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

   1 """Web server stuff."""
   2 from __future__ import annotations
   3 from dataclasses import dataclass
   4 from typing import Any, Callable
   5 from base64 import b64encode, b64decode
   6 from http.server import BaseHTTPRequestHandler
   7 from http.server import HTTPServer
   8 from urllib.parse import urlparse, parse_qs
   9 from os.path import split as path_split
  10 from jinja2 import Environment as JinjaEnv, FileSystemLoader as JinjaFSLoader
  11 from plomtask.dating import date_in_n_days
  12 from plomtask.days import Day
  13 from plomtask.exceptions import HandledException, BadFormatException, \
  14         NotFoundException
  15 from plomtask.db import DatabaseConnection, DatabaseFile
  16 from plomtask.processes import Process, ProcessStep, ProcessStepsNode
  17 from plomtask.conditions import Condition
  18 from plomtask.todos import Todo
  19
  20 TEMPLATES_DIR = 'templates'
  21
  22
  23 @dataclass
  24 class TodoStepsNode:
  25     """Collect what's useful for Todo steps tree display."""
  26     id_: int
  27     todo: Todo | None
  28     process: Process | None
  29     children: list[TodoStepsNode]
  30     fillable: bool = False
  31
  32
  33 class TaskServer(HTTPServer):
  34     """Variant of HTTPServer that knows .jinja as Jinja Environment."""
  35
  36     def __init__(self, db_file: DatabaseFile,
  37                  *args: Any, **kwargs: Any) -> None:
  38         super().__init__(*args, **kwargs)
  39         self.db = db_file
  40         self.jinja = JinjaEnv(loader=JinjaFSLoader(TEMPLATES_DIR))
  41
  42
  43 class InputsParser:
  44     """Wrapper for validating and retrieving dict-like HTTP inputs."""
  45
  46     def __init__(self, dict_: dict[str, list[str]],
  47                  strictness: bool = True) -> None:
  48         self.inputs = dict_
  49         self.strict = strictness
  50
  51     def get_str(self, key: str, default: str = '',
  52                 ignore_strict: bool = False) -> str:
  53         """Retrieve single/first string value of key, or default."""
  54         if key not in self.inputs.keys() or 0 == len(self.inputs[key]):
  55             if self.strict and not ignore_strict:
  56                 raise BadFormatException(f'no value found for key {key}')
  57             return default
  58         return self.inputs[key][0]
  59
  60     def get_first_strings_starting(self, prefix: str) -> dict[str, str]:
  61         """Retrieve dict of (first) strings at key starting with prefix."""
  62         ret = {}
  63         for key in [k for k in self.inputs.keys() if k.startswith(prefix)]:
  64             ret[key] = self.inputs[key][0]
  65         return ret
  66
  67     def get_int(self, key: str) -> int:
  68         """Retrieve single/first value of key as int, error if empty."""
  69         val = self.get_int_or_none(key)
  70         if val is None:
  71             raise BadFormatException(f'unexpected empty value for: {key}')
  72         return val
  73
  74     def get_int_or_none(self, key: str) -> int | None:
  75         """Retrieve single/first value of key as int, return None if empty."""
  76         val = self.get_str(key, ignore_strict=True)
  77         if val == '':
  78             return None
  79         try:
  80             return int(val)
  81         except ValueError as e:
  82             msg = f'cannot int form field value for key {key}: {val}'
  83             raise BadFormatException(msg) from e
  84
  85     def get_float(self, key: str) -> float:
  86         """Retrieve float value of key from self.postvars."""
  87         val = self.get_str(key)
  88         try:
  89             return float(val)
  90         except ValueError as e:
  91             msg = f'cannot float form field value for key {key}: {val}'
  92             raise BadFormatException(msg) from e
  93
  94     def get_all_str(self, key: str) -> list[str]:
  95         """Retrieve list of string values at key."""
  96         if key not in self.inputs.keys():
  97             return []
  98         return self.inputs[key]
  99
 100     def get_all_int(self, key: str) -> list[int]:
 101         """Retrieve list of int values at key."""
 102         all_str = self.get_all_str(key)
 103         try:
 104             return [int(s) for s in all_str if len(s) > 0]
 105         except ValueError as e:
 106             msg = f'cannot int a form field value for key {key} in: {all_str}'
 107             raise BadFormatException(msg) from e
 108
 109
 110 class TaskHandler(BaseHTTPRequestHandler):
 111     """Handles single HTTP request."""
