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

   1 from http.server import BaseHTTPRequestHandler, HTTPServer
   2 import sys
   3 import os
   4 import html
   5 import jinja2
   6 import decimal
   7 from urllib.parse import parse_qs, urlparse
   8 hostName = "localhost"
   9 serverPort = 8082
  10
  11
  12 class HandledException(Exception):
  13     pass
  14
  15
  16 def handled_error_exit(msg):
  17     print(f"ERROR: {msg}")
  18     sys.exit(1)
  19
  20
  21 def apply_booking_to_account_balances(account_sums, account, currency, amount):
  22     if not account in account_sums:
  23         account_sums[account] = {currency: amount}
  24     elif not currency in account_sums[account].keys():
  25         account_sums[account][currency] = amount
  26     else:
  27         account_sums[account][currency] += amount
  28
  29
  30 def bookings_to_account_tree(bookings):
  31     account_sums = {}
  32     for booking in bookings:
  33         for account, changes in booking.account_changes.items():
  34             for currency, amount in changes.items():
  35                 apply_booking_to_account_balances(account_sums, account, currency, amount)
  36     account_tree = {}
  37     def collect_branches(account_name, path):
  38         node = account_tree
  39         path_copy = path[:]
  40         while len(path_copy) > 0:
  41             step = path_copy.pop(0)
  42             node = node[step]
  43         toks = account_name.split(":", maxsplit=1)
  44         parent = toks[0]
  45         if parent in node.keys():
  46             child = node[parent]
  47         else:
  48             child = {}
  49             node[parent] = child
  50         if len(toks) == 2:
  51             k, v = collect_branches(toks[1], path + [parent])
  52             if k not in child.keys():
  53                 child[k] = v
  54             else:
  55                 child[k].update(v)
  56         return parent, child
  57     for account_name in sorted(account_sums.keys()):
  58         k, v = collect_branches(account_name, [])
  59         if k not in account_tree.keys():
  60             account_tree[k] = v
  61         else:
  62             account_tree[k].update(v)
  63     def collect_totals(parent_path, tree_node):
  64         for k, v in tree_node.items():
  65             child_path = parent_path + ":" + k
  66             for currency, amount in collect_totals(child_path, v).items():
  67                 apply_booking_to_account_balances(account_sums, parent_path, currency, amount)
  68         return account_sums[parent_path]
  69     for account_name in account_tree.keys():
  70         account_sums[account_name] = collect_totals(account_name, account_tree[account_name])
  71     return account_tree, account_sums
  72
  73
  74 def parse_lines(lines, validate_bookings=True):
  75     import datetime
  76     inside_booking = False
  77     date_string, description = None, None
  78     booking_lines = []
  79     start_line = 0
  80     bookings = []
  81     comments = []
  82     lines = lines.copy() + [''] # to ensure a booking-ending last line
  83     for i, line in enumerate(lines):
  84         prefix = f"line {i}"
  85         # we start with the case of an utterly empty line
  86         comments += [""]
  87         stripped_line = line.rstrip()
  88         if stripped_line == '':
  89             if inside_booking:
  90                 # assume we finished a booking, finalize, and commit to DB
  91                 if len(booking_lines) < 2:
  92                     raise HandledException(f"{prefix} booking ends to early")
  93                 booking = Booking(date_string, description, booking_lines, start_line, validate_bookings)
  94                 bookings += [booking]
  95             # expect new booking to follow so re-zeroall booking data
  96             inside_booking = False
  97             date_string, description = None, None
  98             booking_lines = []
  99             continue
 100         # if non-empty line, first get comment if any, and commit to DB
 101         split_by_comment = stripped_line.split(sep=";", maxsplit=1)
 102         if len(split_by_comment) == 2:
 103             comments[i] = split_by_comment[1].lstrip()
 104         # if pre-comment empty: if inside_booking, this must be a comment-only line so we keep it for later ledger-output to capture those comments; otherwise, no more to process for this line
 105         non_comment = split_by_comment[0].rstrip()
 106         if non_comment.rstrip() == '':
 107              if inside_booking:
 108                  booking_lines += ['']
 109              continue
 110         # if we're starting a booking, parse by first-line pattern
