self.config["triggers"]]
        self._target_chat = self.config["target_chat"]
        self._ignore_chats = [
            int(chat_id)
            for chat_id in self.config["ignore_chats"]
            if str(chat_id).lstrip("-").isdigit()
        ]

        self._compiled_patterns = [
            re.compile(r"\b" + re.escape(trigger) + r"\b", re.IGNORECASE)
            for trigger in self._triggers
        ]

    @loader.command(
        ru_doc="Показать статус мониторинга",
        en_doc="Show monitoring status",
    )
    async def status(self, message: Message):
        """Show current monitoring status"""
        status_text = (
            self.strings["monitoring_status_on"]
            if self._target_chat and self._triggers
            else self.strings["monitoring_status_off"]
        )
        await utils.answer(
            message, self.strings["monitoring_status"].format(status_text)
        )

    @loader.command(
        ru_doc="Установить триггерные слова. Пример: .triggers слово1 слово2",
        en_doc="Set trigger words. Example: .triggers word1 word2",
    )
    async def triggers(self, message: Message):
        """Set trigger words"""
        args = utils.get_args(message)
        if not args:
            await utils.answer(message, self.strings["triggers_example"])
            return

        self._triggers = [arg.lower() for arg in args]
        self.config["triggers"] = self._triggers
        await self._update_config()
        await utils.answer(
            message, self.strings["triggers_set"].format(", ".join(self._triggers))
        )

    @loader.command(
        ru_doc="Установить целевой чат для уведомлений. Ответьте на сообщение или укажите ID",
        en_doc="Set target chat for notifications. Reply to a message or provide its ID",
    )
    async def settarget(self, message: Message):
        """Set target chat"""
        args = utils.get_args_raw(message)
        chat_id = None

        if getattr(message, "is_reply", False):
            reply_message = await message.get_reply_message()
            if reply_message and hasattr(reply_message, "chat_id"):
                chat_id = reply_message.chat_id
        elif args and (args.isdigit() or (args.startswith("-") and args[1:].isdigit())):
            chat_id = int(args)

        if chat_id:
            self.config["target_chat"] = chat_id
            self._target_chat = chat_id
            await utils.answer(message, self.strings["target_set"])
        else:
            await utils.answer(message, self.strings["no_reply"])

    @loader.command(
        ru_doc="Установить игнорируемые чаты. Укажите ID чатов через пробел.",
        en_doc="Set ignored chats. Provide chat IDs separated by space.",
    )
    async def ignore(self, message: Message):
        """Set ignored chats"""
        args = utils.get_args(message)
        if not args:
            await utils.answer(message, self.strings["ignore_example"])
            return

        valid_ids = []
        for arg in args:
            if arg.isdigit() or (arg.startswith("-") and arg[1:].isdigit()):
                valid_ids.append(int(arg))

        self.config["ignore_chats"] = valid_ids
        await self._update_config()

        if valid_ids:
            await utils.answer(
                message,
                self.strings["ignore_set"].format(", ".join(map(str, valid_ids))),
            )
        else:
            await utils.answer(message, self.strings["ignore_none"])

    @loader.watcher(out=False, only_messages=True)
    async def message_watcher(self, message: Message):
        """Watch for messages containing trigger words"""
        if not self._target_chat or not self._triggers:
            return

        chat_id = getattr(message, "chat_id", None)
        if chat_id and chat_id in self._ignore_chats:
            logger.debug(f"Message in ignored chat: {chat_id}. Skipping monitoring.")
            return

        text = getattr(message, "text", "")
        if not text:
            return

        found_triggers = [
            trigger
            for pattern, trigger in zip(self._compiled_patterns, self._triggers)
            if pattern.search(text)
        ]

        if not found_triggers:
            return

        try:
            chat = await message.get_chat()
            chat_title = getattr(
                chat,
                "title",
                "Личные сообщения"
                if getattr(message, "is_private", False)
                else f"Чат с ID {chat_id}",
            )

            sender = await message.get_sender()
            if sender:
                sender_name = sender.first_name
                if getattr(sender, "last_name", None):
                    sender_name += f" {sender.last_name}"
                if not sender_name:
                    sender_name = getattr(
                        sender, "username", "Неизвестный пользователь"
                    )
            else:
                sender_name = "Неизвестный пользователь"

            link = await self._get_message_link(message, sender)

            await self.client.send_message(
                self._target_chat,
                self.strings["monitoring_msg"].format(
                    chat_title,
                    chat_id,
                    sender_name,
                    link,
                    text,
                ),
                parse_mode="HTML",
            )
            logger.debug(
                f"Sent notification about trigger word(s) {found_triggers} to chat {self._target_chat}"
            )
        except Exception as e:
            logger.error(f"Error processing message: {e}")

    async def _get_message_link(self, message: Message, sender) -> str:
        """Generate message link based on message type"""
        message_id = message.id

        if getattr(message, "to_id", None):
            to_id_obj = getattr(message, "to_id")
            if getattr(to_id_obj, "channel_id", None):
                return f"https://t.me/c/{to_id_obj.channel_id}/{message_id}"

        if (
            getattr(message, "is_private", False)
            and sender
            and getattr(sender, "username", None)
        ):
            return f"https://t.me/{sender.username}/{message_id}"

        return f"https://t.me/c/{message_id}"