plomlompom.com Git - misc/blob - todo.py

   1 from plomlib import PlomDB, run_server, PlomHandler, PlomException
   2 import json
   3 from uuid import uuid4
   4 from datetime import datetime, timedelta
   5 from urllib.parse import parse_qs
   6 from jinja2 import Template
   7 from urllib.parse import urlparse
   8 db_path = '/home/plom/org/todo_new.json'
   9 # db_path = '/home/plom/public_repos/misc/todo_new.json'
  10 server_port = 8082
  11 DATE_FORMAT = '%Y-%m-%d'
  12
  13 html_head = """
  14 <style>
  15 table.alternating tr:nth-child(even) {
  16     background-color: #f2f2f2;
  17 }
  18 table.alternating tr:nth-child(odd) {
  19     background-color: #ffffff;
  20 }
  21 th, td { border: 1px solid black; text-align: left; vertical_align: top; }
  22 td details { display: inline }
  23 td.input { width: 100%; }
  24 td.checkbox { width: 0.7em; }
  25 th.checkbox { width: 0.7em; }
  26 tr.week_row td { height: 0.1em; border: 0px; background-color: black; }
  27 tr.day_row td { background-color: #f2f2f2; }
  28 input[type="text"] { width: 100%; box-sizing: border-box; }
  29 </style>
  30 <body>
  31 tasks: <a href="{{db.prefix}}/tasks">list</a> <a href="{{db.prefix}}/add_task">add</a> | day:
  32 <a href="{{db.prefix}}/day{% if date %}?date={{date}}{% endif %}">choose tasks</a>
  33 <a href="{{db.prefix}}/day?{% if date %}date={{date}}&{% endif %}hide_unchosen=1">do tasks</a>
  34 | <a href="{{db.prefix}}/calendar?t_and=calendar">calendar</a>
  35 <hr />
  36 """
  37 form_footer = '\n</form>'
  38 form_header_tmpl = """
  39 <form action="{{action|e}}" method="POST">
  40 """
  41 calendar_tmpl = """
  42 <p>
  43 from: <input name="start" {% if start_date %}value="{{ start_date }}"{% endif %} placeholder="{{ today }}" />
  44 to: <input name="end" {% if end_date %}value="{{ end_date }}"{% endif %} placeholder="2030-12-31" />
  45 <input type="submit" value="OK" />
  46 </p>
  47 <table>
  48 {% for date, day in days.items() | sort() %}
  49 {% if day.weekday == "Monday" %}<tr class="week_row"><td colspan=3></td></tr>{% endif %}
  50 <tr class="day_row"><td colspan=3><a href="{{db.prefix}}/day?date={{date}}&hide_unchosen=1">{{ date }}</a> {{ day.weekday }} ({{ day.todos_sum|round(2) }}) {{ day.comment|e }}</td></tr>
  51 {% for task, todo in day.todos.items() | sort(attribute='1.title', reverse=True)  %}
  52 {% if todo.visible %}
  53 <tr><td class="checkbox">{% if todo.done %}✓{% else %}&nbsp;&nbsp;{% endif %}</td><td><a href="{{db.prefix}}/todo?task={{ todo.task.id_ }}&date={{ date }}">{{ todo.title }}</a></td><td>{{ todo.comment|e }}</td></tr>
  54 {% endif %}
  55 {% endfor %}
  56 {% endfor %}
  57 </table>
  58 """
  59 todo_tmpl = """
  60 <input type="hidden" name="task_uuid" value="{{ todo.task.id_ }}" />
  61 <input type="hidden" name="date" value="{{ todo.day.date }}" />
  62 <table>
  63 <tr><th>task</th><td><a href="{{db.prefix}}/task?id={{ todo.task.id_ }}">{{ todo.task.title|e }}</a></td></tr>
  64 <tr><th>default weight</th><td>{{ todo.default_weight }}</td></tr>
  65 <tr><th>day</th><td>{{ todo.day.date }}</td></tr>
  66 <tr><th>day weight</th><td class="input"><input type="number" name="day_weight" step=0.1 size=5 value="{{ todo.day_weight }}" /></td></tr>
  67 <tr><th>comment</th><td class="input"><input type="text" name="comment" value="{{todo.comment|e}}" /></td></tr>
  68 <tr><th>done</th><td class="input"><input type="checkbox" name="done" {% if todo.done %}checked{% endif %}/></td></tr>
  69 </table>
  70 <input type="submit" value="update" />
  71 """
  72 task_tmpl = """
  73 <input type="hidden" name="id" value="{{ task.id_ }}" />
  74 <table>
  75 <tr><th>title</th><td class="input"><input name="title" type="text" value="{{ task.title|e }}" /><details><summary>history</summary><ul>{% for k,v in task.title_history.items() | sort(attribute='0', reverse=True) %}<li>{{ k }}: {{ v|e }}{% endfor %}</ul></details></td></tr>
