#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""Simple HTTP API server for querying working proxies."""

import BaseHTTPServer
import json
import threading
import mysqlite
from misc import _log


class ProxyAPIHandler(BaseHTTPServer.BaseHTTPRequestHandler):
    """HTTP request handler for proxy API."""

    # Shared database connection (set by server)
    database = None

    def log_message(self, format, *args):
        """Suppress default logging, use our own."""
        pass

    def send_json(self, data, status=200):
        """Send JSON response."""
        body = json.dumps(data, indent=2)
        self.send_response(status)
        self.send_header('Content-Type', 'application/json')
        self.send_header('Content-Length', len(body))
        self.send_header('Access-Control-Allow-Origin', '*')
        self.end_headers()
        self.wfile.write(body)

    def send_text(self, text, status=200):
        """Send plain text response."""
        self.send_response(status)
        self.send_header('Content-Type', 'text/plain')
        self.send_header('Content-Length', len(text))
        self.end_headers()
        self.wfile.write(text)

    def do_GET(self):
        """Handle GET requests."""
        path = self.path.split('?')[0]

        if path == '/':
            self.handle_index()
        elif path == '/proxies':
            self.handle_proxies()
        elif path == '/proxies/count':
            self.handle_count()
        elif path == '/health':
            self.handle_health()
        else:
            self.send_json({'error': 'not found'}, 404)

    def handle_index(self):
        """Show available endpoints."""
        endpoints = {
            'endpoints': {
                '/proxies': 'list working proxies (params: limit, proto, country)',
                '/proxies/count': 'count working proxies',
                '/health': 'health check',
            }
        }
        self.send_json(endpoints)

    def handle_proxies(self):
        """List working proxies."""
        # Parse query params
        params = {}
        if '?' in self.path:
            query = self.path.split('?')[1]
            for pair in query.split('&'):
                if '=' in pair:
                    k, v = pair.split('=', 1)
                    params[k] = v

        limit = min(int(params.get('limit', 100)), 1000)
        proto = params.get('proto', '')
        country = params.get('country', '')
        format = params.get('format', 'json')

        # Build query
        sql = 'SELECT ip, port, proto, country FROM proxylist WHERE failed=0'
        args = []

        if proto:
            sql += ' AND proto=?'
            args.append(proto)
        if country:
            sql += ' AND country=?'
            args.append(country.upper())

        sql += ' ORDER BY tested DESC LIMIT ?'
        args.append(limit)

        try:
            db = mysqlite.mysqlite(self.database, str)
            rows = db.execute(sql, args).fetchall()

            if format == 'plain':
                # Plain text format: ip:port per line
                lines = ['%s:%s' % (row[0], row[1]) for row in rows]
                self.send_text('\n'.join(lines))
            else:
                # JSON format
                proxies = []
                for row in rows:
                    proxies.append({
                        'ip': row[0],
                        'port': row[1],
                        'proto': row[2],
                        'country': row[3]
                    })
                self.send_json({'count': len(proxies), 'proxies': proxies})

        except Exception as e:
            self.send_json({'error': str(e)}, 500)

    def handle_count(self):
        """Count working proxies."""
        try:
            db = mysqlite.mysqlite(self.database, str)
            row = db.execute('SELECT COUNT(*) FROM proxylist WHERE failed=0').fetchone()
            count = row[0] if row else 0
            self.send_json({'count': count})
        except Exception as e:
            self.send_json({'error': str(e)}, 500)

    def handle_health(self):
        """Health check endpoint."""
        self.send_json({'status': 'ok'})


class ProxyAPIServer(threading.Thread):
    """Threaded HTTP API server."""

    def __init__(self, host, port, database):
        threading.Thread.__init__(self)
        self.host = host
        self.port = port
        self.database = database
        self.daemon = True
        self.server = None

    def run(self):
        """Start the HTTP server."""
        ProxyAPIHandler.database = self.database
        self.server = BaseHTTPServer.HTTPServer((self.host, self.port), ProxyAPIHandler)
        _log('httpd listening on %s:%d' % (self.host, self.port), 'info')
        self.server.serve_forever()

    def stop(self):
        """Stop the HTTP server."""
        if self.server:
            self.server.shutdown()


if __name__ == '__main__':
    # Test server
    import sys
    host = '127.0.0.1'
    port = 8081
    database = 'websites.sqlite'

    if len(sys.argv) > 1:
        database = sys.argv[1]

    _log('starting test server on %s:%d (db: %s)' % (host, port, database), 'info')
    server = ProxyAPIServer(host, port, database)
    server.start()

    try:
        while True:
            import time
            time.sleep(1)
    except KeyboardInterrupt:
        server.stop()
        _log('server stopped', 'info')