import { APP_MODE } from "entities/App";
import type { TApplicationParams } from "./serviceWorkerUtils";
import {
  matchBuilderPath,
  matchViewerPath,
  getSearchQuery,
  getConsolidatedApiPrefetchRequest,
  getApplicationParamsFromUrl,
  getPrefetchRequests,
  PrefetchApiService,
} from "./serviceWorkerUtils";
import { Mutex } from "async-mutex";
import { Request as NFRequest, Response as NFResponse } from "node-fetch";

(global as any).fetch = jest.fn() as jest.Mock;
(global as any).caches = {
  open: jest.fn(),
  delete: jest.fn(),
};

describe("serviceWorkerUtils", () => {
  describe("matchBuilderPath", () => {
    it("should match the standard builder path", () => {
      const pathName = "/app/applicationSlug/pageSlug-123/edit";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("applicationSlug");
        expect(result.params).toHaveProperty("pageSlug");
        expect(result.params).toHaveProperty("pageId", "123");
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should match the standard builder path for alphanumeric pageId", () => {
      const pathName =
        "/app/applicationSlug/pageSlug-6616733a6e70274710f21a07/edit";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("applicationSlug");
        expect(result.params).toHaveProperty("pageSlug");
        expect(result.params).toHaveProperty(
          "pageId",
          "6616733a6e70274710f21a07",
        );
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should match the custom builder path", () => {
      const pathName = "/app/customSlug-custom-456/edit";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("customSlug");
        expect(result.params).toHaveProperty("pageId", "456");
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should match the deprecated builder path", () => {
      const pathName = "/applications/appId123/pages/456/edit";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("applicationId", "appId123");
        expect(result.params).toHaveProperty("pageId", "456");
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should not match incorrect builder path", () => {
      const pathName = "/app/applicationSlug/nonMatching-123";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      expect(result).toBeFalsy();
    });

    it("should not match when no pageId is present", () => {
      const pathName = "/app/applicationSlug/pageSlug-edit";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      expect(result).toBeFalsy();
    });

    it("should match when the path is edit widgets", () => {
      const pathName =
        "/app/applicationSlug/pageSlug-123/edit/widgets/t36hb2zukr";
      const options = { end: false };
      const result = matchBuilderPath(pathName, options);

      if (result) {
        expect(result.params).toHaveProperty("applicationSlug");
        expect(result.params).toHaveProperty("pageSlug");
        expect(result.params).toHaveProperty("pageId", "123");
      } else {
        fail("Expected result to be truthy");
      }
    });
  });

  describe("matchViewerPath", () => {
    it("should match the standard viewer path", () => {
      const pathName = "/app/applicationSlug/pageSlug-123";
      const result = matchViewerPath(pathName);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("applicationSlug");
        expect(result.params).toHaveProperty("pageSlug");
        expect(result.params).toHaveProperty("pageId", "123");
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should match the custom viewer path", () => {
      const pathName = "/app/customSlug-custom-456";
      const result = matchViewerPath(pathName);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("customSlug");
        expect(result.params).toHaveProperty("pageId", "456");
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should match the deprecated viewer path", () => {
      const pathName = "/applications/appId123/pages/456";
      const result = matchViewerPath(pathName);

      expect(result).toBeTruthy();
      if (result) {
        expect(result.params).toHaveProperty("applicationId", "appId123");
        expect(result.params).toHaveProperty("pageId", "456");
      } else {
        fail("Expected result to be truthy");
      }
    });

    it("should not match when no pageId is present", () => {
      const pathName = "/app/applicationSlug/pageSlug";
      const result = matchViewerPath(pathName);

      expect(result).toBeFalsy();
    });
  });

  describe("getSearchQuery", () => {
    it("should return the search query from the URL", () => {
      const search = "?key=value";
      const key = "key";
      const result = getSearchQuery(search, key);
      expect(result).toEqual("value");
    });

    it("should return an empty string if the key is not present in the URL", () => {
      const search = "?key=value";
      const key = "invalid";
      const result = getSearchQuery(search, key);
      expect(result).toEqual("");
    });

