feat: implement receipt alias functionality with CRUD operations and integrate with receipt import

frontend/app/kvitto/ReceiptImportClient.tsx

@@ -1,284 +1,302 @@
-'use client';
-
-import { useRef, useState } from 'react';
-
-type ParsedItem = {
-  rawName: string;
-  quantity: number;
-  unit: string;
-  price?: number | null;
-  matchedProductId?: number;
-  matchedProductName?: string;
-};
-
-type RowState = ParsedItem & { checked: boolean; editQty: string; editUnit: string };
-
-const UNITS = ['st', 'kg', 'g', 'l', 'dl', 'cl', 'ml', 'förp', 'pak', 'burk', 'flaska'];
-
-export default function ReceiptImportClient() {
-  const fileRef = useRef<HTMLInputElement>(null);
-  const [preview, setPreview] = useState<string | null>(null);
-  const [parsing, setParsing] = useState(false);
-  const [saving, setSaving] = useState(false);
-  const [rows, setRows] = useState<RowState[]>([]);
-  const [error, setError] = useState<string | null>(null);
-  const [savedCount, setSavedCount] = useState<number | null>(null);
-  const [selectedFile, setSelectedFile] = useState<File | null>(null);
-
-  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
-    const file = e.target.files?.[0];
-    if (!file) return;
-    setSelectedFile(file);
-    if (file.type === 'application/pdf') {
-      setPreview('pdf');
-    } else {
-      setPreview(URL.createObjectURL(file));
-    }
-    setRows([]);
-    setError(null);
-    setSavedCount(null);
-  };
-
-  const handleParse = async () => {
-    if (!selectedFile) return;
-    setParsing(true);
-    setError(null);
-    try {
-      const fd = new FormData();
-      fd.append('file', selectedFile);
-      const res = await fetch('/api/receipt-import-proxy', { method: 'POST', body: fd });
-      if (!res.ok) {
-        const e = await res.json().catch(() => ({ message: 'Okänt fel' }));
-        throw new Error(e.message ?? 'Servern svarade med fel');
-      }
-      const items: ParsedItem[] = await res.json();
-      setRows(
-        items.map((item) => ({
-          ...item,
-          checked: !!item.matchedProductId,
-          editQty: String(item.quantity),
-          editUnit: item.unit,
-        })),
-      );
-    } catch (err) {
-      setError(err instanceof Error ? err.message : 'Kunde inte tolka kvittot');
-    } finally {
-      setParsing(false);
-    }
-  };
-
-  const updateRow = (i: number, patch: Partial<RowState>) => {
-    setRows((prev) => prev.map((r, idx) => (idx === i ? { ...r, ...patch } : r)));
-  };
-
-  const handleSave = async () => {
-    const toSave = rows.filter((r) => r.checked && r.matchedProductId);
-    if (toSave.length === 0) return;
-    setSaving(true);
-    setError(null);
-    try {
-      await Promise.all(
-        toSave.map((r) =>
-          fetch('/api/inventory', {
-            method: 'POST',
-            headers: { 'Content-Type': 'application/json' },
-            body: JSON.stringify({
-              productId: r.matchedProductId,
-              quantity: parseFloat(r.editQty) || r.quantity,
-              unit: r.editUnit,
-            }),
-          }),
-        ),
-      );
-      setSavedCount(toSave.length);
-      setRows([]);
-      setPreview(null);
-      setSelectedFile(null);
-      if (fileRef.current) fileRef.current.value = '';
-    } catch {
-      setError('Något gick fel vid sparning. Försök igen.');
-    } finally {
-      setSaving(false);
-    }
-  };
-
-  const checkedCount = rows.filter((r) => r.checked && r.matchedProductId).length;
-  const unmatchedCount = rows.filter((r) => !r.matchedProductId).length;
-
-  return (
-    <div>
-      {/* Fil-input */}
-      <div
-        style={{
-          border: '2px dashed #ced4da',
-          borderRadius: '10px',
-          padding: '1.5rem',
-          textAlign: 'center',
-          background: '#fafafa',
-          marginBottom: '1rem',
