X-Git-Url: https://plomlompom.com/repos/condition_descriptions?a=blobdiff_plain;f=ledger.py;h=02e0273c74f26590e426e7860d72576e0721073f;hb=24835e99387f4df91280ad83208f6db3e10ecea5;hp=334318ff301eb186efa6684809c9ebac1807d177;hpb=c3b5860ae1ca76c2a1dc3b61d3c1242d581424f0;p=misc diff --git a/ledger.py b/ledger.py index 334318f..02e0273 100755 --- a/ledger.py +++ b/ledger.py @@ -1,5 +1,10 @@ from http.server import BaseHTTPRequestHandler, HTTPServer -import sys +import os +import html +import jinja2 +import decimal +import datetime +from urllib.parse import parse_qs, urlparse hostName = "localhost" serverPort = 8082 @@ -8,36 +13,201 @@ class HandledException(Exception): pass -def handled_error_exit(msg): - print(f"ERROR: {msg}") - sys.exit(1) - - def apply_booking_to_account_balances(account_sums, account, currency, amount): if not account in account_sums: - account_sums[account] = {currency: amount} + account_sums[account] = {currency: amount} elif not currency in account_sums[account].keys(): account_sums[account][currency] = amount else: account_sums[account][currency] += amount +def bookings_to_account_tree(bookings): + account_sums = {} + for booking in bookings: + for account, changes in booking.account_changes.items(): + for currency, amount in changes.items(): + apply_booking_to_account_balances(account_sums, account, currency, amount) + account_tree = {} + def collect_branches(account_name, path): + node = account_tree + path_copy = path[:] + while len(path_copy) > 0: + step = path_copy.pop(0) + node = node[step] + toks = account_name.split(":", maxsplit=1) + parent = toks[0] + if parent in node.keys(): + child = node[parent] + else: + child = {} + node[parent] = child + if len(toks) == 2: + k, v = collect_branches(toks[1], path + [parent]) + if k not in child.keys(): + child[k] = v + else: + child[k].update(v) + return parent, child + for account_name in sorted(account_sums.keys()): + k, v = collect_branches(account_name, []) + if k not in account_tree.keys(): + account_tree[k] = v + else: + account_tree[k].update(v) + def collect_totals(parent_path, tree_node): + for k, v in tree_node.items(): + child_path = parent_path + ":" + k + for currency, amount in collect_totals(child_path, v).items(): + apply_booking_to_account_balances(account_sums, parent_path, currency, amount) + return account_sums[parent_path] + for account_name in account_tree.keys(): + account_sums[account_name] = collect_totals(account_name, account_tree[account_name]) + return account_tree, account_sums + + +def parse_lines(lines, validate_bookings=True): + import datetime + inside_booking = False + date_string, description = None, None + booking_lines = [] + start_line = 0 + bookings = [] + comments = [] + lines = lines.copy() + [''] # to ensure a booking-ending last line + last_date = '' + for i, line in enumerate(lines): + prefix = f"line {i}" + # we start with the case of an utterly empty line + comments += [""] + stripped_line = line.rstrip() + if stripped_line == '': + if inside_booking: + # assume we finished a booking, finalize, and commit to DB + if len(booking_lines) < 2: + raise HandledException(f"{prefix} booking ends to early") + booking = Booking(date_string, description, booking_lines, start_line, validate_bookings) + bookings += [booking] + # expect new booking to follow so re-zeroall booking data + inside_booking = False + date_string, description = None, None + booking_lines = [] + continue + # if non-empty line, first get comment if any, and commit to DB + split_by_comment = stripped_line.split(sep=";", maxsplit=1) + if len(split_by_comment) == 2: + comments[i] = split_by_comment[1].lstrip() + # 