<template>
  <el-dialog
    class="modify-marker-question"
    :visible.sync="modalIsShow"
    append-to-body
    top="20px"
    :width="multiple ? '900px' : '450px'"
    :close-on-click-modal="false"
    :close-on-press-escape="false"
    :show-close="false"
    @opened="visibleChange"
  >
    <div slot="title"></div>

    <el-row type="flex" :gutter="10">
      <el-col :span="multiple ? 12 : 24">
        <div class="marker-box">
          <div class="user-title">人员</div>
          <div class="user-search">
            <el-input
              v-model="filterLabel"
              placeholder="请输入人员名称"
              clearable
              size="mini"
              prefix-icon="el-icon-search"
              @input="labelChange"
            ></el-input>
          </div>
          <div class="user-types">
            <div
              :class="['user-type', { 'is-active': userType === 'org' }]"
              @click="switchUserType('org')"
            >
              组织架构
            </div>
            <div
              :class="['user-type', { 'is-active': userType === 'course' }]"
              @click="switchUserType('course')"
            >
              课程
            </div>
          </div>
          <div class="user-tree">
            <el-tree
              ref="UserTree"
              :data="userTree"
              node-key="id"
              :default-checked-keys="selectedUserIds"
              :props="defaultProps"
              default-expand-all
            >
              <span class="custom-tree-node" slot-scope="{ node, data }">
                <el-checkbox
                  v-if="data.isUser"
                  v-model="node.checked"
                  @change="(val) => userChange(val, data)"
                >
                  {{ node.label }}（{{ data.loginName }}）
                </el-checkbox>
                <span v-else>{{ node.label }}</span>
                <div v-if="multiple" title="全选" @click.stop>
                  <el-checkbox
                    v-if="!data.isUser && data.children.length"
                    v-model="data.selected"
                    @change="(checked) => selectNodeAll(checked, data)"
                  ></el-checkbox>
                </div>
              </span>
            </el-tree>
          </div>
        </div>
      </el-col>
      <el-col v-if="multiple" :span="12">
        <div class="marker-box marker-box-uq">
          <el-form
            ref="modalFormRef"
            :rules="rules"
            :model="{}"
            label-width="100px"
            label-position="top"
          >
            <el-form-item prop="users" label="已选评卷员：">
              <el-tag
                v-for="user in selectedUsers"
                :key="user.id"
                closable
                :disable-transitions="false"
                @close="toDeleteUser(user)"
              >
                {{ user.name }}（{{ user.orgName }}）
              </el-tag>
            </el-form-item>
          </el-form>
        </div>
      </el-col>
    </el-row>

    <div class="marker-footer">
      <el-button type="primary" @click="confirm">确认</el-button>
      <el-button @click="cancel">取消</el-button>
    </div>

    <div slot="footer"></div>
  </el-dialog>
</template>

<script>
import { deepCopy } from "../../../plugins/utils";
import { questionTeatherUserQuery } from "../../base/api";

export default {
  name: "select-question-teacher",
  props: {
    users: {
      type: Array,
      default() {
        return [];
      },
    },
    courseCode: {
      type: String,
      default: "",
    },
    multiple: { type: Boolean, default: false },
  },
  data() {
    const usersValidator = (rule, value, callback) => {
      if (!this.selectedUserIds.length) {
        callback(new Error("请选择评卷员"));
      } else {
        callback();
      }
    };
    return {
      modalIsShow: false,
      filterLabel: "",
      userType: "course",
      courseUsers: [],
      orgUsers: [],
      userTree: [],
      userList: [],
      selectedUsers: [],
      selectedUserIds: [],
      defaultProps: {
        children: "children",
        label: "label",
      },
      rules: {
        users: [
          {
            required: true,
            validator: usersValidator,
            trigger: "change",
          },
        ],
      },
    };
  },
  watch: {
    courseCode(val, oldval) {
      if (val !== oldval) {
        this.getUserData();
      }
    },
  },
  mounted() {
    this.getUserData();
  },
  methods: {
    visibleChange() {
      this.filterLabel = "";
      this.userType = "course";
      this.selectedUsers = this.users.map((item) => {
        return { ...item };
      });
      this.selectedUserIds = this.users.map((item) => item.id);
      this.labelChange();
    },
    cancel() {
      this.modalIsShow = false;
    },
    open() {
      this.modalIsShow = true;
    },
    // user
    switchUserType(type) {
      this.filterLabel = "";
      this.userType = type;

      this.userTree =
        type === "org" ? deepCopy(this.orgUsers) : deepCopy(this.courseUsers);
      this.$refs.UserTree.setCheckedKeys(this.selectedUserIds);
    },
    async getUserData() {
      if (!this.courseCode) return;
      let params = {
        courseCode: this.courseCode,
      };
      const data = await questionTeatherUserQuery(params);
      this.parseUserData(data);
      this.getUserList();
    },
    parseUserData(data) {
      const parseUser = (list) => {
        return list.map((item) => {
          // org
          let nitem = {
            id: item.id,
            label: item.name,
            isUser: false,
            selected: false,
            children: [],
          };

