Files
finance-app/src/app/trips/[id]/page.tsx
T
siddharthd 7a1acc32a9
ci / lint-test (push) Successful in 45s
feat(trips): say which direction a trip balance points
A participant who has overpaid a trip showed as "$-816.16" under a column
headed "Outstanding on this trip". A negative outstanding reads as a bug
rather than as "they are ahead", so the sign is now spelled out: magnitude
plus one of all square / owes you / ahead — you owe them, coloured the same
way Shared colours the same three states.

Also corrects the footer, which had gone stale and was now simply false. It
said settlement could not be computed per trip because payments carried no
trip attribution. Migration 0022 added split_payments.trip_id and the figures
above it have been net of trip-scoped payments since. What a reader needs to
know is the opposite of what it said: household-tab payments are the ones NOT
counted here.
2026-07-28 11:39:11 +10:00

400 lines
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"use client";
import { use, useState } from "react";
import Link from "next/link";
import {
BarChart,
Bar,
XAxis,
YAxis,
Tooltip,
ResponsiveContainer,
Cell,
} from "recharts";
import { useTripAnalytics, useTrip, useTransactions } from "@/lib/hooks";
import { CreateTripModal } from "@/components/create-trip-modal";
import { formatCategory } from "@/lib/categories";
import { CATEGORY_COLORS, TOOLTIP_STYLE } from "@/lib/category-colors";
function fmtDate(d: string | null) {
if (!d) return null;
return new Date(d).toLocaleDateString("en-AU", { day: "2-digit", month: "short", year: "numeric" });
}
function StatCard({
label,
value,
sub,
color,
}: {
label: string;
value: string;
sub?: string;
color: string;
}) {
return (
<div className="bg-zinc-900 border border-zinc-800 rounded-xl p-5 relative overflow-hidden">
<div className="absolute top-0 left-0 right-0 h-0.5" style={{ backgroundColor: color }} />
<p className="text-xs text-zinc-500 mb-1">{label}</p>
<p className="text-2xl font-semibold tabular-nums">{value}</p>
{sub && <p className="text-xs text-zinc-600 mt-1 truncate">{sub}</p>}
</div>
);
}
function DailyTooltip({ active, payload, label }: { active?: boolean; payload?: { value: number }[]; label?: string }) {
if (!active || !payload?.length) return null;
return (
<div style={TOOLTIP_STYLE} className="p-2.5 text-xs">
<p className="text-zinc-400 mb-1">
{label ? new Date(label).toLocaleDateString("en-AU", { day: "2-digit", month: "short", year: "numeric" }) : ""}
</p>
<p className="text-zinc-100 font-medium">${Number(payload[0].value).toFixed(2)}</p>
</div>
);
}
function CategoryTooltip({ active, payload }: { active?: boolean; payload?: { payload: { category: string }; value: number }[] }) {
if (!active || !payload?.length) return null;
return (
<div style={TOOLTIP_STYLE} className="p-2.5 text-xs">
<p className="text-zinc-400 mb-1">{formatCategory(payload[0].payload.category)}</p>
<p className="text-zinc-100 font-medium">${Number(payload[0].value).toFixed(2)}</p>
</div>
);
}
export default function TripDetailPage({ params }: { params: Promise<{ id: string }> }) {
const { id } = use(params);
const tripId = Number(id);
const { data: analytics, isLoading } = useTripAnalytics(tripId);
const { data: trip } = useTrip(tripId);
const [tab, setTab] = useState<"overview" | "transactions">("overview");
const [editModal, setEditModal] = useState(false);
const { data: txData } = useTransactions({ trip_id: id, limit: 500 });
if (isLoading || !analytics) {
return (
<div className="space-y-6">
