import { message } from 'antd';
import { addTask, getTaskDetail } from '@/servers/api/supplierEvaluate';
import type {
  TaskDetailData,
  TaskAddRequest,
  TaskDetailResponse
} from '@/servers/dao/supplierEvaluateTask';
import type { TaskNotifyLowerUnits } from '@/dicts/supplierTaskDict';
import type { PersonnelItem, IndicatorItem, SupplierItem } from '@/servers/dao/supplierEvaluateTask';

// Define the types for dva effects and reducers
type Effect = (action: { payload: any }, effects: { call: any; put: any; select: any }) => Generator<any, void, unknown>;
type Reducer<S> = (state: S, action: { payload: any }) => S;

/**
 * 供应商任务管理模型状态接口
 * 定义了整个模型的状态结构
 */
export interface SupplierTaskModelState {
  currentStep: number;        // 当前步骤索引，从0开始
  loading: boolean;           // 提交加载状态
  detailLoading: boolean;     // 详情数据加载状态
  taskFormData: Partial<TaskAddRequest>;  // 任务表单数据
  taskDetail: TaskDetailData | null;      // 任务详情数据
  mode: 'add' | 'edit' | 'division';  // 模式
}

/**
 * 供应商任务管理模型类型接口
 * 定义了模型的命名空间、状态、副作用和reducers
 */
export interface SupplierTaskModelType {
  namespace: 'supplierTaskManage';  // 模型命名空间
  state: SupplierTaskModelState;    // 模型状态
  effects: {
    fetchTaskDetail: Effect;        // 获取任务详情
    submitTaskData: Effect;         // 提交任务数据
    updateFormData: Effect;         // 更新表单数据
    nextStep: Effect;               // 下一步
    prevStep: Effect;               // 上一步
    resetState: Effect;             // 重置状态
    setCurrentStep: Effect;         // 设置当前步骤
    setMode: Effect;                // 设置模式
    deleteUser: Effect;             // 删除用户
  };
  reducers: {
    saveCurrentStep: Reducer<SupplierTaskModelState>;    // 保存当前步骤
    saveLoading: Reducer<SupplierTaskModelState>;        // 保存加载状态
    saveDetailLoading: Reducer<SupplierTaskModelState>;  // 保存详情加载状态
    saveTaskFormData: Reducer<SupplierTaskModelState>;   // 保存任务表单数据
    saveTaskDetail: Reducer<SupplierTaskModelState>;     // 保存任务详情数据
    saveMode: Reducer<SupplierTaskModelState>;           // 保存模式
  };
}

/**
 * 供应商任务管理模型
 * 用于管理供应商评价任务的添加、编辑流程和数据
 */
const SupplierTaskModel: SupplierTaskModelType = {
  namespace: 'supplierTaskManage',

  // 初始状态
  state: {
    currentStep: 0,        // 当前步骤，默认为第一步
    loading: false,        // 提交加载状态
    detailLoading: false,  // 详情数据加载状态
    taskFormData: {},      // 任务表单数据
    taskDetail: null,      // 任务详情数据
    mode: 'add',          // 模式
  },

  // 副作用处理函数
  effects: {
    /**
     * 获取任务详情
     * @param payload.taskId 任务ID
     */
    *fetchTaskDetail({ payload }: { payload: { taskId: string } }, { call, put }: { call: any; put: any }) {
      const { taskId } = payload;
      yield put({ type: 'saveDetailLoading', payload: true });

      try {
        // 调用API获取任务详情
        const response = (yield call(getTaskDetail, taskId)) as TaskDetailResponse;

        if (response.success) {
          const detail: TaskDetailData = response.data;

          // 转换任务详情数据为表单数据结构
          const taskFormData: Partial<TaskAddRequest> = {
            id: detail.id || '',
            evaluateTheme: detail.evaluateTheme || '',
            startTime: detail.startTime || '',
            endTime: detail.endTime || '',
            templateId: detail.templateId || '',
            categoryLimitation: detail.categoryLimitation || '0',
            evaluateYear: detail.evaluateYear || '',
            categoryId: detail.categoryId || undefined,


            // 供应商数据转换，添加id和name字段用于UI展示
            selectedSuppliers: detail.blackSupplierVos.map((item) => ({
              ...item,
              id: item.supplierId,
              name: item.supplierName,
              evaluators: item.userList,
            })),

            // 指标列表
            indicatorList: detail.indicatorList || [],

            // 供应商IDs与用户IDs
            supplierIds: detail.supplierIds || [],

            // 部门权重
            taskDeptWeightList: detail.taskDeptWeightList || [],
            //设置评价分工table回显 需处理
            userList: detail.userList.map((user) => {
              const matchedIndicator = detail.indicatorList?.find(
                (indicator) => indicator.userId === user.userId
              );
              return {
                ...user,
                name: user.userName,
                id: user.userId,
                indicatorIds: matchedIndicator?.indicatorIds || [],
              };
            }),


