import type { ModuleManifest } from "@ekklesia/contracts";
import { describe, expect, it, vi } from "vitest";
import { createPermissionRegistry } from "../src/authorization/index.js";
import { createDoctorOptions } from "../src/cli/doctor.js";
import {
  type DoctorCheck,
  type DoctorDependencies,
  diagnoseEkklesia,
  formatDoctorReport,
} from "../src/diagnostics/index.js";
import {
  type DiscoveredModule,
  discoverModules,
  type ModuleMigrationAggregate,
  type ModuleSchemaAggregate,
} from "../src/modules/index.js";

/**
 * The bug this suite exists for was operational, not theoretical: `pnpm doctor` built its own
 * `DoctorOptions` and simply never included object storage or module secrets, so a correctly
 * configured installation was told its storage was "not configured" and every module requiring a
 * bucket was reported blocked — while `startApi`, from the identical environment, ran them.
 *
 * These tests therefore go through `createDoctorOptions`, the exact function the CLI calls, with an
 * environment fixture rather than a hand-built options object. A helper-only test would have passed
 * happily on the broken code.
 */

const databaseUrl = "postgres://ekklesia@db.example.org:5432/ekklesia";
const accessKey = "AKIAEXAMPLEACCESSID";
const secretKey = "sk-example-secret-material";
const smtpPassword = "sup3r-secret-relay-password";
const identitySecret = "b7QwZ2rTn4Xs9LmVpKdF6yHc3JgEuNaW";
const moduleSecret = "module-secret-material";

const metadata = Object.freeze({
  moduleSdkVersion: "0.1.0",
  platformVersion: "0.1.0",
  repositoryRoot: "/not-rendered",
  runtimeRange: ">=24.11.0 <25",
  runtimeVersion: "24.15.0",
});

function environment(
  overrides: Readonly<Record<string, string | undefined>> = {},
): Readonly<Record<string, string | undefined>> {
  return {
    DATABASE_URL: databaseUrl,
    EKKLESIA_IDENTITY_BASE_URL: "https://ekklesia.example.org",
    EKKLESIA_IDENTITY_SECRET: identitySecret,
    EKKLESIA_IDENTITY_TRUSTED_ORIGINS: "https://ekklesia.example.org",
    NODE_ENV: "production",
    ...overrides,
  };
}

const storageEnvironment = Object.freeze({
  S3_ACCESS_KEY: accessKey,
  S3_ENDPOINT: "https://storage.example.org",
  S3_SECRET_KEY: secretKey,
});

const mailEnvironment = Object.freeze({
  EKKLESIA_SMTP_FROM_ADDRESS: "noreply@example.org",
  EKKLESIA_SMTP_HOST: "smtp.example.org",
  EKKLESIA_SMTP_PASSWORD: smtpPassword,
  EKKLESIA_SMTP_SECURITY: "starttls",
  EKKLESIA_SMTP_USERNAME: "relay@example.org",
});

function discoveredModule(id: string, overrides: Record<string, unknown> = {}): DiscoveredModule {
  return {
    contributions: [],
    directory: `/unpublished/${id}`,
    entrypoints: { server: `/unpublished/${id}/server.js` },
    manifest: {
      capabilities: [],
      compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
      configuration: [],
      dependencies: {
        capabilities: { optional: {}, required: {} },
        modules: { optional: {}, required: {} },
      },
      entrypoints: { server: "./dist/server.js" },
      id,
      manifestVersion: 7,
      name: `${id} module`,
      permissions: [],
      storage: { buckets: [] },
      version: "0.1.0",
      ...overrides,
    } as unknown as ModuleManifest,
    manifestPath: `/unpublished/${id}/ekklesia.module.json`,
    packageName: `@test/${id}`,
  };
}

const storingModule = discoveredModule("announcements", {
  storage: { buckets: [{ id: "announcement-assets" }] },
});

const secretRequiringModule = discoveredModule("announcements", {
  configuration: [{ key: "storageCredential", required: true, type: "secret" }],
});

function schemaAggregate(): ModuleSchemaAggregate {
  return Object.freeze({
    discoveredModules: Object.freeze([]),
    drizzleSchema: Object.freeze({}),
    modules: Object.freeze([]),
    tables: Object.freeze([]),
  });
}

function migrationAggregate(): ModuleMigrationAggregate {
  return Object.freeze({
    discoveredModules: Object.freeze([]),
    migrations: Object.freeze([]),
    modules: Object.freeze([]),
  });
}

