/// PocketBase migration: IngTrak sync collections (custom labels + annotations).
///
/// Apply on the server (from /opt/pocketbase or wherever the binary lives):
///
///   sudo cp this_file /opt/pocketbase/pb_migrations/
///   sudo chown pocketbase:pocketbase /opt/pocketbase/pb_migrations/*.js
///   sudo -u pocketbase /opt/pocketbase/pocketbase migrate up
///   sudo systemctl restart pocketbase
///
/// Auth collection must already exist as `usersapp`.
/// Built-in labels stay in the Flutter app — only custom labels sync.
migrate((app) => {
  const users = app.findCollectionByNameOrId("usersapp");

  const ownerRules = {
    listRule: "user = @request.auth.id",
    viewRule: "user = @request.auth.id",
    createRule: "@request.auth.id != '' && user = @request.auth.id",
    updateRule: "user = @request.auth.id",
    deleteRule: "user = @request.auth.id",
  };

  // --- custom labels (TxLabel where custom == true + labelParents) ---
  const labels = new Collection({
    type: "base",
    name: "labels",
    ...ownerRules,
    fields: [
      {
        type: "relation",
        name: "user",
        required: true,
        collectionId: users.id,
        cascadeDelete: true,
        maxSelect: 1,
      },
      {
        // App-side id, e.g. "custom_ah" (not the PocketBase record id)
        type: "text",
        name: "client_id",
        required: true,
        min: 1,
        max: 80,
      },
      {
        type: "text",
        name: "name",
        required: true,
        min: 1,
        max: 80,
      },
      {
        // Flutter Color.value (ARGB int)
        type: "number",
        name: "color",
        required: true,
        onlyInt: true,
      },
      {
        // Parent label client_id (builtin or custom); empty = root
        type: "text",
        name: "parent_client_id",
        required: false,
        max: 80,
      },
    ],
    indexes: [
      "CREATE UNIQUE INDEX idx_labels_user_client ON labels (user, client_id)",
    ],
  });
  app.save(labels);

  // --- per-transaction overlays (TxMetaStoreData.byId) ---
  const txMeta = new Collection({
    type: "base",
    name: "tx_meta",
    ...ownerRules,
    fields: [
      {
        type: "relation",
        name: "user",
        required: true,
        collectionId: users.id,
        cascadeDelete: true,
        maxSelect: 1,
      },
      {
        // BankTransaction.id → "date|currency|amount|description"
        type: "text",
        name: "tx_id",
        required: true,
        min: 1,
        max: 2000,
      },
      {
        type: "json",
        name: "label_ids",
        required: false,
      },
      {
        type: "bool",
        name: "recurring",
        required: false,
      },
      {
        type: "bool",
        name: "internal_transfer",
        required: false,
      },
      {
        type: "text",
        name: "notes",
        required: false,
        max: 4000,
      },
    ],
    indexes: [
      "CREATE UNIQUE INDEX idx_tx_meta_user_tx ON tx_meta (user, tx_id)",
    ],
  });
  app.save(txMeta);

  // --- merchant auto-label / notes rules (labelsByMerchant + notesByMerchant) ---
  const merchantRules = new Collection({
    type: "base",
    name: "merchant_rules",
    ...ownerRules,
    fields: [
      {
        type: "relation",
        name: "user",
        required: true,
        collectionId: users.id,
        cascadeDelete: true,
        maxSelect: 1,
      },
      {
        // merchantKeyFromDescription(...) e.g. "albert heijn"
        type: "text",
        name: "merchant_key",
        required: true,
        min: 1,
        max: 200,
      },
      {
        type: "json",
        name: "label_ids",
        required: false,
      },
      {
        type: "text",
        name: "notes",
        required: false,
        max: 4000,
      },
    ],
    indexes: [
      "CREATE UNIQUE INDEX idx_merchant_rules_user_key ON merchant_rules (user, merchant_key)",
    ],
  });
  app.save(merchantRules);

  // --- exact amount+description templates (exactTemplates / TxExactTemplate) ---
  const exactTemplates = new Collection({
    type: "base",
    name: "exact_templates",
    ...ownerRules,
    fields: [
      {
        type: "relation",
        name: "user",
        required: true,
        collectionId: users.id,
        cascadeDelete: true,
        maxSelect: 1,
      },
      {
        // BankTransaction.exactKey → "descriptionKey|amount|currency"
        type: "text",
        name: "exact_key",
        required: true,
        min: 1,
        max: 2000,
      },
      {
        type: "text",
        name: "notes",
        required: false,
        max: 4000,
      },
      {
        type: "bool",
        name: "recurring",
        required: false,
      },
      {
        type: "bool",
        name: "internal_transfer",
        required: false,
      },
    ],
    indexes: [
      "CREATE UNIQUE INDEX idx_exact_templates_user_key ON exact_templates (user, exact_key)",
    ],
  });
  app.save(exactTemplates);
}, (app) => {
  for (const name of [
    "exact_templates",
    "merchant_rules",
    "tx_meta",
    "labels",
  ]) {
    try {
      app.delete(app.findCollectionByNameOrId(name));
    } catch (_) {}
  }
});