  76 <tr><th>default weight</th><td class="input"><input type="number" name="default_weight" value="{{ task.default_weight }}" step=0.1 size=5 required /><details><summary>history</summary><ul>{% for k,v in task.default_weight_history.items() | sort(attribute='0', reverse=True) %}<li>{{ k }}: {{ v|e }}{% endfor %}</ul></details></td></tr>
  77 <tr><th>tags</th><td class="input"><input name="tags" type="text" value="{{ task.tags_joined|e }}" ><details><summary>history</summary><ul>{% for k,v in task.tags_history.items() | sort(attribute='0', reverse=True) %}<li>{{ k }}: {{ v|e }}{% endfor %}</ul></details></td></tr>
  78 </table>
  79 <input type="submit" value="update" />
  80 """
  81 day_tmpl = """
  82 <p>
  83 <input name="hide_unchosen" type="checkbox" {% if db.hide_unchosen %}checked{% endif %} /> hide unchosen |
  84 <a href="{{db.prefix}}/day?date={{prev_date}}{% if db.hide_unchosen %}&hide_unchosen=1{% endif %}">prev</a> <a href="{{db.prefix}}/day?date={{next_date}}{% if db.hide_unchosen %}&hide_unchosen=1{% endif %}">next</a> |
  85 <input type="hidden" name="original_selected_date" value="{{ db.selected_date }}" />
  86 date: <input name="new_selected_date" value="{{ db.selected_date }}" size=8 /> |
  87 {{ db.selected_day.todos_sum|round(2) }} ({{ db.selected_day.todos_sum2|round(2)}}) |
  88 comment: <input name="day_comment" value="{{ db.selected_day.comment|e }}">
  89 </p>
  90
  91 <table class="alternating">
  92 <tr><th>task</th><th class="checkbox">choose?</th><th class="checkbox">done?</th><th>weight</th><th>comment</th></tr>
  93 {% for uuid, t in db.tasks.items() | sort(attribute='1.title') %}
  94 {% if t.visible %}
  95 <tr>
  96 <input name="t_uuid" value="{{ uuid }}" type="hidden" >
  97 <td><details><summary>] <a href="{{db.prefix}}/task?id={{ uuid }}" />{{ t.current_title|e }}</a></summary>tags: {% for tag in t.tags | sort %}<a href="{{db.prefix}}/day?date={{ db.selected_date }}&t_and={{tag|e}}">{{ tag }}</a> {% endfor %}</details></td>
  98 <td><input name="choose" type="checkbox" value="{{ uuid }}" {% if uuid in db.selected_day.todos.keys() %}checked{% endif %} ></td>
  99 <td class="checkbox"><input name="done" type="checkbox" value="{{ uuid }}" {% if uuid in db.selected_day.todos.keys() and db.selected_day.todos[uuid].done %}checked{% endif %} ></td>
 100 <td class="checkbox"><input name="day_weight" type="number" step=0.1 size=5 value="{% if uuid in db.selected_day.todos.keys() and db.selected_day.todos[uuid].day_weight %}{{ db.selected_day.todos[uuid].day_weight }}{% endif %}" placeholder={{ t.current_default_weight }} ></td>
 101 <td type="input"><input name="todo_comment" type="text" value="{% if uuid in db.selected_day.todos.keys() %}{{ db.selected_day.todos[uuid].comment|e }}{% endif %}" ></td>
 102 </tr>
 103 {% endif %}
 104 {% endfor %}
 105 </table>
 106 <input type="submit" value="OK">
 107 """
 108 tag_filters_tmpl = """
 109 <p style="float: left; margin-right: 1em;">
 110 <input type="submit" value="OK">
 111 </p>
 112 <p>
 113 mandatory tags:
 114 {% for and_filter in db.t_filter_and %}
 115 <select name="t_and">
 116 <option></option>
 117 {% for tag in db.t_tags | sort %}
 118 <option value="{{tag|e}}" {% if and_filter == tag %}selected{% endif %}>{{tag|e}}</option>
 119 {% endfor %}
 120 </select>
 121 {% endfor %}
 122 <select name="t_and">
 123 <option></option>
 124 {% for tag in db.t_tags | sort %}
 125 <option value="{{tag|e}}">{{tag|e}}</option>
 126 {% endfor %}
 127 </select>
 128 <br />
 129 forbidden tags:
 130 {% for not_filter in db.t_filter_not %}
 131 <select name="t_not">
 132 <option></option>
 133 {% for tag in db.t_tags | sort %}
 134 <option value="{{tag|e}}" {% if not_filter == tag %}selected{% endif %}>{{tag|e}}</option>
 135 {% endfor %}
 136 </select>
 137 {% endfor %}
 138 <select name="t_not">
 139 <option></option>
 140 {% for tag in db.t_tags | sort %}
 141 <option value="{{tag|e}}">{{tag|e}}</option>
