import { http, HttpResponse } from "msw";

import { createMockStudioGateway } from "../../../src/features/tech-log/adapters/mock/mock-studio-gateway.ts";
import { isStudioGatewayError } from "../../../src/features/tech-log/application/ports/studio-gateway-error.ts";

const BASE = "http://api.test";

function problemResponse(error: unknown) {
  if (isStudioGatewayError(error)) {
    return HttpResponse.json(error.problem, {
      status: error.status,
      headers: { "content-type": "application/problem+json" },
    });
  }
  throw error;
}

async function json(work: () => Promise<unknown>, status = 200) {
  try {
    return HttpResponse.json((await work()) as never, { status });
  } catch (error) {
    return problemResponse(error);
  }
}

/**
 * Forwards every query parameter a `projectRequest` puts on the wire, not
 * just the ones a first pass happened to reach for. A handler that silently
 * drops a documented filter lets a later filter test pass for the wrong
 * reason — it would observe the *unfiltered* mock result and never learn the
 * parameter never left the URL.
 */
function queryParams(
  url: URL,
  stringNames: readonly string[],
  numberNames: readonly string[] = [],
): Record<string, string | number> {
  const result: Record<string, string | number> = {};
  for (const name of stringNames) {
    const value = url.searchParams.get(name);
    if (value !== null) result[name] = value;
  }
  for (const name of numberNames) {
    const value = url.searchParams.get(name);
    if (value !== null) result[name] = Number(value);
  }
  return result;
}

export function createTechLogStudioHandlers(
  gateway = createMockStudioGateway(),
  baseUrl = BASE,
) {
  const key = (request: Request) =>
    request.headers.get("Idempotency-Key") ?? "missing-key";

  return {
    gateway,
    handlers: [
      http.get(`${baseUrl}/api/v1/studio/session`, () =>
        HttpResponse.json({
          authenticated: true,
          displayName: "테스트 편집자",
          roles: ["STUDIO_EDITOR"],
          csrfToken: "csrf-test-token",
          csrfHeaderName: "X-CSRF-TOKEN",
        }),
      ),
      http.get(`${baseUrl}/api/v1/studio/dashboard`, () =>
        json(() => gateway.getDashboard()),
      ),
      http.get(`${baseUrl}/api/v1/studio/documents`, ({ request }) => {
        const url = new URL(request.url);
        return json(() =>
          gateway.listDocuments(
            queryParams(
              url,
              ["q", "kind", "publicationStatus", "nextAction", "projectId", "sort", "cursor"],
              ["limit"],
            ) as never,
          ),
        );
      }),
      http.post(`${baseUrl}/api/v1/studio/documents`, async ({ request }) =>
        json(
          async () =>
            gateway.createDocument((await request.json()) as never, {
              idempotencyKey: key(request),
            }),
          201,
        ),
      ),
      http.get(`${baseUrl}/api/v1/studio/documents/:documentId`, ({ params }) =>
        json(() => gateway.getDocument(String(params.documentId))),
      ),
      http.put(
        `${baseUrl}/api/v1/studio/documents/:documentId`,
        async ({ request, params }) =>
          json(async () =>
            gateway.saveDocument(
              String(params.documentId),
              (await request.json()) as never,
              { idempotencyKey: key(request) },
            ),
          ),
      ),
      http.post(
        `${baseUrl}/api/v1/studio/documents/:documentId/validate`,
        async ({ request, params }) =>
          json(async () =>
            gateway.validateDocument(
              String(params.documentId),
              (await request.json()) as never,
              { idempotencyKey: key(request) },
            ),
          ),
      ),
      http.get(
        `${baseUrl}/api/v1/studio/documents/:documentId/preview`,
        ({ params }) => json(() => gateway.getCurrentPreview(String(params.documentId))),
      ),
      http.post(
        `${baseUrl}/api/v1/studio/documents/:documentId/preview`,
        async ({ request, params }) =>
          json(
            async () =>
              gateway.createPreview(
                String(params.documentId),
                (await request.json()) as never,
                { idempotencyKey: key(request) },
              ),
            201,
          ),
      ),
      http.post(
        `${baseUrl}/api/v1/studio/documents/:documentId/publish`,
        async ({ request, params }) =>
          json(async () =>
            gateway.publishDocument(
              String(params.documentId),
              (await request.json()) as never,
              { idempotencyKey: key(request) },
            ),
          ),
      ),
      http.get(`${baseUrl}/api/v1/studio/publications`, ({ request }) => {
        const url = new URL(request.url);
        return json(() =>
          gateway.listPublications(
            queryParams(url, ["q", "type", "cursor"], ["limit"]) as never,
          ),
        );
      }),
      http.post(
        `${baseUrl}/api/v1/studio/publications/:publicationId/unpublish`,
        async ({ request, params }) =>
          json(async () =>
            gateway.unpublishPublication(
              String(params.publicationId),
              (await request.json()) as never,
              { idempotencyKey: key(request) },
            ),
          ),
      ),
      http.get(
        `${baseUrl}/api/v1/studio/publications/:publicationEventId/preview`,
        ({ params }) =>
          json(() => gateway.getPublicationSnapshot(String(params.publicationEventId))),
      ),
      http.get(`${baseUrl}/api/v1/studio/catalog`, ({ request }) => {
        const url = new URL(request.url);
        return json(() =>
          gateway.getCatalog(
            queryParams(url, ["type", "q", "cursor"], ["limit"]) as never,
          ),
        );
      }),
    ],
  };
}