 111         if not inside_booking:
 112             start_line = i
 113             toks = non_comment.split(maxsplit=1)
 114             date_string = toks[0]
 115             try:
 116                 datetime.datetime.strptime(date_string, '%Y-%m-%d')
 117             except ValueError:
 118                 raise HandledException(f"{prefix} bad date string: {date_string}")
 119             try:
 120                 description = toks[1]
 121             except IndexError:
 122                 raise HandledException(f"{prefix} bad description: {description}")
 123             inside_booking = True
 124             booking_lines += [non_comment]
 125             continue
 126         # otherwise, read as transfer data
 127         toks = non_comment.split()  # ignore specification's allowance of single spaces in names
 128         if len(toks) > 3:
 129             raise HandledException(f"{prefix} too many booking line tokens: {toks}")
 130         amount, currency = None, None
 131         account_name = toks[0]
 132         if account_name[0] == '[' and account_name[-1] == ']':
 133             # ignore specification's differentiation of "virtual" accounts
 134             account_name = account_name[1:-1]
 135         decimal_chars = ".-0123456789"
 136         if len(toks) == 3:
 137             i_currency = 1
 138             try:
 139                 amount = decimal.Decimal(toks[1])
 140                 i_currency = 2
 141             except decimal.InvalidOperation:
 142                 try:
 143                     amount = decimal.Decimal(toks[2])
 144                 except decimal.InvalidOperation:
 145                     raise HandledException(f"{prefix} no decimal number in: {toks[1:]}")
 146             currency = toks[i_currency]
 147             if currency[0] in decimal_chars:
 148                 raise HandledException(f"{prefix} currency starts with int, dot, or minus: {currency}")
 149         elif len(toks) == 2:
 150             value = toks[1]
 151             inside_amount = False
 152             inside_currency = False
 153             amount_string = ""
 154             currency = ""
 155             dots_counted = 0
 156             for i, c in enumerate(value):
 157                 if i == 0:
 158                     if c in decimal_chars:
 159                         inside_amount = True
 160                     else:
 161                         inside_currency = True
 162                 if inside_currency:
 163                     if c in decimal_chars and len(amount_string) == 0:
 164                         inside_currency = False
 165                         inside_amount = True
 166                     else:
 167                         currency += c
 168                         continue
 169                 if inside_amount:
 170                     if c not in decimal_chars:
 171                         if len(currency) > 0:
 172                             raise HandledException(f"{prefix} amount has non-decimal chars: {value}")
 173                         inside_currency = True
 174                         inside_amount = False
 175                         currency += c
 176                         continue
 177                     if c == '-' and len(amount_string) > 1:
 178                         raise HandledException(f"{prefix} amount has non-start '-': {value}")
 179                     if c == '.':
 180                         if dots_counted > 1:
 181                             raise HandledException(f"{prefix} amount has multiple dots: {value}")
 182                         dots_counted += 1
 183                     amount_string += c
 184             if len(amount_string) == 0:
 185                 raise HandledException(f"{prefix} amount missing: {value}")
 186             if len(currency) == 0:
 187                 raise HandledException(f"{prefix} currency missing: {value}")
 188             amount = decimal.Decimal(amount_string)
 189         booking_lines += [(account_name, amount, currency)]
 190     if inside_booking:
 191         raise HandledException(f"{prefix} last booking unfinished")
 192     return bookings, comments
 193
 194
 195 class Booking:
 196
 197     def __init__(self, date_string, description, booking_lines, start_line, process=True):
 198         self.date_string = date_string
 199         self.description = description
 200         self.lines = booking_lines
 201         self.start_line = start_line
 202         if process:
 203             self.validate_booking_lines()
 204             self.sink = {}
 205             self.account_changes = self.parse_booking_lines_to_account_changes()
 206
