<template>
  <section element-loading-text="请稍后..." class="content">
    <div class="part-box">
      <el-form
        ref="primaryForm"
        class="part-filter-form"
        inline
        :model="formSearch"
      >
        <el-form-item label="课程名称">
          <el-input v-model="formSearch.name" placeholder="请输入课程名称" />
        </el-form-item>
        <el-form-item label="课程代码">
          <el-input v-model="formSearch.code" placeholder="请输入课程代码" />
        </el-form-item>
        <el-form-item label="层次">
          <el-select v-model="formSearch.level" placeholder="请选择" clearable>
            <el-option
              v-for="item in levelList"
              :key="item.value"
              :label="item.label"
              :value="item.value"
            />
          </el-select>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" @click="handleSearchBtn">查询</el-button>
          <el-button type="danger" plain @click="resetPrimaryForm">
            重置
          </el-button>
        </el-form-item>
      </el-form>

      <!-- <div class="part-box-action">
        <div>
          <el-button
            type="danger"
            plain
            :disabled="noBatchSelected"
            icon="icon icon-play"
            @click="deleteByIds"
            >删除
          </el-button>
          <el-button
            type="primary"
            plain
            icon="icon icon-import"
            @click="importCourse"
            >导入</el-button
          >
          <el-button
            type="primary"
            plain
            icon="icon icon-export"
            :loading="downloading"
            @click="exportCourse"
            >导出</el-button
          >
        </div>
        <el-button
          v-if="authButtons.includes('index_course-add_course')"
          type="primary"
          icon="icon icon-plus-white"
          @click="insertCourse"
          >新增</el-button
        >
      </div> -->
    </div>

    <div class="part-box">
      <div class="icon-btn-group">
        <svg-btn
          name="xinzeng"
          v-if="authButtons.includes('index_course-add_course')"
          @click="insertCourse"
          >新增</svg-btn
        >
        <svg-btn name="daoru" @click="importCourse">导入</svg-btn>
        <svg-btn name="daochu" @click="exportCourse">导出</svg-btn>
        <svg-btn name="shanchu" :disabled="noBatchSelected" @click="deleteByIds"
          >删除</svg-btn
        >
      </div>
      <!-- 页面列表 -->
      <!-- FIXME: element-ui style bug https://github.com/ElemeFE/element/issues/16167 -->
      <el-table :data="tableData" resizable @selection-change="selectChange">
        <el-table-column type="selection" width="50" align="center" />
        <el-table-column prop="id" label="课程ID" width="80" />
        <el-table-column prop="name" label="课程名称" width="180" />
        <el-table-column prop="code" label="课程代码" />
        <el-table-column label="层次">
          <span slot-scope="scope">{{ getLevel(scope.row.level) }}</span>
        </el-table-column>
        <el-table-column
          sortable
          prop="updateTime"
          label="更新时间"
          width="170"
        />
        <el-table-column label="操作" width="220">
          <div slot-scope="scope">
            <!-- <el-button
                size="mini"
                type="primary"
                plain
                icon="el-icon-share"
                @click="relation(scope.row)"
              >
                关联专业
              </el-button> -->
            <el-button
              size="medium"
              type="text"
              class="normal"
              @click="editCourse(scope.row)"
            >
              编辑
            </el-button>
            <el-button
              size="medium"
              type="text"
              class="normal"
              @click="toKnowledge(scope.row)"
            >
              知识点
            </el-button>
            <el-button
              size="medium"
              type="text"
              class="normal"
              @click="deleteById(scope.row)"
            >
              删除
            </el-button>
          </div>
        </el-table-column>
      </el-table>
      <div class="part-page">
        <el-pagination
          :current-page="currentPage"
          :page-size="10"
          :page-sizes="[10, 20, 50, 100, 200, 300]"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          @current-change="handleCurrentChange"
          @size-change="handleSizeChange"
        >
        </el-pagination>
      </div>
    </div>

