<template>
    <v-container fluid grid-list-md>
      <v-card flat>

        <v-toolbar class="card-styles" dark flat>

          <v-spacer></v-spacer>
          <v-toolbar-title>Import</v-toolbar-title>
          <v-spacer></v-spacer>
        </v-toolbar>
        <v-container fluid>
          <v-layout>
            <v-flex xs12>
              <v-layout wrap>
                <v-flex xs6 sm5 lg2 class="pt-4">
                  <label class="title right">Add Teacher:</label>
                </v-flex>
                <v-flex xs12 sm6 lg3>
                  <v-text-field v-model="teacherFileName" placeholder="Choose file" :disabled="true"></v-text-field>
                  <input
                    type="file"
                    style="display: none"
                    ref="file"

                    @change="convertFile"
                    id="fileInput"

                  />
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn class="open-dialog-button" round dark block @click="pickFile">

                    <v-icon small class="pr-1">refresh</v-icon>Upload
                  </v-btn>
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn
                    class="add-button"
                    round
                    dark
                    block
                    @click="importTeacher()"
                    :loading="loading"
                  >import</v-btn>

                </v-flex>
                <v-flex xs12 sm4 lg2 class="mt-1">
                  <download-csv :data="teacherData">

                    <v-btn class="blue lighten-2" dark block round>

                      <v-icon small class="pr-1">archive</v-icon>sample download
                    </v-btn>
                  </download-csv>
                </v-flex>
              </v-layout>
            </v-flex>
          </v-layout>
          <v-layout>
            <v-flex xs12>
              <v-layout wrap>
                <v-flex xs6 sm5 lg2 class="pt-4">
                  <label class="title right">Add Parent:</label>
                </v-flex>
                <v-flex xs12 sm6 lg3>
                  <v-text-field v-model="parentFileName" placeholder="Choose file" :disabled="true"></v-text-field>

                  <input
                    type="file"
                    style="display: none"
                    ref="parentfile"
                    @change="parentFile"
                    id="parentInput"
                  />

                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn class="open-dialog-button" round dark block @click="pickParentFile">

                    <v-icon small class="pr-1">refresh</v-icon>Upload
                  </v-btn>
                </v-flex>

                <v-flex xs6 sm4 lg2 class="mt-1" @click="importParent" :loading="parentLoading">

                  <v-btn class="add-button" round dark block>import</v-btn>

                </v-flex>
                <v-flex xs12 sm4 lg2 class="mt-1">
                  <download-csv :data="parentData">

                    <v-btn class="blue lighten-2" dark block round>

                      <v-icon small class="pr-1">archive</v-icon>sample download
                    </v-btn>
                  </download-csv>
                </v-flex>
              </v-layout>
            </v-flex>
          </v-layout>
          <v-layout>
            <v-flex xs12>
              <v-layout wrap>
                <v-flex xs6 sm5 lg2 class="pt-4">
                  <label class="title right">Add User:</label>
                </v-flex>
                <v-flex xs12 sm6 lg3>

                  <v-text-field placeholder="Choose file" v-model="userFileName" :disabled="true"></v-text-field>
                  <input
                    type="file"
                    style="display: none"
                    ref="userfile"
                    @change="userFile"
                    id="userInput"
                  />

                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn class="open-dialog-button" round dark block @click="pickUserFile">

                    <v-icon small class="pr-1">refresh</v-icon>Upload
                  </v-btn>
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn
                    class="add-button"
                    round
                    dark
                    block
                    @click="importUser"
                    :loading="userLoading"
                  >import</v-btn>

                </v-flex>
                <v-flex xs12 sm4 lg2 class="mt-1">
                  <download-csv :data="userData">

                    <v-btn class="blue lighten-2" dark block round>

                      <v-icon small class="pr-1">archive</v-icon>sample download
                    </v-btn>
                  </download-csv>
                </v-flex>
              </v-layout>
            </v-flex>
          </v-layout>
          <v-layout>
            <v-flex xs12>
              <v-layout wrap>
                <v-flex xs6 sm5 lg2 class="pt-4">
                  <label class="title right">Add Book:</label>
                </v-flex>
                <v-flex xs12 sm6 lg3>

                  <v-text-field placeholder="Choose file" v-model="bookFileName" :disabled="true"></v-text-field>
                  <input
                    type="file"
                    style="display: none"
                    ref="bookfile"
                    @change="bookFile"
                    id="bookInput"
                  />

                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn class="open-dialog-button" round dark block @click="pickBookFile">