 112     # pylint: disable=too-many-public-methods
 113     server: TaskServer
 114     conn: DatabaseConnection
 115     site: str
 116     form_data: InputsParser
 117     params: InputsParser
 118
 119     def send_html(self, html: str, code: int = 200) -> None:
 120         """Send HTML as proper HTTP response."""
 121         self.send_response(code)
 122         self.end_headers()
 123         self.wfile.write(bytes(html, 'utf-8'))
 124
 125     @staticmethod
 126     def _request_wrapper(http_method: str, not_found_msg: str
 127                          ) -> Callable[..., Callable[[TaskHandler], None]]:
 128         def decorator(f: Callable[..., str | None]
 129                       ) -> Callable[[TaskHandler], None]:
 130             def wrapper(self: TaskHandler) -> None:
 131                 try:
 132                     self.conn = DatabaseConnection(self.server.db)
 133                     parsed_url = urlparse(self.path)
 134                     self.site = path_split(parsed_url.path)[1]
 135                     params = parse_qs(parsed_url.query, strict_parsing=True)
 136                     self.params = InputsParser(params, False)
 137                     handler_name = f'do_{http_method}_{self.site}'
 138                     if hasattr(self, handler_name):
 139                         handler = getattr(self, handler_name)
 140                         redir_target = f(self, handler)
 141                         if redir_target:
 142                             self.send_response(302)
 143                             self.send_header('Location', redir_target)
 144                             self.end_headers()
 145                     else:
 146                         msg = f'{not_found_msg}: {self.site}'
 147                         raise NotFoundException(msg)
 148                 except HandledException as error:
 149                     html = self.server.jinja.\
 150                             get_template('msg.html').render(msg=error)
 151                     self.send_html(html, error.http_code)
 152                 finally:
 153                     self.conn.close()
 154             return wrapper
 155         return decorator
 156
 157     @_request_wrapper('GET', 'Unknown page')
 158     def do_GET(self, handler: Callable[[], str | dict[str, object]]
 159                ) -> str | None:
 160         """Render page with result of handler, or redirect if result is str."""
 161         template = f'{self.site}.html'
 162         ctx_or_redir = handler()
 163         if str == type(ctx_or_redir):
 164             return ctx_or_redir
 165         assert isinstance(ctx_or_redir, dict)
 166         html = self.server.jinja.get_template(template).render(**ctx_or_redir)
 167         self.send_html(html)
 168         return None
 169
 170     @_request_wrapper('POST', 'Unknown POST target')
 171     def do_POST(self, handler: Callable[[], str]) -> str:
 172         """Handle POST with handler, prepare redirection to result."""
 173         length = int(self.headers['content-length'])
 174         postvars = parse_qs(self.rfile.read(length).decode(),
 175                             keep_blank_values=True, strict_parsing=True)
 176         self.form_data = InputsParser(postvars)
 177         redir_target = handler()
 178         self.conn.commit()
 179         return redir_target
 180
 181     def _do_GET_calendar(self) -> dict[str, object]:
 182         """Show Days from ?start= to ?end=."""
 183         start = self.params.get_str('start')
 184         end = self.params.get_str('end')
 185         if not end:
 186             end = date_in_n_days(366)
 187         ret = Day.by_date_range_with_limits(self.conn, (start, end), 'id')
 188         days, start, end = ret
 189         days = Day.with_filled_gaps(days, start, end)
 190         for day in days:
 191             day.collect_calendarized_todos(self.conn)
 192         today = date_in_n_days(0)
 193         return {'start': start, 'end': end, 'days': days, 'today': today}
 194
 195     def do_GET_(self) -> str:
 196         """Return redirect target on GET /."""
 197         return '/day'
 198
 199     def do_GET_calendar(self) -> dict[str, object]:
 200         """Show Days from ?start= to ?end= – normal view."""
 201         return self._do_GET_calendar()
 202
 203     def do_GET_calendar_txt(self) -> dict[str, object]:
 204         """Show Days from ?start= to ?end= – minimalist view."""
 205         return self._do_GET_calendar()
 206
 207     def do_GET_day(self) -> dict[str, object]:
 208         """Show single Day of ?date=."""