 142 {% endfor %}
 143 </select>
 144 </p>
 145 """
 146 tasks_tmpl = """
 147 <table class="alternating">
 148 <tr><th>default<br />weight</th><th>task</th><th>tags</th></tr>
 149 {% for uuid, t in db.tasks.items() | sort(attribute='1.title') %}
 150 {% if t.visible %}
 151 <tr>
 152 <td>{{ t.default_weight }}</a></td>
 153 <td><a href="{{db.prefix}}/task?id={{ uuid }}" />{{ t.title|e }}</a></td>
 154 <td>{% for tag in t.tags | sort %}<a href="{{db.prefix}}/tags?t_and={{tag|e}}">{{ tag }}</a> {% endfor %}</td>
 155 {% endif %}
 156 {% endfor %}
 157 </table>
 158 """
 159
 160 class Task:
 161
 162     def __init__(self, db, title_history=None, tags_history=None, default_weight_history=None):
 163         self.db = db
 164         self.title_history = title_history if title_history else {}
 165         self.tags_history = tags_history if tags_history else {}
 166         self.default_weight_history = default_weight_history if default_weight_history else {}
 167         self.visible = True
 168
 169     def _set_with_history(self, history, value):
 170         keys = sorted(history.keys())
 171         if len(history) == 0 or value != history[keys[-1]]:
 172             history[str(datetime.now())[:19]] = value
 173
 174     def _last_of_history(self, history, default):
 175         keys = sorted(history.keys())
 176         return default if 0 == len(history) else history[keys[-1]]
 177
 178     @classmethod
 179     def from_dict(cls, db, d):
 180         return cls(
 181                 db,
 182                 d['title_history'],
 183                 {k: set(v) for k, v in d['tags_history'].items()},
 184                 d['default_weight_history'])
 185
 186     @property
 187     def default_weight(self):
 188         return self._last_of_history(self.default_weight_history, 1)
 189
 190     @default_weight.setter
 191     def default_weight(self, default_weight):
 192         self._set_with_history(self.default_weight_history, default_weight)
 193
 194     def default_weight_at(self, queried_date):
 195         ret = self.default_weight_history[sorted(self.default_weight_history.keys())[0]]
 196         for date_key, default_weight in self.default_weight_history.items():
 197             if date_key > f'{queried_date} 23:59:59':
 198                 break
 199             ret = default_weight
 200         return ret
 201
 202     @property
 203     def current_default_weight(self):
 204         return self.default_weight_at(self.db.selected_date)
 205
 206     @property
 207     def title(self):
 208         return self._last_of_history(self.title_history, '')
 209
 210     @title.setter
 211     def title(self, title):
 212         self._set_with_history(self.title_history, title)
 213
 214     def title_at(self, queried_date):
 215         ret = self.title_history[sorted(self.title_history.keys())[0]]
 216         for date_key, title in self.title_history.items():
 217             if date_key > f'{queried_date} 23:59:59':
 218                 break
 219             ret = title
 220         return ret
 221
 222     @property
 223     def current_title(self):
 224         return self.title_at(self.db.selected_date)
 225
 226     @property
 227     def tags(self):
 228         return self._last_of_history(self.tags_history, set())
 229
 230     @tags.setter
 231     def tags(self, tags):
 232         self._set_with_history(self.tags_history, set(tags))
 233
 234     @property
 235     def tags_joined(self):
 236         return ';'.join(sorted(list(self.tags)))
 237
 238     @tags_joined.setter
 239     def tags_joined(self, tags_string):
 240         tags = set()
 241         for tag in [tag.strip() for tag in tags_string.split(';') if tag.strip() != '']:
 242             tags.add(tag)
 243         self.tags = tags
 244
 245     def to_dict(self):
 246         return {
 247             'title_history': self.title_history,