          };

          // 保存数据到状态
          yield put({ type: 'saveTaskFormData', payload: taskFormData });
          yield put({ type: 'saveTaskDetail', payload: detail });
        } else {
          message.error(response.message || '获取任务详情失败');
        }
      } catch (error) {
        console.error('获取任务详情失败:', error);
        message.error('获取任务详情失败');
      } finally {
        yield put({ type: 'saveDetailLoading', payload: false });
      }
    },

    /**
     * 提交任务数据
     * @param payload.taskStatus 任务状态
     * @param payload.isEditMode 是否为编辑模式
     * @param payload.taskId 任务ID（编辑模式必须）
     * @param payload.onSuccess 成功回调函数
     */
    *submitTaskData(
      { payload }: { payload: { taskStatus: TaskNotifyLowerUnits | null; isEditMode: boolean; taskId: string; onSuccess?: () => void } },
      { call, put, select }: { call: any; put: any; select: any }
    ) {
      const { taskStatus, isEditMode, taskId, onSuccess } = payload;
      yield put({ type: 'saveLoading', payload: true });

      try {
        // 获取表单数据
        const { taskFormData } = (yield select((state: any) => state.supplierTaskManage)) as { taskFormData: TaskAddRequest };

        // 构建提交数据
        let submitData: TaskAddRequest = {
          evaluateTheme: taskFormData.evaluateTheme || '',
          startTime: taskFormData.startTime || '',
          endTime: taskFormData.endTime || '',
          templateId: taskFormData.templateId || '',
          categoryLimitation: taskFormData.categoryLimitation || '0',
          evaluateYear: taskFormData.evaluateYear || '',
          categoryId: taskFormData.categoryId || '',
          taskStatus: taskStatus || null,

          // 供应商IDs与评价人员IDs
          supplierIds:
            taskFormData.selectedSuppliers?.map((supplier: any) => {
              // 从供应商的evaluators中提取用户ID
              const userIds = supplier.evaluators?.map((evaluator: any) => evaluator.id) || [];
              return {
                id: supplier.id,
                userIds,
              };
            }) || [],

          // 指标列表
          indicatorList:
            taskFormData.indicatorList?.map((item: any) => ({
              userId: item.userId,
              // 评价类型：如果用户关联了指标则为1(按指标)，否则为0(按评价单)
              type: item.indicatorIds && item.indicatorIds.length > 0 ? 1 : 0,
              indicatorIds: item.indicatorIds || [],
            })) || [],

          // 部门权重列表，过滤掉权重为0的
          taskDeptWeightList:
            taskFormData.taskDeptWeightList?.filter((item: any) => {
              return item.weightValue && item.weightValue !== '0';
            }) || [],
        };


        if (isEditMode) {
          // 编辑模式，添加ID字段
          submitData = {
            ...submitData,
            id: taskId,
          };
        }
        const response = (yield call(addTask, submitData)) as API.Response;
        if (response.success) {
          message.success(isEditMode ? '任务更新成功' : '任务创建成功');
          if (onSuccess) {
            onSuccess();
          }
        } else {
          message.error(response.message || '提交失败');
        }
      } catch (error) {
        console.error('提交失败:', error);
        message.error('提交失败');
      } finally {
        yield put({ type: 'saveLoading', payload: false });
      }
    },

    /**
     * 更新表单数据
     * 处理不同步骤表单数据的变化，保持数据一致性
     * @param payload 表单数据
     */
    *updateFormData({ payload }: { payload: any }, { put, select }: { put: any; select: any }) {
      // 获取当前表单数据
      const { taskFormData } = (yield select((state: any) => state.supplierTaskManage)) as { taskFormData: TaskAddRequest };
      // 合并新的表单数据
      const updatedFormData = { ...taskFormData, ...payload };
      // 处理供应商选择更新
      if (payload.selectedSuppliers) {
        // 确保每个供应商都有evaluators字段
        const suppliersWithEvaluators = payload.selectedSuppliers.map((supplier: any) => ({
          ...supplier,
          evaluators: supplier.evaluators || [], // 确保evaluators字段存在
        }));
        updatedFormData.selectedSuppliers = suppliersWithEvaluators;
      }
      // 处理评价人员更新 - 更新后要保留原有对象中的indicatorIds
      if (payload.userList) {
        const existingUserMap = new Map(
          (taskFormData.userList || []).map((user: PersonnelItem) => [user.id || user.userId, user])
        );

        updatedFormData.userList = payload.userList.map((newUser: PersonnelItem) => {
          const userId = newUser.id || newUser.userId;
          const existing = existingUserMap.get(userId);

          const indicatorIds =
            newUser.indicatorIds && newUser.indicatorIds.length > 0
              ? newUser.indicatorIds
              : existing?.indicatorIds || [];

          return {
            ...newUser,
            indicatorIds,
          };
        });
      }


