X-Git-Url: https://plomlompom.com/repos/berlin_corona.txt?a=blobdiff_plain;f=plomtask%2Fhttp.py;h=3dde6e200ed50d5b7dab65e7c648dceacee1ed82;hb=87398980c438de55ff17098790a59e123624493b;hp=8106d13c3c9f5c65b16dd1df12705543e183d46e;hpb=ab5a23f86261ef74b00fd77ff198275bac6b82fd;p=plomtask diff --git a/plomtask/http.py b/plomtask/http.py index 8106d13..3dde6e2 100644 --- a/plomtask/http.py +++ b/plomtask/http.py @@ -1,96 +1,176 @@ """Web server stuff.""" +from typing import Any from http.server import BaseHTTPRequestHandler from http.server import HTTPServer from urllib.parse import urlparse, parse_qs from os.path import split as path_split from jinja2 import Environment as JinjaEnv, FileSystemLoader as JinjaFSLoader -from plomtask.days import Day -from plomtask.misc import HandledException -from plomtask.db import DatabaseConnection +from plomtask.days import Day, todays_date +from plomtask.exceptions import HandledException, BadFormatException, \ + NotFoundException +from plomtask.db import DatabaseConnection, DatabaseFile +from plomtask.processes import Process + +TEMPLATES_DIR = 'templates' class TaskServer(HTTPServer): """Variant of HTTPServer that knows .jinja as Jinja Environment.""" - def __init__(self, templates_dir, db_file, *args, **kwargs): + def __init__(self, db_file: DatabaseFile, + *args: Any, **kwargs: Any) -> None: super().__init__(*args, **kwargs) self.db = db_file - self.jinja = JinjaEnv(loader=JinjaFSLoader(templates_dir)) + self.jinja = JinjaEnv(loader=JinjaFSLoader(TEMPLATES_DIR)) + + +class ParamsParser: + """Wrapper for validating and retrieving GET params.""" + + def __init__(self, params: dict[str, list[str]]) -> None: + self.params = params + + def get_str(self, key: str, default: str = '') -> str: + """Retrieve string value of key from self.params.""" + if key not in self.params: + return default + return self.params[key][0] + + def get_int_or_none(self, key: str) -> int | None: + """Retrieve int value of key from self.params, on empty return None.""" + if key not in self.params or not self.params[key]: + return None + val = self.params[key][0] + try: + return int(val) + except ValueError as e: + raise BadFormatException(f'Bad ?{key}= value: {val}') from e + + +class PostvarsParser: + """Postvars wrapper for validating and retrieving form data.""" + + def __init__(self, postvars: dict[str, list[str]]) -> None: + self.postvars = postvars + + def get_str(self, key: str) -> str: + """Retrieve string value of key from self.postvars.""" + if key not in self.postvars: + raise BadFormatException(f'missing value for form field: {key}') + return self.postvars[key][0] + + def get_float(self, key: str) -> float: + """Retrieve float value of key from self.postvars.""" + val = self.get_str(key) + try: + return float(val) + except ValueError as e: + msg = f'cannot float form field value: {val}' + raise BadFormatException(msg) from e class TaskHandler(BaseHTTPRequestHandler): """Handles single HTTP request.""" server: TaskServer - def do_GET(self): + def do_GET(self) -> None: """Handle any GET request.""" try: conn, site, params = self._init_handling() - if 'calendar' == site: - html = self.do_GET_calendar(conn) - elif 'day' == site: - date = params.get('date', ['2024-01-01'])[0] - html = self.do_GET_day(conn, date) + if site in {'calendar', 'day', 'process', 'processes'}: + html = getattr(self, f'do_GET_{site}')(conn, params) + elif '' == site: + self._redirect('/day') + return else: - raise HandledException('Test!') - conn.commit() + raise NotFoundException(f'Unknown page: /{site}') conn.close() self._send_html(html) except HandledException as error: - self._send_msg(error) + self._send_msg(error, code=error.http_code) - def do_GET_calendar(self, conn: DatabaseConnection): - """Show Days.""" + def