 207     def validate_booking_lines(self):
 208         prefix = f"booking at line {self.start_line}"
 209         sums = {}
 210         empty_values = 0
 211         for line in self.lines[1:]:
 212             if line == '':
 213                 continue
 214             _, amount, currency = line
 215             if amount is None:
 216                 if empty_values > 0:
 217                     raise HandledException(f"{prefix} relates more than one empty value of same currency {currency}")
 218                 empty_values += 1
 219                 continue
 220             if currency not in sums:
 221                 sums[currency] = 0
 222             sums[currency] += amount
 223         if empty_values == 0:
 224             for k, v in sums.items():
 225                 if v != 0:
 226                     raise HandledException(f"{prefix} does not add up to zero / {k} {v}")
 227         else:
 228             sinkable = False
 229             for k, v in sums.items():
 230                 if v != 0:
 231                     sinkable = True
 232             if not sinkable:
 233                 raise HandledException(f"{prefix} has empty value that cannot be filled")
 234
 235     def parse_booking_lines_to_account_changes(self):
 236         account_changes = {}
 237         debt = {}
 238         sink_account = None
 239         for line in self.lines[1:]:
 240             if line == '':
 241                 continue
 242             account, amount, currency = line
 243             if amount is None:
 244                 sink_account = account
 245                 continue
 246             apply_booking_to_account_balances(account_changes, account, currency, amount)
 247             if currency not in debt:
 248                 debt[currency] = amount
 249             else:
 250                 debt[currency] += amount
 251         if sink_account:
 252             for currency, amount in debt.items():
 253                 apply_booking_to_account_balances(account_changes, sink_account, currency, -amount)
 254                 self.sink[currency] = -amount
 255         return account_changes
 256
 257
 258
 259 class Database:
 260
 261     def __init__(self):
 262         db_name = "_ledger"
 263         self.db_file = db_name + ".json"
 264         self.lock_file = db_name+ ".lock"
 265         self.bookings = []
 266         self.comments = []
 267         self.real_lines = []
 268         if os.path.exists(self.db_file):
 269             with open(self.db_file, "r") as f:
 270                 self.real_lines += [l.rstrip() for l in f.readlines()]
 271         ret = parse_lines(self.real_lines)
 272         self.bookings += ret[0]
 273         self.comments += ret[1]
 274
 275     def get_lines(self, start, end):
 276         return self.real_lines[start:end]
 277
 278     def replace(self, start, end, lines):
 279         import shutil
 280         if os.path.exists(self.lock_file):
 281             raise HandledException('Sorry, lock file!')
 282         if os.path.exists(self.db_file):
 283             shutil.copy(self.db_file, self.db_file + ".bak")
 284         f = open(self.lock_file, 'w+')
 285         f.close()
 286         total_lines = self.real_lines[:start] + lines + self.real_lines[end:]
 287         text = '\n'.join(total_lines)
 288         with open(self.db_file, 'w') as f:
 289             f.write(text);
 290         os.remove(self.lock_file)
 291
 292     def append(self, lines):
 293         import shutil
 294         if os.path.exists(self.lock_file):
 295             raise HandledException('Sorry, lock file!')
 296         if os.path.exists(self.db_file):
 297             shutil.copy(self.db_file, self.db_file + ".bak")
 298         f = open(self.lock_file, 'w+')
 299         f.close()
 300         with open(self.db_file, 'a') as f:
 301             f.write('\n\n' + '\n'.join(lines) + '\n\n');
 302         os.remove(self.lock_file)
 303
 304     def add_taxes(self, lines, finish=False):
 305         ret = []
 306         bookings, _ = parse_lines(lines)
 307         date = bookings[0].date_string
 308         acc_kk_add = 'Reserves:KrankenkassenBeitragsWachstum'
 309         acc_kk_minimum = 'Reserves:Month:KrankenkassenDefaultBeitrag'
 310         acc_kk = 'Expenses:KrankenKasse'
 311         acc_est = 'Reserves:Einkommenssteuer'
 312         acc_assets = 'Assets'
 313         acc_buffer = 'Reserves:NeuAnfangsPuffer:Ausgaben'
 314         last_monthbreak_assets = 0
 315         last_monthbreak_est = 0
 316         last_monthbreak_kk_minimum = 0
 317         last_monthbreak_kk_add = 0
 318         buffer_expenses = 0
 319         kk_expenses = 0
 320         est_expenses = 0
 321         for b in self.bookings:
 322             if date == b.date_string:
 323                 break
 324             acc_keys = b.account_changes.keys()
 325             if acc_buffer in acc_keys:
 326                 buffer_expenses -= b.account_changes[acc_buffer]['€']
 327             if acc_kk_add in acc_keys:
 328                 kk_expenses += b.account_changes[acc_kk_add]['€']
 329             if acc_kk in acc_keys:
 330                 kk_expenses += b.account_changes[acc_kk]['€']
 331             if acc_est in acc_keys:
 332                 est_expenses += b.account_changes[acc_est]['€']
 333             if finish and acc_kk_add in acc_keys and acc_kk_minimum in acc_keys:
 334                 last_monthbreak_kk_add = b.account_changes[acc_kk_add]['€']
 335                 last_monthbreak_est = b.account_changes[acc_est]['€']
 336                 last_monthbreak_kk_minimum = b.account_changes[acc_kk_minimum]['€']
 337                 last_monthbreak_assets = b.account_changes[acc_buffer]['€']
 338         old_needed_income = last_monthbreak_assets + last_monthbreak_kk_add + last_monthbreak_kk_minimum + last_monthbreak_est
 339         if finish:
 340             ret += [f'  {acc_est}  {-last_monthbreak_est}€ ; for old assumption of needed income: {old_needed_income}€']
 341         _, account_sums = bookings_to_account_tree(bookings)
 342         expenses_so_far = -1 * account_sums[acc_assets]['€'] - old_needed_income
 343         needed_income_before_kk = expenses_so_far
 344         ESt_this_month = 0
 345         left_over = needed_income_before_kk - ESt_this_month
 346         too_low = 0
 347         too_high = 2 * needed_income_before_kk
 348         E0 = decimal.Decimal(10908)
 349         E1 = decimal.Decimal(15999)
 350         E2 = decimal.Decimal(62809)
 351         E3 = decimal.Decimal(277825)
 352         months_passed = int(date[5:7]) - 1
 353         while True:
 354             zvE = buffer_expenses - kk_expenses + (12 - months_passed) * needed_income_before_kk
 355             if finish:
 356                 zvE += last_monthbreak_assets + last_monthbreak_kk_add + last_monthbreak_kk_minimum
 357             if zvE < E0:
 358                 ESt = decimal.Decimal(0)
 359             elif zvE < E1:
 360                 y = (zvE - E0)/10000
 361                 ESt = (decimal.Decimal(979.18) * y + 1400) * y
 362             elif zvE < E2:
 363                 y = (zvE - E1)/10000
 364                 ESt = (decimal.Decimal(192.59) * y + 2397) * y + decimal.Decimal(966.53)
 365             elif zvE < E3:
 366                 ESt = decimal.Decimal(0.42) * (zvE - decimal.Decimal(62809))  + decimal.Decimal(16405.54)
 367             else:
 368                 ESt = decimal.Decimal(0.45) * (zvE - decimal.Decimal(277825)) + decimal.Decimal(106713.52)
 369             ESt_this_month = (ESt + last_monthbreak_est - est_expenses) / (12 - months_passed)
 370             left_over = needed_income_before_kk - ESt_this_month
 371             if abs(left_over - expenses_so_far) < 0.001:
 372                 break
 373             elif left_over < expenses_so_far:
 374                 too_low = needed_income_before_kk
 375             elif left_over > expenses_so_far:
 376                 too_high = needed_income_before_kk
 377             needed_income_before_kk = too_low + (too_high - too_low)/2
 378         ESt_this_month = ESt_this_month.quantize(decimal.Decimal('0.00'))
 379         ret += [f'  {acc_est}  {ESt_this_month}€ ; expenses so far: {expenses_so_far:.2f}€; zvE: {zvE:.2f}€; ESt total: {ESt:.2f}€; needed before Krankenkasse: {needed_income_before_kk:.2f}€']
 380         kk_minimum_income = 1131.67
 381         if date < '2023-02-01':
 382             kk_minimum_income = decimal.Decimal(1096.67)
 383             kk_factor = decimal.Decimal(0.189)
 384             kk_minimum_tax = decimal.Decimal(207.27).quantize(decimal.Decimal('0.00'))
 385         elif date < '2023-08-01':
 386             kk_factor = decimal.Decimal(0.191)
 387             kk_minimum_tax = decimal.Decimal(216.15).quantize(decimal.Decimal('0.00'))
 388         else:
 389             kk_factor = decimal.Decimal(0.197)
 390             kk_minimum_tax = decimal.Decimal(222.94).quantize(decimal.Decimal('0.00'))
 391         kk_add = max(0, kk_factor * needed_income_before_kk - kk_minimum_tax)
 392         kk_add = decimal.Decimal(kk_add).quantize(decimal.Decimal('0.00'))
 393         if finish:
 394             ret += [f'  {acc_kk_add}  {-last_monthbreak_kk_add}€  ; max(0, {kk_factor:.3f} * {-(old_needed_income - last_monthbreak_est):.2f}€ - {kk_minimum_tax}€)']
 395         else:
 396             ret += [f'  {acc_kk_minimum}  {kk_minimum_tax}€  ; assumed minimum income {kk_minimum_income:.2f}€ * {kk_factor:.3f}']