    <!-- 添加或新增课程弹出框 -->
    <el-dialog
      title="课程"
      width="450px"
      :visible.sync="courseDialog"
      :modal="true"
      append-to-body
      custom-class="side-dialog"
      @close="dialogBeforeClose"
    >
      <el-form
        ref="courseForm"
        class="form-tight"
        :model="courseForm"
        :rules="rules"
        label-width="90px"
      >
        <el-form-item label="课程名称" prop="name">
          <el-input
            v-model="courseForm.name"
            auto-complete="off"
            placeholder="请输入课程名称"
          />
        </el-form-item>
        <br />
        <el-form-item label="课程代码" prop="code">
          <el-input
            v-model="courseForm.code"
            auto-complete="off"
            placeholder="请输入课程代码"
          />
        </el-form-item>
        <br />
        <el-form-item label="层次" prop="level">
          <el-select v-model="courseForm.level" placeholder="请选择">
            <el-option
              v-for="item in levelList"
              :key="item.value"
              :label="item.label"
              :value="item.value"
            />
          </el-select>
        </el-form-item>
      </el-form>

      <div slot="footer">
        <el-button type="primary" @click="submitForm">保存</el-button>
        <el-button type="danger" plain @click="courseDialog = false"
          >取消</el-button
        >
      </div>
    </el-dialog>

    <!-- 导入弹窗 -->
    <import-file-dialog
      ref="ImportCourseDialog"
      dialog-title="导入课程"
      :template-url="courseTemplateUrl"
      :upload-url="uploadCourseUrl"
      @uploaded="uploadSuccess"
    ></import-file-dialog>

    <!-- 导入错误信息列表 -->
    <el-dialog title="错误提示" :visible.sync="errDialog" append-to-body>
      <div
        v-for="errMessage in errMessages"
        :key="errMessage.lineNum"
        class="text-danger"
      >
        第{{ errMessage.lineNum }}行：{{ errMessage.msg }}
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="errDialog = false">确定</el-button>
      </span>
    </el-dialog>
  </section>
</template>

<script>
import { QUESTION_API } from "@/constants/constants.js";
import { ENABLE_TYPE, LEVEL_TYPE } from "../constants/constants.js";
import { mapState, mapGetters } from "vuex";
import { courseExportApi } from "../api";
import { downloadByApi } from "@/plugins/download";
import ImportFileDialog from "@/components/ImportFileDialog.vue";
import SvgBtn from "@/components/SvgBtn.vue";

export default {
  name: "Course",
  components: { ImportFileDialog, SvgBtn },
  data() {
    return {
      formSearch: {
        name: "",
        code: "",
        enable: "true",
        level: "",
      },
      courseForm: {
        id: null,
        name: "",
        code: "",
        level: "ALL",
        enable: "true",
      },
      statusList: ENABLE_TYPE,
      levelList: LEVEL_TYPE,
      selectedCourseIds: [],
      tableData: [],
      currentPage: 1,
      pageSize: 10,
      total: 10,

      uploadCourseUrl: `${QUESTION_API}/course/import`,
      courseTemplateUrl: `${QUESTION_API}/course/importTemplate`,
      uploadHeaders: {},
      errMessages: [],
      errDialog: false,

