Files
certain/backend/app/routers/dashboard.py
T
GuidoandClaude Opus 4.8 e10ccdf185 feat: Dashboard-Karte „Ausgaben-Anteile"
Zeigt für den laufenden Budget-Monat, wie sich die tatsächlichen Ausgaben
prozentual auf die Kategorien verteilen – absteigend sortiert, mit Balken in der
Kategoriefarbe, Prozentwert und Betrag.

Anders als der Budget-Donut hängt sie nicht am geplanten Budget: Sie zeigt reine
Ist-Ausgaben, auch wenn für den Monat nichts geplant wurde. Umschaltbar zwischen
Kategorien (Standard) und Gruppen.

Die Anteile rechnet die Oberfläche aus Betrag und Summe – gerundete Prozente vom
Server addierten sich sonst nicht auf 100 %. Wird die Karte schmal, gibt zuerst
der Betrag nach; ohne Kategorienamen sagt die Zeile nichts mehr aus.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-21 09:30:14 +02:00

329 lines
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"""Dashboard: pro Nutzer gespeichertes Karten-Layout und die Datenendpunkte je Karte."""
import json
from collections import defaultdict
from datetime import date, timedelta
from fastapi import APIRouter, Body, Depends, Query
from sqlalchemy.orm import Session
from ..database import get_db
from ..deps import get_current_user
from ..models import (
Account,
Category,
CategoryGroup,
CategoryKind,
DashboardLayout,
Transaction,
TxnType,
User,
)
from ..services import balances, budget, currency
from .accounts import base_currency
from .settings import BUDGET_START_DAY_KEY, get_user_setting
router = APIRouter(prefix="/dashboard", tags=["dashboard"])
# Sinnvolles Standard-Layout (12-Spalten-Raster). Eine Karte je Typ.
DEFAULT_LAYOUT = [
{"i": "account-balances", "type": "account-balances", "x": 0, "y": 0, "w": 4, "h": 5},
{"i": "budget-donut", "type": "budget-donut", "x": 4, "y": 0, "w": 4, "h": 5},
{"i": "income-expense", "type": "income-expense", "x": 8, "y": 0, "w": 4, "h": 2},
{"i": "budget-progress", "type": "budget-progress", "x": 8, "y": 2, "w": 4, "h": 3},
{"i": "net-worth", "type": "net-worth", "x": 0, "y": 5, "w": 8, "h": 4},
{"i": "recent-transactions", "type": "recent-transactions", "x": 8, "y": 5, "w": 4, "h": 4},
]
def _start_day(db: Session, user: User) -> int:
try:
return max(1, min(31, int(get_user_setting(db, user, BUDGET_START_DAY_KEY) or "1")))
except ValueError:
return 1
def _label(db: Session, user: User) -> str:
return budget.current_label(_start_day(db, user))
# --- Layout ----------------------------------------------------------------
@router.get("/layout")
def get_layout(db: Session = Depends(get_db), user: User = Depends(get_current_user)) -> dict:
row = db.query(DashboardLayout).filter(DashboardLayout.owner_id == user.id).first()
if row is None:
return {"layout": DEFAULT_LAYOUT, "default": True}
try:
layout = json.loads(row.layout)
except ValueError:
layout = DEFAULT_LAYOUT
return {"layout": layout, "default": False}
@router.put("/layout")
def save_layout(
layout: list = Body(...),
db: Session = Depends(get_db),
user: User = Depends(get_current_user),
) -> dict:
row = db.query(DashboardLayout).filter(DashboardLayout.owner_id == user.id).first()
if row is None:
row = DashboardLayout(owner_id=user.id, layout=json.dumps(layout))
db.add(row)
else:
row.layout = json.dumps(layout)
db.commit()
return {"layout": layout, "default": False}
@router.delete("/layout")
def reset_layout(db: Session = Depends(get_db), user: User = Depends(get_current_user)) -> dict:
row = db.query(DashboardLayout).filter(DashboardLayout.owner_id == user.id).first()
if row is not None:
db.delete(row)
db.commit()
return {"layout": DEFAULT_LAYOUT, "default": True}
# --- Kartendaten -----------------------------------------------------------
def _expense_groups(db: Session, user: User) -> list[CategoryGroup]:
return (
db.query(CategoryGroup)
.filter(CategoryGroup.owner_id == user.id, CategoryGroup.kind == CategoryKind.expense)
.order_by(CategoryGroup.position, CategoryGroup.name)
.all()
)
def _units(groups: list[CategoryGroup], by_category: bool):
"""Liefert je Anzeige-Einheit (name, farbe, [kategorie-ids]). Bei ``by_category``
ist jede Kategorie eine eigene Einheit, sonst jede Gruppe (Summe ihrer Kategorien)."""
