<template>
    <v-container fluid class="body-color">
      <!-- ****** EDITS COURSES DETAILS ****** -->

      <v-dialog v-model="editStudentDialog" max-width="600px" scrollable persistent>

        <v-card flat class="Card-style pa-2">

          <v-layout>
            <v-flex xs12>
              <label class="title text-xs-center">Edit Course</label>
              <v-icon size="24" class="right" @click="editStudentDialog = false">cancel</v-icon>
            </v-flex>
          </v-layout>
          <v-card-text>
            <v-form ref="form">
              <v-container fluid>
                <v-layout>
                  <v-flex xs12 class="text-xs-center text-sm-center text-md-center text-lg-center">
                    <v-avatar size="100px" v-if="!editedItem.courseImageUrl && !editImageUrl">
                      <img src="/static/icon/user.png" />
                    </v-avatar>
                    <img
                      :src="editedItem.courseImageUrl"
                      v-else-if="editedItem.courseImageUrl && !editImageUrl"
                      height="150"
                      style="border-radius:50%; width:150px"
                    />
                    <img
                      v-if="editImageUrl"
                      :src="editImageUrl"
                      style="border-radius:50%; width:150px;height:150px"
                    />
                    <input
                      type="file"
                      style="display: none"
                      ref="editDataImage"
                      accept="image/*"
                      @change="onEditFilePicked"
                    />
                  </v-flex>
                </v-layout>
                <v-layout wrap>
                  <v-flex xs12 sm12>
                    <v-layout>
                      <v-flex xs4 sm5 class="pt-4 subheading">
                        <label class="right hidden-xs-only hidden-sm-only">Select Class:</label>
                        <label class="right hidden-lg-only hidden-md-only hidden-xl-only">Class:</label>
                      </v-flex>
                      <v-flex xs8 sm7 class="ml-3">
                        <v-select
                          :items="addclass"
                          label="Select Class"
                          v-model="editedItem.select"
                          item-text="classNum"
                          item-value="_id"
                          name="Select Class"
                          required
                        ></v-select>
                      </v-flex>
                    </v-layout>
                    <v-layout>
                      <v-flex xs4 sm5 class="pt-4 subheading">
                        <label class="right hidden-xs-only hidden-sm-only">Course Name:</label>
                        <label class="right hidden-lg-only hidden-md-only hidden-xl-only">Course:</label>
                      </v-flex>
                      <v-flex xs8 sm7 class="ml-3">
                        <v-text-field

                          v-model="editedItem.courseName"

                          placeholder="fill your Course Name"
                          type="text"
                          required
                        ></v-text-field>
                      </v-flex>
                    </v-layout>
                    <v-layout>
                      <v-flex xs4 sm5 class="pt-4 subheading">
                        <label class="right hidden-xs-only hidden-sm-only">Upload Image:</label>
                        <label class="right hidden-lg-only hidden-md-only hidden-xl-only">Upload:</label>
                      </v-flex>
                      <v-flex xs8 sm7 class="ml-3">
                        <v-text-field
                          label="Select Image"
                          @click="pickEditFile"
                          v-model="editImageName"
                          append-icon="attach_file"
                        ></v-text-field>
                      </v-flex>
                    </v-layout>
                  </v-flex>
                </v-layout>
                <v-layout>
                  <v-flex xs12 sm12 class="px-0 mx-0">
                    <v-layout class="right">
                      <v-btn @click="save" round dark :loading="editLoading" class="add-button">Save</v-btn>
                    </v-layout>
                  </v-flex>
                </v-layout>
              </v-container>
            </v-form>
          </v-card-text>
        </v-card>
      </v-dialog>
  
      <!-- ****** PROFILE VIEW STUDENTS DEATILS ******  -->

      <v-dialog v-model="profileStudentDialog" max-width="600px" scrollable persistent>

        <v-card flat class="Card-style pa-3">

          <v-layout>
            <v-flex xs12>
              <label class="title text-xs-center">View Course</label>
              <v-icon size="24" class="right" @click="profileStudentDialog = false">cancel</v-icon>
            </v-flex>
          </v-layout>
          <v-card-text>
            <v-flex align-center justify-center layout text-xs-center class="mt-3">
              <v-avatar size="100px">
                <img src="/static/icon/user.png" v-if="!editedItem.courseImageUrl" />
                <img :src="editedItem.courseImageUrl" v-else-if="editedItem.courseImageUrl" />
              </v-avatar>
            </v-flex>
            <v-container grid-list-md>
              <v-layout wrap>
                <v-flex xs12>
                  <v-layout>
                    <v-flex xs6 sm6>
                      <h5 class="right my-1">
                        <b>Course :</b>
                      </h5>
                    </v-flex>
                    <v-flex sm6 xs6>

