feat(statements): add bank/type/owner/year filters and row numbering

src/app/statements/page.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import { useState, useMemo } from "react";
 import Link from "next/link";
 import { useStatements, useParticipants, useUpdateStatement } from "@/lib/hooks";
 
@@ -30,24 +31,114 @@ function formatAmount(n: number | null): string {
   }).format(Number(n));
 }
 
+const selectCls =
+  "bg-zinc-900 border border-zinc-700 rounded text-xs px-2 py-1.5 text-zinc-300 cursor-pointer hover:border-zinc-600 focus:outline-none focus:border-indigo-500";
+
 export default function StatementsPage() {
   const { data: statements, isLoading } = useStatements();
   const { data: participants } = useParticipants();
   const updateStatement = useUpdateStatement();
 
+  const [bankFilter, setBankFilter] = useState("");
+  const [typeFilter, setTypeFilter] = useState<"all" | "card" | "bank">("all");
+  const [ownerFilter, setOwnerFilter] = useState("");
+  const [yearFilter, setYearFilter] = useState("");
+
+  const banks = useMemo(
+    () => [...new Set((statements ?? []).map((s) => s.bank_name))].sort(),
+    [statements]
+  );
+  const years = useMemo(
+    () =>
+      [
+        ...new Set(
+          (statements ?? [])
+            .map((s) => s.billing_end_date?.slice(0, 4))
+            .filter(Boolean) as string[]
+        ),
+      ].sort((a, b) => b.localeCompare(a)),
+    [statements]
+  );
+
+  const filtered = useMemo(() => {
+    if (!statements) return [];
+    return statements.filter((s) => {
+      const isCard = s.statement_type?.toLowerCase().includes("card") ?? false;
+      if (bankFilter && s.bank_name !== bankFilter) return false;
+      if (typeFilter === "card" && !isCard) return false;
+      if (typeFilter === "bank" && isCard) return false;
+      if (ownerFilter && String(s.owner_id) !== ownerFilter) return false;
+      if (yearFilter && s.billing_end_date?.slice(0, 4) !== yearFilter) return false;
+      return true;
+    });
+  }, [statements, bankFilter, typeFilter, ownerFilter, yearFilter]);
+
+  const hasFilters = bankFilter || typeFilter !== "all" || ownerFilter || yearFilter;
+
   return (
     <div>
-      <h2 className="text-xl font-semibold mb-4">Statements</h2>
+      <div className="flex items-center justify-between mb-4">
+        <h2 className="text-xl font-semibold">Statements</h2>
+        {!isLoading && statements && (
+          <span className="text-xs text-zinc-500">
+            {hasFilters ? `${filtered.length} of ${statements.length}` : statements.length} statements
+          </span>
+        )}
+      </div>
+
+      {/* Filters */}
+      {!isLoading && statements && (
+        <div className="flex flex-wrap gap-2 mb-4">
+          <select value={bankFilter} onChange={(e) => setBankFilter(e.target.value)} className={selectCls}>
+            <option value="">All banks</option>
+            {banks.map((b) => (
+              <option key={b} value={b}>{b}</option>
+            ))}
+          </select>
+
+          <select value={typeFilter} onChange={(e) => setTypeFilter(e.target.value as typeof typeFilter)} className={selectCls}>
+            <option value="all">All types</option>
+            <option value="card">Credit card</option>
+            <option value="bank">Bank account</option>
+          </select>
+
+          {participants && participants.length > 1 && (
+            <select value={ownerFilter} onChange={(e) => setOwnerFilter(e.target.value)} className={selectCls}>
+              <option value="">All owners</option>
+              {participants.map((p) => (
+                <option key={p.id} value={String(p.id)}>{p.name}</option>
+              ))}
+            </select>
+          )}
+
+          <select value={yearFilter} onChange={(e) => setYearFilter(e.target.value)} className={selectCls}>
+            <option value="">All years</option>
+            {years.map((y) => (
+              <option key={y} value={y}>{y}</option>
+            ))}
+          </select>
+
+          {hasFilters && (
+            <button
+              onClick={() => { setBankFilter(""); setTypeFilter("all"); setOwnerFilter(""); setYearFilter(""); }}
+              className="text-xs text-zinc-500 hover:text-zinc-300 px-2 py-1.5 transition-colors"
+            >
+              × Clear
+            </button>
+          )}
+        </div>
+      )}
 
