from http.server import BaseHTTPRequestHandler, HTTPServer
import sys
import os
+import html
+from urllib.parse import parse_qs, urlparse
hostName = "localhost"
serverPort = 8082
account_sums[account][currency] += amount
+def add_taxes(lines):
+ import decimal
+ bookings, _ = parse_lines(lines)
+ _, account_sums = bookings_to_account_tree(bookings)
+ expenses_so_far = -1 * account_sums['Assets']['€']
+ needed_income_before_krankenkasse = expenses_so_far
+ ESt_this_month = 0
+ left_over = needed_income_before_krankenkasse - ESt_this_month
+ too_low = 0
+ too_high = 2 * needed_income_before_krankenkasse
+ E0 = 10908
+ E1 = 15999
+ E2 = 62809
+ E3 = 277825
+ while True:
+ zvE = 12 * needed_income_before_krankenkasse
+ 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:
+ ESt = decimal.Decimal(0.45) * (zvE - decimal.Decimal(277825)) + decimal.Decimal(106713.52)
+ ESt_this_month = ESt / 12
+ left_over = needed_income_before_krankenkasse - ESt_this_month
+ if abs(left_over - expenses_so_far) < 0.1:
+ break
+ elif left_over < expenses_so_far:
+ too_low = needed_income_before_krankenkasse
+ elif left_over > expenses_so_far:
+ too_high = needed_income_before_krankenkasse
+ needed_income_before_krankenkasse = too_low + (too_high - too_low)/2
+ line_income_tax = f' Reserves:Einkommenssteuer {ESt_this_month:.2f}€ ; expenses so far: {expenses_so_far:.2f}€; zvE: {zvE:.2f}€; ESt total: {ESt:.2f}€; needed before Krankenkasse: {needed_income_before_krankenkasse:.2f}€'
+ kk_minimum_income = 1096.67
+ kk_factor = decimal.Decimal(0.189)
+ kk_minimum_tax = decimal.Decimal(207.27)
+ # kk_minimum_income = 1131.67
+ # kk_factor = decimal.Decimal(0.191)
+ # kk_minimum_tax = decimal.Decimal(216.15)
+ # kk_factor = decimal.Decimal(0.197)
+ # kk_minimum_tax = decimal.Decimal(222.94)
+ kk_add = max(0, kk_factor * needed_income_before_krankenkasse - kk_minimum_tax)
+ line_kk_minimum = f' Reserves:Month:Krankenkassendefaultbeitrag {kk_minimum_tax:.2f}€ ; assed minimum income {kk_minimum_income:.2f}€ * {kk_factor:.3f}'
+ line_kk_add = f' Reserves:Month:Krankenkassenbeitragswachstum {kk_add:.2f}€ ; max(0, {kk_factor:.3f} * {needed_income_before_krankenkasse:.2f}€ - {kk_minimum_tax:.2f}€)'
+ final_minus = expenses_so_far + ESt_this_month + kk_minimum_tax + kk_add
+ line_finish = f' Assets -{final_minus:.2f}€'
+ return [line_income_tax, line_kk_minimum, line_kk_add, line_finish]
+
+
+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):
import datetime
import decimal
start_line = 0
bookings = []
comments = []
+ lines = lines.copy() + [''] # to ensure a booking-ending last line
for i, line in enumerate(lines):
prefix = f"line {i}"
# we start with the case of an utterly empty line
# 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]
+ 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() == '':
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
prefix = f"booking at line {self.start_line}"
sums = {}
empty_values = 0
- for line in self.lines:
+ for line in self.lines[1:]:
if line == '':
continue
_, amount, currency = line
account_changes = {}
debt = {}
sink_account = None
- for line in self.lines:
+ for line in self.lines[1:]:
if line == '':
continue
account, amount, currency = line
class Database:
- def __init__(self, load_from_file=True):
+ 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:
- ret = parse_lines(f.readlines())
- self.bookings += ret[0]
- self.comments += ret[1]
+ self.real_lines += f.readlines()
+ ret = parse_lines(self.real_lines)
+ self.bookings += ret[0]
+ self.comments += ret[1]
+
+ def get_lines(self, start, end):
+ return self.real_lines[start:end]
+
+ def replace(self, start, end, lines):
+ import shutil
+ if os.path.exists(self.lock_file):
+ raise HandledException('Sorry, lock file!')