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 + non_comment = split_by_comment[0].rstrip() + if non_comment.rstrip() == '': + if inside_booking: + booking_lines += [''] + continue + # if we're starting a booking, parse by first-line pattern + if not inside_booking: + start_line = i + toks = non_comment.split(maxsplit=1) + date_string = toks[0] + try: + datetime.datetime.strptime(date_string, '%Y-%m-%d') + except ValueError: + raise HandledException(f"{prefix} bad date string: {date_string}") + if last_date > date_string: + raise HandledException(f"{prefix} out-of-order-date") + last_date = date_string + try: + description = toks[1] + except IndexError: + raise HandledException(f"{prefix} bad description: {description}") + inside_booking = True + booking_lines += [non_comment] + continue + # otherwise, read as transfer data + toks = non_comment.split() # ignore specification's allowance of single spaces in names + if len(toks) > 3: + raise HandledException(f"{prefix} too many booking line tokens: {toks}") + amount, currency = None, None + account_name = toks[0] + if account_name[0] == '[' and account_name[-1] == ']': + # ignore specification's differentiation of "virtual" accounts + account_name = account_name[1:-1] + decimal_chars = ".-0123456789" + if len(toks) == 3: + i_currency = 1 + try: + amount = decimal.Decimal(toks[1]) + i_currency = 2 + except decimal.InvalidOperation: + try: + amount = decimal.Decimal(toks[2]) + except decimal.InvalidOperation: + raise HandledException(f"{prefix} no decimal number in: {toks[1:]}") + currency = toks[i_currency] + if currency[0] in decimal_chars: + raise HandledException(f"{prefix} currency starts with int, dot, or minus: {currency}") + elif len(toks) == 2: + value = toks[1] + inside_amount = False + inside_currency = False + amount_string = "" + currency = "" + dots_counted = 0 + for i, c in enumerate(value): + if i == 0: + if c in decimal_chars: + inside_amount = True + else: + inside_currency = True + if inside_currency: + if c in decimal_chars and len(amount_string) == 0: + inside_currency = False + inside_amount = True + else: + currency += c + continue + if inside_amount: + if c not in decimal_chars: + if len(currency) > 0: + raise HandledException(f"{prefix} amount has non-decimal chars: {value}") + inside_currency = True + inside_amount = False + currency += c + continue + if c == '-' and len(amount_string) > 1: + raise HandledException(f"{prefix} amount has non-start '-': {value}") + if c == '.': + if dots_counted > 1: + raise HandledException(f"{prefix} amount has multiple dots: {value}") + dots_counted += 1 + amount_string += c + if len(currency) == 0: + raise HandledException(f"{prefix} currency missing: {value}") + if len(amount_string) > 0: + amount = decimal.Decimal(amount_string) + booking_lines += [(account_name, amount, currency)] + if inside_booking: + raise HandledException(f"{prefix} last booking unfinished") + return bookings, comments + + class Booking: - def __init__(self, date_string, description, booking_lines, start_line): + def __init__(self, date_string, description, booking_lines, start_line, process=True): self.date_string = date_string - self.description = description - self.lines = booking_lines + self.description = description + self.lines = booking_lines self.start_line = start_line - self.validate_booking_lines() - self.account_changes = self.parse_booking_lines_to_account_changes() + if process: + self.validate_booking_lines() + self.sink = {} + self.account_changes = self.parse_booking_lines_to_account_changes() def validate_booking_lines(self): prefix = f"booking at line {self.start_line}" sums = {} empty_values = 0 - for line in self.lines: - if line == '': + for line in self.lines[1:]: + if line == '': continue _, amount, currency = line if amount is None: @@ -51,12 +221,12 @@ class Booking: if empty_values == 0: for k, v in sums.items(): if v != 0: - raise HandledException(f"{prefix} does not sum up to zero") + raise HandledException(f"{prefix} does not add up to zero / {k} {v}") else: sinkable = False for k, v in sums.items(): if v != 0: - sinkable = True + sinkable = True if not sinkable: raise HandledException(f"{prefix} has empty value that cannot be filled") @@ -64,8 +234,8 @@ class Booking: account_changes = {} debt = {} sink_account = None - for line in self.lines: - if line == '': + for line in self.lines[1:]: + if line == '': continue account, amount, currency = line if amount is None: @@ -79,207 +249,417 @@ class Booking: if sink_account: for currency, amount in debt.items(): apply_booking_to_account_balances(account_changes, sink_account, currency, -amount) + self.sink[currency] = -amount return account_changes class Database: - def __init__(self, load_from_file=True): - import os + def __init__(self): db_name = "_ledger" self.db_file = db_name + ".json" self.lock_file = db_name+ ".lock" self.bookings = [] self.comments = [] - if load_from_file and os.path.exists(self.db_file): + self.real_lines = [] + if os.path.exists(self.db_file): with open(self.db_file, "r") as f: - self.parse_lines(f.readlines()) + self.real_lines += [l.rstrip() for l in f.readlines()] + ret = parse_lines(self.real_lines) + self.bookings += ret[0] + self.comments += ret[1] - def parse_lines(self, lines): - import datetime - import decimal - inside_booking = False - date_string, description = None, None - booking_lines = [] - start_line = 0 - for i, line in enumerate(lines): - prefix = f"line {i}" - # we start with the case of an utterly empty line - self.comments += [""] - stripped_line = line.rstrip() - if stripped_line == '': - if inside_booking: - # assume we finished a booking, finalize, and commit to DB - if len(booking_lines) < 2: - raise HandledException(f"{prefix} booking ends to early") - booking = Booking(date_string, description, booking_lines, start_line) - self.bookings += [booking] - # expect new booking to follow so re-zeroall booking data - inside_booking = False - date_string, description = None, None - booking_lines = [] - continue - # if non-empty line, first get comment if any, and commit to DB - split_by_comment = stripped_line.split(sep=";", maxsplit=1) - if len(split_by_comment) == 2: - self.comments[i] = split_by_comment[1] - # 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 - non_comment = split_by_comment[0].rstrip() - if non_comment.rstrip() == '': - if inside_booking: - booking_lines += [''] - continue - # if we're starting a booking, parse by first-line pattern - if not inside_booking: - start_line = i - toks = non_comment.split(maxsplit=1) - date_string = toks[0] - try: - datetime.datetime.strptime(date_string, '%Y-%m-%d') - except ValueError: - raise HandledException(f"{prefix} bad date string: {date_string}") - try: - description = toks[1] - except IndexError: - raise HandledException(f"{prefix} bad description: {description}") - inside_booking = True - continue - # otherwise, read as transfer data - toks = non_comment.split() # ignore specification's allowance of single spaces in names - if len(toks) > 3: - raise HandledException(f"{prefix} too many booking line tokens: {toks}") - amount, currency = None, None - account_name = toks[0] - if account_name[0] == '[' and account_name[-1] == ']': - # ignore specification's differentiation of "virtual" accounts - account_name = account_name[1:-1] - decimal_chars = ".