import { readFile } from "node:fs/promises";
import { describe, expect, it } from "vitest";

const fixtureUrl = new URL("../contracts/settings/runtime-v1.json", import.meta.url);
const runtimeSettingsMigrationUrl = new URL(
  "../database/migrations/0003_platform_runtime_settings.sql",
  import.meta.url
);
const applicationUrl = new URL("../backend/internal/application/application.go", import.meta.url);
const runtimeUrl = new URL("../backend/internal/application/runtime.go", import.meta.url);
const settingsServiceUrl = new URL("../backend/internal/settings/service.go", import.meta.url);

describe("Go runtime settings compatibility fixture", () => {
  it("freezes the editable whitelist and secret projection rules", async () => {
    const fixture = JSON.parse(await readFile(fixtureUrl, "utf8"));
    expect(fixture).toMatchObject({
      version: 1,
      fileName: ".env.local",
      emptySecretInput: "preserve",
      emptyNonSecretInput: "write-empty",
      publicSecretValue: "blank",
      runtimeApplication: "mixed",
      providerRuntimeApplication: "immediate",
      providerPersistence: "postgres-with-environment-fallback",
      settingsPersistence: "postgres-with-environment-fallback"
    });
    expect(fixture.allowedKeys).toContain("IMAGE_GENERATE_ENGINE");
    expect(fixture.secretKeys).toContain("ALI_OSS_ACCESS_KEY_SECRET");
    expect(fixture.allowedKeys).not.toContain("DATABASE_URL");
    expect([...fixture.databaseBackedKeys].sort()).toEqual([...fixture.allowedKeys].sort());
  });

  it("requires a PostgreSQL table for all mutable settings", async () => {
    const migration = await readFile(runtimeSettingsMigrationUrl, "utf8");
    expect(migration).toContain("create table if not exists platform_runtime_settings");
    expect(migration).toContain("setting_key text primary key");
    expect(migration).toContain("setting_value text not null");
  });

  it("loads database settings for startup services and refreshes provider calls", async () => {
    const [application, runtime, service] = await Promise.all([
      readFile(applicationUrl, "utf8"),
      readFile(runtimeUrl, "utf8"),
      readFile(settingsServiceUrl, "utf8")
    ]);
    expect(application).toContain("databaseSettingsService(getenv, repository)");
    expect(application).toContain("runtimeSettingsGetenv(ctx, getenv, runtimeSettings)");
    expect(application).toContain("ParseAuthConfig(startupGetenv)");
    expect(application).toContain("configuredOSSBlobStore(startupGetenv)");
    expect(application).toContain("newRuntimeProviderResolver(getenv, runtimeSettings)");
    expect(application).toContain("runtimeProviderJobBuilder{");
    expect(runtime).toContain("runtimeSettingsGetenv(ctx, builder.fallback, builder.settings)");
    expect(runtime).toContain("runtimeSettingsGetenv(ctx, resolver.fallback, resolver.settings)");
    expect(service).toContain("values override process/file values");
    expect(application).not.toContain("validateProductionProviderConfiguration");
  });
});