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# SplitBuddy — Flask app with bills/transfer + payer toggle
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from __future__ import annotations
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import os, sqlite3, csv, io, datetime as dt
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from typing import Optional
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from flask import Flask, g, request, redirect, url_for, render_template_string, send_file
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app = Flask(__name__)
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DB_PATH = os.environ.get("SPLITBUDDY_DB", "splitbuddy.db")
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CURRENCY = "₪"
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PERSON_A = os.environ.get("SPLITBUDDY_ME", "Me") # you
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PERSON_B = os.environ.get("SPLITBUDDY_ROOMIE", "Idan") # roommate
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# ------------------------- DB helpers --------------------------- #
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def get_db() -> sqlite3.Connection:
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if "db" not in g:
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g.db = sqlite3.connect(DB_PATH)
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g.db.row_factory = sqlite3.Row
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return g.db
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@app.teardown_appcontext
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def close_db(_=None):
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db = g.pop("db", None)
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if db is not None:
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db.close()
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def init_db():
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db = get_db()
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db.execute("""
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CREATE TABLE IF NOT EXISTS entries (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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created_at TEXT NOT NULL,
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kind TEXT NOT NULL DEFAULT 'bill', -- 'bill' | 'transfer'
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total REAL NOT NULL DEFAULT 0, -- total amount
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payer TEXT NOT NULL DEFAULT 'A', -- 'A' (you) or 'B' (Idan)
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a_share REAL NOT NULL DEFAULT 0.5, -- your share (0..1), only for bills
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method TEXT NOT NULL DEFAULT 'cash',
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note TEXT
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)
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""")
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# Migrations for older versions
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for col, ddl in [
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("kind", "ALTER TABLE entries ADD COLUMN kind TEXT NOT NULL DEFAULT 'bill'"),
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("total", "ALTER TABLE entries ADD COLUMN total REAL"),
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("payer", "ALTER TABLE entries ADD COLUMN payer TEXT"),
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("a_share","ALTER TABLE entries ADD COLUMN a_share REAL"),
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]:
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try:
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db.execute(ddl)
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except sqlite3.OperationalError:
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pass
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# Normalize NULLs from legacy rows
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db.execute("""
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UPDATE entries
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SET kind = COALESCE(kind, 'bill'),
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total = COALESCE(total, 0),
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payer = COALESCE(payer, 'A'),
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a_share= COALESCE(a_share, 0.5)
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""")
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db.commit()
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# --------------------------- Template --------------------------- #
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BASE = r"""
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
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<title>SplitBuddy</title>
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<link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap" rel="stylesheet">
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<style>
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:root{ --bg:#0f1115; --card:#141822; --muted:#8c93a6; --ok:#19c37d; --bad:#ef4444; --fg:#e6e7eb; --edge:#202637;}
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*{ box-sizing:border-box } body{ margin:0; font-family:Inter,system-ui; background:var(--bg); color:var(--fg) }
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.wrap{ max-width:980px; margin:24px auto; padding:0 16px } header{ display:flex; gap:12px; align-items:center; justify-content:space-between; margin-bottom:16px }
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.h1{ font-size:24px; font-weight:700 } .pill{ display:inline-flex; gap:8px; padding:8px 12px; border-radius:999px; background:var(--card); border:1px solid var(--edge); font-size:14px }
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.pill.ok{ background:rgba(25,195,125,.12); border-color:#1f7a58 } .pill.bad{ background:rgba(239,68,68,.12); border-color:#7a1f1f }
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.muted{ color:var(--muted) } .grid{ display:grid; grid-template-columns:1.2fr .8fr; gap:16px } @media (max-width:900px){ .grid{ grid-template-columns:1fr } }
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.card{ background:var(--card); border:1px solid var(--edge); border-radius:14px; padding:16px } h2{ font-size:16px; margin:0 0 10px }
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form .row{ display:flex; gap:10px; flex-wrap:wrap }