for g in groups:
if by_category:
for c in g.categories:
if not c.is_archived:
yield (c.name, c.color, [c.id])
else:
yield (g.name, g.color, [c.id for c in g.categories if not c.is_archived])
@router.get("/budget-donut")
def budget_donut(
group_by: str = Query(default="group"),
db: Session = Depends(get_db),
user: User = Depends(get_current_user),
) -> dict:
base = base_currency(db, user)
label = _label(db, user)
start, end = budget.period_bounds(label, _start_day(db, user))
planned = budget.effective_planned(db, user, label)
groups = _expense_groups(db, user)
by_category = group_by == "category"
def collect(values: dict[int, int]):
segs, tot = [], 0
for name, color, ids in _units(groups, by_category):
val = sum(values.get(i, 0) for i in ids)
if val > 0:
segs.append({"name": name, "value": val, "color": color})
tot += val
return segs, tot
segments, total = collect(planned)
mode = "planned"
if total == 0:
segments, total = collect(budget.actual_expense_by_category(db, user, start, end, base))
mode = "actual"
return {"segments": segments, "total": total, "currency": base, "mode": mode,
"label": label, "group_by": "category" if by_category else "group"}
@router.get("/expense-share")
def expense_share(
group_by: str = Query(default="category"),
db: Session = Depends(get_db),
user: User = Depends(get_current_user),
) -> dict:
"""Tatsächliche Ausgaben des laufenden Budget-Monats je Kategorie/Gruppe.
Anders als der Budget-Donut zeigt das rein die Ist-Ausgaben – unabhängig
davon, ob für den Monat überhaupt geplant wurde. Die Anteile rechnet die
Oberfläche aus `amount` und `total`, damit sich gerundete Prozente nicht zu
99,9 % addieren."""
base = base_currency(db, user)
label = _label(db, user)
start, end = budget.period_bounds(label, _start_day(db, user))
actual = budget.actual_expense_by_category(db, user, start, end, base)
by_category = group_by != "group"
rows = []
for name, color, ids in _units(_expense_groups(db, user), by_category):
val = sum(actual.get(i, 0) for i in ids)
if val > 0:
rows.append({"name": name, "color": color, "amount": val})
rows.sort(key=lambda r: r["amount"], reverse=True)
return {
"rows": rows,
"total": sum(r["amount"] for r in rows),
"currency": base,
"label": label,
"group_by": "category" if by_category else "group",
}
@router.get("/budget-progress")
def budget_progress(
group_by: str = Query(default="group"),
db: Session = Depends(get_db),
user: User = Depends(get_current_user),
) -> dict:
base = base_currency(db, user)
label = _label(db, user)
start, end = budget.period_bounds(label, _start_day(db, user))
planned = budget.effective_planned(db, user, label)
actual = budget.actual_expense_by_category(db, user, start, end, base)
by_category = group_by == "category"
rows = []
for name, color, ids in _units(_expense_groups(db, user), by_category):
gp = sum(planned.get(i, 0) for i in ids)
ga = sum(actual.get(i, 0) for i in ids)
if gp > 0 or ga > 0:
rows.append({"name": name, "color": color, "planned": gp, "actual": ga, "over": ga > gp})
return {"rows": rows, "currency": base, "label": label,
"group_by": "category" if by_category else "group"}
@router.get("/income-expense")
def income_expense(db: Session = Depends(get_db), user: User = Depends(get_current_user)) -> dict:
base = base_currency(db, user)
label = _label(db, user)
start, end = budget.period_bounds(label, _start_day(db, user))
expense = sum(budget.actual_expense_by_category(db, user, start, end, base).values())
income = sum(budget.income_by_category(db, user, start, end, base).values())
return {"income": income, "expense": expense, "net": income - expense, "currency": base, "label": label}
@router.get("/balances")
def dashboard_balances(db: Session = Depends(get_db), user: User = Depends(get_current_user)) -> dict:
base = base_currency(db, user)
today = date.today()
accounts = (