-          cursor: 'pointer',
-        }}
-        onClick={() => fileRef.current?.click()}
-      >
-        <input
-          ref={fileRef}
-          type="file"
-          accept="image/*,application/pdf"
-          capture="environment"
-          onChange={handleFileChange}
-          style={{ display: 'none' }}
-        />
-        {preview === 'pdf' ? (
-          <div style={{ padding: '1rem', color: '#333' }}>
-            <div style={{ fontSize: '2.5rem', marginBottom: '0.5rem' }}>📄</div>
-            <div style={{ fontWeight: 600 }}>{selectedFile?.name}</div>
-            <div style={{ fontSize: '0.85rem', color: '#888', marginTop: '0.25rem' }}>PDF-kvitto valt</div>
-          </div>
-        ) : preview ? (
-          // eslint-disable-next-line @next/next/no-img-element
-          <img
-            src={preview}
-            alt="Kvittoförhandsgranskning"
-            style={{ maxHeight: '300px', maxWidth: '100%', borderRadius: '6px' }}
-          />
-        ) : (
-          <div style={{ color: '#888' }}>
-            <div style={{ fontSize: '2.5rem', marginBottom: '0.5rem' }}>📷</div>
-            <div style={{ fontWeight: 600 }}>Fotografera eller välj kvitto</div>
-            <div style={{ fontSize: '0.85rem', marginTop: '0.25rem' }}>
-              Klicka för att välja bild (JPEG, PNG, WebP) eller PDF
-            </div>
-          </div>
-        )}
-      </div>
-
-      {preview && rows.length === 0 && (
-        <button
-          onClick={handleParse}
-          disabled={parsing}
-          style={primaryBtn(parsing)}
-        >
-          {parsing ? '⏳ Tolkar kvitto via AI...' : '🔍 Tolka kvitto'}
-        </button>
-      )}
-
-      {error && (
-        <p style={{ color: '#c0392b', background: '#fdf0ef', padding: '0.75rem 1rem', borderRadius: '6px', marginTop: '0.75rem' }}>
-          {error}
-        </p>
-      )}
-
-      {savedCount !== null && (
-        <p style={{ color: '#27ae60', background: '#edfdf4', padding: '0.75rem 1rem', borderRadius: '6px', marginTop: '0.75rem', fontWeight: 600 }}>
-          ✓ {savedCount} {savedCount === 1 ? 'vara lades till' : 'varor lades till'} i inventariet.
-        </p>
-      )}
-
-      {/* Parsade rader */}
-      {rows.length > 0 && (
-        <div style={{ marginTop: '1.25rem' }}>
-          <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'baseline', marginBottom: '0.5rem' }}>
-            <h2 style={{ margin: 0, fontSize: '1.05rem' }}>
-              Identifierade varor ({rows.length})
-            </h2>
-            {unmatchedCount > 0 && (
-              <span style={{ fontSize: '0.8rem', color: '#e67e22' }}>
-                {unmatchedCount} {unmatchedCount === 1 ? 'vara' : 'varor'} saknas i produktdatabasen
-              </span>
-            )}
-          </div>
-
-          <div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
-            {rows.map((row, i) => {
-              const matched = !!row.matchedProductId;
-              return (
-                <div
-                  key={i}
-                  style={{
-                    display: 'grid',
-                    gridTemplateColumns: '36px 1fr 80px 90px',
-                    gap: '0.5rem',
-                    alignItems: 'center',
-                    padding: '0.6rem 0.75rem',
-                    border: `1px solid ${matched ? '#dee2e6' : '#f5cba7'}`,
-                    borderRadius: '6px',
-                    background: matched ? '#fff' : '#fef9f5',
-                    opacity: row.checked || !matched ? 1 : 0.7,
-                  }}
-                >
-                  <input
-                    type="checkbox"
-                    checked={row.checked}
-                    disabled={!matched}
-                    onChange={(e) => updateRow(i, { checked: e.target.checked })}
-                    style={{ width: '18px', height: '18px', cursor: matched ? 'pointer' : 'not-allowed' }}