      // 处理部门权重
      if (payload.taskDeptWeightList) {
        updatedFormData.taskDeptWeightList = payload.taskDeptWeightList;
      }
      console.log(updatedFormData)

      // 保存更新后的表单数据
      yield put({ type: 'saveTaskFormData', payload: updatedFormData });
    },
    /**
     * 删除用户
     * @param payload.userId 用户ID
     */
    *deleteUser({ payload }: { payload: { userIds: string[] } }, { put, select }: { put: any; select: any }) {
      const { userIds } = payload;
      if (!userIds || userIds.length === 0) return;

      const userIdSet = new Set(userIds.filter(Boolean).map(String));

      const { taskFormData } = (yield select((state: any) => state.supplierTaskManage)) as {
        taskFormData: TaskAddRequest;
      };

      const updatedFormData = { ...taskFormData };

      // 1. 删除 userList 中的用户
      updatedFormData.userList = (updatedFormData.userList || []).filter(
        (user: PersonnelItem) => !userIdSet.has(String(user.id || user.userId))
      );

      // 2. 删除 indicatorList(指标对象) 中该用户的指标
      updatedFormData.indicatorList = (updatedFormData.indicatorList || []).filter(
        (item: IndicatorItem) => !userIdSet.has(String(item.userId))
      );

      // 3. 删除 selectedSuppliers(供应商对象) 中 evaluator(评价人员对象) 对象
      updatedFormData.selectedSuppliers = (updatedFormData.selectedSuppliers || [])
        .map((supplier: SupplierItem) => {
          const newEvaluators = (supplier.evaluators || []).filter(
            (evaluator: PersonnelItem) => !userIdSet.has(String(evaluator.id))
          );
          return {
            ...supplier,
            evaluators: newEvaluators,
          };
        })
        .filter((supplier) => (supplier.evaluators || []).length > 0);

      // 保存更新
      yield put({ type: 'saveTaskFormData', payload: updatedFormData });
    },


    /**
     * 下一步
     * 将当前步骤索引加1
     */
    *nextStep(_: any, { put, select }: { put: any; select: any }) {
      const { currentStep } = (yield select((state: any) => state.supplierTaskManage)) as { currentStep: number };
      yield put({ type: 'saveCurrentStep', payload: currentStep + 1 });
    },

    /**
     * 上一步
     * 将当前步骤索引减1
     */
    *prevStep(_: any, { put, select }: { put: any; select: any }) {
      const { currentStep } = (yield select((state: any) => state.supplierTaskManage)) as { currentStep: number };
      yield put({ type: 'saveCurrentStep', payload: currentStep - 1 });
    },
    /*
    设置当前步骤
    */
    *setCurrentStep({ payload }: { payload: number }, { put }: { put: any }) {
      yield put({ type: 'saveCurrentStep', payload });
    },

    /**
     * 重置状态
     * 清空表单数据并将步骤重置为第一步
     */
    *resetState(_: any, { put }: { put: any }) {
      // 重置表单数据
      yield put({
        type: 'saveTaskFormData',
        payload: {}
      });
      // 重置步骤到第一步
      yield put({
        type: 'saveCurrentStep',
        payload: 0
      });
    },
    /**
     * 设置模式
     */
    *setMode({ payload }: { payload: 'add' | 'edit' | 'division' }, { put }: { put: any }) {
      yield put({ type: 'saveMode', payload });
    },
  },

  // reducers用于更新状态
  reducers: {
    /**
     * 保存当前步骤
     */
    saveCurrentStep(state, { payload }) {
      return { ...state, currentStep: payload };
    },
    /**
     * 保存模式
     */
    saveMode(state, { payload }) {
      return { ...state, mode: payload };
    },
    /**
     * 保存加载状态
     */
    saveLoading(state, { payload }) {
      return { ...state, loading: payload };
    },
    /**
     * 保存详情加载状态
     */
    saveDetailLoading(state, { payload }) {
      return { ...state, detailLoading: payload };
    },
    /**
     * 保存任务表单数据
     */
    saveTaskFormData(state, { payload }) {
      return { ...state, taskFormData: payload };
    },
    /**
     * 保存任务详情数据
     */
    saveTaskDetail(state, { payload }) {
      return { ...state, taskDetail: payload };
    },
  },
};

export default SupplierTaskModel;