function dependencies(overrides: Partial<DoctorDependencies> = {}): DoctorDependencies {
  return {
    composePermissions: vi.fn((modules: readonly DiscoveredModule[]) =>
      createPermissionRegistry(
        modules.flatMap((discovered) => [...discovered.manifest.permissions]),
      ),
    ),
    createMigrationDatabase: vi.fn(() => {
      throw new Error("not used");
    }),
    discoverMigrations: vi.fn(async () => migrationAggregate()),
    discoverModules: vi.fn(async () => Object.freeze([])),
    discoverSchemas: vi.fn(async () => schemaAggregate()),
    planMigrations: vi.fn(async () => {
      throw new Error("not used");
    }),
    probeMail: vi.fn(async () => undefined),
    probeStorage: vi.fn(async () => undefined),
    readModuleConfiguration: vi.fn(async () => Object.freeze({ records: Object.freeze([]) })),
    readModuleLifecycle: vi.fn(async () => Object.freeze({ modules: Object.freeze([]) })),
    runtimeSatisfies: vi.fn(() => true),
    ...overrides,
  };
}

async function diagnose(
  env: Readonly<Record<string, string | undefined>>,
  services: DoctorDependencies = dependencies(),
): Promise<{ readonly report: Awaited<ReturnType<typeof diagnoseEkklesia>> }> {
  return { report: await diagnoseEkklesia(createDoctorOptions(env, metadata), services) };
}

function check(
  report: Awaited<ReturnType<typeof diagnoseEkklesia>>,
  id: DoctorCheck["id"],
): DoctorCheck {
  const found = report.checks.find((candidate) => candidate.id === id);
  if (!found) {
    throw new Error(`Missing test check ${id}.`);
  }
  return found;
}

describe("Doctor host-configuration parity — object storage", () => {
  it("recognizes configured object storage from the deployment environment", async () => {
    const services = dependencies();

    const { report } = await diagnose(environment(storageEnvironment), services);
    const integration = check(report, "object-storage.integration");

    // The regression itself: before this pass the CLI passed no storage at all and this read
    // "skipped · Object storage not configured" from exactly this environment.
    expect(integration.status).toBe("pass");
    expect(integration.summary).toBe("Object storage reachable");
    expect(services.probeStorage).toHaveBeenCalledWith({
      accessKey,
      bucketPrefix: "ekklesia",
      deliveryEndpoint: "https://storage.example.org",
      endpoint: "https://storage.example.org",
      forcePathStyle: true,
      region: "us-east-1",
      secretKey,
    });
  });

  it("still reports genuinely absent storage as absent", async () => {
    const services = dependencies();

    const { report } = await diagnose(environment(), services);
    const integration = check(report, "object-storage.integration");

    expect(integration.status).toBe("skipped");
    expect(integration.summary).toBe("Object storage not configured");
    expect(services.probeStorage).not.toHaveBeenCalled();
  });

  it("reports a half-configured provider as a configuration failure, naming no value", async () => {
    const services = dependencies();

    const { report } = await diagnose(
      environment({ S3_ENDPOINT: "https://storage.example.org" }),
      services,
    );
    const integration = check(report, "object-storage.integration");

    // `startApi` refuses to start on this input, so the deployment is genuinely not ready — this is
    // a failure rather than the warning an unreachable-but-valid provider gets.
    expect(integration.status).toBe("failure");
    expect(integration.details[0]).toBe(
      "The object-storage settings were rejected: STORAGE_ACCESS_KEY_MISSING.",
    );
    expect(report.result).toBe("not-ready");
    // Nothing was connected to: a malformed configuration must not produce network traffic.
    expect(services.probeStorage).not.toHaveBeenCalled();
  });

  it("reports a malformed endpoint safely rather than crashing the command", async () => {
    const { report } = await diagnose(
      environment({ ...storageEnvironment, S3_ENDPOINT: "not-a-url" }),
    );
    const integration = check(report, "object-storage.integration");

    expect(integration.status).toBe("failure");
    expect(integration.details[0]).toBe(
      "The object-storage settings were rejected: STORAGE_ENDPOINT_INVALID.",
    );
    expect(JSON.stringify(integration)).not.toContain("not-a-url");
  });

  it("refuses a plaintext production endpoint exactly as startup would", async () => {
    const { report } = await diagnose(
      environment({ ...storageEnvironment, S3_ENDPOINT: "http://storage.example.org" }),
    );

    expect(check(report, "object-storage.integration").details[0]).toBe(
      "The object-storage settings were rejected: STORAGE_ENDPOINT_INSECURE_IN_PRODUCTION.",
    );
  });

  it("applies the same region and bucket-prefix defaults the runtime applies", async () => {
    const services = dependencies();

    await diagnose(environment(storageEnvironment), services);

    expect(services.probeStorage).toHaveBeenCalledWith(
      expect.objectContaining({
        bucketPrefix: "ekklesia",
        forcePathStyle: true,
        region: "us-east-1",
      }),
    );
  });

  it("defaults the browser delivery origin to the endpoint, and flags a separate one", async () => {
    const { report: shared } = await diagnose(environment(storageEnvironment));
    expect(check(shared, "object-storage.integration").details).toHaveLength(1);

    const { report: separate } = await diagnose(
      environment({ ...storageEnvironment, S3_DELIVERY_ENDPOINT: "https://files.example.org" }),
    );
    const integration = check(separate, "object-storage.integration");
    expect(integration.details[0]).toContain("browser delivery https://files.example.org");
    expect(integration.details[1]).toContain("was not probed");
  });

  it("binds a module's declared bucket instead of reporting it blocked", async () => {
    const services = dependencies({
      discoverModules: vi.fn(async () => Object.freeze([storingModule])),
    });

    const { report } = await diagnose(environment(storageEnvironment), services);

