import { expect, test } from "@playwright/test";
import fs from "node:fs";
import path from "node:path";

const fixture = JSON.parse(fs.readFileSync(
  path.resolve(import.meta.dirname, "../../../tests/golden/M12-01D/catalog-v1.json"),
  "utf8",
)) as unknown;

test("M12-01G aborts catalog migration without changing the old IndexedDB index", async ({ page }) => {
  await page.goto("/");
  const result = await page.evaluate(async (source) => {
    const storage = await import("/src/storage/asset-catalog-indexeddb.ts");
    const open = (name: string): Promise<IDBDatabase> => new Promise((resolve, reject) => {
      const request = indexedDB.open(name, 1);
      request.onupgradeneeded = () => {
        request.result.createObjectStore("setting", { keyPath: "id" });
        request.result.createObjectStore("migration", { keyPath: "id" });
      };
      request.onsuccess = () => resolve(request.result);
      request.onerror = () => reject(request.error);
    });
    const complete = (transaction: IDBTransaction): Promise<void> => new Promise((resolve, reject) => {
      transaction.oncomplete = () => resolve();
      transaction.onerror = () => reject(transaction.error);
      transaction.onabort = () => reject(transaction.error);
    });
    const seed = async (database: IDBDatabase): Promise<void> => {
      const transaction = database.transaction(["setting", "migration"], "readwrite");
      transaction.objectStore("setting").put({ id: storage.ASSET_CATALOG_INDEX_V1_ID, value: source });
      transaction.objectStore("migration").put({ id: "schema-legacy", version: 1, marker: "unchanged" });
      await complete(transaction);
    };
    const get = (store: IDBObjectStore, id: string): Promise<unknown> => new Promise((resolve, reject) => {
      const request = store.get(id);
      request.onsuccess = () => resolve(request.result);
      request.onerror = () => reject(request.error);
    });
    const snapshot = async (database: IDBDatabase) => {
      const transaction = database.transaction(["setting", "migration"], "readonly");
      const settings = transaction.objectStore("setting");
      const migrations = transaction.objectStore("migration");
      const values = await Promise.all([
        get(settings, storage.ASSET_CATALOG_INDEX_V1_ID),
        get(settings, storage.ASSET_CATALOG_INDEX_V2_ID),
        get(migrations, storage.ASSET_CATALOG_MIGRATION_ID),
        get(migrations, "schema-legacy"),
      ]);
      await complete(transaction);
      return { version: database.version, source: values[0], target: values[1], receipt: values[2], legacy: values[3] };
    };
    const faultCode = async (database: IDBDatabase, faultAt: "AFTER_TARGET_PUT" | "AFTER_SOURCE_DELETE"): Promise<string> => {
      try {
        await storage.migrateAssetCatalogIndexedDB(database, { faultAt });
        return "";
      }
      catch (error) {
        return String((error as Error & { code?: string }).code ?? "");
      }
    };

    const databaseName = `m12-01g-${crypto.randomUUID()}`;
    let database = await open(databaseName);
    await seed(database);
    const baseline = await snapshot(database);
    const afterTargetCode = await faultCode(database, "AFTER_TARGET_PUT");
    database.close();
    database = await open(databaseName);
    const afterTargetFault = await snapshot(database);
    const afterDeleteCode = await faultCode(database, "AFTER_SOURCE_DELETE");
    database.close();
    database = await open(databaseName);
    const afterDeleteFault = await snapshot(database);
    const migrated = await storage.migrateAssetCatalogIndexedDB(database);
    const committed = await snapshot(database);
    database.close();
    indexedDB.deleteDatabase(databaseName);
    return {
      baseline,
      afterTargetCode,
      afterTargetFault,
      afterDeleteCode,
      afterDeleteFault,
      migrated: {
        status: migrated.status,
        revision: migrated.manifest.revision,
        sourceHash: migrated.receipt.sourceManifestSha256,
        targetHash: migrated.receipt.targetManifestSha256,
      },
      committed,
    };
  }, fixture);

  expect(result.afterTargetCode).toBe("STORAGE_TRANSACTION");
  expect(result.afterDeleteCode).toBe("STORAGE_TRANSACTION");
  expect(result.afterTargetFault).toEqual(result.baseline);
  expect(result.afterDeleteFault).toEqual(result.baseline);
  expect(result.baseline.version).toBe(1);
  expect(result.baseline.source).toEqual({ id: "asset-catalog:index:v1", value: fixture });
  expect(result.baseline.target).toBeUndefined();
  expect(result.baseline.receipt).toBeUndefined();
  expect(result.baseline.legacy).toEqual({ id: "schema-legacy", version: 1, marker: "unchanged" });
  expect(result.migrated).toEqual({
    status: "MIGRATED",
    revision: 7,
    sourceHash: "cbdc8b03dc9ce1f38b44bae1c7459eb273126cbd6c7dd33115d2b1966e975881",
    targetHash: "0c08ed1af1dd0998c809f76d969fd21d8fdae28ad37cf5571bdc99b16bf3ec90",
  });
  expect(result.committed.version).toBe(1);
  expect(result.committed.source).toBeUndefined();
  expect(result.committed.target).toMatchObject({ id: "asset-catalog:index:v2", value: { schemaVersion: 2, revision: 7 } });
  expect(result.committed.receipt).toMatchObject({ id: "asset-catalog:migration:v1-to-v2", task: "M12-01G", status: "MIGRATED" });
  expect(result.committed.legacy).toEqual(result.baseline.legacy);
});