import { createApp } from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js';
const Evaluation = {
    props: {
      defaultActive: {
        type: Number,
        required: true
      },
      totalItems: {
        type: Number,
        required: true
      },
      avgVal:{
        type:Number,
        required:true
      }
    },
    data() {
      return {
        defaultActived: null,
        items: []
      };
    },
    created() {
      // HTMLから渡された値を基に、初期の状態を設定
      this.items = Array.from({ length: this.totalItems }, (v, i) =>{
        return (i + 1) <= this.defaultActive ? '★' : '☆';
      }
      );
    },
    methods: {
      // マウスが触れた時に☆を★に変える
      hover(index) {
        this.items = Array.from({ length: this.totalItems }, (v, i) =>
            i <= index ? '★' : '☆'
        );
        document.getElementById('evaluationVal').setAttribute('data-val',index);
      },
      // マウスが離れた時に元の値に戻す
      onclick() {       
        let i = Math.floor(document.getElementById('evaluationVal').getAttribute('data-val')) + 1;
         (async (i) =>{
            let frm = new FormData();
            frm.append('id',document.querySelector('#evaluation_id').getAttribute('data-id'));
            frm.append('val',i);
            let res = await fetch('/evaluation/index.php',{
                method:'post',
                body:frm
            }).then(result=>result.json());
            alert(res.msg);
            if(Math.floor(res.flg) === 1){
              const roundToDecimal = (number, decimalPlaces) =>{
                const multiplier = Math.pow(10, decimalPlaces);
                return Math.round(number * multiplier) / multiplier;
              } 
              document.getElementById('evaluationAvgVal').textContent = roundToDecimal(res.avgVal,2);
              this.defaultActived = res.avgVal;
              this.reRender();
            }
            
        })(i);
      }, 
      reRender() {
        // HTMLから渡された値を基に、初期の状態を設定
        this.items = Array.from({ length: this.totalItems }, (v, i) =>{
            return (i + 1) <= this.defaultActived ? '★' : '☆';
          }
        );
      }    
    },
    template: `
      <div>
        <span v-for="(item, index) in items" :key="index">
          <span
            @mouseover="hover(index)"
          >
            {{ item }}
          </span>
        </span>
        [<span  id='evaluationAvgVal'>{{this.avgVal}}</span>]
        <button @click="onclick()"
         id='evaluationVal'
         data-val='5'
         class='bbtn'
         title="★に触れることで評価の変更が出来ます．"
         >評価する</button>
      </div>
    `
  };
  const app = createApp({});
  app.component('evaluation', Evaluation);
  app.mount('#evaluation');