const app = getApp();

Component({
  properties: {
    data:{
      type:Object,
      observer: function(data){
        //console.log(data);
        if(data.question_choices){
        this.user_answers={};
        for(var choice of data.question_choices)
          this.user_answers[choice.choice_id] = choice.user_answer_boolean;
      }
      //console.log(this.user_answers);
      }
    },
    exercise_status:Number,
    user_exercise_status: Number,
    is_md:Boolean
  },
  attached(){
    console.log(this.data);
  },
  data: {

  },
  methods: {
    triggerAnswer({answered=1}={}){
      console.info("trigger answer");
      if(this.answered!=answered){
        let {question_id, q_position} = this.data.data;
        this.triggerEvent("answer", { q_position, question_id, answered}, { bubbles: true});
        console.log("triggered");
        this.answered = answered;
      }
    },
    answer_choice_question: function (e) {
      console.log(e, this.data);
      let { detail: { value }, currentTarget: { dataset } }=e
      console.log("answer_question");
      console.log(value);
      console.log(dataset);
      let exercise_choice_id;
      if (Array.isArray(value)) {
        exercise_choice_id = [];
        for (var i of value) {
          exercise_choice_id.push(parseInt(i));
        }
        console.log(exercise_choice_id);
      } else {
        exercise_choice_id = parseInt(value);
        console.log(exercise_choice_id);
      }
      app.api("exercise_questions.exercise_answers")({ question_id: dataset.question_id, exercise_choice_id })
        .then(res => {
          var answered = 0;
          if (Array.isArray(exercise_choice_id)) {
            answered = exercise_choice_id.length>0?1:0;
          } else if (exercise_choice_id) {
            answered = 1;
          }
          console.log(answered);
          this.triggerAnswer({answered});
          console.log("answer_question"); console.log(res); 
          if (!Array.isArray(exercise_choice_id))
            exercise_choice_id = [exercise_choice_id];
          for(var choice of this.data.data.question_choices){
            if(exercise_choice_id.indexOf(choice.choice_id)==-1)
              this.user_answers[choice.choice_id]=false;
            else
              this.user_answers[choice.choice_id]=true;
          }
          console.log(this.user_answers);
        })
        .catch(e => {
          //console.error(e);
          let {question_choices} = this.data.data;
          question_choices = question_choices.map(i=>{
            i.user_answer_boolean = this.user_answers[i.choice_id]
            //console.log(this.user_answers[i.choice_id]);
            return i;
          })
          this.setData({"data.question_choices":question_choices})
          console.log(e);
          app.showError(e)
        });
    },
  }
})