      courseDialog: false,
      relationDialog: false,
      downloading: false,

      rules: {
        name: [
          {
            required: true,
            message: "请输入课程名称",
            trigger: "blur",
          },
          {
            max: 30,
            message: "课程名称最多30个字符",
            trigger: "blur",
          },
        ],
        code: [
          {
            required: true,
            message: "请输入课程代码",
            trigger: "blur",
          },
          {
            max: 30,
            message: "课程代码最多30个字符",
            trigger: "blur",
          },
          {
            pattern: new RegExp(`^[a-zA-Z0-9-_\\s\\[\\]\\(\\)\\{\\}]{1,30}$`),
            message: "只能包含字母、数字、括号、空格、下划线和短横线",
            trigger: "blur",
          },
        ],
        level: [
          {
            required: true,
            message: "请选择层次",
            trigger: "change",
          },
        ],
        status: [
          {
            required: true,
            message: "请选择状态",
            trigger: "change",
          },
        ],
      },
    };
  },
  computed: {
    ...mapState({
      user: (state) => state.user,
    }),
    ...mapGetters(["authButtons"]),
    noBatchSelected() {
      return this.selectedCourseIds.length === 0;
    },
    courseIds() {
      var courseIds = "";
      for (let courseId of this.selectedCourseIds) {
        if (!courseIds) {
          courseIds += courseId;
        } else {
          courseIds += "," + courseId;
        }
      }
      return courseIds;
    },
  },
  //初始化查询
  created() {
    this.searchForm();
    this.uploadHeaders = {
      key: this.user.key,
      token: this.user.token,
    };
  },
  methods: {
    handleSizeChange(val) {
      this.pageSize = val;
      this.currentPage = 1;
      this.searchForm();
    },
    dialogBeforeClose() {
      this.$refs.courseForm.clearValidate();
    },
    submitAddRelationForm() {
      this.$refs.addRelationForm.validate((valid) => {
        if (valid) {
          var param = new URLSearchParams(this.addRelationForm);
          var url = QUESTION_API + "/courseSpeciatlyRelation/add?" + param;
          this.$httpWithMsg.post(url, this.speciallyForm).then(() => {
            this.$notify({
              type: "success",
              message: "添加成功！",
            });
            this.addRelationDialog = false;
          });
        } else {
          console.log("error submit!");
          return false;
        }
      });
    },
    getTag(status) {
      if (status == true) {
        return "success";
      } else if (status == false) {
        return "danger";
      }
      return status;
    },
    getLevel(level) {
      if (level == "ZSB") {
        return "专升本";
      } else if (level == "GQZ") {
        return "高起专";
      } else if (level == "GQB") {
        return "高起本";
      } else {
        return "不限";
      }
    },
    handleSearchBtn() {
      this.currentPage = 1;
      this.searchForm();
    },
    searchForm() {
      let searchLock = true;
      setTimeout(() => {
        if (searchLock) {
          this.loading = true;
        }
      }, 500);
      var param = new URLSearchParams(this.formSearch);
      var url =
        QUESTION_API +
        "/course/coursePage/" +
        this.currentPage +
        "/" +
        this.pageSize +
        "?" +
        param;
      this.$httpWithMsg
        .get(url)
        .then((response) => {
          this.tableData = response.data.content;
          this.total = response.data.totalElements;
        })
        .finally(() => {
          searchLock = false;
          this.loading = false;
        });
    },
    handleCurrentChange(val) {
      this.currentPage = val;
      this.searchForm();
    },
    selectChange(row) {
      this.selectedCourseIds = [];
      row.forEach((element) => {
        this.selectedCourseIds.push(element.id);
      });
      console.log(this.selectedCourseIds);
    },
    //新增
    insertCourse() {
      this.courseForm.id = null;
      this.courseForm.name = null;
      this.courseForm.code = null;
      this.courseForm.level = "ALL";
      this.courseForm.enable = "true";

      this.courseDialog = true;
    },
    //修改
    editCourse(row) {
      this.courseForm = Object.assign({}, row);
      this.courseForm.enable = row.enable ? "true" : "false";
      this.courseId = row.id;

      this.courseDialog = true;
    },
    async exportCourse() {
      if (this.downloading) return;
      this.downloading = true;

      const res = await downloadByApi(() => {
        return courseExportApi(this.formSearch);
      }).catch((e) => {
        this.$message.error(e || "下载失败，请重新尝试！");
      });
      this.downloading = false;