 248             'tags_history': {k: list(v) for k,v in self.tags_history.items()},
 249             'default_weight_history': self.default_weight_history}
 250
 251     @property
 252     def id_(self):
 253         for k, v in self.db.tasks.items():
 254             if v == self:
 255                 return k
 256
 257
 258 class Day:
 259
 260     def __init__(self, db, todos=None, comment=''):
 261         self.db = db
 262         self.todos = todos if todos else {}
 263         self.comment = comment
 264         self.archived = True
 265
 266     @classmethod
 267     def from_dict(cls, db, d):
 268         todos = {}
 269         comment = d['comment'] if 'comment' in d.keys() else ''
 270         day = cls(db, todos, comment)
 271         for uuid, todo_dict in d['todos'].items():
 272             day.add_todo(uuid, todo_dict)
 273         return day
 274
 275     def to_dict(self):
 276         d = {'comment': self.comment, 'todos': {}}
 277         for task_uuid, todo in self.todos.items():
 278             d['todos'][task_uuid] = todo.to_dict()
 279         return d
 280
 281     def add_todo(self, id_, dict_source=None):
 282         self.todos[id_] = Todo.from_dict(self, dict_source) if dict_source else Todo(self)
 283         return self.todos[id_]
 284
 285     def _todos_sum(self, include_undone=False):
 286         s = 0
 287         for todo in [todo for todo in self.todos.values() if todo.done]:
 288             s += todo.weight
 289         if include_undone:
 290             for todo in [todo for todo in self.todos.values() if not todo.done]:
 291                 s += todo.day_weight if todo.day_weight else 0
 292         return s
 293
 294     @property
 295     def todos_sum(self):
 296         return self._todos_sum()
 297
 298     @property
 299     def todos_sum2(self):
 300         return self._todos_sum(True)
 301
 302     @property
 303     def date(self):
 304         for k, v in self.db.days.items():
 305             if v == self:
 306                 return k
 307
 308 class Todo:
 309
 310     def __init__(self, day, done=False, day_weight=None, comment=''):
 311         self.day = day
 312         self.done = done
 313         self.day_weight = day_weight
 314         self.comment = comment
 315
 316     @classmethod
 317     def from_dict(cls, day, d):
 318         return cls(day, d['done'], d['day_weight'], d['comment'])
 319
 320     def to_dict(self):
 321         return {'done': self.done, 'day_weight': self.day_weight, 'comment': self.comment}
 322
 323     @property
 324     def default_weight(self):
 325         return self.task.default_weight_at(self.day.date)
 326
 327     @property
 328     def weight(self):
 329         if self.day_weight:
 330             return self.day_weight
 331         else:
 332             return self.day_weight if self.day_weight else self.default_weight
 333
 334     @property
 335     def task(self):
 336         for k, v in self.day.todos.items():
 337             if v == self:
 338                 return self.day.db.tasks[k]
 339
 340     @property
 341     def title(self):
 342         return self.task.title_at(self.day.date)
 343
 344
 345 class TodoDB(PlomDB):
 346
 347     def __init__(self, prefix, selected_date=None, t_filter_and = None, t_filter_not = None, hide_unchosen=False):
 348         self.prefix = prefix
 349         self.selected_date = selected_date if selected_date else str(datetime.now())[:10]
 350         self.t_filter_and = t_filter_and if t_filter_and else []
 351         self.t_filter_not = t_filter_not if t_filter_not else []
 352         self.hide_unchosen = hide_unchosen
 353         self.days = {}
 354         self.tasks = {}
 355         self.t_tags = set()
 356         super().__init__(db_path)
 357
 358     def read_db_file(self, f):
 359         d = json.load(f)
 360         for date, day_dict in d['days'].items():
 361             self.days[date] = self.add_day(dict_source=day_dict)