 209         date = self.params.get_str('date', date_in_n_days(0))
 210         make_type = self.params.get_str('make_type')
 211         todays_todos = Todo.by_date(self.conn, date)
 212         total_effort = 0.0
 213         for todo in todays_todos:
 214             total_effort += todo.performed_effort
 215         conditions_present = []
 216         enablers_for = {}
 217         disablers_for = {}
 218         for todo in todays_todos:
 219             for condition in todo.conditions + todo.blockers:
 220                 if condition not in conditions_present:
 221                     conditions_present += [condition]
 222                     enablers_for[condition.id_] = [p for p in
 223                                                    Process.all(self.conn)
 224                                                    if condition in p.enables]
 225                     disablers_for[condition.id_] = [p for p in
 226                                                     Process.all(self.conn)
 227                                                     if condition in p.disables]
 228         seen_todos: set[int] = set()
 229         top_nodes = [t.get_step_tree(seen_todos)
 230                      for t in todays_todos if not t.parents]
 231         return {'day': Day.by_id(self.conn, date, create=True),
 232                 'total_effort': total_effort,
 233                 'top_nodes': top_nodes,
 234                 'make_type': make_type,
 235                 'enablers_for': enablers_for,
 236                 'disablers_for': disablers_for,
 237                 'conditions_present': conditions_present,
 238                 'processes': Process.all(self.conn)}
 239
 240     def do_GET_todo(self) -> dict[str, object]:
 241         """Show single Todo of ?id=."""
 242
 243         def walk_process_steps(id_: int,
 244                                process_step_nodes: list[ProcessStepsNode],
 245                                steps_nodes: list[TodoStepsNode]) -> None:
 246             for process_step_node in process_step_nodes:
 247                 id_ += 1
 248                 node = TodoStepsNode(id_, None, process_step_node.process, [])
 249                 steps_nodes += [node]
 250                 walk_process_steps(id_, list(process_step_node.steps.values()),
 251                                    node.children)
 252
 253         def walk_todo_steps(id_: int, todos: list[Todo],
 254                             steps_nodes: list[TodoStepsNode]) -> None:
 255             for todo in todos:
 256                 matched = False
 257                 for match in [item for item in steps_nodes
 258                               if item.process
 259                               and item.process == todo.process]:
 260                     match.todo = todo
 261                     matched = True
 262                     for child in match.children:
 263                         child.fillable = True
 264                     walk_todo_steps(id_, todo.children, match.children)
 265                 if not matched:
 266                     id_ += 1
 267                     node = TodoStepsNode(id_, todo, None, [])
 268                     steps_nodes += [node]
 269                     walk_todo_steps(id_, todo.children, node.children)
 270
 271         def collect_adoptables_keys(steps_nodes: list[TodoStepsNode]
 272                                     ) -> set[int]:
 273             ids = set()
 274             for node in steps_nodes:
 275                 if not node.todo:
 276                     assert isinstance(node.process, Process)
 277                     assert isinstance(node.process.id_, int)
 278                     ids.add(node.process.id_)
 279                 ids = ids | collect_adoptables_keys(node.children)
 280             return ids
 281
 282         id_ = self.params.get_int('id')
 283         todo = Todo.by_id(self.conn, id_)
 284         todo_steps = [step.todo for step in todo.get_step_tree(set()).children]
 285         process_tree = todo.process.get_steps(self.conn, None)
 286         steps_todo_to_process: list[TodoStepsNode] = []
 287         walk_process_steps(0, list(process_tree.values()),
 288                            steps_todo_to_process)
 289         for steps_node in steps_todo_to_process:
 290             steps_node.fillable = True
 291         walk_todo_steps(len(steps_todo_to_process), todo_steps,
 292                         steps_todo_to_process)
 293         adoptables: dict[int, list[Todo]] = {}
 294         any_adoptables = [Todo.by_id(self.conn, t.id_)
