from flask import Blueprint, render_template, session, redirect, url_for, jsonify, request
import sqlite3
import transmission_rpc
import sys
import os

# Import format functions
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
from utils.format import format_file_size, format_status

transmission_bp = Blueprint('transmission', __name__)

def get_db_connection():
    conn = sqlite3.connect('pt_manager.db')
    conn.row_factory = sqlite3.Row
    return conn

def get_transmission_client():
    conn = get_db_connection()
    client_config = conn.execute(
        "SELECT * FROM clients WHERE name = 'transmission' AND enabled = 1"
    ).fetchone()
    conn.close()
    
    if not client_config:
        return None
    
    try:
        tc = transmission_rpc.Client(
            host=client_config['host'],
            port=client_config['port'],
            username=client_config['username'],
            password=client_config['password']
        )
        return tc
    except Exception as e:
        print(f"Failed to connect to Transmission: {e}")
        return None

@transmission_bp.route('/transmission')
def transmission_index():
    if 'user_id' not in session:
        return redirect(url_for('auth.login'))
    return render_template('transmission/index.html')

@transmission_bp.route('/transmission/torrents')
def torrents():
    if 'user_id' not in session:
        return redirect(url_for('auth.login'))
    
    tc = get_transmission_client()
    if not tc:
        return render_template('transmission/torrents.html', error='Transmission client not configured or unavailable')
    
    try:
        torrents = tc.get_torrents()
        # Process torrents to format file sizes and statuses
        processed_torrents = []
        for torrent in torrents:
            # Create a dictionary with the torrent attributes we need
            processed_torrent = {
                'id': torrent.id,
                'name': torrent.name,
                'totalSize': format_file_size(torrent.total_size),
                'percentDone': torrent.progress,
                'status': torrent.status,
                'statusString': format_status(torrent.status),
                'peersSendingToUs': getattr(torrent, 'peers_sending_to_us', 0),
                'peersGettingFromUs': getattr(torrent, 'peers_getting_from_us', 0)
            }
            processed_torrents.append(processed_torrent)
        
        return render_template('transmission/torrents.html', torrents=processed_torrents)
    except Exception as e:
        return render_template('transmission/torrents.html', error=f'Failed to fetch torrents: {str(e)}')

@transmission_bp.route('/transmission/torrent/<int:torrent_id>/stop', methods=['POST'])
def stop_torrent(torrent_id):
    if 'user_id' not in session:
        return jsonify({'error': 'Authentication required'}), 401
    
    tc = get_transmission_client()
    if not tc:
        return jsonify({'error': 'Transmission client not configured or unavailable'}), 500
    
    try:
        tc.stop_torrent(ids=[torrent_id])
        return jsonify({'success': True})
    except Exception as e:
        return jsonify({'error': str(e)}), 500

@transmission_bp.route('/transmission/torrent/<int:torrent_id>/start', methods=['POST'])
def start_torrent(torrent_id):
    if 'user_id' not in session:
        return jsonify({'error': 'Authentication required'}), 401
    
    tc = get_transmission_client()
    if not tc:
        return jsonify({'error': 'Transmission client not configured or unavailable'}), 500
    
    try:
        tc.start_torrent(ids=[torrent_id])
        return jsonify({'success': True})
    except Exception as e:
        return jsonify({'error': str(e)}), 500

@transmission_bp.route('/transmission/torrent/<int:torrent_id>/remove', methods=['POST'])
def remove_torrent(torrent_id):
    if 'user_id' not in session:
        return jsonify({'error': 'Authentication required'}), 401
    
    tc = get_transmission_client()
    if not tc:
        return jsonify({'error': 'Transmission client not configured or unavailable'}), 500
    
    try:
        # Remove torrent and data
        tc.remove_torrent(ids=[torrent_id], delete_data=True)
        return jsonify({'success': True})
    except Exception as e:
        return jsonify({'error': str(e)}), 500