<div className="h-32 bg-zinc-900 rounded-2xl animate-pulse" />
<div className="grid grid-cols-2 sm:grid-cols-4 gap-4">
{[...Array(4)].map((_, i) => <div key={i} className="h-24 bg-zinc-900 rounded-xl animate-pulse" />)}
</div>
</div>
);
}
const { total_spend, transaction_count, num_days, daily_average, category_breakdown, daily_spend, top_merchants, tag_breakdown, participant_splits } = analytics;
const t = analytics.trip;
const maxMerchant = top_merchants[0]?.amount ?? 1;
const dateRange = t.start_date && t.end_date
? `${fmtDate(t.start_date)} ${fmtDate(t.end_date)}`
: t.start_date
? `From ${fmtDate(t.start_date)}`
: null;
return (
<div className="space-y-6">
{/* Hero */}
<div
className="relative rounded-2xl overflow-hidden p-6"
style={{
background: `linear-gradient(135deg, ${t.color}28 0%, #18181b 60%)`,
borderLeft: `3px solid ${t.color}`,
}}
>
<div className="flex items-start justify-between gap-4 flex-wrap">
<div>
<div className="flex items-center gap-2 mb-1">
<Link href="/trips" className="text-xs text-zinc-500 hover:text-zinc-300 transition-colors">
Trips
</Link>
</div>
<h1 className="text-2xl font-bold">{t.name}</h1>
{dateRange && <p className="text-sm text-zinc-400 mt-1">{dateRange}</p>}
{t.description && <p className="text-sm text-zinc-500 mt-1">{t.description}</p>}
</div>
<button
onClick={() => setEditModal(true)}
className="px-3 py-1.5 bg-zinc-800/80 hover:bg-zinc-700 text-zinc-300 rounded-lg text-sm transition-colors flex-shrink-0"
>
Edit Trip
</button>
</div>
</div>
{/* Stat cards */}
<div className="grid grid-cols-2 sm:grid-cols-4 gap-4">
{/* Deliberately every payer, not just this owner — a trip cost what the
group put into it. The split figures below are owner-scoped, so this
says whose money it counts to stop the two being read as one lens. */}
<StatCard label="Total Spend" value={`$${Number(total_spend).toFixed(2)}`} sub="all payers, net of refunds" color={t.color} />
<StatCard label="Transactions" value={String(transaction_count)} sub="total" color={t.color} />
<StatCard label="Daily Average" value={`$${Number(daily_average).toFixed(2)}`} sub="per day" color={t.color} />
<StatCard label="Days" value={String(num_days)} sub={dateRange ?? "date range"} color={t.color} />
</div>
{/* Tab bar */}
<div className="flex gap-0 border-b border-zinc-800">
{(["overview", "transactions"] as const).map((tabName) => (
<button
key={tabName}
onClick={() => setTab(tabName)}
className={`px-5 py-2.5 text-sm capitalize transition-colors border-b-2 -mb-px ${
tab === tabName
? "border-current text-white font-medium"
: "border-transparent text-zinc-500 hover:text-zinc-300"
}`}
style={tab === tabName ? { borderColor: t.color } : {}}
>
{tabName}
</button>
))}
</div>
{tab === "overview" && (
<div className="space-y-5">
{/* Daily spend */}
{daily_spend.length > 0 && (
<div className="bg-zinc-900 border border-zinc-800 rounded-xl p-5">
<h3 className="text-sm font-medium mb-4">Daily Spend</h3>
<ResponsiveContainer width="100%" height={200}>
<BarChart data={daily_spend} margin={{ top: 4, right: 8, bottom: 0, left: 8 }}>
<XAxis
dataKey="date"
tick={{ fill: "#71717a", fontSize: 11 }}
axisLine={false}
tickLine={false}
tickFormatter={(v) => new Date(v).toLocaleDateString("en-AU", { day: "2-digit", month: "short" })}
interval="preserveStartEnd"
/>
<YAxis
tick={{ fill: "#71717a", fontSize: 11 }}
axisLine={false}
tickLine={false}
tickFormatter={(v) => `$${v}`}
width={52}
/>
<Tooltip content={<DailyTooltip />} cursor={{ fill: "#27272a" }} />
<Bar dataKey="amount" fill={t.color} radius={[3, 3, 0, 0]} maxBarSize={40} opacity={0.85} />