 397         ret += [f'  {acc_kk_add}  {kk_add}€  ; max(0, {kk_factor:.3f} * {needed_income_before_kk:.2f}€ - {kk_minimum_tax}€)']
 398         diff = - last_monthbreak_est + ESt_this_month - last_monthbreak_kk_add + kk_add
 399         if not finish:
 400             diff += kk_minimum_tax
 401         final_minus = expenses_so_far + old_needed_income + diff
 402         ret += [f'  {acc_assets}  {-diff} €']
 403         ret += [f'  {acc_assets}  {final_minus} €']
 404         ret += [f'  {acc_buffer}  {-final_minus} €']
 405         return ret
 406
 407
 408 class MyServer(BaseHTTPRequestHandler):
 409     header = """<html>
 410 <meta charset="UTF-8">
 411 <style>
 412 body { color: #000000; }
 413 table { margin-bottom: 2em; }
 414 th, td { text-align: left }
 415 input[type=number] { text-align: right; font-family: monospace; }
 416 .money { font-family: monospace; text-align: right; }
 417 .comment { font-style: italic; color: #777777; }
 418 .full_line_comment { display: block; white-space: nowrap; width: 0; }
 419 </style>
 420 <body>
 421 <a href="/ledger">ledger</a>
 422 <a href="/balance">balance</a>
 423 <a href="/add_free">add free</a>
 424 <a href="/add_structured">add structured</a>
 425 <hr />
 426 """
 427     footer = "</body>\n<html>"
 428
 429     def do_POST(self):
 430         db = Database()
 431         length = int(self.headers['content-length'])
 432         postvars = parse_qs(self.rfile.read(length).decode(), keep_blank_values=1)
 433         parsed_url = urlparse(self.path)
 434         lines = []
 435         add_empty_line = None
 436         start = int(postvars['start'][0])
 437         end = int(postvars['end'][0])
 438         if '/add_structured' == parsed_url.path and not 'revert' in postvars.keys():
 439             date = postvars['date'][0]
 440             description = postvars['description'][0]
 441             start_comment = postvars['line_0_comment'][0]
 442             lines = [f'{date} {description} ; {start_comment}']
 443             if 'line_0_add' in postvars.keys():
 444                 add_empty_line = 0
 445             i = j = 1
 446             while f'line_{i}_comment' in postvars.keys():
 447                 if f'line_{i}_delete' in postvars.keys():
 448                     i += 1
 449                     continue
 450                 if f'line_{i}_add' in postvars.keys():
 451                     add_empty_line = j
 452                 account = postvars[f'line_{i}_account'][0]
 453                 amount = postvars[f'line_{i}_amount'][0]
 454                 currency = postvars[f'line_{i}_currency'][0]
 455                 comment = postvars[f'line_{i}_comment'][0]
 456                 i += 1
 457                 new_main = f'{account} {amount} {currency}'
 458                 if '' == new_main.rstrip() == comment.rstrip():  # don't write empty lines
 459                     continue
 460                 j += 1
 461                 new_line = new_main
 462                 if comment.rstrip() != '':
 463                     new_line += f' ; {comment}'
 464                 lines += [new_line]
 465             if 'add_taxes' in postvars.keys():
 466                 lines += db.add_taxes(lines, finish=False)
 467             elif 'add_taxes2' in postvars.keys():
 468                 lines += db.add_taxes(lines, finish=True)
 469         elif '/add_free' == parsed_url.path:
 470             lines = postvars['booking'][0].splitlines()
 471         try:
 472             if ('save' in postvars.keys()) or ('check' in postvars.keys()):
 473                 _, _ = parse_lines(lines)
 474             if 'save' in postvars.keys():
 475                 if start == end == 0:
 476                     db.append(lines)
 477                     redir_url = f'/#last'
 478                 else:
 479                     db.replace(start, end, lines)
 480                     redir_url = f'/#{start}'
 481                 self.send_response(301)
 482                 self.send_header('Location', redir_url)
 483                 self.end_headers()
 484             else:
 485                 page = self.header + self.add_structured(db, start, end, temp_lines=lines, add_empty_line=add_empty_line) + self.footer
 486                 self.send_response(200)
 487                 self.send_header("Content-type", "text/html")
 488                 self.end_headers()
 489                 self.wfile.write(bytes(page, "utf-8"))
 490         except HandledException as e:
 491             self.send_response(400)
 492             self.send_header("Content-type", "text/html")
 493             self.end_headers()
 494             page = f'{self.header}ERROR: {e}{self.footer}'