    // The operator-visible consequence of the bug: this module was reported blocked by a Doctor run
    // against the very environment that ran it.
    expect(check(report, "object-storage.bindings").status).toBe("pass");
    expect(check(report, "modules.lifecycle").details).toContain("announcements 0.1.0 · enabled");
  });

  it("still reports a bucket as unbound when no provider is configured", async () => {
    const services = dependencies({
      discoverModules: vi.fn(async () => Object.freeze([storingModule])),
    });

    const { report } = await diagnose(environment(), services);

    expect(check(report, "object-storage.bindings").status).toBe("failure");
    expect(check(report, "modules.lifecycle").details).toContain(
      "announcements 0.1.0 · blocked · storage_unavailable · announcement-assets",
    );
  });

  it("treats a malformed provider as unusable when deciding module eligibility", async () => {
    const services = dependencies({
      discoverModules: vi.fn(async () => Object.freeze([storingModule])),
    });

    const { report } = await diagnose(
      environment({ S3_ENDPOINT: "https://storage.example.org" }),
      services,
    );

    // A provider that cannot be constructed cannot bind a bucket, and saying otherwise would report
    // a module as runnable that startup would refuse to start at all.
    expect(check(report, "object-storage.bindings").status).toBe("failure");
  });
});

describe("Doctor host-configuration parity — module secrets", () => {
  it("sees a secret the deployment actually set", async () => {
    const services = dependencies({
      discoverModules: vi.fn(async () => Object.freeze([secretRequiringModule])),
    });

    const { report } = await diagnose(
      environment({
        EKKLESIA_MODULE_SECRET__ANNOUNCEMENTS__STORAGE_CREDENTIAL: moduleSecret,
      }),
      services,
    );
    const configuration = check(report, "modules.configuration");

    // Same class of bug as storage: the CLI never passed a secret source, so a configured secret
    // was always reported missing.
    expect(configuration.status).toBe("pass");
    expect(check(report, "modules.lifecycle").details).toContain("announcements 0.1.0 · enabled");
    expect(JSON.stringify(report)).not.toContain(moduleSecret);
  });

  it("still reports a genuinely unset secret as missing", async () => {
    const services = dependencies({
      discoverModules: vi.fn(async () => Object.freeze([secretRequiringModule])),
    });

    const { report } = await diagnose(environment(), services);

    expect(check(report, "modules.configuration").status).toBe("warning");
    expect(check(report, "modules.lifecycle").details).toContain(
      "announcements 0.1.0 · blocked · secret_missing · storageCredential",
    );
  });
});

describe("Doctor host-configuration parity — outbound email regression", () => {
  it("leaves an installation with no SMTP host reported as complete", async () => {
    const services = dependencies();

    const { report } = await diagnose(environment(), services);
    const mailCheck = check(report, "outbound-email.configuration");

    expect(mailCheck.status).toBe("skipped");
    expect(mailCheck.summary).toBe("Outbound email not configured");
    expect(services.probeMail).not.toHaveBeenCalled();
  });

  it("leaves a configured relay reported as reachable, without its password", async () => {
    const services = dependencies();

    const { report } = await diagnose(environment(mailEnvironment), services);
    const mailCheck = check(report, "outbound-email.configuration");

    expect(mailCheck.status).toBe("pass");
    expect(services.probeMail).toHaveBeenCalledTimes(1);
    expect(JSON.stringify(mailCheck)).not.toContain(smtpPassword);
  });

  it("probes with the SMTP client identity the runtime would use, and reports it", async () => {
    const services = dependencies();

    const { report } = await diagnose(
      environment({ ...mailEnvironment, EKKLESIA_SMTP_HELO_NAME: "mail.example.org" }),
      services,
    );
    const mailCheck = check(report, "outbound-email.configuration");