 362         for uuid, t_dict in d['tasks'].items():
 363             t = self.add_task(id_=uuid, dict_source=t_dict)
 364             t.visible = len([tag for tag in self.t_filter_and if not tag in t.tags]) == 0\
 365                     and len([tag for tag in self.t_filter_not if tag in t.tags]) == 0\
 366                     and ((not self.hide_unchosen) or uuid in self.selected_day.todos)
 367             for tag in t.tags:
 368                 self.t_tags.add(tag)
 369
 370     def to_dict(self):
 371         d = {
 372                 't_filter_and': self.t_filter_and,
 373                 't_filter_not': self.t_filter_not,
 374                 'tasks': {},
 375                 'days': {}
 376         }
 377         for uuid, t in self.tasks.items():
 378              d['tasks'][uuid] = t.to_dict()
 379         for date, day in self.days.items():
 380             d['days'][date] = day.to_dict()
 381         return d
 382
 383     @property
 384     def selected_day(self):
 385         if not self.selected_date in self.days.keys():
 386             self.days[self.selected_date] = self.add_day()
 387         return self.days[self.selected_date]
 388
 389     def change_selected_days_date(self, new_date):
 390         if new_date in self.days.keys():
 391             raise PlomException('cannot use same date twice')
 392         else:
 393             self.days[new_date] = self.selected_day
 394             del self.days[self.selected_date]
 395             self.selected_date = new_date
 396
 397     def write(self):
 398         dates_to_purge = []
 399         for date, day in self.days.items():
 400             if len(day.todos) == 0 and len(day.comment) == 0:
 401                 dates_to_purge += [date]
 402         for date in dates_to_purge:
 403             del self.days[date]
 404         self.write_text_to_db(json.dumps(self.to_dict()))
 405
 406     def add_task(self, id_=None, dict_source=None, return_id=False):
 407         t = Task.from_dict(self, dict_source) if dict_source else Task(self)
 408         id_ = id_ if id_ else str(uuid4())
 409         self.tasks[id_] = t
 410         if return_id:
 411             return id_, t
 412         else:
 413             return t
 414
 415     def add_day(self, dict_source=None):
 416         return Day.from_dict(self, dict_source) if dict_source else Day(self)
 417
 418     def show_day(self):
 419         current_date = datetime.strptime(self.selected_date, DATE_FORMAT)
 420         prev_date = current_date - timedelta(days=1)
 421         prev_date_str = prev_date.strftime(DATE_FORMAT)
 422         next_date = current_date + timedelta(days=1)
 423         next_date_str = next_date.strftime(DATE_FORMAT)
 424         return Template(form_header_tmpl + tag_filters_tmpl + day_tmpl + form_footer).render(db=self, action=self.prefix+'/day', prev_date=prev_date_str, next_date=next_date_str)
 425
 426     def show_calendar(self, start_date_str, end_date_str):
 427         days_to_show = {}
 428         target_start = start_date_str if start_date_str else sorted(self.days.keys())[0]
 429         # target_start = str(datetime.now())[:10] if 'today' == target_start else target_start
 430         target_end = end_date_str if end_date_str else sorted(self.days.keys())[-1]
 431         # todays_date = str(datetime.now())[:10]
 432         start_date = datetime.strptime(target_start, DATE_FORMAT)
 433         end_date = datetime.strptime(target_end, DATE_FORMAT)
 434         for n in range(int((end_date - start_date).days) + 1):
 435             current_date_obj = start_date + timedelta(n)
 436             current_date = current_date_obj.strftime(DATE_FORMAT)
 437             if current_date not in self.days.keys():
 438                 days_to_show[current_date] = self.add_day()
 439             else:
 440                 days_to_show[current_date] = self.days[current_date]
 441             days_to_show[current_date].weekday = datetime.strptime(current_date, DATE_FORMAT).strftime('%A')