    it("should return an empty string if the search query is empty", () => {
      const search = "";
      const key = "key";
      const result = getSearchQuery(search, key);
      expect(result).toEqual("");
    });
  });

  describe("getApplicationParamsFromUrl", () => {
    it("should parse URL and return correct params for builder path", () => {
      const url = new URL(
        "https://app.appsmith.com/app/my-app/page-123/edit?branch=main",
      );
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "123",
        applicationId: undefined,
        branchName: "main",
        appMode: APP_MODE.EDIT,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });

    it("should parse URL and return correct params for viewer path", () => {
      const url = new URL(
        "https://app.appsmith.com/app/my-app/page-123?branch=main",
      );
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "123",
        applicationId: undefined,
        branchName: "main",
        appMode: APP_MODE.PUBLISHED,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });

    it("should return null if the path does not match any pattern", () => {
      const url = new URL("https://app.appsmith.com/invalid/path?branch=main");
      expect(getApplicationParamsFromUrl(url)).toBeNull();
    });

    it("should parse deprecated builder path and return correct params", () => {
      const url = new URL(
        "https://app.appsmith.com/applications/app-123/pages/page-123/edit?branch=main",
      );
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page-123",
        applicationId: "app-123",
        branchName: "main",
        appMode: APP_MODE.EDIT,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });

    it("should parse deprecated viewer path and return correct params", () => {
      const url = new URL(
        "https://app.appsmith.com/applications/app-123/pages/page-123?branch=main",
      );
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page-123",
        applicationId: "app-123",
        branchName: "main",
        appMode: APP_MODE.PUBLISHED,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });

    it("should parse custom builder path and return correct params", () => {
      const url = new URL(
        "https://app.appsmith.com/app/custom-app-123/edit?branch=main",
      );
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "123",
        applicationId: undefined,
        branchName: "main",
        appMode: APP_MODE.EDIT,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });

    it("should parse custom viewer path and return correct params", () => {
      const url = new URL(
        "https://app.appsmith.com/app/custom-app-123?branch=main",
      );
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "123",
        applicationId: undefined,
        branchName: "main",
        appMode: APP_MODE.PUBLISHED,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });

    it("should parse URL and return params with empty branch name if branch query param is not present", () => {
      const url = new URL("https://app.appsmith.com/app/my-app/page-123/edit");
      const expectedParams: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "123",
        applicationId: undefined,
        branchName: "",
        appMode: APP_MODE.EDIT,
      };

      expect(getApplicationParamsFromUrl(url)).toEqual(expectedParams);
    });
  });

  describe("getConsolidatedApiPrefetchRequest", () => {
    beforeAll(() => {
      (global as any).Request = NFRequest;
    });

    it("should return null if pageId is not provided", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        branchName: "main",
        appMode: APP_MODE.EDIT,
      };

      expect(getConsolidatedApiPrefetchRequest(params)).toBeNull();
    });

    it("should create request for EDIT mode with applicationId", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page123",
        applicationId: "app123",
        branchName: "main",
        appMode: APP_MODE.EDIT,
      };

      const request = getConsolidatedApiPrefetchRequest(params);
      expect(request).toBeInstanceOf(Request);
      expect(request?.url).toBe(
        `https://app.appsmith.com/api/v1/consolidated-api/edit?defaultPageId=page123&applicationId=app123`,
      );
      expect(request?.method).toBe("GET");
      expect(request?.headers.get("Branchname")).toBe("main");
    });

    it("should create request for PUBLISHED mode with applicationId", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page123",
        applicationId: "app123",
        branchName: "main",
        appMode: APP_MODE.PUBLISHED,
      };

      const request = getConsolidatedApiPrefetchRequest(params);
      expect(request).toBeInstanceOf(Request);
      expect(request?.url).toBe(
        `https://app.appsmith.com/api/v1/consolidated-api/view?defaultPageId=page123&applicationId=app123`,
      );
      expect(request?.method).toBe("GET");
      expect(request?.headers.get("Branchname")).toBe("main");
    });