 495             self.wfile.write(bytes(page, "utf-8"))
 496
 497     def do_GET(self):
 498         self.send_response(200)
 499         self.send_header("Content-type", "text/html")
 500         self.end_headers()
 501         db = Database()
 502         parsed_url = urlparse(self.path)
 503         page = self.header + ''
 504         params = parse_qs(parsed_url.query)
 505         start = int(params.get('start', ['0'])[0])
 506         end = int(params.get('end', ['0'])[0])
 507         if parsed_url.path == '/balance':
 508             stop_date = params.get('stop', [None])[0]
 509             page += self.balance_as_html(db, stop_date)
 510         elif parsed_url.path == '/add_free':
 511             page += self.add_free(db, start, end)
 512         elif parsed_url.path == '/add_structured':
 513             page += self.add_structured(db, start, end)
 514         elif parsed_url.path == '/copy_free':
 515             page += self.add_free(db, start, end, copy=True)
 516         elif parsed_url.path == '/copy_structured':
 517             page += self.add_structured(db, start, end, copy=True)
 518         elif parsed_url.path == '/ledger2':
 519             page += self.ledger2_as_html(db)
 520         else:
 521             page += self.ledger_as_html(db)
 522         page += self.footer
 523         self.wfile.write(bytes(page, "utf-8"))
 524
 525     def balance_as_html(self, db, stop_date=None):
 526         lines = []
 527         bookings = db.bookings
 528         if stop_date:
 529             bookings = []
 530             for b in db.bookings:
 531                 if b.date_string == stop_date:
 532                     break
 533                 bookings += [b]
 534         account_tree, account_sums = bookings_to_account_tree(bookings)
 535         def print_subtree(lines, indent, node, subtree, path):
 536             line = f"{indent}{node}"
 537             n_tabs = 5 - (len(line) // 8)
 538             line += n_tabs * "\t"
 539             if "€" in account_sums[path + node].keys():
 540                 amount = account_sums[path + node]["€"]
 541                 line += f"{amount:9.2f} €\t"
 542             else:
 543                 line += f"\t\t"
 544             for currency, amount in account_sums[path + node].items():
 545                 if currency != '€' and amount > 0:
 546                     line += f"{amount:5.2f} {currency}\t"
 547             lines += [line]
 548             indent += "  "
 549             for k, v in sorted(subtree.items()):
 550                 print_subtree(lines, indent, k, v, path + node + ":")
 551         for k, v in sorted(account_tree.items()):
 552             print_subtree(lines, "", k, v, "")
 553         content = "\n".join(lines)
 554         return f"<pre>{content}</pre>"
 555
 556     def ledger2_as_html(self, db):
 557         single_c_tmpl = jinja2.Template('<span class="comment">{{c|e}}</span><br />')
 558         booking_tmpl = jinja2.Template("""
 559 <p id="{{start}}"><a href="#{{start}}">{{date}}</a> {{desc}} <span class="comment">{{head_comment|e}}</span>
 560 [edit: <a href="/add_structured?start={{start}}&end={{end}}">structured</a>
 561 / <a href="/add_free?start={{start}}&end={{end}}">free</a>
 562 | copy:<a href="/copy_structured?start={{start}}&end={{end}}">structured</a>
 563 / <a href="/copy_free?start={{start}}&end={{end}}">free</a>]
 564 <table>
 565 {% for l in booking_lines %}
 566 <tr><td>{{l.acc|e}}</td><td class="money">{{l.money|e}}</td><td class="money">{{l.balance|e}}</td></tr>
 567 {% endfor %}
 568 </table></p>
 569 """)
 570         elements_to_write = []
 571         account_sums = {}
 572         for booking in db.bookings:
 573             i = booking.start_line
 574             booking_end = booking.start_line + len(booking.lines)
 575             booking_lines = []
 576             for booking_line in booking.lines[1:]:
 577                 if booking_line == '':
 578                     continue
 579                 account = booking_line[0]
 580                 account_toks = account.split(':')
 581                 path = ''
 582                 for tok in account_toks:
 583                     path += tok
 584                     if not path in account_sums.keys():
 585                         account_sums[path] = {}
 586                     path += ':'
 587                 moneys = []
 588                 money = ''
 589                 if booking_line[1] is not None:
 590                     moneys += [(booking_line[1], booking_line[2])]
 591                     money = f'{moneys[0][0]} {moneys[0][1]}'
 592                 else:
 593                     for currency, amount in booking.sink.items():