                    <v-icon small class="pr-1">refresh</v-icon>Upload
                  </v-btn>
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn
                    class="add-button"
                    round
                    dark
                    block
                    @click="importBook"
                    :loading="BookLoading"
                  >import</v-btn>

                </v-flex>
                <v-flex xs12 sm4 lg2 class="mt-1">
                  <download-csv :data="bookData">

                    <v-btn class="blue lighten-2" dark block round>

                      <v-icon small class="pr-1">archive</v-icon>sample download
                    </v-btn>
                  </download-csv>
                </v-flex>
              </v-layout>
            </v-flex>
          </v-layout>
          <v-layout>
            <v-flex xs12>
              <v-layout wrap>
                <v-flex xs6 sm5 lg2 class="pt-4">
                  <label class="title right">Add Student:</label>
                </v-flex>
                <v-flex xs12 sm6 lg3>

                  <v-text-field placeholder="Choose file" v-model="bookStudentName" :disabled="true"></v-text-field>
                  <input
                    type="file"
                    style="display: none"
                    ref="studentfile"
                    @change="studentFile"
                    id="studentInput"
                  />

                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn class="open-dialog-button" round dark block @click="pickStudentFile">

                    <v-icon small class="pr-1">refresh</v-icon>Upload
                  </v-btn>
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">

                  <v-btn

                    class="add-button"
                    round

                    dark
                    block
                    @click="importStudent()"
                    :loading="studentLoading"
                  >import</v-btn>

                </v-flex>
                <v-flex xs12 sm4 lg2 class="mt-1">
                  <download-csv :data="studentData">

                    <v-btn class="blue lighten-2" round dark block>

                      <v-icon small class="pr-1">archive</v-icon>sample download
                    </v-btn>
                  </download-csv>
                </v-flex>
              </v-layout>
            </v-flex>
          </v-layout>

          <!-- <v-layout>

            <v-flex xs12>
              <v-layout wrap>
                <v-flex xs9 sm5 lg2 class="pt-4">
                  <label class="title right">Students & Parents:</label>
                </v-flex>
                <v-flex xs12 sm6 lg3>
                  <v-text-field placeholder="Choose file" :disabled="true"></v-text-field>
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">
                  <v-btn class="grey" dark block>
                    <v-icon small class="pr-1">refresh</v-icon>Upload
                  </v-btn>
                </v-flex>
                <v-flex xs6 sm4 lg2 class="mt-1">
                  <v-btn class="grey" dark block>import</v-btn>
                </v-flex>
                <v-flex xs12 sm4 lg2 class="mt-1">
                  <v-btn class="blue lighten-2" dark block>
                    <v-icon small class="pr-1">archive</v-icon>sample download
                  </v-btn>
                </v-flex>
              </v-layout>
            </v-flex>

          </v-layout>-->

        </v-container>
      </v-card>

      <v-snackbar
        :timeout="timeout"
        :top="y === 'top'"
        :right="x === 'right'"
        :vertical="mode === 'vertical'"
        v-model="snackbar"

        :color="color"

      >{{ text }}</v-snackbar>

    </v-container>
  </template>
  
  
  <script>
  import http from "@/Services/http.js";
  import moment from "moment";
  import teacherData from "@/script/teachers.js";
  import studentData from "@/script/students.js";
  import parentData from "@/script/parents.js";
  import userData from "@/script/users.js";
  import bookData from "@/script/books.js";

  import XLSX from "xlsx";

  
  export default {
    data: () => ({

      loading: false,

      parentLoading: false,
      userLoading: false,
      BookLoading: false,
      studentLoading: false,

      snackbar: false,
      y: "top",
      x: "right",
      mode: "",
      timeout: 3000,
      text: "",
      color: "",

      teacherData: [],
      studentData: [],
      parentData: [],
      userData: [],
      bookData: [],

      teacherFileJson: [],
      parentFileJson: [],
      userFileJson: [],
      bookFileJson: [],

      studentFileJson: [],

      teacherFileName: "",

      parentFileName: "",

      userFileName: "",
      bookFileName: "",

      bookStudentName: "",

      token: "",
      fileData: {},
      teacherDetail: {},
      userDetail: {},

    }),
    methods: {
      pickFile() {
        this.$refs.file.click();
      },

      pickParentFile() {
        this.$refs.parentfile.click();
      },
      pickUserFile() {
        this.$refs.userfile.click();
      },
      pickBookFile() {
        this.$refs.bookfile.click();
      },

      pickStudentFile() {
        this.$refs.studentfile.click();
      },

      convertFile(e) {

        var form_data = new FormData();
        form_data.append("upload", e.target.files[0]);
        
        this.teacherDetail = form_data;

        const input = document.getElementById("fileInput");

        this.teacherFileName = input.files[0].name;