</BarChart>
</ResponsiveContainer>
</div>
)}
<div className="grid grid-cols-1 lg:grid-cols-2 gap-5">
{/* Category breakdown */}
{category_breakdown.length > 0 && (
<div className="bg-zinc-900 border border-zinc-800 rounded-xl p-5">
<h3 className="text-sm font-medium mb-4">By Category</h3>
<ResponsiveContainer width="100%" height={Math.max(120, category_breakdown.length * 32)}>
<BarChart
data={category_breakdown}
layout="vertical"
margin={{ top: 0, right: 60, bottom: 0, left: 100 }}
>
<XAxis type="number" tick={{ fill: "#71717a", fontSize: 11 }} axisLine={false} tickLine={false} tickFormatter={(v) => `$${v}`} />
<YAxis
type="category"
dataKey="category"
tick={{ fill: "#a1a1aa", fontSize: 12 }}
axisLine={false}
tickLine={false}
tickFormatter={formatCategory}
width={98}
/>
<Tooltip content={<CategoryTooltip />} cursor={{ fill: "#27272a" }} />
<Bar dataKey="amount" radius={[0, 3, 3, 0]} maxBarSize={22}>
{category_breakdown.map((entry) => (
<Cell key={entry.category} fill={CATEGORY_COLORS[entry.category] || "#6366f1"} opacity={0.85} />
))}
</Bar>
</BarChart>
</ResponsiveContainer>
</div>
)}
{/* Top merchants */}
{top_merchants.length > 0 && (
<div className="bg-zinc-900 border border-zinc-800 rounded-xl p-5">
<h3 className="text-sm font-medium mb-4">Top Merchants</h3>
<div className="space-y-3">
{top_merchants.map((m, i) => (
<div key={m.merchant} className="flex items-center gap-3">
<span className="text-xs text-zinc-600 w-4 tabular-nums text-right">{i + 1}</span>
<div className="flex-1 min-w-0">
<div className="flex items-center justify-between mb-1">
<span className="text-sm truncate">{m.merchant || "Unknown"}</span>
<span className="text-sm font-mono tabular-nums ml-2 flex-shrink-0">${Number(m.amount).toFixed(2)}</span>
</div>
<div className="h-1.5 bg-zinc-800 rounded-full overflow-hidden">
<div
className="h-full rounded-full"
style={{
width: `${(m.amount / maxMerchant) * 100}%`,
backgroundColor: t.color,
opacity: 0.7,
}}
/>
</div>
</div>
</div>
))}
</div>
</div>
)}
</div>
{/* Tag breakdown */}
{tag_breakdown.length > 0 && (
<div className="bg-zinc-900 border border-zinc-800 rounded-xl p-5">
<h3 className="text-sm font-medium mb-3">By Tag</h3>
<div className="flex flex-wrap gap-2">
{tag_breakdown.map((tag) => (
<div
key={tag.tag_id}
className="flex items-center gap-2 px-3 py-2 rounded-lg border border-zinc-800 bg-zinc-800/50"
>
<span className="w-2.5 h-2.5 rounded-full flex-shrink-0" style={{ backgroundColor: tag.color }} />
<span className="text-sm font-medium">{tag.name}</span>
<span className="text-xs text-zinc-500">{tag.count} txns</span>
<span className="text-sm font-mono tabular-nums text-zinc-300">${Number(tag.amount).toFixed(2)}</span>
</div>
))}
</div>
</div>
)}
{/* Participant splits */}
{participant_splits.length > 0 && (
<div className="bg-zinc-900 border border-zinc-800 rounded-xl overflow-hidden">
<div className="px-5 py-3 border-b border-zinc-800 flex items-center justify-between">
<h3 className="text-sm font-medium">Participant Splits</h3>
<Link href="/shared" className="text-xs text-zinc-500 hover:text-zinc-300">
View in Shared
</Link>
</div>
<table className="w-full text-sm">
<thead>
<tr className="border-b border-zinc-800">
{["Person", "Outstanding on this trip"].map((h) => (
<th
key={h}
className={`px-5 py-2.5 text-xs text-zinc-500 font-medium ${h === "Person" ? "text-left" : "text-right"}`}
>
{h}
</th>
))}
</tr>
</thead>
<tbody>
{/* A negative outstanding means they have paid more towards this