                      <h5 class="my-1 left">{{ editedItem.courseName }}</h5>

                    </v-flex>
                  </v-layout>
                </v-flex>
              </v-layout>
            </v-container>
          </v-card-text>
        </v-card>
      </v-dialog>
  
      <!-- ****** STUDENTS TABLE ****** -->
      <v-toolbar color="transparent" flat>
        <v-btn
          fab
          dark
          class="open-dialog-button hidden-xl-only hidden-md-only hidden-lg-only"
          small
          @click="addCourseDialog = true"
        >
          <v-icon dark>add</v-icon>
        </v-btn>
        <v-btn
          round
          class="open-dialog-button hidden-sm-only hidden-xs-only"
          dark
          @click="addCourseDialog = true"
        >
          <v-icon class="white--text pr-1" size="20">add</v-icon>Add Course
        </v-btn>
        <v-card-actions class="hidden-xs-only hidden-sm-only">
          <v-flex md13 lg12>
            <v-layout>
              <v-flex lg6 md6>
                <v-select
                  :items="addclass"
                  label="Select Class"
                  v-model="selectStudents.select"
                  item-text="classNum"
                  item-value="_id"
                  name="Select Class"
                  :rules="classRules"
                  required
                  class="ml-2"
                ></v-select>
              </v-flex>
            </v-layout>
          </v-flex>
        </v-card-actions>
        <v-spacer></v-spacer>
        <v-btn
          @click="getCourses()"
          round
          dark
          :loading="loading"

          class="open-dialog-button hidden-xs-only hidden-sm-only"

        >Find</v-btn>
        <v-card-title class="body-1" v-show="show">
          <v-btn icon large flat @click="displaySearch">
            <v-avatar size="27">
              <img src="/static/icon/search.png" alt="icon" />
            </v-avatar>
          </v-btn>
        </v-card-title>

        <v-flex xs8 sm7 lg2 md3 v-if="showSearch">

          <v-layout>

            <v-text-field
              autofocus
              v-model="search"
              label="Search"
              prepend-inner-icon="search"
              color="primary"
            ></v-text-field>

            <v-icon @click="closeSearch" color="error">close</v-icon>
          </v-layout>
        </v-flex>
      </v-toolbar>
      <v-card flat class="elevation-0 transparent">
        <v-flex class="hidden-xl-only hidden-lg-only hidden-md-only">
          <v-layout>
            <!-- <v-flex xs4>
              <label class="right mt-4">Select Class:</label>
            </v-flex>-->
            <v-flex xs12>
              <v-select
                :items="addclass"
                label="Select Class"
                v-model="selectStudents.select"
                item-text="classNum"
                item-value="_id"
                name="Select Class"
                :rules="classRules"
                class="px-2"
              ></v-select>
            </v-flex>
          </v-layout>
          <v-layout>
            <v-flex xs5 class="mx-auto mb-2">
              <v-btn @click="getCourses()" block round dark :loading="loading" class="add-button">Find</v-btn>
            </v-flex>
          </v-layout>
        </v-flex>
      </v-card>
      <v-data-table
        :headers="headers"
        :items="courseData"
        :pagination.sync="pagination"
        :search="search"
      >
        <template slot="items" slot-scope="props">
          <tr class="tr">
            <td class="text-xs-center td td-row">
              <v-avatar size="40">
                <img :src="props.item.courseImageUrl" v-if="props.item.courseImageUrl" />
                <img src="/static/icon/user.png" v-else-if="!props.item.courseImageUrl" />
              </v-avatar>
            </td>