-                    title={!matched ? 'Produkten finns inte i databasen — lägg till den i admin först' : ''}
-                  />
-                  <div>
-                    <div style={{ fontWeight: 500, fontSize: '0.9rem' }}>
-                      {row.matchedProductName ?? row.rawName}
-                    </div>
-                    {row.matchedProductName && row.matchedProductName.toLowerCase() !== row.rawName.toLowerCase() && (
-                      <div style={{ fontSize: '0.75rem', color: '#888' }}>
-                        Kvitto: {row.rawName}
-                      </div>
-                    )}
-                    {!matched && (
-                      <div style={{ fontSize: '0.75rem', color: '#e67e22' }}>
-                        Ingen matchning — {row.rawName}
-                      </div>
-                    )}
-                  </div>
-                  <input
-                    type="number"
-                    min="0"
-                    step="0.01"
-                    value={row.editQty}
-                    onChange={(e) => updateRow(i, { editQty: e.target.value })}
-                    style={{ padding: '0.3rem 0.5rem', border: '1px solid #ced4da', borderRadius: '4px', width: '100%', fontSize: '0.9rem' }}
-                  />
-                  <select
-                    value={row.editUnit}
-                    onChange={(e) => updateRow(i, { editUnit: e.target.value })}
-                    style={{ padding: '0.3rem 0.5rem', border: '1px solid #ced4da', borderRadius: '4px', fontSize: '0.9rem' }}
-                  >
-                    {UNITS.map((u) => <option key={u} value={u}>{u}</option>)}
-                  </select>
-                </div>
-              );
-            })}
-          </div>
-
-          <div style={{ display: 'flex', gap: '0.75rem', alignItems: 'center' }}>
-            <button
-              onClick={handleSave}
-              disabled={saving || checkedCount === 0}
-              style={primaryBtn(saving || checkedCount === 0)}
-            >
-              {saving ? 'Sparar...' : `Lägg till ${checkedCount} ${checkedCount === 1 ? 'vara' : 'varor'} i inventariet`}
-            </button>
-            <button
-              onClick={() => { setRows([]); setPreview(null); setSelectedFile(null); if (fileRef.current) fileRef.current.value = ''; }}
-              style={{ padding: '0.5rem 1rem', background: '#f0f0f0', border: '1px solid #ccc', borderRadius: '6px', cursor: 'pointer', fontSize: '0.9rem' }}
-            >
-              Börja om
-            </button>
-          </div>
-        </div>
-      )}
-    </div>
-  );
-}
-
-function primaryBtn(disabled: boolean): React.CSSProperties {
-  return {
-    padding: '0.6rem 1.25rem',
-    background: disabled ? '#aaa' : '#0070f3',
-    color: '#fff',
-    border: 'none',
-    borderRadius: '6px',
-    cursor: disabled ? 'not-allowed' : 'pointer',
-    fontWeight: 600,
-    fontSize: '0.95rem',
-  };
+'use client';
+
+import { useRef, useState, useEffect } from 'react';
+
+type ParsedItem = {
+  rawName: string;
+  quantity: number;
+  unit: string;
+  price?: number | null;
+  matchedProductId?: number;
+  matchedProductName?: string;
+  suggestedProductId?: number;
+  suggestedProductName?: string;
+};
+
+type Product = { id: number; name: string; canonicalName: string | null };
+
+type RowState = {
+  rawName: string;
+  quantity: number;
+  unit: string;
+  price?: number | null;
+  selectedProductId: number | '';
+  selectedProductName: string;
+  checked: boolean;
+  saveAlias: boolean;
+  editQty: string;
+  editUnit: string;
+  matchSource: 'alias' | 'suggestion' | 'manual' | 'none';
+};
+
+const UNITS = ['st', 'kg', 'g', 'l', 'dl', 'cl', 'ml', 'förp', 'pak', 'burk', 'flaska'];
+
+export default function ReceiptImportClient() {