 594                         moneys += {(amount, currency)}
 595                     money = '['
 596                     for m in moneys:
 597                         money += f'{m[0]} {m[1]} '
 598                     money += ']'
 599                 balance = ''
 600                 for amount, currency in moneys:
 601                     path = ''
 602                     for tok in account_toks:
 603                         path += tok
 604                         if not currency in account_sums[path].keys():
 605                             account_sums[path][currency] = 0
 606                         account_sums[path][currency] += amount
 607                         path += ':'
 608                     balance += f'{account_sums[account][currency]} {currency}'
 609                 booking_lines += [{'acc': booking_line[0], 'money':money, 'balance':balance}]
 610             elements_to_write += [booking_tmpl.render(
 611                 start=booking.start_line,
 612                 end=booking_end,
 613                 date=booking.date_string,
 614                 desc=booking.description,
 615                 head_comment=db.comments[booking.start_line],
 616                 booking_lines = booking_lines)]
 617         return '\n'.join(elements_to_write)
 618
 619     def ledger_as_html(self, db):
 620         single_c_tmpl = jinja2.Template('<span class="comment">{{c|e}}</span><br />')
 621         booking_tmpl = jinja2.Template("""
 622 <p id="{{start}}"><a {% if last %}id="last"{% endif %} href="#{{start}}">{{date}}</a> {{desc}} <span class="comment">{{head_comment|e}}</span>
 623 [edit: <a href="/add_structured?start={{start}}&end={{end}}">structured</a>
 624 / <a href="/add_free?start={{start}}&end={{end}}">free</a>
 625 | copy:<a href="/copy_structured?start={{start}}&end={{end}}">structured</a>
 626 / <a href="/copy_free?start={{start}}&end={{end}}">free</a>]
 627 <table>
 628 {% for l in booking_lines %}
 629 {% if l.acc %}
 630 <tr><td>{{l.acc|e}}</td><td class="money">{{l.money|e}}</td><td class="comment">{{l.comment|e}}</td></tr>
 631 {% else %}
 632 <tr><td><div class="comment full_line_comment">{{l.comment|e}}</div></td></tr>
 633 {% endif %}
 634 {% endfor %}
 635 </table></p>
 636 """)
 637         elements_to_write = []
 638         last_i = i = 0
 639         last_start = db.bookings[-1].start_line
 640         for booking in db.bookings:
 641             i = booking.start_line
 642             elements_to_write += [single_c_tmpl.render(c=c) for c in db.comments[last_i:i] if c != '']
 643             booking_end = last_i = booking.start_line + len(booking.lines)
 644             booking_lines = []
 645             for booking_line in booking.lines[1:]:
 646                 i += 1
 647                 comment = db.comments[i]
 648                 if booking_line == '':
 649                     booking_lines += [{'acc': None, 'money': None, 'comment': comment}]
 650                     continue
 651                 account = booking_line[0]
 652                 money = ''
 653                 if booking_line[1] is not None:
 654                     money = f'{booking_line[1]} {booking_line[2]}'
 655                 booking_lines += [{'acc': booking_line[0], 'money':money, 'comment':comment}]
 656             elements_to_write += [booking_tmpl.render(
 657                 last=booking.start_line == last_start,
 658                 start=booking.start_line,
 659                 end=booking_end,
 660                 date=booking.date_string,
 661                 desc=booking.description,
 662                 head_comment=db.comments[booking.start_line],
 663                 booking_lines = booking_lines)]
 664         elements_to_write += [single_c_tmpl.render(c=c) for c in db.comments[last_i:] if c != '']
 665         return '\n'.join(elements_to_write)
 666
 667     def add_free(self, db, start=0, end=0, copy=False):
 668         tmpl = jinja2.Template("""
 669 <form method="POST" action="{{action|e}}">
 670 <textarea name="booking" rows=10 cols=80>
 671 {% for line in lines %}{{ line }}
 672 {% endfor %}
 673 </textarea>
 674 <input type="hidden" name="start" value={{start}} />
 675 <input type="hidden" name="end" value={{end}} />
 676 <input type="submit" name="save" value="save!">
 677 </form>
 678 """)
 679         lines = db.get_lines(start, end)
 680         if copy:
 681             start = end = 0
 682         return tmpl.render(action='add_free', start=start, end=end, lines=lines)
 683
 684     def add_structured(self, db, start=0, end=0, copy=False, temp_lines=[], add_empty_line=None):
 685         tmpl = jinja2.Template("""
 686 <form method="POST" action="{{action|e}}">
