#!/usr/bin/python3
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
import json
import os
from pathlib import Path
from license import LicenseManager
from my_log import get_logger
log = get_logger()

global LIC_MANAGER
LIC_MANAGER = None

class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):

    def __init__(self, *args, **kwargs):
        self.handler_map = {
            '/vcast/lic_use_info': self.send_lic_info,
            '/vcast/request_lic': self.send_request_lic,
            '/vcast/queue_info': self.send_queue_info,
        }
        super().__init__(*args, **kwargs)

    def log_message(self, format, *args):
        return  # 重写该方法以禁用日志输出

    def do_GET(self):
        if self.path in self.handler_map:
            self.handler_map[self.path]()
            self.wfile.flush()
            self.close_connection = True
            return
        path = self.path
        if path == '/':
            path = '/index.html'
        path = path.strip('/')
        if not self.send_file(path):
            self.send_404()
        self.wfile.flush()
        self.close_connection = True

    def send_lic_info(self):
        data = LIC_MANAGER.get_licenses_info()
        resp_str = json.dumps(data).encode('utf-8')
        self.send_response(200)
        self.send_header('Content-type', 'text/json')
        self.send_header('Content-Length', len(resp_str))
        self.end_headers()
        self.wfile.write(resp_str)
        self.wfile.flush()
        self.close_connection = True

    def send_queue_info(self):
        data = LIC_MANAGER.get_wait_queue()
        resp_str = json.dumps(data).encode('utf-8')
        self.send_response(200)
        self.send_header('Content-type', 'text/json')
        self.send_header('Content-Length', len(resp_str))
        self.end_headers()
        self.wfile.write(resp_str)
        self.wfile.flush()
        self.close_connection = True

    def send_request_lic(self):
        content_length = int(self.headers.get('Content-Length'))
        data = self.rfile.read(content_length)
        data = json.loads(data)
        log.info(f"request license: {data['user']}@{data['host']}")
        resp = LIC_MANAGER.request(data["user"], data["host"])
        resp_str = json.dumps(resp).encode('utf-8')
        self.send_response(200)
        self.send_header('Content-type', 'text/json')
        self.send_header('Content-Length', len(resp_str))
        self.end_headers()
        self.wfile.write(resp_str)
        self.wfile.flush()
        self.close_connection = True

    def send_404(self):
        self.send_response(404)
        self.send_header('Content-type', 'text/html')
        resp_str = "<h1>404 Not Found</h1><p>The page you are looking for does not exist.</p>".encode('utf-8')
        self.send_header('Content-Length', len(resp_str))
        self.end_headers()
        self.wfile.write(resp_str)
        self.wfile.flush()
        self.close_connection = True


    def send_file(self, file_path) -> bool:
        file_path =str(Path(os.path.abspath(__file__)).parent.joinpath(file_path))
        log.info(f"clinet request: [{file_path}]")
        if not os.path.isfile(file_path):
            return False
        self.send_response(200)
        mime_type = self.get_mime_type(file_path)
        self.send_header('Content-type', mime_type)
        if mime_type.startswith('text/'):
            self.send_header('Content-Disposition', f'inline; filename={os.path.basename(file_path)}')
        else:
            self.send_header('Content-Disposition', f'attachment; filename={os.path.basename(file_path)}')
        self.end_headers()
        with open(file_path, 'rb') as f:
            self.wfile.write(f.read())
        return True

    def get_mime_type(self, file_path):
        ext = os.path.splitext(file_path)[1]
        if ext == '.txt':
            return 'text/plain'
        elif ext == '.js':
            return 'application/javascript'
        elif ext == '.html':
            return 'text/html'
        elif ext == '.css':
            return 'text/css'
        # 添加更多 MIME 类型根据需要
        return 'application/octet-stream'  # 默认类型
def run(server_class=ThreadingHTTPServer, handler_class=SimpleHTTPRequestHandler, port=8088):
    server_address = ('0.0.0.0', port)
    httpd = server_class(server_address, handler_class)
    log.info(f'Starting threaded server on http://{server_address[0]}:{server_address[1]} ...')
    httpd.serve_forever()

if __name__ == "__main__":
    LIC_MANAGER = LicenseManager()
    try:
        if len(os.sys.argv) > 1:
            run(port=int(os.sys.argv[1]))
        else:
            run()
    except KeyboardInterrupt:
        log.info("Keyboard interrupt received, shutting down...")
    finally:
        LIC_MANAGER.exit()
        log.info("Server stopped")