    it("should create request for EDIT mode without applicationId", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page123",
        branchName: "main",
        appMode: APP_MODE.EDIT,
      };

      const request = getConsolidatedApiPrefetchRequest(params);
      expect(request).toBeInstanceOf(Request);
      expect(request?.url).toBe(
        `https://app.appsmith.com/api/v1/consolidated-api/edit?defaultPageId=page123`,
      );
      expect(request?.method).toBe("GET");
      expect(request?.headers.get("Branchname")).toBe("main");
    });

    it("should create request for PUBLISHED mode without applicationId", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page123",
        branchName: "main",
        appMode: APP_MODE.PUBLISHED,
      };

      const request = getConsolidatedApiPrefetchRequest(params);
      expect(request).toBeInstanceOf(Request);
      expect(request?.url).toBe(
        `https://app.appsmith.com/api/v1/consolidated-api/view?defaultPageId=page123`,
      );
      expect(request?.method).toBe("GET");
      expect(request?.headers.get("Branchname")).toBe("main");
    });

    it("should return null for an unknown app mode", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        pageId: "page123",
        branchName: "main",
        appMode: "UNKNOWN" as APP_MODE,
      };

      expect(getConsolidatedApiPrefetchRequest(params)).toBeNull();
    });
  });

  describe("getPrefetchRequests", () => {
    it("should return prefetch requests with consolidated api request", () => {
      const params: TApplicationParams = {
        origin: "https://app.appsmith.com",
        branchName: "main",
        appMode: APP_MODE.EDIT,
        pageId: "page123",
      };
      const requests = getPrefetchRequests(params);
      expect(requests).toHaveLength(1);
      const [consolidatedAPIRequest] = requests;
      expect(consolidatedAPIRequest).toBeInstanceOf(Request);
      expect(consolidatedAPIRequest?.url).toBe(
        `https://app.appsmith.com/api/v1/consolidated-api/edit?defaultPageId=page123`,
      );
      expect(consolidatedAPIRequest?.method).toBe("GET");
      expect(consolidatedAPIRequest?.headers.get("Branchname")).toBe("main");
    });
  });

  describe("PrefetchApiService", () => {
    let prefetchApiService: PrefetchApiService;
    let mockCache: any;

    beforeEach(() => {
      prefetchApiService = new PrefetchApiService();
      mockCache = {
        put: jest.fn(),
        match: jest.fn(),
        delete: jest.fn(),
      };
      (global as any).caches.open.mockResolvedValue(mockCache);
      (global as any).Request = NFRequest;
      (global as any).Response = NFResponse;
    });

    afterEach(() => {
      jest.clearAllMocks();
    });

    describe("getRequestKey", () => {
      it("should return the correct request key", () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        request.headers.append("branchname", "main");
        const key = prefetchApiService.getRequestKey(request);
        expect(key).toBe("GET:https://app.appsmith.com/:branchname:main");
      });
    });

    describe("aqcuireFetchMutex", () => {
      it("should acquire a new mutex if not present", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        const acquireSpy = jest.spyOn(Mutex.prototype, "acquire");
        await prefetchApiService.aqcuireFetchMutex(request);
        expect(acquireSpy).toHaveBeenCalled();
      });

      it("should reuse existing mutex if present", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        const mutex = new Mutex();
        prefetchApiService.prefetchFetchMutexMap.set(
          prefetchApiService.getRequestKey(request),
          mutex,
        );
        const acquireSpy = jest.spyOn(mutex, "acquire");
        await prefetchApiService.aqcuireFetchMutex(request);
        expect(acquireSpy).toHaveBeenCalled();
      });
    });

    describe("waitForUnlock", () => {
      it("should wait for the mutex to unlock if it exists", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        const mutex = new Mutex();
        prefetchApiService.prefetchFetchMutexMap.set(
          prefetchApiService.getRequestKey(request),
          mutex,
        );
        const waitForUnlockSpy = jest.spyOn(mutex, "waitForUnlock");
        await prefetchApiService.waitForUnlock(request);
        expect(waitForUnlockSpy).toHaveBeenCalled();
      });