do_GET_calendar(self, conn: DatabaseConnection, + params: ParamsParser) -> str: + """Show Days from ?start= to ?end=.""" + start = params.get_str('start') + end = params.get_str('end') + days = Day.all(conn, date_range=(start, end), fill_gaps=True) return self.server.jinja.get_template('calendar.html').render( - days=Day.all(conn)) + days=days, start=start, end=end) - def do_GET_day(self, conn: DatabaseConnection, date: str): - """Show single Day.""" - day = Day.by_date(conn, date) + def do_GET_day(self, conn: DatabaseConnection, + params: ParamsParser) -> str: + """Show single Day of ?date=.""" + date = params.get_str('date', todays_date()) + day = Day.by_date(conn, date, create=True) return self.server.jinja.get_template('day.html').render(day=day) - def do_POST(self): + def do_GET_process(self, conn: DatabaseConnection, + params: ParamsParser) -> str: + """Show process of ?id=.""" + id_ = params.get_int_or_none('id') + return self.server.jinja.get_template('process.html').render( + process=Process.by_id(conn, id_, create=True)) + + def do_GET_processes(self, conn: DatabaseConnection, + _: ParamsParser) -> str: + """Show all Processes.""" + return self.server.jinja.get_template('processes.html').render( + processes=Process.all(conn)) + + def do_POST(self) -> None: """Handle any POST request.""" try: conn, site, params = self._init_handling() length = int(self.headers['content-length']) postvars = parse_qs(self.rfile.read(length).decode(), - keep_blank_values=1) - if 'day' == site: - date = params.get('date', ['2024-01-01'])[0] - self.do_POST_day(conn, date, postvars) + keep_blank_values=True) + form_data = PostvarsParser(postvars) + if site in ('day', 'process'): + getattr(self, f'do_POST_{site}')(conn, params, form_data) conn.commit() conn.close() self._redirect('/') except HandledException as error: - self._send_msg(error) + self._send_msg(error, code=error.http_code) - def do_POST_day(self, conn: DatabaseConnection, date: str, postvars: dict): + def do_POST_day(self, conn: DatabaseConnection, params: ParamsParser, + form_data: PostvarsParser) -> None: """Update or insert Day of date and fields defined in postvars.""" - comment = postvars['comment'][0] + date = params.get_str('date') day = Day.by_date(conn, date, create=True) - day.comment = comment + day.comment = form_data.get_str('comment') day.save(conn) - def _init_handling(self): + def do_POST_process(self, conn: DatabaseConnection, params: ParamsParser, + form_data: PostvarsParser) -> None: + """Update or insert Process of ?id= and fields defined in postvars.""" + id_ = params.get_int_or_none('id') + process = Process.by_id(conn, id_, create=True) + process.title.set(form_data.get_str('title')) + process.description.set(form_data.get_str('description')) + process.effort.set(form_data.get_float('effort')) + process.save(conn) + + def _init_handling(self) -> tuple[DatabaseConnection, str, ParamsParser]: conn = DatabaseConnection(self.server.db) parsed_url = urlparse(self.path) site = path_split(parsed_url.path)[1] - params = parse_qs(parsed_url.query) + params = ParamsParser(parse_qs(parsed_url.query)) return conn, site, params - def _redirect(self, target: str): + def _redirect(self, target: str) -> None: self.send_response(302) self.send_header('Location', target) self.end_headers() - def _send_html(self, html: str, code: int = 200): + def _send_html(self, html: str, code: int = 200) -> None: """Send HTML as proper HTTP response.""" self.send_response(code) self.end_headers() self.wfile.write(bytes(html, 'utf-8')) - def _send_msg(self, msg: str, code: int = 400): + def _send_msg(self, msg: Exception, code: int = 400) -> None: """Send message in HTML formatting as HTTP response.""" html = self.server.jinja.get_template('msg.html').render(msg=msg) self._send_html(html, code)