            <td class="text-xs-center td td-row">{{ props.item.courseName}}</td>

            <td class="text-xs-center td td-row">
              <span>
                <v-tooltip top>
                  <img
                    slot="activator"
                    style="cursor:pointer; width:25px; height:25px; "
                    class="mr-3"
                    @click="profile(props.item)"
                    src="/static/icon/view.png"
                  />
                  <span>View</span>
                </v-tooltip>
                <v-tooltip top>
                  <img
                    slot="activator"
                    style="cursor:pointer; width:20px; height:18px; "
                    class="mr-3"
                    @click="editItem(props.item)"
                    src="/static/icon/edit.png"
                  />
                  <span>Edit</span>
                </v-tooltip>
                <v-tooltip top>
                  <img
                    slot="activator"
                    style="cursor:pointer; width:20px; height:20px; "
                    class="mr-3"
                    @click="deleteItem(props.item)"
                    src="/static/icon/delete.png"
                  />
                  <span>Delete</span>
                </v-tooltip>
              </span>
            </td>
          </tr>
        </template>
        <v-alert
          slot="no-results"
          :value="true"
          color="error"
          icon="warning"
        >Your search for "{{ search }}" found no results.</v-alert>
      </v-data-table>
      <!-- ****** Add CourseS DETAILS****** -->

      <v-dialog v-model="addCourseDialog" max-width="500" v-if="addCourseDialog" persistent>

        <v-card flat class="Card-style pa-2">

          <v-layout>
            <v-flex xs12>
              <label class="title text-xs-center">Add Course</label>

              <v-icon size="24" class="right" @click="closeAddCourseModel">cancel</v-icon>

            </v-flex>
          </v-layout>
          <v-container fluid>
            <v-layout align-center>
              <v-flex xs12>
                <v-flex xs12 sm12>
                  <v-form ref="form" v-model="valid" lazy-validation>
                    <v-layout>
                      <v-flex
                        xs12
                        class="text-xs-center text-sm-center text-md-center text-lg-center"
                      >

                        <v-avatar size="100px" v-if="!imageUrl">
                          <img src="/static/icon/user.png" />

                        </v-avatar>
                        <input
                          type="file"
                          style="display: none"
                          ref="image"
                          accept="image/*"
                          @change="onFilePicked"
                        />
                        <img
                          :src="imageData.imageUrl"
                          height="150"
                          v-if="imageUrl"
                          style="border-radius:50%; width:200px"
                        />
                      </v-flex>
                    </v-layout>
                    <v-layout wrap>
                      <v-flex xs12 sm12>
                        <v-layout>
                          <v-flex x4 sm4 class="pt-4 subheading">
                            <label class="right hidden-xs-only hidden-sm-only">Select Class:</label>
                            <label class="right hidden-lg-only hidden-md-only hidden-xl-only">Class:</label>
                          </v-flex>
                          <v-flex xs8 sm8 class="ml-3">
                            <v-select
                              :items="addclass"
                              label="Select Class"
                              v-model="addCourses.select"
                              item-text="classNum"
                              item-value="_id"
                              name="Select Class"
                              :rules="classRules"
                              @change="getSections(addCourses.select)"
                              required
                            ></v-select>
                          </v-flex>
                        </v-layout>
                      </v-flex>
                    </v-layout>
                    <v-layout wrap>
                      <v-flex xs12 sm12>
                        <v-layout>
                          <v-flex xs4 sm4 class="pt-4 subheading">
                            <label class="right hidden-xs-only hidden-sm-only">Course Name:</label>
                            <label class="right hidden-lg-only hidden-md-only hidden-xl-only">Course:</label>
                          </v-flex>
                          <v-flex xs8 sm8 class="ml-3">
                            <v-text-field

                              v-model="addCourses.courseName"

                              placeholder="fill your Course name"
                              type="text"
                              :rules="courseRules"
                              required
                            ></v-text-field>
                          </v-flex>
                        </v-layout>
                      </v-flex>
                      <v-flex xs12 sm12>
                        <v-layout>
                          <v-flex xs4 class="pt-4 subheading">
                            <label class="right hidden-xs-only hidden-sm-only">Upload Image:</label>
                            <label class="right hidden-lg-only hidden-md-only hidden-xl-only">Upload :</label>
                          </v-flex>
                          <v-flex xs8 class="ml-3">
                            <v-text-field
                              label="Select Image"
                              @click="pickFile"
                              v-model="imageName"
                              append-icon="attach_file"
                            ></v-text-field>
                          </v-flex>
                        </v-layout>
                      </v-flex>
                    </v-layout>
                    <v-layout>
                      <v-flex xs12 sm12>
                        <v-layout class="right">
                          <v-btn @click="submit" round dark :loading="loading" class="add-button">Add</v-btn>
                        </v-layout>
                      </v-flex>
                    </v-layout>
                  </v-form>
                </v-flex>
              </v-flex>
            </v-layout>
          </v-container>
        </v-card>
      </v-dialog>
      <v-snackbar
        :timeout="timeout"
        :top="y === 'top'"
        :right="x === 'right'"
        :vertical="mode === 'vertical'"
        v-model="snackbar"
        :color="color"
      >{{ text }}</v-snackbar>
      <div class="loader" v-if="showLoader">
        <v-progress-circular indeterminate color="white"></v-progress-circular>
      </div>
    </v-container>
  </template>
  