+ if os.path.exists(self.db_file):
+ shutil.copy(self.db_file, self.db_file + ".bak")
+ f = open(self.lock_file, 'w+')
+ f.close()
+ text = ''.join(self.real_lines[:start]) + '\n'.join(lines) + ''.join(self.real_lines[end:])
+ with open(self.db_file, 'w') as f:
+ f.write(text);
+ os.remove(self.lock_file)
def append(self, lines):
import shutil
class MyServer(BaseHTTPRequestHandler):
- header = '<html><meta charset="UTF-8"><body><a href="/ledger">ledger</a> <a href="/balance">balance</a> <a href="/add">add</a><hr />'
- footer = '</body><html>'
+ header = """<html>
+<meta charset="UTF-8">
+<style>
+body { color: #000000; }
+table { margin-bottom: 2em; }
+th, td { text-align: left }
+input[type=number] { text-align: right; font-family: monospace; }
+.money { font-family: monospace; text-align: right; }
+.comment { font-style: italic; color: #777777; }
+.full_line_comment { display: block; white-space: nowrap; width: 0; }
+</style>
+<body>
+<a href="/ledger">ledger</a>
+<a href="/balance">balance</a>
+<a href="/add_free">add free</a>
+<a href="/add_structured">add structured</a>
+<hr />
+"""
+ footer = "</body>\n<html>"
def do_POST(self):
- from urllib.parse import parse_qs
+ db = Database()
length = int(self.headers['content-length'])
postvars = parse_qs(self.rfile.read(length).decode(), keep_blank_values=1)
- lines = postvars['booking'][0].splitlines()
+ parsed_url = urlparse(self.path)
+ lines = []
+ add_empty_line = None
+ if '/add_structured' == parsed_url.path and not 'revert' in postvars.keys():
+ date = postvars['date'][0]
+ description = postvars['description'][0]
+ start_comment = postvars['line_0_comment'][0]
+ lines = [f'{date} {description} ; {start_comment}']
+ if 'line_0_add' in postvars.keys():
+ add_empty_line = 0
+ i = j = 1
+ while f'line_{i}_comment' in postvars.keys():
+ if f'line_{i}_delete' in postvars.keys():
+ i += 1
+ continue
+ if f'line_{i}_add' in postvars.keys():
+ add_empty_line = j
+ account = postvars[f'line_{i}_account'][0]
+ amount = postvars[f'line_{i}_amount'][0]
+ currency = postvars[f'line_{i}_currency'][0]
+ comment = postvars[f'line_{i}_comment'][0]
+ i += 1
+ new_main = f'{account} {amount} {currency}'
+ if '' == new_main.rstrip() == comment.rstrip(): # don't write empty lines
+ continue
+ j += 1
+ new_line = new_main
+ if comment.rstrip() != '':
+ new_line += f' ; {comment}'
+ lines += [new_line]
+ if 'add_taxes' in postvars.keys():
+ lines += add_taxes(lines)
+ elif '/add_free' == parsed_url.path:
+ lines = postvars['booking'][0].splitlines()
+ lines += [''] # to ensure Booking-ending last line
+ start = int(postvars['start'][0])
+ end = int(postvars['end'][0])
try:
- bookings, comments = parse_lines(lines)
- db.append(lines)
- self.send_response(200)
- self.end_headers()
- page = f"{self.header}Success!{self.footer}"
- self.wfile.write(bytes(page, "utf-8"))
+ _, _ = parse_lines(lines)
+ if 'save' in postvars.keys():
+ if start == end == 0:
+ db.append(lines)
+ else:
+ db.replace(start, end, lines)
+ self.send_response(301)
+ redir_url = '/'
+ self.send_header('Location', redir_url)
+ self.end_headers()
+ else:
+ page = self.header + self.add_structured(db, start, end, temp_lines=lines, add_empty_line=add_empty_line) + self.footer
+ self.send_response(200)
+ self.send_header("Content-type", "text/html")
+ self.end_headers()
+ self.wfile.write(bytes(page, "utf-8"))
except HandledException as e:
self.send_response(400)
+ self.send_header("Content-type", "text/html")
self.end_headers()
- page = f"{self.header}{e}{self.footer}"
+ page = f'{self.header}ERROR: {e}{self.footer}'
self.wfile.write(bytes(page, "utf-8"))
def do_GET(self):