-0123456789" - if len(toks) == 3: - i_currency = 1 - try: - amount = decimal.Decimal(toks[1]) - i_currency = 2 - except decimal.InvalidOperation: - try: - amount = decimal.Decimal(toks[2]) - except decimal.InvalidOperation: - raise HandledException(f"{prefix} no decimal number in: {toks[1:]}") - currency = toks[i_currency] - if currency[0] in decimal_chars: - raise HandledException(f"{prefix} currency starts with int, dot, or minus: {currency}") - elif len(toks) == 2: - value = toks[1] - inside_amount = False - inside_currency = False - amount_string = "" - currency = "" - dots_counted = 0 - for i, c in enumerate(value): - if i == 0: - if c in decimal_chars: - inside_amount = True - else: - inside_currency = True - if inside_currency: - if c in decimal_chars and len(amount_string) == 0: - inside_currency = False - inside_amount = True - else: - currency += c - continue - if inside_amount: - if c not in decimal_chars: - if len(currency) > 0: - raise HandledException(f"{prefix} amount has non-decimal chars: {value}") - inside_currency = True - inside_amount = False - currency += c - continue - if c == '-' and len(amount_string) > 1: - raise HandledException(f"{prefix} amount has non-start '-': {value}") - if c == '.': - if dots_counted > 1: - raise HandledException(f"{prefix} amount has multiple dots: {value}") - dots_counted += 1 - amount_string += c - if len(amount_string) == 0: - raise HandledException(f"{prefix} amount missing: {value}") - if len(currency) == 0: - raise HandledException(f"{prefix} currency missing: {value}") - amount = decimal.Decimal(amount_string) - booking_lines += [(account_name, amount, currency)] + def get_lines(self, start, end): + return self.real_lines[start:end] - def ledger_as_html(self): - lines = [] - for comment in self.comments: - lines += [f"; {comment}" if comment != '' else ''] - for booking in self.bookings: - i = booking.start_line - suffix = f" {lines[i]}" if len(lines[i]) > 0 else "" - lines[i] = f"{booking.date_string} {booking.description}{suffix}" - for booking_line in booking.lines: - i += 1 - if booking_line == '': - continue - suffix = f" {lines[i]}" if len(lines[i]) > 0 else "" - value = f" {booking_line[1]} {booking_line[2]}" if booking_line[1] else "" - lines[i] = f"{booking_line[0]}{value}{suffix}" - content = "\n".join(lines) - return f"
{content}" - - def balance_as_html(self): - account_sums = {} - for booking in self.bookings: - for account, changes in booking.account_changes.items(): - for currency, amount in changes.items(): - apply_booking_to_account_balances(account_sums, account, currency, amount) - account_tree = {} - def collect_branches(account_name, path): - node = account_tree - path_copy = path[:] - while len(path_copy) > 0: - step = path_copy.pop(0) - node = node[step] - toks = account_name.split(":", maxsplit=1) - parent = toks[0] - if parent in node.keys(): - child = node[parent] + def write_db(self, text, mode='w'): + import shutil + if os.path.exists(self.lock_file): + raise HandledException('Sorry, lock file!') + f = open(self.lock_file, 'w+') + f.close() + + # always back up most recent to .bak + bakpath = f'{self.db_file}.bak' + shutil.copy(self.db_file, bakpath) + + # collect modification times of numbered .bak files + bak_prefix = f'{bakpath}.' + backup_dates = [] + i = 0 + bak_as = f'{bak_prefix}{i}' + while os.path.exists(bak_as): + mod_time = os.path.getmtime(bak_as) + backup_dates += [str(datetime.datetime.fromtimestamp(mod_time))] + i += 1 + bak_as = f'{bak_prefix}{i}' + + # collect what numbered .bak files to save: + # shrink datetime string right to left character by character, + # on each step add the oldest file whose mtime still