  <script>
  import http from "@/Services/http.js";
  import moment from "moment";
  import countryList from "@/script/country.js";
  import parent from "@/script/parents.js";
  
  export default {
    data: () => ({
      showNext: false,
      snackbar: false,
      y: "top",
      x: "right",
      role: "",
      mode: "",
      append: "",
      timeout: 3000,
      text: "",
      show: true,
      color: "",
      showSearch: false,
      showLoader: false,
      loading: false,
      editLoading: false,
      date: null,
      search: "",
      menu: false,
      menu1: false,
      editStudentDialog: false,
      profileStudentDialog: false,
      addCourseDialog: false,
      valid: true,
      addclass: [],
      addSection: [],
      pagination: {

        rowsPerPage: 10,

      },
      imageData: {},
      imageName: "",
      imageUrl: "",
      imageFile: "",
      editImageName: "",
      editImageUrl: "",

      courseRules: [(v) => !!v || " Course Name is required"],
      classRules: [(v) => !!v || " Class Name is required"],
      sectionRules: [(v) => !!v || " Section Name is required"],

      errorMessages: "",
      headers: [
        {
          text: "Image",
          value: "courseImageUrl",
          sortable: false,

          align: "center",

        },
        {
          text: "Course",
          value: "course",
          sortable: false,

          align: "center",

        },

        { text: "Action", value: "", sortable: false, align: "center" },

      ],
      courseData: [],
      editedIndex: -1,
      addCourses: {},
      selectStudents: {
        select: "",

        selectSection: "",

      },

      editedItem: {},

    }),

    watch: {
      addCourseDialog: function (val) {
        if (!val) {
          this.addCourses = [];
          this.imageName = "";
          this.imageFile = "";
          this.imageUrl = "";
        }
      },
    },

    methods: {
      getCourses() {
        this.showLoader = true;
        http()
          .get("/getCourseesList", {
            params: {

              classId: this.selectStudents.select,
            },

          })

          .then((response) => {

            this.courseData = response.data.data;
            this.showLoader = false;
          })

          .catch((err) => {

            //   console.log("err====>", err);

            this.showLoader = false;

            this.snackbar = true;
            this.color = "error";
            this.text = error.response.data.message;

          });
      },
      getSections(_id) {
        var token = this.$store.state.token;
        this.showLoader = true;
        http()
          .get(
            "/getSectionsList",
            { params: { classId: _id } },
            {

              headers: { Authorization: "Bearer " + token },

            }
          )

          .then((response) => {

            this.addSection = response.data.data;
            this.showLoader = false;
          })

          .catch((err) => {

            this.showLoader = false;
          });
      },
      pickFile() {
        this.$refs.image.click();
      },
      pickEditFile() {
        this.$refs.editDataImage.click();
      },

      dates: function (date) {

        return moment(date).format("MMMM DD, YYYY");
        return date;
      },
      onFilePicked(e) {
        // console.log(e)
        const files = e.target.files;
        this.imageData.upload = e.target.files[0];
        if (files[0] !== undefined) {
          this.imageName = files[0].name;
          if (this.imageName.lastIndexOf(".") <= 0) {
            return;
          }
          const fr = new FileReader();
          fr.readAsDataURL(files[0]);
          fr.addEventListener("load", () => {
            this.imageUrl = fr.result;
            this.imageFile = files[0]; // this is an image file that can be sent to server...
            this.imageData.imageUrl = URL.createObjectURL(this.imageFile);
          });
        } else {
          this.imageName = "";
          this.imageFile = "";
          this.imageUrl = "";
        }
      },
      onEditFilePicked(e) {