 295                           for t in Todo.by_date(self.conn, todo.date)
 296                           if t != todo]
 297         for id_ in collect_adoptables_keys(steps_todo_to_process):
 298             adoptables[id_] = [t for t in any_adoptables
 299                                if t.process.id_ == id_]
 300         return {'todo': todo, 'steps_todo_to_process': steps_todo_to_process,
 301                 'adoption_candidates_for': adoptables,
 302                 'process_candidates': Process.all(self.conn),
 303                 'todo_candidates': any_adoptables,
 304                 'condition_candidates': Condition.all(self.conn)}
 305
 306     def do_GET_todos(self) -> dict[str, object]:
 307         """Show Todos from ?start= to ?end=, of ?process=, ?comment= pattern"""
 308         sort_by = self.params.get_str('sort_by')
 309         start = self.params.get_str('start')
 310         end = self.params.get_str('end')
 311         process_id = self.params.get_int_or_none('process_id')
 312         comment_pattern = self.params.get_str('comment_pattern')
 313         todos = []
 314         ret = Todo.by_date_range_with_limits(self.conn, (start, end))
 315         todos_by_date_range, start, end = ret
 316         todos = [t for t in todos_by_date_range
 317                  if comment_pattern in t.comment
 318                  and ((not process_id) or t.process.id_ == process_id)]
 319         if sort_by == 'doneness':
 320             todos.sort(key=lambda t: t.is_done)
 321         elif sort_by == '-doneness':
 322             todos.sort(key=lambda t: t.is_done, reverse=True)
 323         elif sort_by == 'title':
 324             todos.sort(key=lambda t: t.title_then)
 325         elif sort_by == '-title':
 326             todos.sort(key=lambda t: t.title_then, reverse=True)
 327         elif sort_by == 'comment':
 328             todos.sort(key=lambda t: t.comment)
 329         elif sort_by == '-comment':
 330             todos.sort(key=lambda t: t.comment, reverse=True)
 331         elif sort_by == '-date':
 332             todos.sort(key=lambda t: t.date, reverse=True)
 333         else:
 334             todos.sort(key=lambda t: t.date)
 335         return {'start': start, 'end': end, 'process_id': process_id,
 336                 'comment_pattern': comment_pattern, 'todos': todos,
 337                 'all_processes': Process.all(self.conn), 'sort_by': sort_by}
 338
 339     def do_GET_conditions(self) -> dict[str, object]:
 340         """Show all Conditions."""
 341         pattern = self.params.get_str('pattern')
 342         conditions = Condition.matching(self.conn, pattern)
 343         sort_by = self.params.get_str('sort_by')
 344         if sort_by == 'is_active':
 345             conditions.sort(key=lambda c: c.is_active)
 346         elif sort_by == '-is_active':
 347             conditions.sort(key=lambda c: c.is_active, reverse=True)
 348         elif sort_by == '-title':
 349             conditions.sort(key=lambda c: c.title.newest, reverse=True)
 350         else:
 351             conditions.sort(key=lambda c: c.title.newest)
 352         return {'conditions': conditions,
 353                 'sort_by': sort_by,
 354                 'pattern': pattern}
 355
 356     def do_GET_condition(self) -> dict[str, object]:
 357         """Show Condition of ?id=."""
 358         id_ = self.params.get_int_or_none('id')
 359         c = Condition.by_id(self.conn, id_, create=True)
 360         ps = Process.all(self.conn)
 361         return {'condition': c, 'is_new': c.id_ is None,
 362                 'enabled_processes': [p for p in ps if c in p.conditions],
 363                 'disabled_processes': [p for p in ps if c in p.blockers],
 364                 'enabling_processes': [p for p in ps if c in p.enables],
 365                 'disabling_processes': [p for p in ps if c in p.disables]}
 366
 367     def do_GET_condition_titles(self) -> dict[str, object]:
 368         """Show title history of Condition of ?id=."""
 369         id_ = self.params.get_int_or_none('id')
 370         condition = Condition.by_id(self.conn, id_)
 371         return {'condition': condition}
 372
 373     def do_GET_condition_descriptions(self) -> dict[str, object]:
 374         """Show description historys of Condition of ?id=."""
 375         id_ = self.params.get_int_or_none('id')
 376         condition = Condition.by_id(self.conn, id_)
 377         return {'condition': condition}
 378
 379     def do_GET_process(self) -> dict[str, object]:
 380         """Show Process of ?id=."""