 687 <input type="submit" name="check" value="check" />
 688 <input type="submit" name="revert" value="revert" />
 689 <input type="submit" name="add_taxes" value="add taxes" />
 690 <input type="submit" name="add_taxes2" value="add taxes2" />
 691 <br />
 692 <input name="date" value="{{date|e}}" size=9 />
 693 <input name="description" value="{{desc|e}}" list="descriptions" />
 694 <textarea name="line_0_comment" rows=1 cols=20>{{head_comment|e}}</textarea>
 695 <input type="submit" name="line_0_add" value="[+]" />
 696 <br />
 697 {% for line in booking_lines %}
 698 <input name="line_{{line.i}}_account" value="{{line.acc|e}}" size=40 list="accounts" />
 699 <input type="number" name="line_{{line.i}}_amount" step=0.01 value="{{line.amt}}" size=10 />
 700 <input name="line_{{line.i}}_currency" value="{{line.curr|e}}" size=3 list="currencies" />
 701 <input type="submit" name="line_{{line.i}}_delete" value="[x]" />
 702 <input type="submit" name="line_{{line.i}}_add" value="[+]" />
 703 <textarea name="line_{{line.i}}_comment" rows=1 cols={% if line.comm_cols %}{{line.comm_cols}}{% else %}20{% endif %}>{{line.comment|e}}</textarea>
 704 <br />
 705 {% endfor %}
 706 {% for name, items in datalist_sets.items() %}
 707 <datalist id="{{name}}">
 708 {% for item in items %}
 709   <option value="{{item|e}}">{{item|e}}</option>
 710 {% endfor %}
 711 </datalist>
 712 {% endfor %}
 713 <input type="hidden" name="start" value={{start}} />
 714 <input type="hidden" name="end" value={{end}} />
 715 <input type="submit" name="save" value="save!">
 716 </form>
 717 """)
 718         import datetime
 719         lines = temp_lines if len(''.join(temp_lines)) > 0 else db.get_lines(start, end)
 720         bookings, comments = parse_lines(lines, validate_bookings=False)
 721         if len(bookings) > 1:
 722             raise HandledException('can only edit single Booking')
 723         if add_empty_line is not None:
 724             comments = comments[:add_empty_line+1] + [''] + comments[add_empty_line+1:]
 725             booking = bookings[0]
 726             booking.lines = booking.lines[:add_empty_line+1] + [''] + booking.lines[add_empty_line+1:]
 727         action = 'add_structured'
 728         datalist_sets = {'descriptions': set(), 'accounts': set(), 'currencies': set()}
 729         for b in db.bookings:
 730             datalist_sets['descriptions'].add(b.description)
 731             for account, moneys in b.account_changes.items():
 732                 datalist_sets['accounts'].add(account)
 733                 for currency in moneys.keys():
 734                     datalist_sets['currencies'].add(currency)
 735         content = ''
 736         today = str(datetime.datetime.now())[:10]
 737         booking_lines = []
 738         if copy:
 739             start = end = 0
 740         desc = head_comment = ''
 741         if len(bookings) == 0:
 742             for i in range(1, 3):
 743                 booking_lines += [{'i': i, 'acc': '', 'amt': '', 'curr': '', 'comment': ''}]
 744             date=today
 745         else:
 746             booking = bookings[0]
 747             desc = booking.description
 748             date = today if copy else booking.date_string
 749             head_comment=comments[0]
 750             last_line = len(comments)
 751             for i in range(1, len(comments)):
 752                 account = amount = currency = ''
 753                 if i < len(booking.lines) and booking.lines[i] != '':
 754                     account = booking.lines[i][0]
 755                     amount = booking.lines[i][1]
 756                     currency = booking.lines[i][2]
 757                 booking_lines += [{
 758                         'i': i,
 759                         'acc': account,
 760                         'amt': amount,
 761                         'curr': currency if currency else '',
 762                         'comment': comments[i],
 763                         'comm_cols': len(comments[i])}]
 764         content += tmpl.render(
 765                 action=action,
 766                 date=date,
 767                 desc=desc,
 768                 head_comment=head_comment,
 769                 booking_lines=booking_lines,
 770                 datalist_sets=datalist_sets,
 771                 start=start,
 772                 end=end)
 773         return content
 774
 775
 776 if __name__ == "__main__":
 777     webServer = HTTPServer((hostName, serverPort), MyServer)
 778     print(f"Server started http://{hostName}:{serverPort}")
 779     try:
 780         webServer.serve_forever()
 781     except KeyboardInterrupt:
 782         pass
 783     webServer.server_close()
 784     print("Server stopped.")