trip than their share of it — which reads as a typo unless the
sign is spelled out. Shown as a magnitude plus a word, the same
way Shared does it, so the two pages agree on what a direction
means. */}
{participant_splits.map((p) => {
const owed = Number(p.owed);
const square = Math.abs(owed) < 0.005;
const theyOweMe = owed > 0;
return (
<tr key={p.participant_id} className="border-b border-zinc-800/50 last:border-0">
<td className="px-5 py-3 font-medium">{p.name}</td>
<td className="px-5 py-3 text-right tabular-nums font-mono">
<span className={square ? "text-zinc-500" : theyOweMe ? "text-amber-400" : "text-blue-400"}>
${Math.abs(owed).toFixed(2)}
</span>
<span className="block text-[11px] text-zinc-500 mt-0.5 font-sans">
{square ? "all square" : theyOweMe ? "owes you" : "ahead — you owe them"}
</span>
{p.unconverted_count > 0 && (
<span className="block text-[11px] text-amber-500/80 mt-0.5 font-sans">
approx · {p.unconverted_count} unconverted
</span>
)}
</td>
</tr>
);
})}
</tbody>
</table>
{/* This note used to say a per-trip figure could not be computed,
because payments carried no trip attribution. Migration 0022 added
split_payments.trip_id, so it can and now does — the figures above
are net of payments scoped to this trip. What the note has to say
instead is which payments are NOT in them. */}
<p className="px-5 py-2.5 text-xs text-zinc-500 border-t border-zinc-800">
Net of payments recorded against this trip. Payments on the ongoing
household tab are not counted here
see <Link href="/shared" className="text-zinc-400 hover:text-zinc-200 underline">Shared</Link> for
the overall balance.
</p>
</div>
)}
{category_breakdown.length === 0 && daily_spend.length === 0 && (
<div className="text-center py-12 text-zinc-600">
<p className="text-sm">No transactions assigned to this trip yet.</p>
<Link href="/transactions" className="text-indigo-400 hover:text-indigo-300 text-sm mt-1 inline-block">
Go to Transactions to assign some
</Link>
</div>
)}
</div>
)}
{tab === "transactions" && (
<div>
{!txData?.data.length ? (
<div className="text-center py-12 text-zinc-600">
<p className="text-sm">No transactions assigned to this trip yet.</p>
<Link href="/transactions" className="text-indigo-400 hover:text-indigo-300 text-sm mt-1 inline-block">
Go to Transactions to assign some
</Link>
</div>
) : (
<div className="border border-zinc-800 rounded-xl overflow-hidden">
<table className="w-full text-sm">
<thead>
<tr className="border-b border-zinc-800 bg-zinc-900/60">
{["Date", "Description", "Merchant", "Category", "Amount"].map((h) => (
<th
key={h}
className={`px-4 py-2.5 text-xs text-zinc-500 font-medium ${h === "Amount" ? "text-right" : "text-left"}`}
>
{h}
</th>
))}
</tr>
</thead>
<tbody>
{txData.data.map((tx) => (
<tr key={tx.id} className="border-b border-zinc-800/40 last:border-0 hover:bg-zinc-900/40 transition-colors">
<td className="px-4 py-2.5 text-xs text-zinc-400 whitespace-nowrap">
{new Date(tx.transaction_date).toLocaleDateString("en-AU", { day: "2-digit", month: "short" })}
</td>
<td className="px-4 py-2.5 max-w-xs truncate text-zinc-300">{tx.description}</td>
<td className="px-4 py-2.5 text-zinc-400 truncate">{tx.effective_merchant || "—"}</td>
<td className="px-4 py-2.5 text-zinc-500 text-xs">{formatCategory(tx.effective_category)}</td>
<td className="px-4 py-2.5 text-right tabular-nums font-mono text-red-400">
${Number(tx.amount).toFixed(2)}
</td>
</tr>
))}
</tbody>
</table>
</div>
)}
</div>
)}
{editModal && trip && (
<CreateTripModal trip={trip} onClose={() => setEditModal(false)} />
)}
</div>
);
}