 442             for task_uuid, todo in days_to_show[current_date].todos.items():
 443                 todo.visible = self.tasks[task_uuid].visible
 444         return Template(form_header_tmpl + calendar_tmpl + form_footer).render(db=self, days=days_to_show, action=self.prefix+'/calendar', today=str(datetime.now())[:10], start_date=start_date_str, end_date=end_date_str)
 445
 446     def show_todo(self, task_uuid, selected_date):
 447         todo = self.days[selected_date].todos[task_uuid]
 448         return Template(form_header_tmpl + todo_tmpl + form_footer).render(db=self, todo=todo, action=self.prefix+'/todo')
 449
 450     def update_todo(self, task_uuid, date, day_weight, done, comment):
 451         if task_uuid in self.days[date].todos.keys():
 452             todo = self.days[date].todos[task_uuid]
 453         else:
 454             todo = self.days[date].add_todo(task_uuid)
 455         todo.day_weight = float(day_weight) if len(day_weight) > 0 else None
 456         todo.done = done
 457         todo.comment = comment
 458
 459     def show_task(self, id_):
 460         task = self.tasks[id_] if id_ else self.add_task()
 461         return Template(form_header_tmpl + task_tmpl + form_footer).render(db=self, task=task, action=self.prefix+'/task')
 462
 463     def update_task(self, id_, title, default_weight, tags_joined):
 464         task = self.tasks[id_] if id_ in self.tasks.keys() else self.add_task(id_)
 465         task.title = title
 466         task.default_weight = float(default_weight) if len(default_weight) > 0 else None
 467         task.tags_joined = tags_joined
 468
 469     def show_tasks(self):
 470         return Template(form_header_tmpl + tag_filters_tmpl + tasks_tmpl + form_footer).render(db=self, action=self.prefix+'/tasks')
 471
 472
 473
 474 class TodoHandler(PlomHandler):
 475
 476     def app_init(self, handler):
 477         default_path = '/todo'
 478         handler.add_route('GET', default_path, self.show_db)
 479         handler.add_route('POST', default_path, self.write_db)
 480         return 'todo', default_path
 481
 482     def do_POST(self):
 483         self.try_do(self.write_db)
 484
 485     def write_db(self):
 486         from urllib.parse import urlencode
 487         prefix = self.apps['todo'] if hasattr(self, 'apps') else ''
 488         length = int(self.headers['content-length'])
 489         postvars = parse_qs(self.rfile.read(length).decode(), keep_blank_values=1)
 490         parsed_url = urlparse(self.path)
 491         db = TodoDB(prefix=prefix)
 492
 493         if parsed_url.path == prefix + '/calendar':
 494             start = postvars['start'][0] if len(postvars['start'][0]) > 0 else ''
 495             end = postvars['end'][0] if len(postvars['end'][0]) > 0 else ''
 496             homepage = f'{prefix}/calendar?t_and=calendar&start={start}&end={end}'
 497
 498         elif parsed_url.path == prefix + '/todo':
 499             task_uuid = postvars['task_uuid'][0]
 500             date = postvars['date'][0]
 501             db.update_todo(task_uuid, date, postvars['day_weight'][0], 'done' in postvars.keys(), postvars['comment'][0])
 502             homepage = f'{prefix}/todo?task={task_uuid}&date={date}'
 503
 504         elif parsed_url.path == prefix + '/task':
 505             id_ = postvars['id'][0]
 506             db.update_task(id_, postvars['title'][0], postvars['default_weight'][0], postvars['tags'][0])
 507             homepage = f'{prefix}/task?id={id_}'
 508
 509         elif parsed_url.path in {prefix + '/tasks', prefix + '/day'}:
 510             for target in postvars['t_and']:
 511                 if not target in db.t_filter_and:
 512                     db.t_filter_and += [target]
 513             for target in postvars['t_not']:
 514                 if not target in db.t_filter_not:
 515                     db.t_filter_not += [target]