+  const fileRef = useRef<HTMLInputElement>(null);
+  const [preview, setPreview] = useState<string | null>(null);
+  const [parsing, setParsing] = useState(false);
+  const [saving, setSaving] = useState(false);
+  const [rows, setRows] = useState<RowState[]>([]);
+  const [allProducts, setAllProducts] = useState<Product[]>([]);
+  const [error, setError] = useState<string | null>(null);
+  const [savedCount, setSavedCount] = useState<number | null>(null);
+  const [selectedFile, setSelectedFile] = useState<File | null>(null);
+
+  useEffect(() => {
+    fetch('/api/products')
+      .then((r) => r.json())
+      .then((data) => { if (Array.isArray(data)) setAllProducts(data); })
+      .catch(() => {});
+  }, []);
+
+  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    setSelectedFile(file);
+    setPreview(file.type === 'application/pdf' ? 'pdf' : URL.createObjectURL(file));
+    setRows([]);
+    setError(null);
+    setSavedCount(null);
+  };
+
+  const handleParse = async () => {
+    if (!selectedFile) return;
+    setParsing(true);
+    setError(null);
+    try {
+      const fd = new FormData();
+      fd.append('file', selectedFile);
+      const res = await fetch('/api/receipt-import-proxy', { method: 'POST', body: fd });
+      if (!res.ok) {
+        const e = await res.json().catch(() => ({ message: 'Okänt fel' }));
+        throw new Error(e.message ?? 'Servern svarade med fel');
+      }
+      const items: ParsedItem[] = await res.json();
+      setRows(
+        items.map((item): RowState => {
+          if (item.matchedProductId) {
+            return {
+              rawName: item.rawName,
+              quantity: item.quantity,
+              unit: item.unit,
+              price: item.price,
+              selectedProductId: item.matchedProductId,
+              selectedProductName: item.matchedProductName ?? '',
+              checked: true,
+              saveAlias: false,
+              editQty: String(item.quantity),
+              editUnit: item.unit,
+              matchSource: 'alias',
+            };
+          }
+          if (item.suggestedProductId) {
+            return {
+              rawName: item.rawName,
+              quantity: item.quantity,
+              unit: item.unit,
+              price: item.price,
+              selectedProductId: item.suggestedProductId,
+              selectedProductName: item.suggestedProductName ?? '',
+              checked: false,
+              saveAlias: false,
+              editQty: String(item.quantity),
+              editUnit: item.unit,
+              matchSource: 'suggestion',
+            };
+          }
+          return {
+            rawName: item.rawName,
+            quantity: item.quantity,
+            unit: item.unit,
+            price: item.price,
+            selectedProductId: '',
+            selectedProductName: '',
+            checked: false,
+            saveAlias: false,
+            editQty: String(item.quantity),
+            editUnit: item.unit,
+            matchSource: 'none',
+          };
+        }),
+      );
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Kunde inte tolka kvittot');
+    } finally {
+      setParsing(false);
+    }
+  };
+
+  const updateRow = (i: number, patch: Partial<RowState>) => {
+    setRows((prev) => prev.map((r, idx) => (idx === i ? { ...r, ...patch } : r)));
+  };
+
+  const handleProductSelect = (i: number, productId: string) => {
+    if (!productId) {
+      updateRow(i, { selectedProductId: '', selectedProductName: '', checked: false, matchSource: 'none' });
+      return;
+    }
+    const prod = allProducts.find((p) => p.id === Number(productId));
+    if (prod) {
+      updateRow(i, {
+        selectedProductId: prod.id,
+        selectedProductName: prod.canonicalName ?? prod.name,
+        checked: true,
+        matchSource: 'manual',
