import { http, HttpResponse } from "msw";
import { expect, test } from "vitest";
import { server } from "../test/msw";
import {
  createCatalogRelationship,
  deleteCatalogRelationship,
  getCatalogMetrics,
  rebuildGeneratedRelationships,
  setCatalogRelationshipStatus,
  type CatalogMetrics,
  type CatalogRelationship,
} from "./catalog-databases";

const databaseId = "d4baf0f5-b9c3-4dc5-aad2-2f5676a36e64";

const globalMetrics: CatalogMetrics = {
  scope: "global",
  databaseId: null,
  tables: 163,
  columns: 2_275,
  sensitiveColumns: 5,
  relationships: 21,
  descriptionTargets: 2_438,
  describedTargets: 1_829,
  descriptionCoverage: 75.02,
  updatedAt: "2026-08-31T08:45:00.000Z",
};

test("loads global catalog metrics without a database filter", async () => {
  let requestedUrl: URL | undefined;
  server.use(http.get("/api/catalog/metrics", ({ request }) => {
    requestedUrl = new URL(request.url);
    return HttpResponse.json(globalMetrics);
  }));

  await expect(getCatalogMetrics()).resolves.toEqual(globalMetrics);
  expect(requestedUrl?.pathname).toBe("/api/catalog/metrics");
  expect(requestedUrl?.searchParams.has("databaseId")).toBe(false);
});

test("loads metrics scoped to the requested database", async () => {
  const databaseMetrics: CatalogMetrics = {
    ...globalMetrics,
    scope: "database",
    databaseId,
    tables: 42,
    columns: 508,
    sensitiveColumns: 3,
    relationships: 8,
    descriptionTargets: 550,
    describedTargets: 413,
    descriptionCoverage: 75.09,
  };
  let requestedDatabaseId: string | null = null;
  server.use(http.get("/api/catalog/metrics", ({ request }) => {
    requestedDatabaseId = new URL(request.url).searchParams.get("databaseId");
    return HttpResponse.json(databaseMetrics);
  }));

  await expect(getCatalogMetrics(databaseId)).resolves.toEqual(databaseMetrics);
  expect(requestedDatabaseId).toBe(databaseId);
});

test("propagates an unsuccessful catalog metrics response", async () => {
  server.use(http.get("/api/catalog/metrics", () => new HttpResponse(null, { status: 503 })));

  await expect(getCatalogMetrics()).rejects.toMatchObject({ status: 503 });
});

const logicalRelationship: CatalogRelationship = {
  id: "11111111-1111-4111-8111-111111111111",
  databaseId,
  constraintName: null,
  sourceTableId: "22222222-2222-4222-8222-222222222222",
  sourceTableName: "orders",
  targetTableId: "33333333-3333-4333-8333-333333333333",
  targetTableName: "users",
  updateRule: null,
  deleteRule: null,
  deferrable: false,
  initiallyDeferred: false,
  columns: [{
    position: 1,
    sourceColumnId: "44444444-4444-4444-8444-444444444444",
    sourceColumnName: "user_id",
    targetColumnId: "55555555-5555-4555-8555-555555555555",
    targetColumnName: "id",
  }],
  origin: "manual",
  status: "active",
  lastSyncedDatabaseVersion: null,
  lastSyncedAt: null,
  createdAt: "2026-08-31T12:00:00.000Z",
  updatedAt: "2026-08-31T12:00:00.000Z",
};

test("creates a manual relationship from the selected source and target columns", async () => {
  let requestBody: unknown;
  server.use(http.post("/api/catalog/databases/:databaseId/relationships", async ({ request }) => {
    requestBody = await request.json();
    return HttpResponse.json(logicalRelationship, { status: 201 });
  }));

  await expect(createCatalogRelationship(
    databaseId,
    logicalRelationship.columns[0].sourceColumnId,
    logicalRelationship.columns[0].targetColumnId,
  )).resolves.toEqual(logicalRelationship);
  expect(requestBody).toEqual({
    sourceColumnId: logicalRelationship.columns[0].sourceColumnId,
    targetColumnId: logicalRelationship.columns[0].targetColumnId,
  });
});

test("rebuilds generated relationships for one database", async () => {
  let calls = 0;
  server.use(http.post(
    "/api/catalog/databases/:databaseId/relationships/rebuild-generated",
    () => {
      calls += 1;
      return HttpResponse.json({ added: 12, alreadyPresent: 7, excluded: 3, ambiguous: 2 });
    },
  ));

  await expect(rebuildGeneratedRelationships(databaseId)).resolves.toEqual({
    added: 12,
    alreadyPresent: 7,
    excluded: 3,
    ambiguous: 2,
  });
  expect(calls).toBe(1);
});

test("changes whether a logical relationship is active or excluded", async () => {
  let requestBody: unknown;
  server.use(http.patch(
    "/api/catalog/databases/:databaseId/relationships/:relationshipId",
    async ({ request }) => {
      requestBody = await request.json();
      return HttpResponse.json({ ...logicalRelationship, status: "excluded" });
    },
  ));

  await expect(setCatalogRelationshipStatus(
    databaseId,
    logicalRelationship.id,
    "excluded",
  )).resolves.toMatchObject({ status: "excluded" });
  expect(requestBody).toEqual({ status: "excluded" });
});

test("permanently deletes a logical relationship", async () => {
  let calls = 0;
  server.use(http.delete(
    "/api/catalog/databases/:databaseId/relationships/:relationshipId",
    () => {
      calls += 1;
      return new HttpResponse(null, { status: 204 });
    },
  ));

  await expect(deleteCatalogRelationship(databaseId, logicalRelationship.id)).resolves.toBeUndefined();
  expect(calls).toBe(1);
});