      it("should do nothing if the mutex does not exist", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        await expect(
          prefetchApiService.waitForUnlock(request),
        ).resolves.not.toThrow();
      });
    });

    describe("releaseFetchMutex", () => {
      it("should release the mutex if it exists", () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        const mutex = new Mutex();
        prefetchApiService.prefetchFetchMutexMap.set(
          prefetchApiService.getRequestKey(request),
          mutex,
        );
        const releaseSpy = jest.spyOn(mutex, "release");
        prefetchApiService.releaseFetchMutex(request);
        expect(releaseSpy).toHaveBeenCalled();
      });

      it("should do nothing if the mutex does not exist", () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        expect(() =>
          prefetchApiService.releaseFetchMutex(request),
        ).not.toThrow();
      });
    });

    describe("cacheApi", () => {
      it("should acquire the mutex, fetch the request, cache the response, and release the mutex", async () => {
        const request = new Request("https://app.appsmith.com/sdfsdf", {
          method: "GET",
        });
        const response = new Response("Test response", {
          status: 200,
          statusText: "OK",
        });

        (global as any).fetch.mockResolvedValue(response);

        const acquireSpy = jest.spyOn(Mutex.prototype, "acquire");
        const releaseSpy = jest.spyOn(Mutex.prototype, "release");

        await prefetchApiService.cacheApi(request);

        expect(acquireSpy).toHaveBeenCalled();
        expect((global as any).fetch).toHaveBeenCalledWith(request);
        expect(mockCache.put).toHaveBeenCalledWith(
          request,
          expect.objectContaining({
            status: 200,
            statusText: "OK",
          }),
        );
        expect(releaseSpy).toHaveBeenCalled();
      });

      it("should delete the cache and release the mutex if fetch fails", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        (global as any).fetch.mockRejectedValue(new Error("Fetch error"));

        const acquireSpy = jest.spyOn(Mutex.prototype, "acquire");
        const releaseSpy = jest.spyOn(Mutex.prototype, "release");

        await prefetchApiService.cacheApi(request);

        expect(acquireSpy).toHaveBeenCalled();
        expect(mockCache.delete).toHaveBeenCalledWith(request);
        expect(releaseSpy).toHaveBeenCalled();
      });
    });

    describe("getCachedResponse", () => {
      it("should wait for the mutex to unlock, get the cached response if valid, and delete it afterwards", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        const response = new Response("test response", {
          headers: { date: new Date(Date.now() - 1000).toUTCString() },
        });
        mockCache.match.mockResolvedValue(response);
        const mutex = new Mutex();
        prefetchApiService.prefetchFetchMutexMap.set(
          prefetchApiService.getRequestKey(request),
          mutex,
        );
        const waitForUnlockSpy = jest.spyOn(Mutex.prototype, "waitForUnlock");

        const cachedResponse =
          await prefetchApiService.getCachedResponse(request);

        expect(waitForUnlockSpy).toHaveBeenCalled();
        expect(mockCache.match).toHaveBeenCalledWith(request);
        expect(mockCache.delete).toHaveBeenCalledWith(request);
        expect(cachedResponse).toBe(response);
      });

      it("should return null if the cache is invalid", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        const response = new Response("test response", {
          headers: { date: new Date(Date.now() - 3 * 60 * 1000).toUTCString() },
        });
        mockCache.match.mockResolvedValue(response);

        const cachedResponse =
          await prefetchApiService.getCachedResponse(request);

        expect(mockCache.match).toHaveBeenCalledWith(request);
        expect(mockCache.delete).toHaveBeenCalledWith(request);
        expect(cachedResponse).toBeNull();
      });

      it("should return null if there is no cached response", async () => {
        const request = new Request("https://app.appsmith.com", {
          method: "GET",
        });
        mockCache.match.mockResolvedValue(null);

        const cachedResponse =
          await prefetchApiService.getCachedResponse(request);

        expect(mockCache.match).toHaveBeenCalledWith(request);
        expect(cachedResponse).toBeNull();
      });
    });
  });
});