        // const reader = new FileReader();
        // console.log("reader", reader);
        // reader.onload = () => {
        //   let text = reader.result;
        //   //convert text to json here
        //   console.log("text", text);
        //   var json = this.csvJSON(text);
        // };
        // reader.readAsText(input.files[0]);

        // var files = e.target.files,
        //   f = files[0];
        // var reader = new FileReader();
        // let array = [];
        // let _this = this;
        // reader.onload = function(e) {
        //   var data = new Uint8Array(e.target.result);
        //   var workbook = XLSX.read(data, { type: "array" });
        //   let sheetName = workbook.SheetNames[0];
        //   // /* DO SOMETHING WITH workbook HERE */
        //   let worksheet = workbook.Sheets[sheetName];
        //   array = XLSX.utils.sheet_to_json(worksheet);
        //   _this.teacherFileJson = array;
        // };
        // reader.readAsArrayBuffer(f);

      },

      parentFile(e) {

        const input = document.getElementById("parentInput");

        this.parentFileName = input.files[0].name;

        console.log("this.parentFileName", this.parentFileName);
        var files = e.target.files,
          f = files[0];
        var reader = new FileReader();
        let array = [];
        let _this = this;
        reader.onload = function(e) {
          var data = new Uint8Array(e.target.result);
          var workbook = XLSX.read(data, { type: "array" });
          let sheetName = workbook.SheetNames[0];
          // /* DO SOMETHING WITH workbook HERE */
          let worksheet = workbook.Sheets[sheetName];
          array = XLSX.utils.sheet_to_json(worksheet);
          _this.parentFileJson = array;
        };
        reader.readAsArrayBuffer(f);

      },

      userFile(e) {

        var form_data = new FormData();
        form_data.append("upload", e.target.files[0]);
        
        this.userDetail = form_data;

        const input = document.getElementById("userInput");

        this.userFileName = input.files[0].name;

  
  
        // var files = e.target.files,
        //   f = files[0];
        // var reader = new FileReader();
        // let array = [];
        // let _this = this;
        // reader.onload = function(e) {
        //   var data = new Uint8Array(e.target.result);
        //   var workbook = XLSX.read(data, { type: "array" });
        //   let sheetName = workbook.SheetNames[0];
        //   // /* DO SOMETHING WITH workbook HERE */
        //   let worksheet = workbook.Sheets[sheetName];
        //   array = XLSX.utils.sheet_to_json(worksheet);
        //   _this.userFileJson = array;
        // };
        // reader.readAsArrayBuffer(f);

      },

      bookFile(e) {

        const input = document.getElementById("bookInput");

        this.bookFileName = input.files[0].name;

        console.log("this.bookFileName", this.bookFileName);
        var files = e.target.files,
          f = files[0];
        console.log("this.bookFileName", files);
        var reader = new FileReader();
        console.log("reader================", reader);
        let array = [];
        let _this = this;
        reader.onload = function(e) {
          console.log("data", e.target.result);
          var data = new Uint8Array(e.target.result);
          console.log("data", data);
          var workbook = XLSX.read(data, { type: "array" });
          let sheetName = workbook.SheetNames[0];
          // /* DO SOMETHING WITH workbook HERE */
          let worksheet = workbook.Sheets[sheetName];
          array = XLSX.utils.sheet_to_json(worksheet);
          _this.bookFileJson = array;
          console.log("this.bookFileJson ", _this.bookFileJson);
        };
        reader.readAsArrayBuffer(f);

      },

      // csvJSON(csv) {
      //   var lines = csv.split("
  ");
  
      //   var result = [];
  
      //   var headers = lines[0].split(",");
  
      //   for (var i = 1; i < lines.length; i++) {
      //     var obj = {};
      //     var currentline = lines[i].split(",");
  
      //     for (var j = 0; j < headers.length; j++) {
      //       obj[headers[j]] = currentline[j];
      //     }
  
      //     result.push(obj);
      //   }
  
      //   //return result; //JavaScript object
      //   return JSON.stringify(result); //JSON
      // },

      studentFile(e) {

        var form_data = new FormData();
        form_data.append("upload", e.target.files[0]);
        
        this.fileData = form_data;

        const input = document.getElementById("studentInput");

        this.bookStudentName = input.files[0].name;