+        saveAlias: true,
+      });
+    }
+  };
+
+  const handleSave = async () => {
+    const toSave = rows.filter((r) => r.checked && r.selectedProductId !== '');
+    if (toSave.length === 0) return;
+    setSaving(true);
+    setError(null);
+    try {
+      await Promise.all([
+        ...toSave.map((r) =>
+          fetch('/api/inventory', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({
+              productId: r.selectedProductId,
+              quantity: parseFloat(r.editQty) || r.quantity,
+              unit: r.editUnit,
+              brand: r.rawName,
+            }),
+          }),
+        ),
+        ...toSave
+          .filter((r) => r.saveAlias && r.selectedProductId !== '')
+          .map((r) =>
+            fetch('/api/receipt-alias-proxy', {
+              method: 'POST',
+              headers: { 'Content-Type': 'application/json' },
+              body: JSON.stringify({
+                receiptName: r.rawName,
+                productId: r.selectedProductId,
+              }),
+            }),
+          ),
+      ]);
+      setSavedCount(toSave.length);
+      setRows([]);
+      setPreview(null);
+      setSelectedFile(null);
+      if (fileRef.current) fileRef.current.value = '';
+    } catch {
+      setError('Något gick fel vid sparning. Försök igen.');
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  const checkedCount = rows.filter((r) => r.checked && r.selectedProductId !== '').length;
+
+  const sourceLabel = (src: RowState['matchSource']) => {
+    if (src === 'alias') return { text: 'Känd vara', color: '#27ae60' };
+    if (src === 'suggestion') return { text: 'Förslag', color: '#e67e22' };
+    if (src === 'manual') return { text: 'Manuellt vald', color: '#0070f3' };
+    return null;
+  };
+
+  return (
+    <div>
+      <div
+        style={{ border: '2px dashed #ced4da', borderRadius: '10px', padding: '1.5rem', textAlign: 'center', background: '#fafafa', marginBottom: '1rem', cursor: 'pointer' }}
+        onClick={() => fileRef.current?.click()}
+      >
+        <input ref={fileRef} type="file" accept="image/*,application/pdf" capture="environment" onChange={handleFileChange} style={{ display: 'none' }} />
+        {preview === 'pdf' ? (
+          <div style={{ padding: '1rem' }}>
+            <div style={{ fontSize: '2.5rem', marginBottom: '0.5rem' }}>📄</div>
+            <div style={{ fontWeight: 600 }}>{selectedFile?.name}</div>
+            <div style={{ fontSize: '0.85rem', color: '#888', marginTop: '0.25rem' }}>PDF-kvitto valt</div>
+          </div>
+        ) : preview ? (
+          // eslint-disable-next-line @next/next/no-img-element
+          <img src={preview} alt="Kvittoförhandsgranskning" style={{ maxHeight: '300px', maxWidth: '100%', borderRadius: '6px' }} />
+        ) : (
+          <div style={{ color: '#888' }}>
+            <div style={{ fontSize: '2.5rem', marginBottom: '0.5rem' }}>📷</div>
+            <div style={{ fontWeight: 600 }}>Fotografera eller välj kvitto</div>
+            <div style={{ fontSize: '0.85rem', marginTop: '0.25rem' }}>Klicka för att välja bild (JPEG, PNG, WebP) eller PDF</div>
+          </div>
+        )}
+      </div>
+
+      {preview && rows.length === 0 && (
+        <button onClick={handleParse} disabled={parsing} style={primaryBtn(parsing)}>
+          {parsing ? '⏳ Läser kvitto...' : '🔍 Läs kvitto'}
+        </button>
+      )}
+
+      {error && (
+        <p style={{ color: '#c0392b', background: '#fdf0ef', padding: '0.75rem 1rem', borderRadius: '6px', marginTop: '0.75rem' }}>{error}</p>
+      )}
+
+      {savedCount !== null && (
+        <p style={{ color: '#27ae60', background: '#edfdf4', padding: '0.75rem 1rem', borderRadius: '6px', marginTop: '0.75rem', fontWeight: 600 }}>
+          ✓ {savedCount} {savedCount === 1 ? 'vara lades till' : 'varor lades till'} i inventariet.
