import type { Accessor } from "solid-js";
import http, { createHttpClient, type HttpClient } from "~/service/http";
import type { CourseType } from "~/types/Course";
import type { userInfoType } from "~/types/Userinfo";

export type CourseKind = "run" | "finish" | "sign";

export type RecordType = "" | "/work" | "/exam" | "/discuss";

export type StudyStatus = 1 | 2 | 3;

type ApiResponse<T> = {
  code: number;
  message: string;
  data: T;
};

export type LoginReq = {
  username: string;
  password: string;
  token: string;
  status: CourseKind;
  host: string;
};

export type LoginData = {
  courses?: CourseType[];
  session_id: string;
  user: userInfoType;
};

export type LoginRes = ApiResponse<LoginData>;

export type RecordItem = {
  id: string;
  name: string;
  type: string | null;
  chapterId: string;
  courseId: string;
  videoFile: string;
  videoDuration: string;
  votingPath: string | null;
  tabVideo: string;
  tabFile: string;
  tabVote: string;
  tabWork: string;
  tabExam: string;
  sort: string;
  videoMode: string;
  localFile: string;
  schoolId: string;
  lock: string;
  unlockTime: string;
  bid: string;
  duration: string;
  progress: string;
  state: string;
  viewCount: string;
  finalTime: string;
  error: number;
  errorMessage: string;
  beginTime: string;
  viewedDuration: string;
  url: string;
};

export type PageInfo = {
  keyName: string;
  page: number;
  pageCount: number;
  recordsCount: number;
  onlyCount: number;
  pageSize: number;
};

export type RecordData = {
  list: RecordItem[];
  page_info: PageInfo;
};

export type RecordRes = ApiResponse<RecordData>;

export type StudyData = {
  state: number;
  studyId: number;
  status: boolean;
  msg: string;
};

export type StudyRes = ApiResponse<StudyData>;

export type LogoutRes = {
  code: number;
  message: string;
};

export type HostItem = {
  host: string;
  name: string;
};

export type HostRes = ApiResponse<{
  list: HostItem[];
}>;

export type VersionData = {
  BuildAt: string;
  GitAuthor: string;
  GitCommit: string;
  GitEmail: string;
  Version: string;
};

export type VersionRes = ApiResponse<VersionData>;

export type RecordReq = {
  course_id: string;
  page: number;
  record_type?: RecordType;
};

export type CourseReq = {
  status: CourseKind;
};

export type CourseData = {
  courses: CourseType[];
};

export type CourseRes = ApiResponse<CourseData>;

export type StudyReq = {
  node_id: string;
  study_id: string;
  study_time: string;
  status: StudyStatus;
};

export type StudyRunnerItem = {
  nodeId: string;
  name: string;
  currentTime: number;
  totalTime: number;
  progress: string;
  completed: boolean;
};

export type StudyRunnerPayload = {
  accountId: string;
  courseId: number;
  intervalSeconds: number;
  items: StudyRunnerItem[];
  isRunningStudy: Accessor<boolean>;
  setIsRunningStudy: () => void;
  client: WkClient;
  onLog?: (message: string, accoundID: string) => void;
};

export type WkClient = {
  courseApi: (payload: CourseReq) => Promise<CourseRes>;
  recordApi: (payload: RecordReq) => Promise<RecordRes>;
  studyApi: (payload: StudyReq) => Promise<StudyRes>;
  logoutApi: () => Promise<LogoutRes>;
};

export const loginApi = async (payload: LoginReq) => {
  const res = await http.post<LoginRes>("/api/login", payload);
  return res;
};

const createWkClientFromHttp = (client: HttpClient): WkClient => ({
  courseApi(payload) {
    return client.post<CourseRes>("/api/v2/course", payload);
  },
  recordApi(payload) {
    return client.post<RecordRes>("/api/v2/record", payload);
  },
  studyApi(payload) {
    return client.post<StudyRes>("/api/v2/study", payload);
  },
  logoutApi() {
    return client.post<LogoutRes>("/api/v2/logout");
  },
});

export const createWkClient = (
  resolveSessionId: () => string | undefined,
): WkClient => {
  return createWkClientFromHttp(createHttpClient(resolveSessionId));
};

const sleep = (ms: number) => new Promise((res) => setTimeout(res, ms));