 381         id_ = self.params.get_int_or_none('id')
 382         process = Process.by_id(self.conn, id_, create=True)
 383         title_64 = self.params.get_str('title_b64')
 384         if title_64:
 385             title = b64decode(title_64.encode()).decode()
 386             process.title.set(title)
 387         owners = process.used_as_step_by(self.conn)
 388         for step_id in self.params.get_all_int('step_to'):
 389             owners += [Process.by_id(self.conn, step_id)]
 390         preset_top_step = None
 391         for process_id in self.params.get_all_int('has_step'):
 392             preset_top_step = process_id
 393         return {'process': process, 'is_new': process.id_ is None,
 394                 'preset_top_step': preset_top_step,
 395                 'steps': process.get_steps(self.conn), 'owners': owners,
 396                 'n_todos': len(Todo.by_process_id(self.conn, process.id_)),
 397                 'process_candidates': Process.all(self.conn),
 398                 'condition_candidates': Condition.all(self.conn)}
 399
 400     def do_GET_process_titles(self) -> dict[str, object]:
 401         """Show title history of Process of ?id=."""
 402         id_ = self.params.get_int_or_none('id')
 403         process = Process.by_id(self.conn, id_)
 404         return {'process': process}
 405
 406     def do_GET_process_descriptions(self) -> dict[str, object]:
 407         """Show description historys of Process of ?id=."""
 408         id_ = self.params.get_int_or_none('id')
 409         process = Process.by_id(self.conn, id_)
 410         return {'process': process}
 411
 412     def do_GET_process_efforts(self) -> dict[str, object]:
 413         """Show default effort history of Process of ?id=."""
 414         id_ = self.params.get_int_or_none('id')
 415         process = Process.by_id(self.conn, id_)
 416         return {'process': process}
 417
 418     def do_GET_processes(self) -> dict[str, object]:
 419         """Show all Processes."""
 420         pattern = self.params.get_str('pattern')
 421         processes = Process.matching(self.conn, pattern)
 422         sort_by = self.params.get_str('sort_by')
 423         if sort_by == 'steps':
 424             processes.sort(key=lambda p: len(p.explicit_steps))
 425         elif sort_by == '-steps':
 426             processes.sort(key=lambda p: len(p.explicit_steps), reverse=True)
 427         elif sort_by == 'owners':
 428             processes.sort(key=lambda p: p.n_owners or 0)
 429         elif sort_by == '-owners':
 430             processes.sort(key=lambda p: p.n_owners or 0, reverse=True)
 431         elif sort_by == 'effort':
 432             processes.sort(key=lambda p: p.effort.newest)
 433         elif sort_by == '-effort':
 434             processes.sort(key=lambda p: p.effort.newest, reverse=True)
 435         elif sort_by == '-title':
 436             processes.sort(key=lambda p: p.title.newest, reverse=True)
 437         else:
 438             processes.sort(key=lambda p: p.title.newest)
 439         return {'processes': processes, 'sort_by': sort_by, 'pattern': pattern}
 440
 441     def do_POST_day(self) -> str:
 442         """Update or insert Day of date and Todos mapped to it."""
 443         date = self.params.get_str('date')
 444         day = Day.by_id(self.conn, date, create=True)
 445         day.comment = self.form_data.get_str('day_comment')
 446         day.save(self.conn)
 447         make_type = self.form_data.get_str('make_type')
 448         for process_id in sorted(self.form_data.get_all_int('new_todo')):
 449             if 'empty' == make_type:
 450                 process = Process.by_id(self.conn, process_id)
 451                 todo = Todo(None, process, False, date)
 452                 todo.save(self.conn)
 453             else:
 454                 Todo.create_with_children(self.conn, process_id, date)
 455         done_ids = self.form_data.get_all_int('done')
 456         comments = self.form_data.get_all_str('comment')
 457         efforts = self.form_data.get_all_str('effort')
 458         for i, todo_id in enumerate(self.form_data.get_all_int('todo_id')):
 459             todo = Todo.by_id(self.conn, todo_id)
 460             todo.is_done = todo_id in done_ids
 461             if len(comments) > 0:
 462                 todo.comment = comments[i]
 463             if len(efforts) > 0:
 464                 todo.effort = float(efforts[i]) if efforts[i] else None
 465             todo.save(self.conn)
 466             for condition in todo.enables:
 467                 condition.save(self.conn)
 468             for condition in todo.disables:
 469                 condition.save(self.conn)
 470         return f'/day?date={date}&make_type={make_type}'
 471
 472     def do_POST_todo(self) -> str:
 473         """Update Todo and its children."""