fits the pattern + # (privilege older files to keep existing longer) + to_save = [] + datetime_len = 19 + now = str(datetime.datetime.now())[:datetime_len] + while datetime_len > 2: + # assume backup_dates starts with oldest dates + for i, date in enumerate(backup_dates): + if date[:datetime_len] == now: + if i not in to_save: + to_save += [i] + break + datetime_len -= 1 + now = now[:datetime_len] + + # remove redundant backup files + j = 0 + for i in to_save: + if i != j: + source = f'{bak_prefix}{i}' + target = f'{bak_prefix}{j}' + shutil.move(source, target) + j += 1 + for i in range(j, len(backup_dates)): + try: + os.remove(f'{bak_prefix}{i}') + except FileNotFoundError: + pass + + # put second backup copy of current state at end of bak list + shutil.copy(self.db_file, f'{bak_prefix}{j}') + with open(self.db_file, mode) as f: + f.write(text); + os.remove(self.lock_file) + + def replace(self, start, end, lines): + total_lines = self.real_lines[:start] + lines + self.real_lines[end:] + text = '\n'.join(total_lines) + self.write_db(text) + + def append(self, lines): + text = '\n\n' + '\n'.join(lines) + '\n\n' + self.write_db(text, 'a') + + def get_nth_for_booking_of_start_line(self, start_line): + nth = 0 + for b in self.bookings: + if b.start_line == start_line: + break + nth += 1 + return nth + + def add_taxes(self, lines, finish=False): + ret = [] + bookings, _ = parse_lines(lines) + date = bookings[0].date_string + acc_kk_add = 'Reserves:KrankenkassenBeitragsWachstum' + acc_kk_minimum = 'Reserves:Month:KrankenkassenDefaultBeitrag' + acc_kk = 'Expenses:KrankenKasse' + acc_est = 'Reserves:Einkommenssteuer' + acc_assets = 'Assets' + acc_buffer = 'Reserves:NeuAnfangsPuffer:Ausgaben' + last_monthbreak_assets = 0 + last_monthbreak_est = 0 + last_monthbreak_kk_minimum = 0 + last_monthbreak_kk_add = 0 + buffer_expenses = 0 + kk_expenses = 0 + est_expenses = 0 + months_passed = -int(finish) + for b in self.bookings: + if date == b.date_string: + break + acc_keys = b.account_changes.keys() + if acc_buffer in acc_keys: + buffer_expenses -= b.account_changes[acc_buffer]['â¬'] + if acc_kk_add in acc_keys: + kk_expenses += b.account_changes[acc_kk_add]['â¬'] + if acc_kk in acc_keys: + kk_expenses += b.account_changes[acc_kk]['â¬'] + if acc_est in acc_keys: + est_expenses += b.account_changes[acc_est]['â¬'] + if acc_kk_add in acc_keys and acc_kk_minimum in acc_keys: + months_passed += 1 + if finish: + last_monthbreak_kk_add = b.account_changes[acc_kk_add]['â¬'] + last_monthbreak_est = b.account_changes[acc_est]['â¬'] + last_monthbreak_kk_minimum = b.account_changes[acc_kk_minimum]['â¬'] + last_monthbreak_assets = b.account_changes[acc_buffer]['â¬'] + old_needed_income_before_anything = - last_monthbreak_assets - last_monthbreak_kk_add - last_monthbreak_kk_minimum - last_monthbreak_est + if finish: + ret += [f' {acc_est} {-last_monthbreak_est}⬠; for old assumption of needed income: {old_needed_income_before_anything}â¬'] + _, account_sums = bookings_to_account_tree(bookings) + expenses_so_far = -1 * account_sums[acc_assets]['â¬'] + old_needed_income_before_anything + needed_income_before_kk = expenses_so_far + ESt_this_month = 0 + left_over = needed_income_before_kk - ESt_this_month + too_low = 0 + too_high = 2 * needed_income_before_kk + E0 = decimal.Decimal(10908) + E1 = decimal.Decimal(15999) + E2 = decimal.Decimal(62809) + E3 = decimal.Decimal(277825) + while True: + zvE = buffer_expenses - kk_expenses + (12 - months_passed) * needed_income_before_kk + if finish: + zvE += last_monthbreak_assets + last_monthbreak_kk_add + last_monthbreak_kk_minimum + if zvE < E0: + ESt = decimal.Decimal(0) + elif zvE < E1: + y = (zvE - E0)/10000 + ESt = (decimal.Decimal(979.18) * y + 1400) * y + elif zvE < E2: + y = (zvE - E1)/10000 + ESt = (decimal.Decimal(192.59) * y + 2397) * y + decimal.Decimal(966.53) + elif zvE < E3: + ESt = decimal.Decimal(0.42) * (zvE - decimal.Decimal(62809)) + decimal.Decimal(16405.54) else: - child = {} - node[parent] = child - if len(toks) == 2: - k, v = collect_branches(toks[1], path + [parent]) - if k not in child.keys(): - child[k] = v + ESt = decimal.Decimal(0.45) * (zvE - decimal.Decimal(277825)) + decimal.Decimal(106713.52) + ESt_this_month = (ESt + last_monthbreak_est - est_expenses) / (12 - months_passed) + left_over = needed_income_before_kk - ESt_this_month + if abs(left_over - expenses_so_far) < 0.001: + break + elif left_over < expenses_so_far: + too_low = needed_income_before_kk + elif left_over > expenses_so_far: + too_high = needed_income_before_kk + needed_income_before_kk = too_low + (too_high - too_low)/2 + ESt_this_month = ESt_this_month.quantize(decimal.Decimal('0.00')) + ret += [f' {acc_est} {ESt_this_month}⬠; expenses so far: {expenses_so_far:.2f}â¬; zvE: {zvE:.2f}â¬; ESt total: {ESt:.2f}â¬; needed before Krankenkasse: {needed_income_before_kk:.2f}â¬'] + kk_minimum_income = 1131.67 + if date < '2023-02-01': + kk_minimum_income = decimal.Decimal(1096.67) + kk_factor = decimal.Decimal(0.189) + kk_minimum_tax = decimal.Decimal(207.27).quantize(decimal.Decimal('0.00')) + elif date < '2023-08-01': + kk_factor = decimal.Decimal(0.191) + kk_minimum_tax = decimal.Decimal(216.15).quantize(decimal.Decimal('0.00')) + else: + kk_factor = decimal.Decimal(0.197) + kk_minimum_tax = decimal.Decimal(222.94).quantize(decimal.Decimal('0.00')) + kk_add_so_far = account_sums[acc_kk_add]['â¬'] if acc_kk_add in account_sums.keys() else 0 + kk_add = needed_income_before_kk / (1 - kk_factor) - needed_income_before_kk - kk_minimum_tax + hit_kk_minimum_income_limit = False + if kk_add_so_far + kk_add < 0: + hit_kk_minimum_income_limit = True + kk_add_uncorrect = kk_add + kk_add = -(kk_add + kk_add_so_far) + kk_add = decimal.Decimal(kk_add).quantize(decimal.Decimal('0.00')) + if finish: + ret += [f' {acc_kk_add} {-last_monthbreak_kk_add}⬠; for old assumption of needed income'] + else: + ret += [f' {acc_kk_minimum} {kk_minimum_tax}⬠; assumed minimum income {kk_minimum_income:.2f}⬠* {kk_factor:.3f}'] + if hit_kk_minimum_income_limit: + ret += [f' {acc_kk_add} {kk_add}⬠; {needed_income_before_kk:.2f}⬠/ (1 - {kk_factor:.3f}) - {needed_income_before_kk:.2f}⬠- {kk_minimum_tax}⬠= {kk_add_uncorrect:.2f}⬠would reduce current {acc_kk_dd} ({kk_add_so_far:.2f}â¬) below 0'] + else: + ret += [f' {acc_kk_add} {kk_add}⬠; {needed_income_before_kk:.2f}⬠/ (1 - {kk_factor:.3f}) - {needed_income_before_kk:.2f}⬠- {kk_minimum_tax}â¬'] + diff = - last_monthbreak_est + ESt_this_month - last_monthbreak_kk_add + kk_add + if not finish: + diff += kk_minimum_tax + final_minus = expenses_so_far - old_needed_income_before_anything + diff + ret += [f' {acc_assets} {-diff} â¬'] + ret += [f' {acc_assets} {final_minus} â¬'] + year_needed = buffer_expenses + final_minus + (12 - months_passed - 1) * final_minus + if finish: + ret += [f' {acc_buffer} {-final_minus} â¬'] + else: + ret += [f' {acc_buffer} {-final_minus} ⬠; assume as to earn in year: {acc_buffer} + {12 - months_passed - 1} * this = {year_needed}'] + return ret + + +class MyServer(BaseHTTPRequestHandler): + header = """ + + + +ledger +balance +add free +add structured +
{{date}} {{desc}} {{head_comment|e}}
+
+
{{l.acc|e}} | {{l.money|e}} | {{l.comment|e}} |
{{l.comment|e}} |
{content}" + return f"
{content}" + def ledger_as_html(self, db): + single_c_tmpl = jinja2.Template('{{c|e}}