 516             if 'hide_unchosen' in postvars.keys():
 517                 db.hide_unchosen = True
 518             data = [('t_and', f) for f in db.t_filter_and] + [('t_not', f) for f in db.t_filter_not] + [('hide_unchosen', int(db.hide_unchosen))]
 519
 520             if parsed_url.path == prefix + '/tasks':
 521                 encoded_params = urlencode(data)
 522                 homepage = f'{prefix}/tasks?{encoded_params}'
 523
 524             elif parsed_url.path == prefix + '/day':
 525                 db.selected_date = postvars['original_selected_date'][0]
 526                 new_selected_date = postvars['new_selected_date'][0]
 527                 try:
 528                     datetime.strptime(new_selected_date, DATE_FORMAT)
 529                 except ValueError:
 530                     raise PlomException(f"{prefix} bad date string: {new_selected_date}")
 531                 if new_selected_date != db.selected_date:
 532                     db.change_selected_days_date(new_selected_date)
 533                 if 't_uuid' in postvars.keys():
 534                     for i, uuid in enumerate(postvars['t_uuid']):
 535                         t = db.tasks[uuid]
 536                         if uuid in db.selected_day.todos.keys() and ((not 'choose' in postvars) or uuid not in postvars['choose']):
 537                             del db.selected_day.todos[uuid]
 538                     if 'choose' in postvars.keys():
 539                         for i, uuid in enumerate(postvars['t_uuid']):
 540                             if uuid in postvars['choose']:
 541                                 done = 'done' in postvars and uuid in postvars['done']
 542                                 db.update_todo(uuid, db.selected_date, postvars['day_weight'][i], done, postvars['todo_comment'][i])
 543                 if 'day_comment' in postvars.keys():
 544                     db.selected_day.comment = postvars['day_comment'][0]
 545                 data += [('date', db.selected_date)]
 546                 encoded_params = urlencode(data)
 547                 homepage = f'{prefix}/day?{encoded_params}'
 548
 549         db.write()
 550         self.redirect(homepage)
 551
 552     def do_GET(self):
 553         self.try_do(self.show_db)
 554
 555     def show_db(self):
 556         prefix = self.apps['todo'] if hasattr(self, 'apps') else ''
 557         parsed_url = urlparse(self.path)
 558         params = parse_qs(parsed_url.query)
 559         selected_date = params.get('date', [None])[0]
 560         t_filter_and = params.get('t_and', [])
 561         t_filter_not = params.get('t_not', ['deleted'])
 562         hide_unchosen_params = params.get('hide_unchosen', [])
 563         hide_unchosen = len(hide_unchosen_params) > 0 and hide_unchosen_params[0] != '0'
 564         db = TodoDB(prefix, selected_date, t_filter_and, t_filter_not, hide_unchosen)
 565         if parsed_url.path == prefix + '/day':
 566             page = db.show_day()
 567         elif parsed_url.path == prefix + '/todo':
 568             task_uuid = params.get('task', [None])[0]
 569             page = db.show_todo(task_uuid, selected_date)
 570         elif parsed_url.path == prefix + '/task':
 571             id_ = params.get('id', [None])[0]
 572             page = db.show_task(id_)
 573         elif parsed_url.path == prefix + '/tasks':
 574             page = db.show_tasks()
 575         elif parsed_url.path == prefix + '/add_task':
 576             page = db.show_task(None)
 577         else:
 578             start_date = params.get('start', [None])[0]
 579             end_date = params.get('end', [None])[0]
 580             page = db.show_calendar(start_date, end_date)
 581         header = Template(html_head).render(db=db, prefix=prefix, date=selected_date)
 582         self.send_HTML(header + page)
 583
 584
 585 if __name__ == "__main__":
 586     run_server(server_port, TodoHandler)