# This file is placed in the Public Domain.


import logging
import os
import sys
import time


from http.server import HTTPServer, BaseHTTPRequestHandler


from sbn.command import Cfg
from sbn.objects import Object
from sbn.persist import Workdir
from sbn.threads import Thread


"init"


def init():
    try:
        rest = REST((Config.hostname, int(Config.port)), RESTHandler)
        rest.start()
        logging.warning("http://%s:%s", Config.hostname, Config.port)
        return rest
    except OSError as ex:
        logging.error(str(ex))


"config"


class Config:

    debug = False
    hostname = "localhost"
    port     = 10102


"rest"


class REST(HTTPServer, Object):

    allow_reuse_address = True
    daemon_thread = True

    def __init__(self, *args, **kwargs):
        HTTPServer.__init__(self, *args, **kwargs)
        Object.__init__(self)
        self.host = args[0]
        self._last = time.time()
        self._starttime = time.time()
        self._status = "start"

    def exit(self):
        self._status = ""
        time.sleep(0.2)
        self.shutdown()

    def start(self):
        self._status = "ok"
        Thread.launch(self.serve_forever)

    def request(self):
        self._last = time.time()

    def error(self, _request, _addr):
        exctype, excvalue, _trb = sys.exc_info()
        exc = exctype(excvalue)
        logging.exception(exc)


"handler"


class RESTHandler(BaseHTTPRequestHandler):

    def setup(self):
        BaseHTTPRequestHandler.setup(self)
        self._ip = self.client_address[0]
        self._size = 0

    def send(self, txt):
        self.wfile.write(bytes(txt, "utf-8"))
        self.wfile.flush()

    def write_header(self, htype='text/plain'):
        self.send_response(200)
        self.send_header('Content-type', '%s; charset=%s ' % (htype, "utf-8"))
        self.send_header('Server', "1")
        self.end_headers()

    def do_GET(self):
        if Cfg.debug:
            return
        if "favicon" in self.path:
            return
        if self.path == "/":
            self.write_header("text/html")
            txt = ""
            for fnm in Workdir.kinds():
                txt += f'<a href="http://{Config.hostname}:{Config.port}/{fnm}">{fnm}</a><br>\n'
            self.send(html(txt.strip()))
            return
        fnm = os.path.join(Workdir.workdir(), self.path)
        fnm = os.path.abspath(fnm)
        if os.path.isdir(fnm):
            self.write_header("text/html")
            txt = ""
            for fnn in os.listdir(fnm):
                filename = self.path  + os.sep + fnn
                txt += f'<a href="http://{Config.hostname}:{Config.port}/{filename}">{filename}</a><br>\n'
            self.send(txt.strip())
            return
        try:
            with open(fnm, "r", encoding="utf-8") as file:
                txt = file.read()
                file.close()
            self.write_header("text/html")
            self.send(html(txt))
        except (TypeError, FileNotFoundError, IsADirectoryError) as ex:
            self.send_response(404)
            logging.exception(ex)
            self.end_headers()

    def log(self, code):
        pass


"data"


def html(txt):
    return """<!doctype html>
<html>
   %s
</html>
""" % txt
