import { afterEach, describe, expect, it } from "vitest";
import {
  type DoctorDependencies,
  diagnoseEkklesia,
  formatDoctorReport,
} from "../src/diagnostics/index.js";
import type { MigrationDatabase } from "../src/migrations/index.js";
import type { ModuleMigrationAggregate, ModuleSchemaAggregate } from "../src/modules/index.js";
import { composePlatformPermissionRegistry } from "../src/modules/permissions.js";

const originalNoColor = process.env.NO_COLOR;

afterEach(() => {
  if (originalNoColor === undefined) {
    delete process.env.NO_COLOR;
  } else {
    process.env.NO_COLOR = originalNoColor;
  }
});

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

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

function noConfigurationDependencies(): DoctorDependencies {
  return {
    composePermissions: composePlatformPermissionRegistry,
    createMigrationDatabase: () => {
      throw new Error("database must not be constructed");
    },
    discoverMigrations: async () => zeroMigrationAggregate(),
    discoverModules: async () => Object.freeze([]),
    discoverSchemas: async () => zeroSchemaAggregate(),
    planMigrations: async () => {
      throw new Error("database must not be planned");
    },
    probeStorage: async () => {
      throw new Error("storage must not be probed");
    },
    readModuleConfiguration: async () => {
      throw new Error("module configuration must not be read");
    },
    readModuleLifecycle: async () => {
      throw new Error("module lifecycle configuration must not be read");
    },
    runtimeSatisfies: () => true,
  };
}

describe("Ekklesia Doctor terminal report", () => {
  it("renders the real zero-module and no-database shape exactly", async () => {
    const report = await diagnoseEkklesia(
      {
        moduleDiscovery: {
          moduleSdkVersion: "0.1.0",
          modulesDirectory: "/not-rendered/modules",
          platformVersion: "0.1.0",
        },
        runtimeRange: ">=24.11.0 <25",
        runtimeVersion: "24.15.0",
      },
      noConfigurationDependencies(),
    );

    expect(formatDoctorReport(report).join("\n")).toBe(`Ekklesia Doctor

Platform
  ✓ Runtime version supported
    Active Node.js satisfies the declared supported range.

Modules
  ✓ Module discovery complete
    0 modules installed
  ✓ Dependency graph valid
    Dependency order is empty.
  ✓ Permission registry composed
    5 permissions registered
  ○ Module lifecycle skipped
    DATABASE_URL is not configured.
  ○ Module configuration skipped
    DATABASE_URL is not configured.

Data definitions
  ✓ Schemas validated
    0 modules · 0 tables
  ✓ Migrations validated
    0 migrations · checksums valid

PostgreSQL
  ✓ Database TLS verified
    TLS required with certificate and hostname verification.
  ○ Connection check skipped
    DATABASE_URL is not configured.
  ○ Migration plan skipped
    A validated migration inventory and configured PostgreSQL connection are required.

Identity
  ○ Identity configuration skipped
    Core identity schema defines 4 tables (ekklesia_core_account, ekklesia_core_session, ekklesia_core_user, ekklesia_core_verification).
    Identity runtime configuration (signing key, base URL, trusted origins) is not set.
  ✓ Direct client-address mode
    Trusts only the actual immediate socket peer for rate limiting; no forwarded header is trusted.

Object storage
  ○ Object storage not configured
    No S3_ENDPOINT is set. This is a complete deployment unless a module requires storage.
  ✓ No module requires object storage
    0 modules declare a logical storage bucket.

Result: READY WITH WARNINGS`);
  });

  it("does not depend on NO_COLOR or terminal interactivity", async () => {
    const report = await diagnoseEkklesia(
      {
        moduleDiscovery: {
          moduleSdkVersion: "0.1.0",
          modulesDirectory: "/not-rendered/modules",
          platformVersion: "0.1.0",
        },
        runtimeRange: ">=24.11.0 <25",
        runtimeVersion: "24.15.0",
      },
      noConfigurationDependencies(),
    );
    const baseline = formatDoctorReport(report);
    const originalIsTtyDescriptor = Object.getOwnPropertyDescriptor(process.stdout, "isTTY");

    try {
      process.env.NO_COLOR = "1";
      Object.defineProperty(process.stdout, "isTTY", { configurable: true, value: true });
      const interactiveWithoutColor = formatDoctorReport(report);
      process.env.NO_COLOR = "";
      Object.defineProperty(process.stdout, "isTTY", { configurable: true, value: false });
      const nonInteractive = formatDoctorReport(report);

      expect(interactiveWithoutColor).toEqual(baseline);
      expect(nonInteractive).toEqual(baseline);
      expect(interactiveWithoutColor.some((line) => line.includes("\u001B"))).toBe(false);
      expect(Object.isFrozen(interactiveWithoutColor)).toBe(true);
    } finally {
      if (originalIsTtyDescriptor) {
        Object.defineProperty(process.stdout, "isTTY", originalIsTtyDescriptor);
      } else {
        delete (process.stdout as { isTTY?: boolean }).isTTY;
      }
    }
  });

  it("never renders secrets from a hostile database exception", async () => {
    const hostile =
      "postgresql://admin:secret@host.invalid/db SELECT password FROM users /home/me/.env";
    const database = Object.freeze({}) as MigrationDatabase;
    const dependencies: DoctorDependencies = {
      ...noConfigurationDependencies(),
      createMigrationDatabase: () => database,
      planMigrations: async () => {
        throw new Error(hostile);
      },
    };
    const report = await diagnoseEkklesia(
      {
        databaseUrl: "postgresql://another:secret@host.invalid/db",
        moduleDiscovery: {
          moduleSdkVersion: "0.1.0",
          modulesDirectory: "/not-rendered/modules",
          platformVersion: "0.1.0",
        },
        runtimeRange: ">=24.11.0 <25",
        runtimeVersion: "24.15.0",
      },
      dependencies,
    );
    const output = formatDoctorReport(report).join("\n");

    for (const forbidden of [
      "admin",
      "secret",
      "host.invalid",
      "SELECT",
      "password",
      "/home/me",
      "postgresql://",
    ]) {
      expect(output).not.toContain(forbidden);
    }
  });
});