import { JSDOM } from "jsdom";
import { afterEach, beforeEach, describe, expect, test, vi } from "vitest";

import { createDetailContentController } from "../src/content/detail/index";
import { createRouteState } from "../src/content/route-state";
import {
  CANDIDATE_ANALYSIS_MESSAGE_TYPE,
  CANDIDATE_REQUEST_MESSAGE_TYPE,
  EXTENSION_MESSAGE_SOURCE,
  HOOK_READY_MESSAGE_TYPE,
  RESULT_MESSAGE_TYPE
} from "../src/shared/message-types";
import type { AfterSearchRateResult } from "../src/shared/result-types";

describe("content bridge", () => {
  let dom: JSDOM;

  beforeEach(() => {
    dom = new JSDOM("", {
      url: "https://xingtu.cn/ad/creator/author-homepage/douyin-video/6629661559960371207"
    });
  });

  afterEach(() => {
    dom.window.close();
  });

  test("initializes route state from the current url", () => {
    const state = createRouteState(dom.window.location.href);

    expect(state.getSnapshot()).toMatchObject({
      navigationSeq: 1,
      pageStarId: "6629661559960371207",
      pathname: "/ad/creator/author-homepage/douyin-video/6629661559960371207",
      routeKey:
        "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::1"
    });
  });

  test("increments the navigation sequence when the route changes", () => {
    const state = createRouteState(dom.window.location.href);
    const nextSnapshot = state.advance(
      "https://xingtu.cn/ad/creator/author-homepage/douyin-video/7777777777777777777"
    );

    expect(nextSnapshot).toMatchObject({
      navigationSeq: 2,
      pageStarId: "7777777777777777777",
      routeKey:
        "7777777777777777777::/ad/creator/author-homepage/douyin-video/7777777777777777777::2"
    });
  });

  test("ignores stale route messages", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    const stalePayload: AfterSearchRateResult = {
      capturedAt: Date.now(),
      pageStarId: "old-id",
      pageUrl: dom.window.location.href,
      rawPathHints: [],
      routeKey: "old-id::/old-path::1",
      stage: "captured",
      success: true,
      rates: {
        personalVideoAfterSearchRate: "0.5% - 1%",
        singleVideoAfterSearchRate: "1% - 2%"
      }
    };

    dom.window.dispatchEvent(
      new dom.window.MessageEvent("message", {
        data: {
          payload: stalePayload,
          source: EXTENSION_MESSAGE_SOURCE,
          type: RESULT_MESSAGE_TYPE
        },
        source: dom.window
      })
    );

    expect(resultLogs(logger)).toHaveLength(0);
    controller.dispose();
  });

  test("injects the built page-hook asset path", () => {
    const logger = createLogger();

    const firstController = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });
    const secondController = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    const injectedScripts = dom.window.document.querySelectorAll(
      "#star-chart-search-enhancer-page-hook"
    );

    expect(injectedScripts).toHaveLength(1);
    expect((injectedScripts[0] as HTMLScriptElement).src).toBe(
      "chrome-extension://test/page/hook.global.js"
    );
    firstController.dispose();
    secondController.dispose();
  });

  test("logs a hook-ready diagnostic when the page hook announces itself", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    dom.window.dispatchEvent(
      new dom.window.MessageEvent("message", {
        data: {
          payload: {
            pageStarId: "6629661559960371207",
            routeKey:
              "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::1"
          },
          source: EXTENSION_MESSAGE_SOURCE,
          type: HOOK_READY_MESSAGE_TYPE
        },
        source: dom.window
      })
    );

    expect(logger.info).toHaveBeenCalledWith(
      "[star-chart-search-enhancer]",
      "hook-ready",
      expect.objectContaining({
        pageStarId: "6629661559960371207"
      })
    );
    controller.dispose();
  });

  test("logs candidate-request diagnostics for the current route", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    dom.window.dispatchEvent(
      new dom.window.MessageEvent("message", {
        data: {
          payload: {
            requestMethod: "GET",
            requestUrl: "https://api.xingtu.cn/creator/value",
            routeKey:
              "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::1",
            status: 200
          },
          source: EXTENSION_MESSAGE_SOURCE,
          type: CANDIDATE_REQUEST_MESSAGE_TYPE
        },
        source: dom.window
      })
    );

    expect(logger.info).toHaveBeenCalledWith(
      "[star-chart-search-enhancer]",
      "candidate-request",
      expect.objectContaining({
        requestUrl: "https://api.xingtu.cn/creator/value"
      })
    );
    controller.dispose();
  });