        //   console.log(e);

        const files = e.target.files;
        if (files[0] !== undefined) {
          this.editImageName = files[0].name;

          // console.log("this.editImageName", this.editImageName);

  
          if (this.editImageName.lastIndexOf(".") <= 0) {
            return;
          }
          const fr = new FileReader();
          fr.readAsDataURL(files[0]);
          fr.addEventListener("load", () => {
            this.editImageUrl = fr.result;
            this.editiImageFile = files[0]; // this is an image file that can be sent to server...
          });
        } else {
          this.editImageName = "";
          this.editiImageFile = "";
        }
      },
      editItem(item) {
        this.editedIndex = this.courseData.indexOf(item);
        this.editedItem = Object.assign({}, item);
        this.editStudentDialog = true;
      },
      profile(item) {
        this.editedIndex = this.courseData.indexOf(item);
        this.editedItem = Object.assign({}, item);
        this.profileStudentDialog = true;
      },
      deleteItem(item) {
        let deleteCourse = {

          courseId: item._id,

        };
        http()
          .delete(
            "/deleteCourse",
            confirm("Are you sure you want to delete this?") && {

              params: deleteCourse,

            }
          )

          .then((response) => {

            this.snackbar = true;
            this.text = response.data.message;
            this.color = "green";
            this.getCourses();
          })

          .catch((error) => {

            this.snackbar = true;
            this.text = error.response.data.message;
            this.color = "error";
          });
      },
      close() {
        this.editStudentDialog = false;
      },
      closeStudentProfile() {
        this.profileStudentDialog = false;
      },

      closeAddCourseModel() {
        this.addCourseDialog = false;

        //   this.courseData = [];

        this.addCourses = [];
        this.imageName = "";
        this.imageFile = "";
        this.imageUrl = "";
      },

      submit() {
        if (this.$refs.form.validate()) {
          let addCourse = {
            classId: this.addCourses.select,
            sectionId: this.addCourses.selectSection,

            courseName: this.addCourses.courseName,

          };
          if (this.imageUrl) {
            var str = this.imageUrl;
            const [baseUrl, imageUrl] = str.split(/,/);
            addCourse.upload = imageUrl;
          }
          this.loading = true;
          http()
            .post("/createCourse", addCourse)

            .then((response) => {

              this.snackbar = true;
              this.text = "New Course added successfully";
              this.color = "green";
              this.addCourseDialog = false;
              this.clear();
              this.loading = false;
            })

            .catch((error) => {

              this.snackbar = true;
              this.text = error.response.data.message;
              this.color = "error";
              this.loading = false;
            });
        }
      },
      clear() {
        this.$refs.form.reset();
        this.imageUrl = "";
      },
      save() {
        let editCourse = {
          courseId: this.editedItem._id,

          courseName: this.editedItem.courseName,

          classId: this.editedItem.select,

        };
        if (this.editImageUrl) {
          var str = this.editImageUrl;
          const [baseUrl, editImageUrl] = str.split(/,/);
          editCourse.upload = editImageUrl;
        }
        this.editLoading = true;
        http()
          .put("/updateCourse", editCourse)

          .then((response) => {

            this.snackbar = true;
            this.text = response.data.message;
            this.color = "green";
            this.imageUrl = "";
            this.getCourses();
            this.close();
            this.editLoading = false;
          })

          .catch((error) => {

            this.snackbar = true;
            this.text = error.response.data.statusText;
            this.color = "error";
            this.editLoading = false;
          });
      },
      displaySearch() {
        this.show = false;
        this.showSearch = true;
      },
      closeSearch() {
        this.showSearch = false;
        this.show = true;
        this.search = "";

      },

    },
    mounted() {
      var token = this.$store.state.token;
      http()
        .get("/getClassesList", {

          headers: { Authorization: "Bearer " + token },

        })

        .then((response) => {

          this.addclass = response.data.data;
        })

        .catch((error) => {

          this.showLoader = false;
          if (error.response.status === 401) {
            this.$router.replace({ path: "/" });
            this.$store.dispatch("setToken", null);
            this.$store.dispatch("Id", null);
            this.$store.dispatch("Role", null);
          }
        });

    },

  };
  </script>
  <style scoped>
  .active {
    background-color: gray;
    color: white !important;
  }
  .activebtn {
    color: black !important;
  }
  </style>