export const runStudyQueue = async (_payload: StudyRunnerPayload) => {
  const stopFlag = _payload.isRunningStudy;
  const stepSeconds = Math.max(1, Math.floor(_payload.intervalSeconds || 5));
  const sleepMs = stepSeconds * 1000;
  const maxRetryCount = 3;
  const maxStudySubmitRetry = 3;
  const studySubmitRetrySleepMs = 5000;

  for (const item of _payload.items) {
    const learnedTime = Math.max(0, Math.floor(item.currentTime || 0));
    const rawTotalTime = Math.max(0, Math.floor(item.totalTime || 0));
    const totalTime = Math.max(0, rawTotalTime - learnedTime);
    let currentTime = 0;
    let count = 0;
    let study_id = 0;
    let retryCount = 0;

    if (totalTime <= 0) {
      _payload.onLog?.(`跳过已完成节点: ${item.name}`, _payload.accountId);
      continue;
    }

    while (currentTime <= totalTime) {
      if (!stopFlag()) {
        _payload.onLog?.("⛔ 已手动停止", _payload.accountId);
        return;
      }
      const message = `[${item.name}]: ${currentTime}/${totalTime}`;
      _payload.onLog?.(message, _payload.accountId);

      try {
        const resp = await _payload.client.studyApi({
          node_id: item.nodeId,
          study_id: String(study_id),
          study_time: String(currentTime),
          status: count === 0 ? 1 : currentTime >= totalTime ? 3 : 2,
        });
        const submitMessage = String(resp.data.msg ?? "");
        const isSubmitFailed =
          submitMessage.includes("提交学时失败") || resp.data.status === false;

        if (isSubmitFailed) {
          let submitRetry = 0;
          let fixedResp = resp;

          while (submitRetry < maxStudySubmitRetry) {
            submitRetry += 1;
            _payload.onLog?.(
              `⚠️ 提交学时失败，${submitRetry}/${maxStudySubmitRetry} 次重试后再提交: ${item.name}`,
              _payload.accountId,
            );
            await sleep(studySubmitRetrySleepMs);

            if (!stopFlag()) {
              _payload.onLog?.("⛔ 已手动停止", _payload.accountId);
              return;
            }

            fixedResp = await _payload.client.studyApi({
              node_id: item.nodeId,
              study_id: String(study_id),
              study_time: String(currentTime),
              status: count === 0 ? 1 : currentTime >= totalTime ? 3 : 2,
            });

            const nextMsg = String(fixedResp.data.msg ?? "");
            const nextFailed =
              nextMsg.includes("提交学时失败") || fixedResp.data.status === false;
            if (!nextFailed) {
              break;
            }
          }

          const finalMsg = String(fixedResp.data.msg ?? "");
          const stillFailed =
            finalMsg.includes("提交学时失败") || fixedResp.data.status === false;
          if (stillFailed) {
            _payload.onLog?.(
              `⛔ 提交学时连续重试 ${maxStudySubmitRetry} 次仍失败，停止刷课: ${item.name}`,
              _payload.accountId,
            );
            _payload.setIsRunningStudy();
            return;
          }

          study_id = fixedResp.data.studyId;
          retryCount = 0;

          if (currentTime === totalTime) {
            break;
          }

          currentTime = Math.min(currentTime + stepSeconds, totalTime);
          count++;
          await sleep(sleepMs);
          continue;
        }

        if (resp.data.state != 0) {
          _payload.onLog?.(`⛔ 自动停止: ${resp.data.msg}`, _payload.accountId);
          _payload.setIsRunningStudy();
          return;
        }

        study_id = resp.data.studyId;
        retryCount = 0;

        if (currentTime === totalTime) {
          break;
        }

        currentTime = Math.min(currentTime + stepSeconds, totalTime);
        count++;
      } catch (error) {
        retryCount += 1;
        const errorMessage = `请求失败: ${error instanceof Error ? error.message : String(error)}`;
        _payload.onLog?.(errorMessage, _payload.accountId);

        if (retryCount >= maxRetryCount) {
          _payload.onLog?.(
            `⚠️ 连续失败 ${maxRetryCount} 次，跳过节点: ${item.name}`,
            _payload.accountId,
          );
          break;
        }
      }

      await sleep(sleepMs);
    }
  }
};

export const hostApi = async () => {
  return await http.get<HostRes>("/api/v1/host");
};

export const versionApi = async () => {
  return await http.get<VersionRes>("/api/version");
};