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input, select{ background:#0d1117; border:1px solid #263041; color:var(--fg); border-radius:10px; padding:10px; outline:none }
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input[type="number"]{ max-width:160px } input[type="text"]{ flex:1 }
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.seg{ display:inline-flex; border:1px solid #263041; border-radius:10px; overflow:hidden } .seg input{ display:none } .seg label{ padding:8px 10px; cursor:pointer; background:#0d1117; user-select:none }
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.seg input:checked + label{ background:#182033; color:#b6d1ff }
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.toggle{ display:inline-flex; border:1px solid #263041; border-radius:10px; overflow:hidden }
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.toggle input{ display:none } .toggle label{ padding:8px 12px; cursor:pointer; background:#0d1117; user-select:none; min-width:100px; text-align:center }
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.toggle input:checked + label{ background:#183033; color:#b6d1ff }
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button.btn{ background:#1f6fe8; border:none; color:#fff; padding:10px 14px; border-radius:10px; cursor:pointer }
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button.btn.secondary{ background:#273244 } button.btn.danger{ background:#c92a2a }
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table{ width:100%; border-collapse:collapse } th, td{ border-bottom:1px solid #222b3b; padding:10px; text-align:left; font-size:14px }
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th{ color:#aab3c4 } td.num{ font-variant-numeric:tabular-nums; text-align:right }
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.pos{ color:#ef9a9a } .neg{ color:#9ae6b4 }
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.tag{ font-size:12px; padding:2px 8px; border-radius:999px; background:#1a2332; border:1px solid #243046 }
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</style>
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<script>
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function setShare(pct) {
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const el = document.getElementById('a_share');
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el.value = pct.toFixed(2);
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}
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function onKindChange(kind) {
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const shareWrap = document.getElementById('share-wrap');
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const presets = document.getElementById('presets');
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if (kind === 'transfer') {
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shareWrap.style.display = 'none';
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presets.style.display = 'none';
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} else {
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shareWrap.style.display = '';
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presets.style.display = '';
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}
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}
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document.addEventListener('DOMContentLoaded', () => {
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const kindRadios = document.querySelectorAll('input[name="kind"]');
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kindRadios.forEach(r => r.addEventListener('change', () => onKindChange(r.value)));
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onKindChange(document.querySelector('input[name="kind"]:checked').value);
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});
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</script>
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</head>
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<body>
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<div class="wrap">
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<header>
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<div class="h1">SplitBuddy</div>
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<div>
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<span class="pill {{ 'bad' if summary.total>0 else ('ok' if summary.total<0 else '') }}">
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{% if summary.total > 0 %}
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{{ A }} owes {{ B }} <strong>{{ currency }}{{ '%.2f'|format(summary.total) }}</strong>
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{% elif summary.total < 0 %}
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{{ B }} owes {{ A }} <strong>{{ currency }}{{ '%.2f'|format(-summary.total) }}</strong>
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{% else %}All settled ✨{% endif %}
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</span>
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<span class="pill muted">Balance: {{ currency }}{{ '%.2f'|format(summary.total) }}</span>
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<a class="pill" href="{{ url_for('export_csv') }}">Export CSV</a>
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</div>
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</header>
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<div class="grid">
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<section class="card">
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<h2>Add entry</h2>
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<form method="post" action="{{ url_for('add') }}">
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<div class="row">
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<div class="seg" title="Entry type">
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<input type="radio" id="k_bill" name="kind" value="bill" checked><label for="k_bill">Bill</label>
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<input type="radio" id="k_xfer" name="kind" value="transfer"><label for="k_xfer">Transfer</label>
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</div>
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<div class="toggle" title="Who paid / who sent">
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<input type="radio" id="payer_a" name="payer" value="A" checked><label for="payer_a">{{ A }}</label>
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<input type="radio" id="payer_b" name="payer" value="B"><label for="payer_b">{{ B }}</label>
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</div>
