Zakupy

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[];\n return (res.rows ?? []).map((r: any) =>\n Object.fromEntries(cols.map((c, i) => [c, Array.isArray(r) ? r[i] : r[c]]))\n );\n}\n\n// usuwa listy nietknięte od tygodnia (razem z pozycjami)\nasync function sweep() {\n const cutoff = Date.now() - WEEK;\n await sqlite.execute({\n sql:\n `DELETE FROM items WHERE list_id IN (SELECT id FROM lists WHERE last_active < ?)`,\n args: [cutoff],\n });\n await sqlite.execute({\n sql: `DELETE FROM lists WHERE last_active < ?`,\n args: [cutoff],\n });\n}\n\nconst token = () =>\n Array.from(crypto.getRandomValues(new Uint8Array(10)))\n .map((n) => ALPHABET[n % ALPHABET.length])\n .join(\"\");\n\nconst FIELDS = [\"name\", \"ord\", \"checked\", \"deleted\"] as const;\nconst wins = (ac: number, ad: string, bc: number, bd: string) =>\n ac !== bc ? ac > bc : (ad ?? \"\") > (bd ?? \"\");\n\nasync function merge(listId: string, incoming: any[]) {\n const ids = incoming.map((i) => i.id);\n const ph = ids.map(() => \"?\").join(\",\");\n const existing = ids.length\n ? await q(`SELECT * FROM items WHERE list_id = ? AND id IN (${ph})`, [\n listId,\n ...ids,\n ])\n : [];\n const byId = new Map(existing.map((r: any) => [r.id, r]));\n\n const row = await q(`SELECT seq FROM lists WHERE id = ?`, [listId]);\n let seq = Number(row[0]?.seq ?? 0);\n\n for (const inc of incoming) {\n const cur: any = byId.get(inc.id);\n const out: any = { id: inc.id };\n let changed = false;\n for (const f of FIELDS) {\n const ic = Number(inc[f + \"_c\"] ?? 0), id_ = String(inc[f + \"_d\"] ?? \"\");\n const cc = Number(cur?.[f + \"_c\"] ?? -1),\n cd = String(cur?.[f + \"_d\"] ?? \"\");\n if (!cur || wins(ic, id_, cc, cd)) {\n out[f] = inc[f];\n out[f + \"_c\"] = ic;\n out[f + \"_d\"] = id_;\n changed = true;\n } else {\n out[f] = cur[f];\n out[f + \"_c\"] = cc;\n out[f + \"_d\"] = cd;\n }\n }\n if (!changed) continue;\n seq++;\n await sqlite.execute({\n sql: `INSERT INTO items (list_id,id,name,name_c,name_d,ord,ord_c,ord_d,\n checked,checked_c,checked_d,deleted,deleted_c,deleted_d,seq)\n VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)\n ON CONFLICT(list_id,id) DO UPDATE SET\n name=excluded.name,name_c=excluded.name_c,name_d=excluded.name_d,\n ord=excluded.ord,ord_c=excluded.ord_c,ord_d=excluded.ord_d,\n checked=excluded.checked,checked_c=excluded.checked_c,checked_d=excluded.checked_d,\n deleted=excluded.deleted,deleted_c=excluded.deleted_c,deleted_d=excluded.deleted_d,\n seq=excluded.seq`,\n args: [\n listId,\n out.id,\n out.name,\n out.name_c,\n out.name_d,\n out.ord,\n out.ord_c,\n out.ord_d,\n out.checked ? 1 : 0,\n out.checked_c,\n out.checked_d,\n out.deleted ? 1 : 0,\n out.deleted_c,\n out.deleted_d,\n seq,\n ],\n });\n }\n return seq;\n}\n\nconst json = (data: any) =>\n new Response(JSON.stringify(data), {\n headers: {\n \"content-type\": \"application/json\",\n \"referrer-policy\": \"no-referrer\",\n },\n });\n\nexport default async function (req: Request): Promise {\n await init();\n const url = new URL(req.url);\n const path = url.pathname;\n\n if (path === \"/api/new\" && req.method === \"POST\") {\n await sweep();\n const id = token();\n await sqlite.execute({\n sql: `INSERT INTO lists (id, seq, last_active) VALUES (?, 0, ?)`,\n args: [id, Date.now()],\n });\n return json({ id });\n }\n\n const api = path.match(/^\\/api\\/([a-z2-9]{10})$/);\n if (api) {\n const listId = api[1];\n const cur = await q(\n `SELECT seq, name, name_c, name_d FROM lists WHERE id = ?`,\n [listId],\n );\n if (!cur.length) return json({ gone: true });\n\n // nazwa listy jest osobnym rejestrem LWW — nie przechodzi przez merge() pozycji\n let nm: string | null = cur[0].name ?? null;\n let nmC = Number(cur[0].name_c ?? 0);\n let nmD = String(cur[0].name_d ?? \"\");\n\n let seq: number | null = null;\n if (req.method === \"POST\") {\n const body = await req.json();\n seq = await merge(listId, body.items ?? []);\n const L = body.list;\n if (L && wins(Number(L.name_c ?? 0), String(L.name_d ?? \"\"), nmC, nmD)) {\n nm = L.name ?? null;\n nmC = Number(L.name_c ?? 0);\n nmD = String(L.name_d ?? \"\");\n }\n }\n await sqlite.execute({\n sql: `UPDATE lists SET last_active = ?, seq = COALESCE(?, seq),\n name = ?, name_c = ?, name_d = ? WHERE id = ?`,\n args: [Date.now(), seq, nm, nmC, nmD, listId],\n });\n\n const since = Number(url.searchParams.get(\"since\") ?? 0);\n const items = await q(\n `SELECT id,name,name_c,name_d,ord,ord_c,ord_d,checked,checked_c,checked_d,\n deleted,deleted_c,deleted_d,seq FROM items WHERE list_id = ? AND seq > ?`,\n [listId, since],\n );\n const head = await q(`SELECT seq FROM lists WHERE id = ?`, [listId]);\n if (Math.random() < 0.02) await sweep();\n return json({\n seq: Number(head[0]?.seq ?? 0),\n name: nm,\n name_c: nmC,\n name_d: nmD,\n items,\n });\n }\n\n return new Response(HTML, {\n headers: {\n \"content-type\": \"text/html; charset=utf-8\",\n \"referrer-policy\": \"no-referrer\",\n },\n });\n}\n\nconst HTML = `\nZakupy\n\n\n\n

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