  
        // var files = e.target.files,
        //   f = files[0];
        // var reader = new FileReader();
        // let array = [];
        // let _this = this;
        // reader.onload = function(e) {
        //   var data = new Uint8Array(e.target.result);
        //   var workbook = XLSX.read(data, { type: "array", cellDates: true });
        //   let sheetName = workbook.SheetNames[0];
        //   // /* DO SOMETHING WITH workbook HERE */
        //   let worksheet = workbook.Sheets[sheetName];
        //   array = XLSX.utils.sheet_to_json(worksheet);
        //   _this.studentFileJson = array;
        // };
        // reader.readAsArrayBuffer(f);

      },

      // csvJSON(csv) {
      //   var lines = csv.split("
  ");

      //   var result = [];
      //   var headers = lines[0].split(",");

      //   for (var i = 1; i < lines.length; i++) {
      //     var obj = {};
      //     var currentline = lines[i].split(",");

      //     for (var j = 0; j < headers.length; j++) {
      //       obj[headers[j]] = currentline[j];
      //     }
      //     this.teacherFileJson.push(obj);
      //   }
      // },

      importTeacher() {
        this.loading = true;
        var teacherfile = {};
        teacherfile.teacherData = this.teacherFileJson;
        http()

          .post("/importTeacherData", this.teacherDetail, {

            headers: { Authorization: "Bearer " + this.token }
          })
          .then(response => {
            this.snackbar = true;
            this.text = response.data.message;

            this.color = "green";

            this.loading = false;
          })
          .catch(error => {
            this.snackbar = true;
            this.text = error.response.data.message;

            this.color = "red";

            this.loading = false;
          });
      },
      importParent() {

        this.parentLoading = true;

        var parentfile = {};
        parentfile.parentData = this.parentFileJson;
        http()
          .post("/importParentData", parentfile, {
            headers: { Authorization: "Bearer " + this.token }
          })
          .then(response => {
            this.snackbar = true;
            this.text = response.data.message;

            this.color = "green";

            this.parentLoading = false;

          })
          .catch(error => {
            this.snackbar = true;
            this.text = error.response.data.message;

            this.parentLoading = false;

            this.color = "red";

          });
      },
      importUser() {

        this.userLoading = true;

        var userfile = {};
        userfile.userData = this.userFileJson;
        http()

          .post("/importUserData", this.userDetail, {

            headers: { Authorization: "Bearer " + this.token }
          })
          .then(response => {
            this.snackbar = true;
            this.text = response.data.message;

            this.color = "green";

            this.userLoading = false;

          })
          .catch(error => {
            this.snackbar = true;
            this.text = error.response.data.message;

            this.userLoading = false;

            this.color = "red";

          });
      },
      importBook() {

        this.BookLoading = true;

        var bookfile = {};
        bookfile.bookData = this.bookFileJson;
        http()
          .post("/importBookData", bookfile, {
            headers: { Authorization: "Bearer " + this.token }
          })
          .then(response => {
            this.snackbar = true;
            this.text = response.data.message;

            this.color = "green";

            this.BookLoading = false;

          })
          .catch(error => {
            this.snackbar = true;
            this.text = error.response.data.message;
            this.color = "red";

            this.BookLoading = false;

          });
      },
      importStudent() {

        this.studentLoading = true;

        var studentfile = {};

        console.log("this.studentFileJson", this.studentFileJson);

        studentfile.studentData = this.studentFileJson;
        http()

          .post("/importStudentData", this.fileData, {

            headers: { Authorization: "Bearer " + this.token }
          })
          .then(response => {
            this.snackbar = true;
            this.text = response.data.message;
            this.color = "green";

            this.studentLoading = false;

          })
          .catch(error => {
            this.snackbar = true;
            this.text = error.response.data.message;

            this.color = "red";

            this.studentLoading = false;

          });

      }
    },
    mounted() {

      this.token = this.$store.state.token;

      /** TEACHERS SAMPLE CSV */
      const getTeacherData = teacherData();
      this.teacherData = getTeacherData;
  
      /** STUDENTS SAMPLE CSV */
      const getstudentData = studentData();
      this.studentData = getstudentData;
  
      /** PARENTS SAMPLE CSV */
      const getparentData = parentData();
      this.parentData = getparentData;
  
      /** USERS SAMPLE CSV */
      const getUserData = userData();
      this.userData = getUserData;
  
      /** BOOKS SAMPLE CSV */
      const getBookData = bookData();
      this.bookData = getBookData;
    }
  };

  </script>

  <style>
  .card-styles {
    background: #7f62f8 !important;
    border-color: #7f62f8 !important;
  }
  </style>