db.query(Account)
.filter(Account.owner_id == user.id)
.order_by(Account.position, Account.name)
.all()
)
rows = []
total = 0
for a in accounts:
bb = balances.account_balance_base_cents(db, a, base, today)
rows.append({
"id": a.id, "name": a.name, "icon": a.icon, "color": a.color,
"currency": a.currency, "balance_cents": balances.account_balance_cents(db, a),
"balance_base_cents": bb, "archived": a.is_archived,
})
if not a.is_archived:
total += bb
return {"accounts": rows, "total": total, "currency": base}
@router.get("/net-worth")
def net_worth(
days: int = Query(default=90, ge=7, le=365),
db: Session = Depends(get_db),
user: User = Depends(get_current_user),
) -> dict:
base = base_currency(db, user)
end = date.today()
start = end - timedelta(days=days - 1)
accounts = db.query(Account).filter(Account.owner_id == user.id, Account.is_archived == False).all() # noqa: E712
acc_by_id = {a.id: a for a in accounts}
def to_eur(cents: int, ccy: str, on: date) -> int:
v = currency.to_eur_cents(db, cents, ccy, on)
return v if v is not None else cents
opening_eur = sum(to_eur(a.opening_balance_cents, a.currency, a.opening_date or start) for a in accounts)
def eur_effect(t: Transaction) -> int:
if t.type == TxnType.income:
return t.amount_eur_cents
if t.type == TxnType.expense:
return -t.amount_eur_cents
# Transfer: Netto-Effekt aufs Vermögen = EUR-Wert Zugang - EUR-Wert Abgang.
to_acc = acc_by_id.get(t.to_account_id) if t.to_account_id else None
if to_acc is None:
return 0 # Zielkonto archiviert/gelöscht: ignorieren
credited = t.to_amount_cents if t.to_amount_cents is not None else t.amount_cents
return to_eur(credited, to_acc.currency, t.date) - t.amount_eur_cents
txns = db.query(Transaction).filter(
Transaction.owner_id == user.id, Transaction.account_id.in_(list(acc_by_id.keys()) or [0])
).all() if acc_by_id else []
before = sum(eur_effect(t) for t in txns if t.date < start)
deltas: dict[date, int] = defaultdict(int)
for t in txns:
if start <= t.date <= end:
deltas[t.date] += eur_effect(t)
running = opening_eur + before
labels: list[str] = []
values_eur: list[int] = []
d = start
while d <= end:
running += deltas.get(d, 0)
labels.append(d.isoformat())
values_eur.append(running)
d += timedelta(days=1)
if base != "EUR":
rate = currency.rate_on(db, base, end)
if rate is not None:
values_eur = [int(round(v * float(rate))) for v in values_eur]
return {"labels": labels, "values": values_eur, "currency": base}
@router.get("/recent")
def recent(
limit: int = Query(default=8, le=50),
db: Session = Depends(get_db),
user: User = Depends(get_current_user),
) -> dict:
base = base_currency(db, user)
accs = {a.id: a for a in db.query(Account).filter(Account.owner_id == user.id)}
cats = {c.id: c for c in db.query(Category).filter(Category.owner_id == user.id)}
rows = (
db.query(Transaction)
.filter(Transaction.owner_id == user.id)
.order_by(Transaction.date.desc(), Transaction.id.desc())
.limit(limit)
.all()
)
out = []
for t in rows:
acc = accs.get(t.account_id)
if t.type == TxnType.transfer:
to = accs.get(t.to_account_id)
title = f"{acc.name if acc else '?'} → {to.name if to else '?'}"
icon, color, sign = "arrow-left-right", "#6b7480", None
else:
cat = cats.get(t.category_id) if t.category_id else None
title = cat.name if cat else (t.payee or "—")
icon = cat.icon if cat else "more-horizontal"
color = cat.color if cat else "#6b7480"
sign = "pos" if t.type == TxnType.income else "neg"
out.append({
"id": t.id, "date": t.date.isoformat(), "type": t.type.value,
"title": title, "icon": icon, "color": color, "sign": sign,
"amount_cents": t.amount_cents, "currency": acc.currency if acc else "EUR",
"amount_base_cents": t.amount_eur_cents if base == "EUR"
else (currency.from_eur_cents(db, t.amount_eur_cents, base, t.date) or t.amount_eur_cents),
})
return {"transactions": out, "currency": base}