    // Doctor builds its provider from the same validated configuration `startApi` does, so a relay
    // that refuses the greeting fails here rather than only when a reset email silently never
    // arrives. The name is announced in the clear on every connection, so showing it leaks nothing.
    expect(services.probeMail).toHaveBeenCalledWith(
      expect.objectContaining({ heloName: "mail.example.org" }),
    );
    expect(mailCheck.details[0]).toContain("HELO mail.example.org");
    expect(JSON.stringify(mailCheck)).not.toContain(smtpPassword);
  });

  it("reports a malformed SMTP client identity as a typed failure, naming no value", async () => {
    const { report } = await diagnose(
      environment({ ...mailEnvironment, EKKLESIA_SMTP_HELO_NAME: "smtp://internal-host:2525" }),
    );
    const mailCheck = check(report, "outbound-email.configuration");

    expect(mailCheck.status).toBe("failure");
    expect(mailCheck.details[0]).toBe("The SMTP settings were rejected: MAIL_HELO_NAME_INVALID.");
    expect(JSON.stringify(mailCheck)).not.toContain("internal-host");
  });

  it("leaves a malformed SMTP setting reported as a typed configuration failure", async () => {
    const { report } = await diagnose(
      environment({ ...mailEnvironment, EKKLESIA_SMTP_PORT: "70000" }),
    );
    const mailCheck = check(report, "outbound-email.configuration");

    expect(mailCheck.status).toBe("failure");
    expect(mailCheck.details[0]).toBe("The SMTP settings were rejected: MAIL_PORT_INVALID.");
    expect(JSON.stringify(mailCheck)).not.toContain("70000");
  });

  it("still refuses a plaintext production relay", async () => {
    const { report } = await diagnose(
      environment({ ...mailEnvironment, EKKLESIA_SMTP_SECURITY: "plaintext" }),
    );

    expect(check(report, "outbound-email.configuration").details[0]).toBe(
      "The SMTP settings were rejected: MAIL_SECURITY_INSECURE_IN_PRODUCTION.",
    );
  });
});

describe("Doctor host-configuration parity — sanitization", () => {
  it("prints no secret material anywhere in a fully configured report", async () => {
    const services = dependencies({
      discoverModules: vi.fn(async () => Object.freeze([storingModule])),
    });

    const { report } = await diagnose(
      environment({
        ...mailEnvironment,
        ...storageEnvironment,
        EKKLESIA_MODULE_SECRET__ANNOUNCEMENTS__STORAGE_CREDENTIAL: moduleSecret,
      }),
      services,
    );
    const rendered = formatDoctorReport(report).join("\n");

    for (const secret of [accessKey, secretKey, smtpPassword, identitySecret, moduleSecret]) {
      expect(rendered).not.toContain(secret);
      expect(JSON.stringify(report)).not.toContain(secret);
    }
    // The infrastructure host names are deliberately still shown: they carry no credential and are
    // what an operator needs in order to act on the report.
    expect(rendered).toContain("https://storage.example.org");
    expect(rendered).toContain("smtp.example.org");
  });

  it("never serializes the environment object wholesale", async () => {
    const services = dependencies();

    const { report } = await diagnose(
      environment({ ...storageEnvironment, TOTALLY_UNRELATED_SECRET: "unrelated-value" }),
      services,
    );

    expect(JSON.stringify(report)).not.toContain("unrelated-value");
    expect(JSON.stringify(report)).not.toContain("S3_ACCESS_KEY");
  });
});

describe("Doctor reads the modules directory from the same host configuration (ADR 0048)", () => {
  it("uses the repository's own modules directory when EKKLESIA_MODULES_DIR is unset", () => {
    const doctorOptions = createDoctorOptions(environment(), metadata);
    expect(doctorOptions.moduleDiscovery.modulesDirectory).toBe("/not-rendered/modules");
    expect(doctorOptions.moduleDiscovery.modulesDirectoryRequired).toBe(false);
    expect(doctorOptions.coreMigrationsDirectory).toBe("/not-rendered/core/drizzle");
  });

  it("uses a configured directory, and still finds Core's migrations under the platform", () => {
    const doctorOptions = createDoctorOptions(
      environment({ EKKLESIA_MODULES_DIR: "/var/lib/ekklesia/modules" }),
      metadata,
    );
    expect(doctorOptions.moduleDiscovery.modulesDirectory).toBe("/var/lib/ekklesia/modules");
    expect(doctorOptions.moduleDiscovery.modulesDirectoryRequired).toBe(true);
    expect(doctorOptions.coreMigrationsDirectory).toBe("/not-rendered/core/drizzle");
  });

  it("hands an unusable value to discovery to report, rather than throwing before a report exists", async () => {
    const doctorOptions = createDoctorOptions(
      environment({ EKKLESIA_MODULES_DIR: "relative/private-mount-91aa" }),
      metadata,
    );
    expect(doctorOptions.moduleDiscovery.modulesDirectoryRequired).toBe(true);
    const report = await diagnoseEkklesia(doctorOptions, dependencies({ discoverModules }));
    expect(report.checks.find((entry) => entry.id === "modules.discovery")?.status).toBe("failure");
    expect(JSON.stringify(report)).not.toContain("private-mount-91aa");
  });
});