import requests
import logging
import os

logger = logging.getLogger(__name__)

class MattermostClient:
    def __init__(self, url, token):
        self.url = url.rstrip('/')
        self.token = token
        self.api_url = f"{self.url}/api/v4"
        self.headers = {
            'Authorization': f'Bearer {self.token}',
            'Content-Type': 'application/json'
        }
        self.webhook_url = os.getenv('MATTERMOST_WEBHOOK_URL')
    
    def test_connection(self):
        """Prueba la conexión con Mattermost"""
        try:
            response = requests.get(
                f"{self.api_url}/users/me",
                headers=self.headers,
                timeout=10
            )
            response.raise_for_status()
            user = response.json()
            logger.info(f"Conexión exitosa con Mattermost. Bot: {user.get('username')}")
            return {
                'status': 'success',
                'bot_username': user.get('username'),
                'bot_id': user.get('id')
            }
        except Exception as e:
            logger.error(f"Error conectando con Mattermost: {str(e)}")
            return {'status': 'error', 'message': str(e)}
    
    def get_channel_by_name(self, team_name, channel_name):
        """Obtiene información de un canal por nombre"""
        try:
            # Primero obtener el team
            response = requests.get(
                f"{self.api_url}/teams/name/{team_name}",
                headers=self.headers,
                timeout=10
            )
            response.raise_for_status()
            team = response.json()
            team_id = team['id']
            
            # Luego obtener el canal
            response = requests.get(
                f"{self.api_url}/teams/{team_id}/channels/name/{channel_name}",
                headers=self.headers,
                timeout=10
            )
            response.raise_for_status()
            return response.json()
        except Exception as e:
            logger.error(f"Error obteniendo canal {channel_name}: {str(e)}")
            return None
    
    def post_message(self, channel_id, message, props=None):
        """Publica un mensaje en un canal"""
        try:
            payload = {
                'channel_id': channel_id,
                'message': message
            }
            if props:
                payload['props'] = props
            
            response = requests.post(
                f"{self.api_url}/posts",
                headers=self.headers,
                json=payload,
                timeout=10
            )
            response.raise_for_status()
            logger.info(f"Mensaje publicado en canal {channel_id}")
            return response.json()
        except Exception as e:
            logger.error(f"Error publicando mensaje: {str(e)}")
            return None
    
    def post_message_webhook(self, message, username=None, icon_emoji=None):
        """Publica un mensaje usando webhook incoming"""
        try:
            payload = {'text': message}
            if username:
                payload['username'] = username
            if icon_emoji:
                payload['icon_emoji'] = icon_emoji
            
            response = requests.post(
                self.webhook_url,
                json=payload,
                timeout=10
            )
            response.raise_for_status()
            logger.info("Mensaje publicado via webhook")
            return True
        except Exception as e:
            logger.error(f"Error publicando via webhook: {str(e)}")
            return False
    
    def get_file(self, file_id):
        """Descarga un archivo de Mattermost"""
        try:
            response = requests.get(
                f"{self.api_url}/files/{file_id}",
                headers=self.headers,
                timeout=30
            )
            response.raise_for_status()
            return response.content
        except Exception as e:
            logger.error(f"Error descargando archivo {file_id}: {str(e)}")
            return None
    
    def get_file_info(self, file_id):
        """Obtiene información de un archivo"""
        try:
            response = requests.get(
                f"{self.api_url}/files/{file_id}/info",
                headers=self.headers,
                timeout=10
            )
            response.raise_for_status()
            return response.json()
        except Exception as e:
            logger.error(f"Error obteniendo info de archivo {file_id}: {str(e)}")
            return None
    
    def upload_file(self, channel_id, file_content, filename):
        """Sube un archivo a Mattermost"""
        try:
            files = {
                'files': (filename, file_content)
            }
            data = {
                'channel_id': channel_id
            }
            headers = {
                'Authorization': f'Bearer {self.token}'
            }
            
            response = requests.post(
                f"{self.api_url}/files",
                headers=headers,
                files=files,
                data=data,
                timeout=30
            )
            response.raise_for_status()
            return response.json()
        except Exception as e:
            logger.error(f"Error subiendo archivo: {str(e)}")
            return None
    
    def add_reaction(self, post_id, emoji_name):
        """Agrega una reacción a un post"""
        try:
            # Obtener el user_id del bot
            me = requests.get(
                f"{self.api_url}/users/me",
                headers=self.headers,
                timeout=10
            ).json()
            
            payload = {
                'user_id': me['id'],
                'post_id': post_id,
                'emoji_name': emoji_name
            }
            
            response = requests.post(
                f"{self.api_url}/reactions",
                headers=self.headers,
                json=payload,
                timeout=10
            )
            response.raise_for_status()
            return True
        except Exception as e:
            logger.error(f"Error agregando reacción: {str(e)}")
            return False
    
    def get_user_by_username(self, username):
        """Obtiene información de un usuario por username"""
        try:
            response = requests.get(
                f"{self.api_url}/users/username/{username}",
                headers=self.headers,
                timeout=10
            )
            response.raise_for_status()
            return response.json()
        except Exception as e:
            logger.error(f"Error obteniendo usuario {username}: {str(e)}")
            return None