plomlompom.com Git - plomtask/blob - plomtask/http.py

   1 """Web server stuff."""
   2 from http.server import BaseHTTPRequestHandler
   3 from http.server import HTTPServer
   4 from urllib.parse import urlparse, parse_qs
   5 from os.path import split as path_split
   6 from jinja2 import Environment as JinjaEnv, FileSystemLoader as JinjaFSLoader
   7 from plomtask.days import Day
   8 from plomtask.misc import HandledException
   9 from plomtask.db import DatabaseConnection
  10
  11 TEMPLATES_DIR = 'templates'
  12
  13
  14 class TaskServer(HTTPServer):
  15     """Variant of HTTPServer that knows .jinja as Jinja Environment."""
  16
  17     def __init__(self, db_file, *args, **kwargs):
  18         super().__init__(*args, **kwargs)
  19         self.db = db_file
  20         self.jinja = JinjaEnv(loader=JinjaFSLoader(TEMPLATES_DIR))
  21
  22
  23 class TaskHandler(BaseHTTPRequestHandler):
  24     """Handles single HTTP request."""
  25     server: TaskServer
  26
  27     def do_GET(self):
  28         """Handle any GET request."""
  29         try:
  30             conn, site, params = self._init_handling()
  31             if 'calendar' == site:
  32                 html = self.do_GET_calendar(conn)
  33             elif 'day' == site:
  34                 date = params.get('date', ['2024-01-01'])[0]
  35                 html = self.do_GET_day(conn, date)
  36             else:
  37                 raise HandledException('Test!')
  38             conn.commit()
  39             conn.close()
  40             self._send_html(html)
  41         except HandledException as error:
  42             self._send_msg(error)
  43
  44     def do_GET_calendar(self, conn: DatabaseConnection):
  45         """Show Days."""
  46         return self.server.jinja.get_template('calendar.html').render(
  47                 days=Day.all(conn))
  48
  49     def do_GET_day(self, conn: DatabaseConnection, date: str):
  50         """Show single Day."""
  51         day = Day.by_date(conn, date, create=True)
  52         return self.server.jinja.get_template('day.html').render(day=day)
  53
  54     def do_POST(self):
  55         """Handle any POST request."""
  56         try:
  57             conn, site, params = self._init_handling()
  58             length = int(self.headers['content-length'])
  59             postvars = parse_qs(self.rfile.read(length).decode(),
  60                                 keep_blank_values=1)
  61             if 'day' == site:
  62                 date = params.get('date', [None])[0]
  63                 self.do_POST_day(conn, date, postvars)
  64             conn.commit()
  65             conn.close()
  66             self._redirect('/')
  67         except HandledException as error:
  68             self._send_msg(error)
  69
  70     def do_POST_day(self, conn: DatabaseConnection, date: str, postvars: dict):
  71         """Update or insert Day of date and fields defined in postvars."""
  72         comment = postvars['comment'][0]
  73         day = Day.by_date(conn, date, create=True)
  74         day.comment = comment
  75         day.save(conn)
  76
  77     def _init_handling(self):
  78         conn = DatabaseConnection(self.server.db)
  79         parsed_url = urlparse(self.path)
  80         site = path_split(parsed_url.path)[1]
  81         params = parse_qs(parsed_url.query)
  82         return conn, site, params
  83
  84     def _redirect(self, target: str):
  85         self.send_response(302)
  86         self.send_header('Location', target)
  87         self.end_headers()
  88
  89     def _send_html(self, html: str, code: int = 200):
  90         """Send HTML as proper HTTP response."""
  91         self.send_response(code)
  92         self.end_headers()
  93         self.wfile.write(bytes(html, 'utf-8'))
  94
  95     def _send_msg(self, msg: str, code: int = 400):
  96         """Send message in HTML formatting as HTTP response."""
  97         html = self.server.jinja.get_template('msg.html').render(msg=msg)
  98         self._send_html(html, code)