      if (!res) return;
      this.$message.success("下载成功！");
    },

    closeCourse() {
      this.courseDialog = false;
    },
    saveRelation() {},
    //保存(新增/修改)
    submitForm() {
      var url = QUESTION_API + "/course";
      if (null != this.courseForm.id) {
        //修改
        this.$refs.courseForm.validate((valid) => {
          if (valid) {
            this.$httpWithMsg.put(url, this.courseForm).then(() => {
              this.$notify({
                type: "success",
                message: "修改成功！",
              });
              this.searchForm();
              this.resetForm();
              this.courseDialog = false;
            });
          } else {
            console.log("error submit!");
            return false;
          }
        });
      } else {
        this.$refs.courseForm.validate((valid) => {
          if (valid) {
            this.$httpWithMsg.post(url, this.courseForm).then(() => {
              this.$notify({
                type: "success",
                message: "添加成功",
              });
              this.searchForm();
              this.resetForm();
              this.courseDialog = false;
            });
          } else {
            console.log("error submit!");
            return false;
          }
        });
      }
    },
    //重置
    resetForm() {
      this.$refs.courseForm.resetFields();
    },
    resetPrimaryForm() {
      this.formSearch = {
        name: "",
        code: "",
        enable: "",
        level: "",
      };
      this.$refs.primaryForm.resetFields();
    },
    //删除单个数据
    deleteById(row) {
      this.$confirm("是否删除该课程？", "系统通知", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        var url = QUESTION_API + "/course/delete";
        let temCourseIds = [];
        temCourseIds.push(row.id);
        this.$httpWithMsg
          .post(url, new URLSearchParams({ courseIds: temCourseIds }))
          .then(() => {
            this.$notify({
              type: "success",
              message: "删除成功！",
            });
            this.searchForm();
          });
      });
    },
    //知识点
    toKnowledge(row) {
      this.$router.push({
        path: "/questions/property_info/" + row.id,
      });
    },
    //删除多条数据
    deleteByIds() {
      if (this.selectedCourseIds.length === 0) {
        this.$notify({
          type: "warning",
          message: "请选择要删除的课程",
        });
      } else {
        this.$confirm("确定要删除所选课程吗？", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "error",
        }).then(() => {
          var url = QUESTION_API + "/course/delete";
          this.$httpWithMsg
            .post(
              url,
              new URLSearchParams({ courseIds: this.selectedCourseIds })
            )
            .then(() => {
              this.$notify({
                type: "success",
                message: "删除成功！",
              });
              this.searchForm();
            });
        });
      }
    },
    //启用
    enableByIds() {
      if (this.selectedCourseIds.length === 0) {
        this.$notify({
          type: "warning",
          message: "请选择要启用的课程",
        });
      } else {
        this.$confirm("确定要启用所选课程吗？", "系统通知", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }).then(() => {
          var url = QUESTION_API + "/course/enable/" + this.courseIds;
          this.$httpWithMsg.put(url, {}).then(() => {
            this.$notify({
              type: "success",
              message: "启用成功！",
            });
            this.searchForm();
          });
        });
      }
    },
    enableById(row) {
      this.$confirm("是否启用该课程？", "系统通知", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        var url = QUESTION_API + "/course/enable/" + row.id;
        this.$httpWithMsg.put(url, {}).then(() => {
          this.$notify({
            type: "success",
            message: "启用成功！",
          });
          this.searchForm();
        });
      });
    },
    //禁用
    disableByIds() {
      if (this.selectedCourseIds.length === 0) {
        this.$notify({
          type: "warning",
          message: "请选择要禁用的课程",
        });
      } else {
        this.$confirm("确定要禁用所选课程吗？", "系统通知", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "error",
        }).then(() => {
          var url = QUESTION_API + "/course/disable/" + this.courseIds;
          this.$httpWithMsg.put(url, {}).then(() => {
            this.$notify({
              type: "success",
              message: "禁用成功！",
            });
            this.searchForm();
          });
        });
      }
    },
    //禁用
    disableById(row) {
      this.$confirm("是否禁用该课程？", "系统通知", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "error",
      }).then(() => {
        var url = QUESTION_API + "/course/disable/" + row.id;
        return this.$httpWithMsg.put(url, {}).then(() => {
          this.$notify({
            type: "success",
            message: "禁用成功！",
          });
          return this.searchForm();
        });
      });
    },
    //导入
    importCourse() {
      this.$refs.ImportCourseDialog.open();
    },
    uploadSuccess(response) {
      const { hasError, failRecords } = response.data;
      if (!hasError) {
        this.$notify({
          message: "上传成功",
          type: "success",
        });
        this.searchForm();
      } else {
        this.errMessages = failRecords;
        this.errDialog = true;
      }
    },
  },
};
</script>
