public/javascripts/components/problems.js

   1 Vue.component('my-problems', {
   2     data: function () {
   3         return {
   4             problems: problemArray, //initial value
   5             newProblem: {
   6                 fen: "",
   7                 instructions: "",
   8                 solution: "",
   9                 stage: "nothing", //or "preview" after new problem is filled
  10             },
  11         };
  12     },
  13     template: `
  14         <div class="col-sm-12 col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
  15             <div id="problemControls" class="button-group">
  16                 <button :aria-label='translate("Load previous problems")' class="tooltip"
  17                         @click="fetchProblems('backward')">
  18                     <i class="material-icons">skip_previous</i>
  19                 </button>
  20                 <button :aria-label='translate("Add a problem")' class="tooltip"
  21                         @click="showNewproblemModal">
  22                     {{ translate("New") }}
  23                 </button>
  24                 <button :aria-label='translate("Load next problems")' class="tooltip"
  25                         @click="fetchProblems('forward')">
  26                     <i class="material-icons">skip_next</i>
  27                 </button>
  28             </div>
  29             <my-problem-summary v-on:show-problem="bubbleUp(p)"
  30                 v-for="(p,idx) in sortedProblems"
  31                 v-bind:prob="p" v-bind:preview="false" v-bind:key="idx">
  32             </my-problem-summary>
  33             <input type="checkbox" id="modal-newproblem" class="modal">
  34             <div role="dialog" aria-labelledby="newProblemTxt">
  35                 <div v-show="newProblem.stage=='nothing'" class="card newproblem-form">
  36                     <label for="modal-newproblem" class="modal-close"></label>
  37                     <h3 id="newProblemTxt">{{ translate("Add a problem") }}</h3>
  38                     <form @submit.prevent="previewNewProblem">
  39                         <fieldset>
  40                             <label for="newpbFen">FEN</label>
  41                             <input id="newpbFen" type="text" v-model="newProblem.fen"
  42                                 :placeholder='translate("Full FEN description")'/>
  43                         </fieldset>
  44                         <fieldset>
  45                             <p class="emphasis">{{ translate("Safe HTML tags allowed") }}</p>
  46                             <label for="newpbInstructions">{{ translate("Instructions") }}</label>
  47                             <textarea id="newpbInstructions" v-model="newProblem.instructions"
  48                                 :placeholder='translate("Describe the problem goal")'></textarea>
  49                             <label for="newpbSolution">{{ translate("Solution") }}</label>
  50                             <textarea id="newpbSolution" v-model="newProblem.solution"
  51                                 :placeholder='translate("How to solve the problem?")'></textarea>
  52                             <button class="center-btn">{{ translate("Preview") }}</button>
  53                         </fieldset>
  54                     </form>
  55                 </div>
  56                 <div v-show="newProblem.stage=='preview'" class="card newproblem-preview">
  57                     <label for="modal-newproblem" class="modal-close"></label>
  58                     <my-problem-summary v-bind:prob="newProblem" v-bind:preview="true">
  59                     </my-problem-summary>
  60                     <div class="button-group">
  61                         <button @click="newProblem.stage='nothing'">{{ translate("Cancel") }}</button>
  62                         <button @click="sendNewProblem()">{{ translate("Send") }}</button>
  63                     </div>
  64                 </div>
  65             </div>
  66         </div>
  67     `,
  68     computed: {
  69         sortedProblems: function() {
  70             // Newest problem first
  71             return this.problems.sort((p1,p2) => { return p2.added - p1.added; });
  72         },
  73     },
  74     methods: {
  75         translate: function(text) {
  76             return translations[text];
  77         },
  78         // Propagate "show problem" event to parent component (my-variant)
  79         bubbleUp: function(problem) {
  80             this.$emit('show-problem', JSON.stringify(problem));
  81         },
  82         fetchProblems: function(direction) {
  83             if (this.problems.length == 0)
  84                 return; //what could we do?!
  85             // Search for newest date (or oldest)
  86             let last_dt = this.problems[0].added;
  87             for (let i=0; i<this.problems.length; i++)
  88             {
  89                 if ((direction == "forward" && this.problems[i].added > last_dt) ||
  90                     (direction == "backward" && this.problems[i].added < last_dt))
  91                 {
  92                     last_dt = this.problems[i].added;
  93                 }
  94             }
  95             ajax("/problems/" + variant, "GET", {
  96                 direction: direction,
  97                 last_dt: last_dt,
  98             }, response => {
  99                 if (response.problems.length > 0)
 100                     this.problems = response.problems;
 101             });
 102         },
 103         showNewproblemModal: function() {
 104             document.getElementById("modal-newproblem").checked = true;
 105         },
 106         previewNewProblem: function() {
 107             if (!V.IsGoodFen(this.newProblem.fen))
 108                 return alert(translations["Bad FEN description"]);
 109             if (this.newProblem.instructions.trim().length == 0)
 110                 return alert(translations["Empty instructions"]);
 111             if (this.newProblem.solution.trim().length == 0)
 112                 return alert(translations["Empty solution"]);
 113             this.newProblem.stage = "preview";
 114         },
 115         sendNewProblem: function() {
 116             // Send it to the server and close modal
 117             ajax("/problems/" + variant, "POST", {
 118                 fen: this.newProblem.fen,
 119                 instructions: this.newProblem.instructions,
 120                 solution: this.newProblem.solution,
 121             }, response => {
 122                 this.newProblem.added = Date.now();
 123                 this.problems.push(JSON.parse(JSON.stringify(this.newProblem)));
 124                 document.getElementById("modal-newproblem").checked = false;
 125                 this.newProblem.stage = "nothing";
 126             });
 127         },
 128     },
 129 })