  test("logs candidate-analysis diagnostics for the current route", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    dom.window.dispatchEvent(
      new dom.window.MessageEvent("message", {
        data: {
          payload: {
            extractorLevel: "none",
            matched: false,
            reason: "No after-search-rate signals found",
            requestUrl: "https://api.xingtu.cn/creator/value",
            routeKey:
              "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::2",
            signalEntries: [
              "$.data.avg_search_after_view_rate=0.0015",
              "$.data.avg_search_after_view_rate_rank_percent=0.9"
            ],
            success: false,
            topLevelKeys: ["data", "status_code"]
          },
          source: EXTENSION_MESSAGE_SOURCE,
          type: CANDIDATE_ANALYSIS_MESSAGE_TYPE
        },
        source: dom.window
      })
    );

    expect(logger.info).toHaveBeenCalledWith(
      "[star-chart-search-enhancer]",
      "candidate-analysis",
      expect.objectContaining({
        requestUrl: "https://api.xingtu.cn/creator/value",
        signalEntries: [
          "$.data.avg_search_after_view_rate=0.0015",
          "$.data.avg_search_after_view_rate_rank_percent=0.9"
        ],
        topLevelKeys: ["data", "status_code"]
      })
    );
    controller.dispose();
  });

  test("accepts result messages when only the navigation sequence differs", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    dom.window.dispatchEvent(
      new dom.window.MessageEvent("message", {
        data: {
          payload: {
            capturedAt: Date.now(),
            pageStarId: "6629661559960371207",
            pageUrl: dom.window.location.href,
            rawPathHints: [],
            reason: "Timed out waiting for after-search-rate capture",
            routeKey:
              "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::3",
            stage: "timeout",
            success: false
          },
          source: EXTENSION_MESSAGE_SOURCE,
          type: RESULT_MESSAGE_TYPE
        },
        source: dom.window
      })
    );

    expect(logger.info).toHaveBeenCalledWith(
      "[star-chart-search-enhancer]",
      "result",
      expect.objectContaining({
        routeKey:
          "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::3",
        stage: "timeout"
      })
    );
    controller.dispose();
  });

  test("does not log duplicate final results twice", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    const payload = currentRoutePayload(dom.window.location.href);

    dom.window.dispatchEvent(messageEvent(dom.window, payload));
    dom.window.dispatchEvent(messageEvent(dom.window, payload));

    expect(resultLogs(logger)).toHaveLength(1);
    controller.dispose();
  });

  test("allows a later success result to replace an earlier failure", () => {
    const logger = createLogger();
    const controller = createDetailContentController({
      chromeRuntime: { getURL: (value: string) => `chrome-extension://test/${value}` },
      document: dom.window.document,
      logger,
      window: dom.window
    });

    const timeoutPayload: AfterSearchRateResult = {
      capturedAt: Date.now(),
      pageStarId: "6629661559960371207",
      pageUrl: dom.window.location.href,
      rawPathHints: [],
      reason: "Timed out waiting for relevant responses",
      routeKey:
        "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::1",
      stage: "timeout",
      success: false
    };
    const successPayload = currentRoutePayload(dom.window.location.href);

    dom.window.dispatchEvent(messageEvent(dom.window, timeoutPayload));
    dom.window.dispatchEvent(messageEvent(dom.window, successPayload));

    const logs = resultLogs(logger);
    expect(logs).toHaveLength(2);
    expect(logs.at(-1)?.[2]).toMatchObject({
      stage: "captured",
      success: true
    });
    controller.dispose();
  });
});

function createLogger() {
  return {
    debug: vi.fn(),
    info: vi.fn(),
    warn: vi.fn()
  };
}

function currentRoutePayload(pageUrl: string): AfterSearchRateResult {
  return {
    capturedAt: Date.now(),
    pageStarId: "6629661559960371207",
    pageUrl,
    rawPathHints: ["$.cards[0].metrics[0]"],
    routeKey:
      "6629661559960371207::/ad/creator/author-homepage/douyin-video/6629661559960371207::1",
    stage: "captured",
    success: true,
    rates: {
      personalVideoAfterSearchRate: "0.5% - 1%",
      singleVideoAfterSearchRate: "1% - 2%"
    }
  };
}

function messageEvent(window: Window, payload: AfterSearchRateResult): MessageEvent {
  return new window.MessageEvent("message", {
    data: {
      payload,
      source: EXTENSION_MESSAGE_SOURCE,
      type: RESULT_MESSAGE_TYPE
    },
    source: window
  });
}

function resultLogs(logger: ReturnType<typeof createLogger>) {
  return logger.info.mock.calls.filter((call) => call[1] === "result");
}