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<input type="number" step="0.01" min="0" name="total" placeholder="Amount" required>
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<select name="method">
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<option>cash</option><option>transfer</option><option>other</option>
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</select>
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</div>
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<div class="row" id="share-wrap" style="margin-top:8px">
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<input id="a_share" type="number" step="0.01" min="0" max="100" name="a_share_pct" placeholder="{{ A }} share %" value="50.00" title="{{ A }}'s share (%)">
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<input type="text" name="note" placeholder="Reason (e.g. rent, groceries, washer)" style="flex:1">
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<input type="datetime-local" name="created_at" value="{{ now_local }}">
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<button class="btn" type="submit">Add</button>
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</div>
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<div class="row" id="presets" style="margin-top:8px">
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<div class="seg" title="Quick presets">
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<input type="radio" id="p50" name="preset" onclick="setShare(50)" checked><label for="p50">50/50</label>
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<input type="radio" id="p66" name="preset" onclick="setShare(66.6667)"><label for="p66">{{ A }} 2/3</label>
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<input type="radio" id="p33" name="preset" onclick="setShare(33.3333)"><label for="p33">{{ A }} 1/3</label>
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</div>
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</div>
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</form>
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</section>
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<section class="card">
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<h2>Stats</h2>
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<div class="muted">Entries: {{ summary.count }}</div>
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<div class="muted">Latest: {{ summary.latest or '—' }}</div>
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<div style="margin-top:8px">
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<span class="tag">Cash Δ: {{ currency }}{{ '%.2f'|format(summary.by_method.cash) }}</span>
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<span class="tag">Transfer Δ: {{ currency }}{{ '%.2f'|format(summary.by_method.transfer) }}</span>
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<span class="tag">Other Δ: {{ currency }}{{ '%.2f'|format(summary.by_method.other) }}</span>
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</div>
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</section>
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</div>
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<section class="card" style="margin-top:16px">
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<h2>Ledger</h2>
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<table>
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<thead>
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<tr>
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<th style="width:160px">Time</th>
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<th>Type</th>
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<th>Payer/Sender</th>
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<th>Reason</th>
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<th>Method</th>
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<th class="num">Your share %</th>
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<th class="num">Amount</th>
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<th class="num">Δ Balance</th>
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<th style="width:120px"></th>
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</tr>
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</thead>
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<tbody>
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{% for e in entries %}
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<tr>
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<td>{{ e.created_at }}</td>
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<td>{{ e.kind }}</td>
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<td>{{ A if e.payer=='A' else B }}</td>
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<td>{{ e.note or '—' }}</td>
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<td>{{ e.method }}</td>
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<td class="num">{{ e.kind == 'bill' and ('%.2f'|format(e.a_share*100) ~ '%') or '—' }}</td>
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<td class="num">{{ currency }}{{ '%.2f'|format(e.total) }}</td>
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<td class="num {{ 'pos' if e.delta>0 else 'neg' if e.delta<0 else '' }}">
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{{ currency }}{{ '%.2f'|format(e.delta) }}
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</td>
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<td>
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<form method="post" action="{{ url_for('delete', entry_id=e.id) }}" onsubmit="return confirm('Delete this entry?');">
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<button class="btn danger" type="submit">Delete</button>
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</form>
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</td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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</section>
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</div>
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</body>
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</html>
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"""
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# --------------------------- Utilities -------------------------- #
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def _now_local_iso_min() -> str:
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return dt.datetime.now().replace(second=0, microsecond=0).isoformat(timespec="minutes")