       {isLoading ? (
         <p className="text-zinc-500 text-sm">Loading...</p>
-      ) : !statements?.length ? (
-        <p className="text-zinc-500 text-sm">No statements found</p>
+      ) : !filtered.length ? (
+        <p className="text-zinc-500 text-sm">{hasFilters ? "No statements match filters" : "No statements found"}</p>
       ) : (
         <div className="border border-zinc-700 rounded-xl overflow-hidden">
           <table className="w-full text-sm">
             <thead>
               <tr className="border-b border-zinc-800 bg-zinc-900">
+                <th className="text-left px-3 py-2.5 text-xs text-zinc-600 font-medium w-8">#</th>
                 <th className="text-left px-4 py-2.5 text-xs text-zinc-500 font-medium">Bank</th>
                 <th className="text-left px-4 py-2.5 text-xs text-zinc-500 font-medium">Account</th>
                 <th className="text-left px-4 py-2.5 text-xs text-zinc-500 font-medium">Period</th>
@@ -60,11 +151,10 @@ export default function StatementsPage() {
               </tr>
             </thead>
             <tbody>
-              {statements.map((s) => {
+              {filtered.map((s, idx) => {
                 const isCreditCard = s.statement_type?.toLowerCase().includes("card") ?? false;
                 const displayAmount = isCreditCard ? s.total_amount_due : s.closing_balance;
                 const amount = Number(displayAmount);
-                // CC: red (you owe). Bank: green if positive balance, red if overdraft.
                 const amountColor = isCreditCard
                   ? "text-red-400"
                   : amount >= 0
@@ -73,6 +163,7 @@ export default function StatementsPage() {
 
                 return (
                   <tr key={s.id} className="border-b border-zinc-800/50 hover:bg-zinc-800/20 transition-colors">
+                    <td className="px-3 py-3 text-xs text-zinc-600 tabular-nums">{idx + 1}</td>
                     <td className="px-4 py-3">
                       <div className="font-medium truncate max-w-[180px]" title={s.bank_name}>
                         {s.bank_name}
@@ -88,18 +179,14 @@ export default function StatementsPage() {
                       {formatPeriod(s.billing_start_date, s.billing_end_date)}
                     </td>
                     <td className="px-4 py-3 text-zinc-400 whitespace-nowrap">
-                      {isCreditCard
-                        ? formatDate(s.payment_due_date)
-                        : formatDate(s.billing_end_date)}
+                      {isCreditCard ? formatDate(s.payment_due_date) : formatDate(s.billing_end_date)}
                     </td>
                     <td className="px-4 py-3 text-zinc-500 text-xs">
                       {s.currency}
                     </td>
                     <td className="px-4 py-3 text-right tabular-nums">
                       {displayAmount !== null && displayAmount !== undefined ? (
-                        <span className={amountColor}>
-                          {formatAmount(displayAmount)}
-                        </span>
+                        <span className={amountColor}>{formatAmount(displayAmount)}</span>
                       ) : (
                         <span className="text-zinc-600">—</span>
                       )}
@@ -117,9 +204,7 @@ export default function StatementsPage() {
                           className="bg-zinc-800 border border-zinc-700 rounded text-xs px-2 py-1 text-zinc-300 cursor-pointer hover:border-zinc-600 focus:outline-none focus:border-indigo-500"
                         >
                           {participants.map((p) => (
-                            <option key={p.id} value={p.id}>
-                              {p.name}
-                            </option>
+                            <option key={p.id} value={p.id}>{p.name}</option>
                           ))}
                         </select>
                       ) : (