self.send_header("Content-type", "text/html")
self.end_headers()
db = Database()
+ parsed_url = urlparse(self.path)
page = self.header + ''
- if self.path == '/balance':
+ params = parse_qs(parsed_url.query)
+ start = int(params.get('start', ['0'])[0])
+ end = int(params.get('end', ['0'])[0])
+ # bonus_lines = int(params.get('bonus_lines', ['0'])[0])
+ if parsed_url.path == '/balance':
page += self.balance_as_html(db)
- elif self.path == '/add':
- page += self.add()
+ elif parsed_url.path == '/add_free':
+ page += self.add_free(db, start, end)
+ elif parsed_url.path == '/add_structured':
+ page += self.add_structured(db, start, end)
+ elif parsed_url.path == '/copy_free':
+ page += self.add_free(db, start, end, copy=True)
+ elif parsed_url.path == '/copy_structured':
+ page += self.add_structured(db, start, end, copy=True)
else:
page += self.ledger_as_html(db)
page += self.footer
self.wfile.write(bytes(page, "utf-8"))
def balance_as_html(self, db):
- account_sums = {}
- for booking in db.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])
lines = []
+ account_tree, account_sums = bookings_to_account_tree(db.bookings)
def print_subtree(lines, indent, node, subtree, path):
line = f"{indent}{node}"
n_tabs = 5 - (len(line) // 8)
def ledger_as_html(self, db):
lines = []
for comment in db.comments:
- lines += [f"; {comment}" if comment != '' else '']
+ lines += [f'<span class="comment">{comment}</span>' if comment != '' else '']
for booking in db.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:
+ booking_end = booking.start_line + len(booking.lines)
+ lines[i] = f"""<p>{booking.date_string} {booking.description} {lines[i]}
+[edit: <a href="/add_structured?start={booking.start_line}&end={booking_end}">structured</a>
+/ <a href="/add_free?start={booking.start_line}&end={booking_end}">free</a>
+| copy:<a href="/copy_structured?start={booking.start_line}&end={booking_end}">structured</a>
+/ <a href="/copy_free?start={booking.start_line}&end={booking_end}">free</a>]
+<table>"""
+ for booking_line in booking.lines[1:]:
i += 1
if booking_line == '':
+ lines[i] = f'<tr><td><div class="full_line_comment">{lines[i]}</div></td></tr>'
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"<pre>{content}</pre>"
+ comment = f' {lines[i]}' if len(lines[i]) > 0 else ''
+ money = ''
+ if booking_line[1]:
+ money = f'{booking_line[1]} {booking_line[2]}'
+ account = booking_line[0]
+ lines[i] = f'<tr><td>{booking_line[0]}</td><td class="money">{money}</td><td>{comment}</td></tr>'
+ lines[i] = lines[i] + "\n" + '</table></p>'
+ return '\n'.join(lines)
+
+ def header_add_form(self, action):
+ return f"<form method=\"POST\" action=\"/{action}\">\n"
- def add(self):
- return '<form method="POST" action="/"><textarea name="booking" rows="8" cols="80"></textarea><input type="submit"></form>'
+ def footer_add_form(self, start, end, copy):
+ if copy:
+ start = end = 0
+ return f"""
+<input type="hidden" name="start" value={start} />
+<input type="hidden" name="end" value={end} />
+<input type="submit" name="save" value="save!">
+</form>"""
+
+ def textarea(self, name, lines, min_rows=1, min_cols=20):
+ safe_content = html.escape(''.join(lines))
+ n_rows = max(min_rows, len(lines))
+ n_cols = min_cols
+ for line in lines:
+ n_cols = len(line) if len(line) > n_cols else n_cols
+ return f'<textarea name="{name}" rows={n_rows} cols={n_cols}>{safe_content}</textarea>'
+
+ def add_free(self, db, start=0, end=0, copy=False):
+ lines = db.get_lines(start, end)
+ return f'{self.header_add_form("add_free")}{self.textarea("booking",lines,10,80)}{self.footer_add_form(start, end, copy)}'
+