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class ByMethod:
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def __init__(self, cash=0.0, transfer=0.0, other=0.0):
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self.cash = cash; self.transfer = transfer; self.other = other
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class Summary:
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def __init__(self, total: float, count: int, latest: Optional[str], by_method: ByMethod):
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self.total = total; self.count = count; self.latest = latest; self.by_method = by_method
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def _delta_for_entry(kind: str, total: float, payer: str, a_share: float) -> float:
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"""
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Positive => YOU owe Idan. Negative => Idan owes YOU.
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- bill: delta = (your_share * total) - (total if YOU paid else 0)
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- transfer: delta = -total if YOU sent; +total if Idan sent
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"""
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if kind == "transfer":
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return -total if payer == "A" else total
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# bill
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paid_by_a = total if payer == "A" else 0.0
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return a_share * total - paid_by_a
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# ----------------------------- Routes --------------------------- #
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@app.before_request
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def _ensure_db():
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init_db()
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@app.get("/")
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def index():
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db = get_db()
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rows = db.execute("""
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SELECT id, created_at, kind, total, payer, a_share, method, note
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FROM entries
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ORDER BY datetime(created_at) DESC, id DESC
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""").fetchall()
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entries = []
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for r in rows:
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e = dict(r)
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e["delta"] = _delta_for_entry(e["kind"], e["total"], e["payer"], e["a_share"])
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entries.append(e)
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total_balance = sum(e["delta"] for e in entries) if entries else 0.0
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latest = entries[0]["created_at"] if entries else None
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bm = ByMethod(
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cash=sum(e["delta"] for e in entries if e["method"] == "cash"),
|
|
|
|
|
transfer=sum(e["delta"] for e in entries if e["method"] == "transfer"),
|
|
|
|
|
other=sum(e["delta"] for e in entries if e["method"] == "other"),
|
|
|
|
|
)
|
|
|
|
|
summary = Summary(total=total_balance, count=len(entries), latest=latest, by_method=bm)
|
|
|
|
|
|
|
|
|
|
return render_template_string(
|
|
|
|
|
BASE,
|
|
|
|
|
entries=entries,
|
|
|
|
|
summary=summary,
|
|
|
|
|
A=PERSON_A, B=PERSON_B,
|
|
|
|
|
currency=CURRENCY,
|
|
|
|
|
now_local=_now_local_iso_min(),
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
@app.post("/add")
|
|
|
|
|
def add():
|
|
|
|
|
kind = (request.form.get("kind") or "bill").strip().lower()
|
|
|
|
|
payer = (request.form.get("payer") or "A").strip().upper()
|
|
|
|
|
total = request.form.get("total", type=float)
|
|
|
|
|
a_share_pct = request.form.get("a_share_pct", type=float)
|
|
|
|
|
method = (request.form.get("method") or "cash").strip().lower()
|
|
|
|
|
note = (request.form.get("note") or "").strip()
|
|
|
|
|
created_at = request.form.get("created_at") or _now_local_iso_min()
|
|
|
|
|
|
|
|
|
|
if total is None or total < 0: return redirect(url_for("index"))
|
|
|
|
|
if payer not in ("A","B"): payer = "A"
|
|
|
|
|
if kind not in ("bill","transfer"): kind = "bill"
|
|
|
|
|
|
|
|
|
|
a_share = 0.5
|
|
|
|
|
if kind == "bill":
|
|
|
|
|
if a_share_pct is None: a_share_pct = 50.0
|
|
|
|
|
a_share = max(0.0, min(100.0, a_share_pct)) / 100.0
|
|
|
|
|
|
|
|
|
|
db = get_db()
|
|
|
|
|
db.execute(
|
|
|
|
|
"INSERT INTO entries (created_at, kind, total, payer, a_share, method, note) VALUES (?, ?, ?, ?, ?, ?, ?)",
|
|
|
|
|
(created_at, kind, total, payer, a_share, method, note),
|
|
|
|
|
)
|
|
|
|
|
db.commit()
|
|
|
|
|
return redirect(url_for("index"))
|
|
|
|
|
|
|
|
|
|
@app.post("/delete/<int:entry_id>")
|
|
|
|
|
def delete(entry_id: int):
|
|
|
|
|
db = get_db()
|
|
|
|
|
db.execute("DELETE FROM entries WHERE id = ?", (entry_id,))
|
|
|
|
|
db.commit()
|
|
|
|
|
return redirect(url_for("index"))
|
|
|
|
|
|
|
|
|
|
@app.get("/export.csv")
|
|
|
|
|
def export_csv():
|
|
|
|
|
db = get_db()
|
|
|
|
|
rows = db.execute("""
|
|
|
|
|
SELECT id, created_at, kind, total, payer, a_share, method, note
|
|
|
|
|
FROM entries
|
|
|
|
|
ORDER BY datetime(created_at) DESC, id DESC
|
|
|
|
|
""").fetchall()
|
|
|
|
|
buff = io.StringIO()
|
|
|
|
|
w = csv.writer(buff)
|
|
|
|
|
w.writerow(["id","created_at","kind","payer","a_share_pct","total","method","note","delta"])
|
|
|
|
|
for r in rows:
|
|
|
|
|
a_share_pct = float(r["a_share"]) * 100.0
|
|
|
|
|
delta = _delta_for_entry(r["kind"], r["total"], r["payer"], r["a_share"])
|
|
|
|
|
w.writerow([r["id"], r["created_at"], r["kind"], r["payer"], f"{a_share_pct:.2f}",
|
|
|
|
|
f"{r['total']:.2f}", r["method"], r["note"] or "", f"{delta:.2f}"])
|
|
|
|
|
buff.seek(0)
|
|
|
|
|
return send_file(io.BytesIO(buff.read().encode("utf-8")), mimetype="text/csv",
|
|
|
|
|
as_attachment=True, download_name="splitbuddy_export.csv")
|
|
|
|
|
|
|
|
|
|
# --------------------------- Entrypoint -------------------------- #
|
|
|
|
|
if __name__ == "__main__":
|
|
|
|
|
os.makedirs(os.path.dirname(DB_PATH) or ".", exist_ok=True)
|
|
|
|
|
with app.app_context():
|
|
|
|
|
init_db()
|
|
|
|
|
app.run(debug=True)
|
