client/src/views/Problems.vue

   1 <template lang="pug">
   2 main
   3   input#modalNewprob.modal(
   4     type="checkbox"
   5     @change="fenFocusIfOpened($event)"
   6   )
   7   div#newprobDiv(
   8     role="dialog"
   9     data-checkbox="modalNewprob"
  10   )
  11     .card
  12       label#closeNewprob.modal-close(for="modalNewprob")
  13       fieldset
  14         label(for="selectVariant") {{ st.tr["Variant"] }}
  15         select#selectVariant(
  16           v-model="curproblem.vid"
  17           @change="changeVariant(curproblem)"
  18         )
  19           option(
  20             v-for="v in [emptyVar].concat(st.variants)"
  21             :value="v.id"
  22             :selected="curproblem.vid==v.id"
  23           )
  24             | {{ v.name }}
  25       fieldset
  26         input#inputFen(
  27           type="text"
  28           placeholder="FEN"
  29           v-model="curproblem.fen"
  30           @input="trySetDiagram(curproblem)"
  31         )
  32         #diagram(v-html="curproblem.diag")
  33       fieldset
  34         textarea(
  35           :placeholder="st.tr['Instructions']"
  36           v-model="curproblem.instruction"
  37         )
  38         p(v-html="parseHtml(curproblem.instruction)")
  39       fieldset
  40         textarea(
  41           :placeholder="st.tr['Solution']"
  42           v-model="curproblem.solution"
  43         )
  44         p(v-html="parseHtml(curproblem.solution)")
  45       button(@click="sendProblem()") {{ st.tr["Send"] }}
  46       #dialog.text-center {{ st.tr[infoMsg] }}
  47   .row(v-if="showOne")
  48     .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
  49       #topPage
  50         .button-group(v-if="st.user.id == curproblem.uid")
  51           button(@click="editProblem(curproblem)") {{ st.tr["Edit"] }}
  52           button(@click="deleteProblem(curproblem)") {{ st.tr["Delete"] }}
  53         span.vname {{ curproblem.vname }}
  54         span.uname ({{ curproblem.uname }})
  55         button.marginleft(@click="backToList()") {{ st.tr["Back to list"] }}
  56         button.nomargin(@click="gotoPrevNext($event,curproblem,1)")
  57           | {{ st.tr["Previous_p"] }}
  58         button.nomargin(@click="gotoPrevNext($event,curproblem,-1)")
  59           | {{ st.tr["Next_p"] }}
  60       p.oneInstructions.clickable(
  61         v-html="parseHtml(curproblem.instruction)"
  62         @click="curproblem.showSolution=!curproblem.showSolution"
  63       )
  64         | {{ st.tr["Show solution"] }}
  65       p(
  66         v-show="curproblem.showSolution"
  67         v-html="parseHtml(curproblem.solution)"
  68       )
  69   .row(v-else)
  70     .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
  71       #controls
  72         button#newProblem(@click="prepareNewProblem()")
  73           | {{ st.tr["New problem"] }}
  74         div#myProblems(v-if="st.user.id > 0")
  75           label(for="checkboxMine") {{ st.tr["My problems"] }}
  76           input#checkboxMine(
  77             type="checkbox"
  78             v-model="onlyMine"
  79           )
  80         label(for="selectVariant") {{ st.tr["Variant"] }}
  81         select#selectVariant(v-model="selectedVar")
  82           option(
  83             v-for="v in [emptyVar].concat(st.variants)"
  84             :value="v.id"
  85           )
  86             | {{ v.name }}
  87       table#tProblems
  88         tr
  89           th {{ st.tr["Variant"] }}
  90           th {{ st.tr["Instructions"] }}
  91           th {{ st.tr["Number"] }}
  92         tr(
  93           v-for="p in problems[onlyMine ? 'mine' : 'others']"
  94           v-show="onlyMine || !selectedVar || p.vid == selectedVar"
  95           @click="setHrefPid(p)"
  96         )
  97           td {{ p.vname }}
  98           td {{ firstChars(p.instruction) }}
  99           td {{ p.id }}
 100       button#loadMoreBtn(
 101         v-if="hasMore[onlyMine ? 'mine' : 'others']"
 102         @click="loadMore(onlyMine ? 'mine' : 'others')"
 103       )
 104         | {{ st.tr["Load more"] }}
 105   BaseGame(
 106     ref="basegame"
 107     v-if="showOne"
 108     :game="game"
 109   )
 110 </template>
 111
 112 <script>
 113 import { store } from "@/store";
 114 import { ajax } from "@/utils/ajax";
 115 import { checkProblem } from "@/data/problemCheck";
 116 import { getDiagram } from "@/utils/printDiagram";
 117 import { processModalClick } from "@/utils/modalClick";
 118 import { ArrayFun } from "@/utils/array";
 119 import BaseGame from "@/components/BaseGame.vue";
 120 export default {
 121   name: "my-problems",
 122   components: {
 123     BaseGame
 124   },
 125   data: function() {
 126     return {
 127       st: store.state,
 128       emptyVar: {
 129         vid: 0,
 130         vname: ""
 131       },
 132       // Problem currently showed, or edited:
 133       curproblem: {
 134         id: 0, //used in case of edit
 135         vid: 0,
 136         fen: "",
 137         diag: "",
 138         instruction: "",
 139         solution: "",
 140         showSolution: false
 141       },
 142       loadedVar: 0, //corresponding to loaded V
 143       selectedVar: 0, //to filter problems based on variant
 144       problems: { "mine": [], "others": [] },
 145       // timestamp of oldest showed problem:
 146       cursor: {
 147         mine: Number.MAX_SAFE_INTEGER,
 148         others: Number.MAX_SAFE_INTEGER
 149       },
 150       // hasMore == TRUE: a priori there could be more problems to load
 151       hasMore: { mine: true, others: true },
 152       onlyMine: false,
 153       showOne: false,
 154       infoMsg: "",
 155       game: {
 156         players: [{ name: "Problem" }, { name: "Problem" }],
 157         mode: "analyze"
 158       }
 159     };
 160   },
 161   created: function() {
 162     const pid = this.$route.query["id"];
 163     if (!!pid) this.showProblem(pid);
 164     else this.loadMore("others", () => { this.loadMore("mine"); });
 165   },
 166   mounted: function() {
 167     document.getElementById("newprobDiv")
 168       .addEventListener("click", processModalClick);
 169   },
 170   watch: {
 171     // st.variants changes only once, at loading from [] to [...]