 474         # pylint: disable=too-many-locals
 475         # pylint: disable=too-many-branches
 476         id_ = self.params.get_int('id')
 477         for _ in self.form_data.get_all_str('delete'):
 478             todo = Todo .by_id(self.conn, id_)
 479             todo.remove(self.conn)
 480             return '/'
 481         todo = Todo.by_id(self.conn, id_)
 482         adopted_child_ids = self.form_data.get_all_int('adopt')
 483         processes_to_make_full = self.form_data.get_all_int('make_full')
 484         processes_to_make_empty = self.form_data.get_all_int('make_empty')
 485         fill_fors = self.form_data.get_first_strings_starting('fill_for_')
 486         for v in fill_fors.values():
 487             if v.startswith('make_empty_'):
 488                 processes_to_make_empty += [int(v[11:])]
 489             elif v.startswith('make_full_'):
 490                 processes_to_make_full += [int(v[10:])]
 491             elif v != 'ignore':
 492                 adopted_child_ids += [int(v)]
 493         to_remove = []
 494         for child in todo.children:
 495             assert isinstance(child.id_, int)
 496             if child.id_ not in adopted_child_ids:
 497                 to_remove += [child.id_]
 498         for id_ in to_remove:
 499             child = Todo.by_id(self.conn, id_)
 500             todo.remove_child(child)
 501         for child_id in adopted_child_ids:
 502             if child_id in [c.id_ for c in todo.children]:
 503                 continue
 504             child = Todo.by_id(self.conn, child_id)
 505             todo.add_child(child)
 506         for process_id in processes_to_make_empty:
 507             process = Process.by_id(self.conn, process_id)
 508             made = Todo(None, process, False, todo.date)
 509             made.save(self.conn)
 510             todo.add_child(made)
 511         for process_id in processes_to_make_full:
 512             made = Todo.create_with_children(self.conn, process_id, todo.date)
 513             todo.add_child(made)
 514         effort = self.form_data.get_str('effort', ignore_strict=True)
 515         todo.effort = float(effort) if effort else None
 516         todo.set_conditions(self.conn,
 517                             self.form_data.get_all_int('condition'))
 518         todo.set_blockers(self.conn, self.form_data.get_all_int('blocker'))
 519         todo.set_enables(self.conn, self.form_data.get_all_int('enables'))
 520         todo.set_disables(self.conn, self.form_data.get_all_int('disables'))
 521         todo.is_done = len(self.form_data.get_all_str('done')) > 0
 522         todo.calendarize = len(self.form_data.get_all_str('calendarize')) > 0
 523         todo.comment = self.form_data.get_str('comment', ignore_strict=True)
 524         todo.save(self.conn)
 525         for condition in todo.enables:
 526             condition.save(self.conn)
 527         for condition in todo.disables:
 528             condition.save(self.conn)
 529         return f'/todo?id={todo.id_}'
 530
 531     def _do_POST_versioned_timestamps(self, cls: Any, attr_name: str) -> str:
 532         """Update history timestamps for VersionedAttribute."""
 533         id_ = self.params.get_int_or_none('id')
 534         item = cls.by_id(self.conn, id_)
 535         attr = getattr(item, attr_name)
 536         for k, v in self.form_data.get_first_strings_starting('at:').items():
 537             old = k[3:]
 538             if old[19:] != v:
 539                 attr.reset_timestamp(old, f'{v}.0')
 540         attr.save(self.conn)
 541         cls_name = cls.__name__.lower()
 542         return f'/{cls_name}_{attr_name}s?id={item.id_}'
 543
 544     def do_POST_process_descriptions(self) -> str:
 545         """Update history timestamps for Process.description."""
 546         return self._do_POST_versioned_timestamps(Process, 'description')
 547
 548     def do_POST_process_efforts(self) -> str:
 549         """Update history timestamps for Process.effort."""
 550         return self._do_POST_versioned_timestamps(Process, 'effort')
 551
 552     def do_POST_process_titles(self) -> str:
 553         """Update history timestamps for Process.title."""
 554         return self._do_POST_versioned_timestamps(Process, 'title')
 555
 556     def do_POST_process(self) -> str:
 557         """Update or insert Process of ?id= and fields defined in postvars."""