+        </p>
+      )}
+
+      {rows.length > 0 && (
+        <div style={{ marginTop: '1.25rem' }}>
+          <div style={{ marginBottom: '0.75rem', display: 'flex', gap: '1rem', alignItems: 'baseline', flexWrap: 'wrap' }}>
+            <h2 style={{ margin: 0, fontSize: '1.05rem' }}>Identifierade varor ({rows.length})</h2>
+            <span style={{ fontSize: '0.8rem', color: '#888' }}>Grön = känd koppling · Orange = förslag · Välj manuellt om inget förslag</span>
+          </div>
+
+          <div style={{ display: 'grid', gap: '0.5rem', marginBottom: '1rem' }}>
+            {rows.map((row, i) => {
+              const label = sourceLabel(row.matchSource);
+              return (
+                <div key={i} style={{ padding: '0.75rem 1rem', border: `1px solid ${row.matchSource === 'alias' ? '#a8d5b5' : row.matchSource === 'suggestion' ? '#f5cba7' : '#dee2e6'}`, borderRadius: '8px', background: row.matchSource === 'alias' ? '#f0faf4' : row.matchSource === 'suggestion' ? '#fef9f5' : '#fff' }}>
+                  <div style={{ display: 'flex', alignItems: 'center', gap: '0.6rem', marginBottom: '0.5rem', flexWrap: 'wrap' }}>
+                    <input type="checkbox" checked={row.checked} disabled={row.selectedProductId === ''} onChange={(e) => updateRow(i, { checked: e.target.checked })} style={{ width: '18px', height: '18px', cursor: row.selectedProductId !== '' ? 'pointer' : 'not-allowed' }} />
+                    <span style={{ fontWeight: 500 }}>{row.rawName}</span>
+                    {label && (
+                      <span style={{ fontSize: '0.75rem', color: label.color, border: `1px solid ${label.color}`, borderRadius: '4px', padding: '1px 6px' }}>{label.text}</span>
+                    )}
+                  </div>
+                  <div style={{ display: 'grid', gridTemplateColumns: '1fr 80px 90px', gap: '0.5rem', alignItems: 'center' }}>
+                    <select value={row.selectedProductId} onChange={(e) => handleProductSelect(i, e.target.value)} style={{ padding: '0.35rem 0.5rem', border: '1px solid #ced4da', borderRadius: '6px', fontSize: '0.9rem' }}>
+                      <option value="">— Välj produkt —</option>
+                      {allProducts.map((p) => (
+                        <option key={p.id} value={p.id}>{p.canonicalName ?? p.name}</option>
+                      ))}
+                    </select>
+                    <input type="number" min="0" step="0.01" value={row.editQty} onChange={(e) => updateRow(i, { editQty: e.target.value })} style={{ padding: '0.35rem 0.5rem', border: '1px solid #ced4da', borderRadius: '6px', fontSize: '0.9rem' }} />
+                    <select value={row.editUnit} onChange={(e) => updateRow(i, { editUnit: e.target.value })} style={{ padding: '0.35rem 0.5rem', border: '1px solid #ced4da', borderRadius: '6px', fontSize: '0.9rem' }}>
+                      {UNITS.map((u) => <option key={u} value={u}>{u}</option>)}
+                    </select>
+                  </div>
+                  {row.selectedProductId !== '' && row.matchSource !== 'alias' && (
+                    <label style={{ display: 'flex', alignItems: 'center', gap: '0.4rem', marginTop: '0.5rem', fontSize: '0.82rem', color: '#555', cursor: 'pointer' }}>
+                      <input type="checkbox" checked={row.saveAlias} onChange={(e) => updateRow(i, { saveAlias: e.target.checked })} />
+                      Kom ihåg kopplingen — nästa gång matchas &quot;{row.rawName}&quot; automatiskt
+                    </label>
+                  )}
+                </div>
+              );
+            })}
+          </div>
+
+          <div style={{ display: 'flex', gap: '0.75rem', alignItems: 'center' }}>
+            <button onClick={handleSave} disabled={saving || checkedCount === 0} style={primaryBtn(saving || checkedCount === 0)}>
+              {saving ? 'Sparar...' : `Lägg till ${checkedCount} ${checkedCount === 1 ? 'vara' : 'varor'} i inventariet`}
+            </button>
+            <button onClick={() => { setRows([]); setPreview(null); setSelectedFile(null); if (fileRef.current) fileRef.current.value = ''; }} style={{ padding: '0.5rem 1rem', background: '#f0f0f0', border: '1px solid #ccc', borderRadius: '6px', cursor: 'pointer', fontSize: '0.9rem' }}>
+              Börja om
+            </button>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+}
+
+function primaryBtn(disabled: boolean): React.CSSProperties {
+  return { padding: '0.6rem 1.25rem', background: disabled ? '#aaa' : '#0070f3', color: '#fff', border: 'none', borderRadius: '6px', cursor: disabled ? 'not-allowed' : 'pointer', fontWeight: 600, fontSize: '0.95rem' };
 }