public/javascripts/components/problems.js

   1 Vue.component('my-problems', {
   2     data: function () {
   3         return {
   4             problems: problemArray //initial value
   5         };
   6     },
   7     template: `
   8         <div>
   9             <button @click="fetchProblems('backward')">Previous</button>
  10             <button @click="fetchProblems('forward')">Next</button>
  11             <button @click="showNewproblemModal">New</button>
  12             <my-problem-summary v-on:show-problem="bubbleUp(p)"
  13                 v-for="(p,idx) in sortedProblems" v-bind:prob="p" v-bind:key="idx">
  14             </my-problem-summary>
  15             <input type="checkbox" id="modal-newproblem" class="modal">
  16             <div role="dialog" aria-labelledby="newProblemTxt">
  17                 <div class="card newproblem">
  18                     <label for="modal-newproblem" class="modal-close"></label>
  19                     <h3 id="newProblemTxt">Add problem</h3>
  20                     <form @submit.prevent="postNewProblem">
  21                         <fieldset>
  22                             <label for="newpbFen">Fen</label>
  23                             <input type="text" id="newpbFen"
  24                                 placeholder="Position [+ flags [+ turn]]"/>
  25                         </fieldset>
  26                         <fieldset>
  27                             <p class="emphasis">
  28                                 Allowed HTML tags:
  29                                 &lt;p&gt;,&lt;br&gt;,&lt,ul&gt;,&lt;ol&gt;,&lt;li&gt;
  30                             </p>
  31                             <label for="newpbInstructions">Instructions</label>
  32                             <textarea id="newpbInstructions" placeholder="Explain the problem here"/>
  33                             <label for="newpbSolution">Solution</label>
  34                             <textarea id="newpbSolution" placeholder="How to solve the problem?"/>
  35                             <button class="center-btn">Send</button>
  36                         </fieldset>
  37                         <p class="mistake-newproblem">
  38                             Note: if you made a mistake, please let me know at
  39                             <a :href="mailErrProblem">contact@vchess.club</a>
  40                         </p>
  41                     </form>
  42                 </div>
  43             </div>
  44         </div>
  45     `,
  46     computed: {
  47         sortedProblems: function() {
  48             // Newest problem first
  49             return this.problems.sort((p1,p2) => { return p2.added - p1.added; });
  50         },
  51         mailErrProblem: function() {
  52             return "mailto:contact@vchess.club?subject=[" + variant + " problems] error";
  53         },
  54     },
  55     methods: {
  56         // Propagate "show problem" event to parent component (my-variant)
  57         bubbleUp: function(problem) {
  58             this.$emit('show-problem', JSON.stringify(problem));
  59         },
  60         fetchProblems: function(direction) {
  61             return; //TODO: re-activate after server side is implemented (see routes/all.js)
  62             if (this.problems.length == 0)
  63                 return; //what could we do?!
  64             // Search for newest date (or oldest)
  65             let last_dt = this.problems[0].added;
  66             for (let i=0; i<this.problems.length; i++)
  67             {
  68                 if ((direction == "forward" && this.problems[i].added > last_dt) ||
  69                     (direction == "backward" && this.problems[i].added < last_dt))
  70                 {
  71                     last_dt = this.problems[i].added;
  72                 }
  73             }
  74             ajax("/problems/" + variant, "GET", {
  75                 direction: direction,
  76                 last_dt: last_dt,
  77             }, response => {
  78                 if (response.problems.length > 0)
  79                     this.problems = response.problems;
  80             });
  81         },
  82         showNewproblemModal: function() {
  83             document.getElementById("modal-newproblem").checked = true;
  84         },
  85         postNewProblem: function() {
  86             const fen = document.getElementById("newpbFen").value;
  87             if (!V.IsGoodFen(fen))
  88                 return alert("Bad FEN string");
  89             const instructions = document.getElementById("newpbInstructions").value;
  90             const solution = document.getElementById("newpbSolution").value;
  91             ajax("/problems/" + variant, "POST", {
  92                 fen: fen,
  93                 instructions: instructions,
  94                 solution: solution,
  95             }, response => {
  96                 document.getElementById("modal-newproblem").checked = false;
  97             });
  98         },
  99     },
 100 })