 558         # pylint: disable=too-many-branches
 559         id_ = self.params.get_int_or_none('id')
 560         for _ in self.form_data.get_all_str('delete'):
 561             process = Process.by_id(self.conn, id_)
 562             process.remove(self.conn)
 563             return '/processes'
 564         process = Process.by_id(self.conn, id_, create=True)
 565         process.title.set(self.form_data.get_str('title'))
 566         process.description.set(self.form_data.get_str('description'))
 567         process.effort.set(self.form_data.get_float('effort'))
 568         process.set_conditions(self.conn,
 569                                self.form_data.get_all_int('condition'))
 570         process.set_blockers(self.conn, self.form_data.get_all_int('blocker'))
 571         process.set_enables(self.conn, self.form_data.get_all_int('enables'))
 572         process.set_disables(self.conn,
 573                              self.form_data.get_all_int('disables'))
 574         process.calendarize = self.form_data.get_all_str('calendarize') != []
 575         process.save(self.conn)
 576         assert isinstance(process.id_, int)
 577         steps: list[ProcessStep] = []
 578         for step_id in self.form_data.get_all_int('keep_step'):
 579             if step_id not in self.form_data.get_all_int('steps'):
 580                 raise BadFormatException('trying to keep unknown step')
 581         for step_id in self.form_data.get_all_int('steps'):
 582             if step_id not in self.form_data.get_all_int('keep_step'):
 583                 continue
 584             step_process_id = self.form_data.get_int(
 585                     f'step_{step_id}_process_id')
 586             parent_id = self.form_data.get_int_or_none(
 587                     f'step_{step_id}_parent_id')
 588             steps += [ProcessStep(step_id, process.id_, step_process_id,
 589                                   parent_id)]
 590         for step_id in self.form_data.get_all_int('steps'):
 591             for step_process_id in self.form_data.get_all_int(
 592                     f'new_step_to_{step_id}'):
 593                 steps += [ProcessStep(None, process.id_, step_process_id,
 594                                       step_id)]
 595         new_step_title = None
 596         for step_identifier in self.form_data.get_all_str('new_top_step'):
 597             try:
 598                 step_process_id = int(step_identifier)
 599                 steps += [ProcessStep(None, process.id_, step_process_id,
 600                                       None)]
 601             except ValueError:
 602                 new_step_title = step_identifier
 603         process.uncache()
 604         process.set_steps(self.conn, steps)
 605         process.set_step_suppressions(self.conn,
 606                                       self.form_data.
 607                                       get_all_int('suppresses'))
 608         process.save(self.conn)
 609         owners_to_set = []
 610         new_owner_title = None
 611         for owner_identifier in self.form_data.get_all_str('step_of'):
 612             try:
 613                 owners_to_set += [int(owner_identifier)]
 614             except ValueError:
 615                 new_owner_title = owner_identifier
 616         process.set_owners(self.conn, owners_to_set)
 617         params = f'id={process.id_}'
 618         if new_step_title:
 619             title_b64_encoded = b64encode(new_step_title.encode()).decode()
 620             params = f'step_to={process.id_}&title_b64={title_b64_encoded}'
 621         elif new_owner_title:
 622             title_b64_encoded = b64encode(new_owner_title.encode()).decode()
 623             params = f'has_step={process.id_}&title_b64={title_b64_encoded}'
 624         return f'/process?{params}'
 625
 626     def do_POST_condition_descriptions(self) -> str:
 627         """Update history timestamps for Condition.description."""
 628         return self._do_POST_versioned_timestamps(Condition, 'description')
 629
 630     def do_POST_condition_titles(self) -> str:
 631         """Update history timestamps for Condition.title."""
 632         return self._do_POST_versioned_timestamps(Condition, 'title')
 633
 634     def do_POST_condition(self) -> str:
 635         """Update/insert Condition of ?id= and fields defined in postvars."""
 636         id_ = self.params.get_int_or_none('id')
 637         for _ in self.form_data.get_all_str('delete'):
 638             condition = Condition.by_id(self.conn, id_)
 639             condition.remove(self.conn)
 640             return '/conditions'
 641         condition = Condition.by_id(self.conn, id_, create=True)
 642         condition.is_active = self.form_data.get_all_str('is_active') != []
 643         condition.title.set(self.form_data.get_str('title'))
 644         condition.description.set(self.form_data.get_str('description'))
 645         condition.save(self.conn)
 646         return f'/condition?id={condition.id_}'