import Fastify from "fastify";
import { expect, test, vi } from "vitest";
import type { PrincipalContext } from "../src/auth/principal.js";
import type { CatalogRepository, WorkspaceDatabase } from "../src/catalog/types.js";
import {
  readWorkspacePreprocessingStatus,
  workspacePreprocessingRoutes,
  type WorkspacePreprocessingRouteDeps,
} from "../src/routes/workspace-preprocessing.js";
import type { WorkspaceRegistry } from "../src/workspaces/registry.js";

const admin: PrincipalContext = {
  issuer: "test",
  subject: "admin",
  roles: ["admin"],
  permissions: ["session.use", "database.manage"],
  isAdmin: true,
};

function database(overrides: Partial<WorkspaceDatabase> = {}): WorkspaceDatabase {
  return {
    id: "49b6491a-78bb-4cee-b27b-0efaf4419774",
    workspaceId: "catalog-workspace",
    engine: "postgres",
    databaseName: "warehouse",
    schema: "analytics",
    version: 4,
    createdAt: "2026-09-05T10:00:00.000Z",
    updatedAt: "2026-09-05T10:00:00.000Z",
    binding: { transport: "postgres_direct", host: "db", port: 5432, username: "reader" },
    connectionStatus: "reachable",
    schemaSyncedVersion: 4,
    metadataContentRevision: 18,
    preprocessingStatus: "failed",
    ...overrides,
  };
}

function routeDeps(
  current: () => WorkspaceDatabase | undefined,
  overrides: Partial<WorkspacePreprocessingRouteDeps> = {},
): WorkspacePreprocessingRouteDeps {
  const repository = {
    getByWorkspace: vi.fn(async () => current()),
    listSyncRuns: vi.fn(async () => []),
    getActiveDescriptionGenerationRun: vi.fn(async () => undefined),
    listSensitivityAnalysisRuns: vi.fn(async () => []),
  } as unknown as CatalogRepository;
  const registry = {
    read: vi.fn(async () => ({
      workspace: {
        workspace: {
          schema_version: 4,
          id: "catalog-workspace",
          name: "Catalog workspace",
          language: "en",
        },
      },
      revision: {
        id: "catalog-workspace",
        commit: "a".repeat(40),
        blob: "b".repeat(40),
        snapshotPath: "/data/workspaces/catalog-workspace.yaml",
      },
    })),
  } as unknown as WorkspaceRegistry;
  return {
    repository,
    registry,
    service: {
      run: vi.fn(async () => ({ status: "succeeded" })),
      clear: vi.fn(async () => ({ status: "succeeded" })),
    } as never,
    inputFingerprint: {
      workspaceInputFingerprint: vi.fn(async () => "sha256:current"),
    } as never,
    ...overrides,
  };
}

test("reports ready only when the Catalog revision and runtime fingerprint are current", async () => {
  const ready = database({
    preprocessingStatus: "succeeded",
    preprocessedMetadataRevision: 18,
    preprocessingInputFingerprint: "sha256:current",
    preprocessingFinishedAt: "2026-09-05T10:04:00.000Z",
  });
  await expect(readWorkspacePreprocessingStatus(
    "catalog-workspace",
    routeDeps(() => ready),
  )).resolves.toMatchObject({
    state: "ready",
    actionable: true,
    clearable: true,
    detail: "Catalog revision 18 is indexed.",
  });

  ready.preprocessingInputFingerprint = "sha256:old";
  await expect(readWorkspacePreprocessingStatus(
    "catalog-workspace",
    routeDeps(() => ready),
  )).resolves.toMatchObject({
    state: "required",
    actionable: true,
    clearable: true,
    detail: "Catalog revision 18 is not indexed.",
  });
});

test("explains a current blocked prerequisite without inventing a run log", async () => {
  const status = await readWorkspacePreprocessingStatus(
    "catalog-workspace",
    routeDeps(() => database({ schemaSyncedVersion: 3 })),
  );
  expect(status).toMatchObject({
    state: "blocked",
    actionable: false,
    clearable: true,
    detail: "Catalog synchronization is required.",
    reason: "Database configuration v4 is newer than the latest Catalog synchronization v3.",
    nextStep: "Open Database management and run Synchronize schema.",
  });
  expect(status).not.toHaveProperty("lastFailure");
});