          if (item["children"] && item["children"].length) {
            nitem.children = [...nitem.children, ...parseUser(item.children)];
          }
          // user
          if (item["sysUserList"] && item["sysUserList"].length) {
            let sysUserList = item.sysUserList;
            const users = sysUserList.map((user) => {
              const nuser = {
                id: user.id,
                userId: user.id,
                label: user.realName,
                name: user.realName,
                orgName: item.name,
                loginName: user.loginName,
                selected: false,
                isUser: true,
              };
              return nuser;
            });
            nitem.children = [...nitem.children, ...users];
          }

          return nitem;
        });
      };
      if (data.courseUserList && data.courseUserList.length) {
        this.courseUsers = data.courseUserList.map((user) => {
          return {
            id: user.id,
            userId: user.id,
            label: user.realName,
            name: user.realName,
            orgName: user.orgName,
            loginName: user.loginName,
            selected: false,
            isUser: true,
          };
        });
      }
      this.orgUsers = parseUser(data.blurryUserDtoList);
      this.userTree = deepCopy(this.orgUsers);
      this.getUserList();
    },
    getUserList() {
      let userList = [];
      const fetchUser = (users) => {
        users.forEach((item) => {
          if (item["children"] && item["children"].length) {
            fetchUser(item.children);
          } else {
            if (item.isUser) {
              let nitem = { ...item };
              nitem.label = `${nitem.name}(${nitem.orgName})`;
              userList.push(nitem);
            }
          }
        });
      };
      fetchUser(this.orgUsers);

      this.userList = userList;
    },
    labelChange() {
      if (!this.filterLabel) {
        this.switchUserType(this.userType);
      } else {
        const escapeRegexpString = (value = "") =>
          String(value).replace(/[|\\{}()[\]^$+*?.]/g, "\\$&");
        const reg = new RegExp(escapeRegexpString(this.filterLabel), "i");

        if (this.userType === "org") {
          this.userTree = this.userList.filter((item) => reg.test(item.name));
        } else {
          this.userTree = this.courseUsers.filter((item) =>
            reg.test(item.name)
          );
        }
      }
      this.$refs.UserTree.setCheckedKeys(this.selectedUserIds);
    },
    selectNodeAll(checked, data) {
      let users = [];
      const getUserIds = (list) => {
        list.forEach((item) => {
          item.selected = checked;
          if (item.children && item.children.length) {
            getUserIds(item.children);
          } else {
            if (item.isUser) users.push(item);
          }
        });
      };
      getUserIds(data.children);

      const userIds = users.map((u) => u.id);
      const selectedUserIds = this.selectedUsers.map((item) => item.id);

      let deleteUserIds = [];
      userIds.forEach((userId, uindex) => {
        const userPos = selectedUserIds.indexOf(userId);
        const includeUser = userPos !== -1;
        if (checked) {
          if (!includeUser) this.selectedUsers.push(users[uindex]);
        } else {
          if (includeUser) {
            deleteUserIds.push(userId);
          }
        }
      });
      this.selectedUsers = this.selectedUsers.filter(
        (u) => !deleteUserIds.includes(u.id)
      );
      this.selectedUserIds = this.selectedUsers.map((item) => item.id);
      this.$refs.UserTree.setCheckedKeys(this.selectedUserIds);
      this.$refs.modalFormRef.validateField("users");
    },
    userChange(checked, user) {
      if (!this.multiple) {
        this.selectedUsers = [];
        if (checked) {
          this.selectedUsers.push(user);
        }
        this.selectedUserIds = this.selectedUsers.map((item) => item.id);
        this.$refs.UserTree.setCheckedKeys(this.selectedUserIds);
        return;
      }

      if (checked) {
        this.selectedUsers.push(user);
      } else {
        this.selectedUsers = this.selectedUsers.filter(
          (item) => item.id !== user.id
        );
      }
      this.selectedUserIds = this.selectedUsers.map((item) => item.id);
      this.$refs.modalFormRef.validateField("users");
    },
    toDeleteUser(user) {
      const pos = this.selectedUsers.findIndex((item) => item.id === user.id);
      this.selectedUsers.splice(pos, 1);
      this.selectedUserIds = this.selectedUsers.map((item) => item.id);
      this.$refs.UserTree.setCheckedKeys(this.selectedUserIds);
      this.$refs.modalFormRef.validateField("users");
    },
    // confirm
    async confirm() {
      if (this.multiple) {
        const valid = await this.$refs.modalFormRef.validate().catch(() => {});
        if (!valid) return;
      }

      this.$emit("modified", this.selectedUsers);
      this.cancel();
    },
  },
};
</script>