+ def add_structured(self, db, start=0, end=0, copy=False, temp_lines=[], add_empty_line=None):
+ import datetime
+ lines = temp_lines if len(''.join(temp_lines)) > 0 else db.get_lines(start, end)
+ bookings, comments = parse_lines(lines)
+ if len(bookings) > 1:
+ raise HandledException('can only edit single Booking')
+ if add_empty_line is not None:
+ comments = comments[:add_empty_line+1] + [''] + comments[add_empty_line+1:]
+ booking = bookings[0]
+ booking.lines = booking.lines[:add_empty_line+1] + [''] + booking.lines[add_empty_line+1:]
+ def inpu(name, val="", datalist="", input_type='text', size=-1):
+ val = val if val is not None else ""
+ safe_val = html.escape(str(val))
+ datalist_string = '' if datalist == '' else f'list="{datalist}"'
+ number_step = '' if input_type != 'number' else ' step=0.01'
+ size_string = '' if size < 0 else f' size={size}'
+ return f'<input type="{input_type}"{number_step} name="{name}"{size_string} value="{safe_val}" {datalist_string}/>'
+ input_lines = inpu('check', 'check', '', 'submit') +\
+ inpu('revert', 'revert', '', 'submit') +\
+ inpu('add_taxes', 'add taxes', '', 'submit') +\
+ '<br />'
+ today = str(datetime.datetime.now())[:10]
+ if len(bookings) == 0:
+ input_lines += f'{inpu("date", today, size=9)} {inpu("description", "", "descriptions")} ; {inpu("line_0_comment")} {inpu(f"line_0_add", "[+]", "", "submit")}<br />'
+ for i in range(1, 3):
+ input_lines += f'{inpu(f"line_{i}_account", "", "accounts", size=40)} {inpu(f"line_{i}_amount", "", "", "number", size=10)} {inpu(f"line_{i}_currency", "", "currencies", size=3)} ; {self.textarea(f"line_{i}_comment", "")} {inpu(f"line_{i}_delete", "[x]", "", "submit")} {inpu(f"line_{i}_add", "[+]", "", "submit")}<br />'
+ else:
+ booking = bookings[0]
+ last_line = len(comments)
+ date_string = today if copy else booking.date_string
+ input_lines += f'{inpu("date", date_string, size=9)} {inpu("description", booking.description, "descriptions")} ; {self.textarea("line_0_comment", [comments[0]])} {inpu(f"line_0_add", "[+]", "", "submit")}<br />'
+ for i in range(1, len(comments)):
+ account = amount = currency = ''
+ if i < len(booking.lines) and booking.lines[i] != '':
+ account = booking.lines[i][0]
+ amount = booking.lines[i][1]
+ currency = booking.lines[i][2]
+ input_lines += f'{inpu(f"line_{i}_account", account, "accounts", size=40)} {inpu(f"line_{i}_amount", amount, "", "number", size=10)} {inpu(f"line_{i}_currency", currency, "currencies", size=3)} ; {self.textarea(f"line_{i}_comment", [comments[i]])} {inpu(f"line_{i}_delete", "[x]", "", "submit")} {inpu(f"line_{i}_add", "[+]", "", "submit")}<br />'
+ datalist_sets = {'descriptions': set(), 'accounts': set(), 'currencies': set()}
+ for b in db.bookings:
+ datalist_sets['descriptions'].add(b.description)
+ for account, moneys in b.account_changes.items():
+ datalist_sets['accounts'].add(account)
+ for currency in moneys.keys():
+ datalist_sets['currencies'].add(currency)
+ def build_datalist(name):
+ datalist = f'<datalist id="{name}">' + "\n"
+ for item in datalist_sets[name]:
+ safe_item = html.escape(item)
+ datalist += f'<option value="{safe_item}">{safe_item}</option>' + "\n"
+ return f"{datalist}</datalist>\n"
+ datalists = build_datalist('descriptions')
+ datalists += build_datalist('accounts')
+ datalists += build_datalist('currencies')
+ return f'{self.header_add_form("add_structured")}{input_lines}{datalists}{self.footer_add_form(start, end, copy)}'
-db = Database()
-if __name__ == "__main__":
+if __name__ == "__main__":
webServer = HTTPServer((hostName, serverPort), MyServer)
print(f"Server started http://{hostName}:{serverPort}")
try:
projects / misc / blobdiff