test("exposes only the latest sanitized failed-run diagnostic", async () => {
  const status = await readWorkspacePreprocessingStatus(
    "catalog-workspace",
    routeDeps(() => database({
      preprocessingStatus: "failed",
      preprocessingErrorCode: "schema_index_failed",
      preprocessingFinishedAt: "2026-09-05T10:04:00.000Z",
    })),
  );
  expect(status).toMatchObject({
    state: "failed",
    actionable: true,
    clearable: true,
    reason: expect.stringContaining("schema indexing worker"),
    lastFailure: {
      stage: "schema_index",
      errorCode: "schema_index_failed",
      finishedAt: "2026-09-05T10:04:00.000Z",
    },
  });
  expect(status).not.toHaveProperty("history");
});

test("reports the durable phase of the active preprocessing run", async () => {
  const status = await readWorkspacePreprocessingStatus(
    "catalog-workspace",
    routeDeps(
      () => database({ preprocessingStatus: "running" }),
      {
        readLatestJob: () => ({
          status: "active",
          completedStages: ["catalog_snapshot"],
        }) as never,
      },
    ),
  );

  expect(status).toMatchObject({
    state: "running",
    detail: "Building schema vectors and LSH indexes.",
    progress: { stage: "schema_index", step: 2, totalSteps: 4 },
  });
});

test("explicitly reruns preprocessing when the current Catalog input is already ready", async () => {
  const ready = database({
    preprocessingStatus: "succeeded",
    preprocessedMetadataRevision: 18,
    preprocessingInputFingerprint: "sha256:current",
  });
  const deps = routeDeps(() => ready);
  const app = Fastify();
  app.addHook("preHandler", async (request) => { request.principal = admin; });
  workspacePreprocessingRoutes(app, deps);

  const response = await app.inject({
    method: "POST",
    url: "/workspaces/catalog-workspace/preprocessing",
  });

  expect(response.statusCode).toBe(200);
  expect(response.json()).toMatchObject({ state: "ready", actionable: true });
  expect(deps.service.run).toHaveBeenCalledTimes(1);
  await app.close();
});

test("runs preprocessing once from the sanctioned admin endpoint and returns the new state", async () => {
  let current = database();
  const deps = routeDeps(() => current, {
    service: {
      run: vi.fn(async () => {
        current = database({
          preprocessingStatus: "succeeded",
          preprocessedMetadataRevision: 18,
          preprocessingInputFingerprint: "sha256:current",
          preprocessingFinishedAt: "2026-09-05T10:04:00.000Z",
        });
        return { status: "succeeded" } as never;
      }),
      clear: vi.fn(async () => ({ status: "succeeded" } as never)),
    },
  });
  const app = Fastify();
  app.addHook("preHandler", async (request) => { request.principal = admin; });
  workspacePreprocessingRoutes(app, deps);

  const response = await app.inject({
    method: "POST",
    url: "/workspaces/catalog-workspace/preprocessing",
  });

  expect(response.statusCode).toBe(200);
  expect(response.json()).toMatchObject({ state: "ready", actionable: true });
  expect(deps.service.run).toHaveBeenCalledTimes(1);
  await app.close();
});

test("clears only derived preprocessing data from the sanctioned admin endpoint", async () => {
  let current = database({
    preprocessingStatus: "succeeded",
    preprocessedMetadataRevision: 18,
    preprocessingInputFingerprint: "sha256:current",
  });
  const deps = routeDeps(() => current, {
    service: {
      run: vi.fn(),
      clear: vi.fn(async () => {
        current = database({
          preprocessingStatus: "failed",
          preprocessingErrorCode: "derived_data_cleared",
          preprocessingFinishedAt: "2026-09-05T10:05:00.000Z",
        });
        return { status: "succeeded" } as never;
      }),
    },
  });
  const app = Fastify();
  app.addHook("preHandler", async (request) => { request.principal = admin; });
  workspacePreprocessingRoutes(app, deps);

  const response = await app.inject({
    method: "DELETE",
    url: "/workspaces/catalog-workspace/preprocessing",
  });

  expect(response.statusCode).toBe(200);
  expect(response.json()).toMatchObject({
    state: "required",
    clearable: false,
    detail: "Reference vectors and LSH are empty. Memory is preserved.",
  });
  expect(deps.service.clear).toHaveBeenCalledTimes(1);
  await app.close();
});