 172     "st.variants": function() {
 173       // Set problems vname (either all are set or none)
 174       let problems = this.problems["others"].concat(this.problems["mine"]);
 175       if (problems.length > 0 && problems[0].vname == "")
 176         problems.forEach(p => this.setVname(p));
 177     },
 178     $route: function(to) {
 179       const pid = to.query["id"];
 180       if (!!pid) this.showProblem(pid);
 181       else {
 182         if (this.cursor["others"] == Number.MAX_SAFE_INTEGER)
 183           // Back from a single problem view at initial loading:
 184           // problems lists are empty!
 185           this.loadMore("others", () => { this.loadMore("mine"); });
 186         this.showOne = false;
 187       }
 188     }
 189   },
 190   methods: {
 191     fenFocusIfOpened: function(event) {
 192       if (event.target.checked) {
 193         this.infoMsg = "";
 194         document.getElementById("inputFen").focus();
 195       }
 196     },
 197     setVname: function(prob) {
 198       prob.vname = this.st.variants.find(v => v.id == prob.vid).name;
 199     },
 200     // Add vname and user names:
 201     decorate: function(problems, callback) {
 202       if (this.st.variants.length > 0)
 203         problems.forEach(p => this.setVname(p));
 204       // Retrieve all problems' authors' names
 205       let names = {};
 206       problems.forEach(p => {
 207         if (p.uid != this.st.user.id) names[p.uid] = "";
 208         else p.uname = this.st.user.name;
 209       });
 210       if (Object.keys(names).length > 0) {
 211         ajax(
 212           "/users",
 213           "GET",
 214           {
 215             data: { ids: Object.keys(names).join(",") },
 216             success: (res2) => {
 217               res2.users.forEach(u => {
 218                 names[u.id] = u.name;
 219               });
 220               problems.forEach(p => {
 221                 if (!p.uname)
 222                   p.uname = names[p.uid];
 223               });
 224               if (!!callback) callback();
 225             }
 226           }
 227         );
 228       } else if (!!callback) callback();
 229     },
 230     firstChars: function(text) {
 231       let preparedText = text
 232         // Replace line jumps and <br> by spaces
 233         .replace(/\n/g, " ")
 234         .replace(/<br\/?>/g, " ")
 235         .replace(/<[^>]+>/g, "") //remove remaining HTML tags
 236         .replace(/[ ]+/g, " ") //remove series of spaces by only one
 237         .trim();
 238       const maxLength = 32; //arbitrary...
 239       if (preparedText.length > maxLength)
 240         return preparedText.substr(0, 32) + "...";
 241       return preparedText;
 242     },
 243     copyProblem: function(p1, p2) {
 244       for (let key in p1) p2[key] = p1[key];
 245     },
 246     setHrefPid: function(p) {
 247       // Change href => $route changes, watcher notices, call showProblem
 248       const curHref = document.location.href;
 249       document.location.href = curHref.split("?")[0] + "?id=" + p.id;
 250     },
 251     backToList: function() {
 252       // Change href => $route change, watcher notices, reset showOne to false
 253       document.location.href = document.location.href.split("?")[0];
 254     },
 255     resetCurProb: function() {
 256       this.curproblem.id = 0;
 257       this.curproblem.uid = 0;
 258       this.curproblem.vid = "";
 259       this.curproblem.vname = "";
 260       this.curproblem.fen = "";
 261       this.curproblem.diag = "";
 262       this.curproblem.instruction = "";
 263       this.curproblem.solution = "";
 264       this.curproblem.showSolution = false;
 265     },
 266     parseHtml: function(txt) {
 267       return !txt.match(/<[/a-zA-Z]+>/)
 268         ? txt.replace(/\n/g, "<br/>") //no HTML tag
 269         : txt;
 270     },
 271     changeVariant: function(prob) {
 272       this.setVname(prob);
 273       this.loadVariant(prob.vid, () => {
 274         // Set FEN if possible (might not be correct yet)
 275         if (V.IsGoodFen(prob.fen)) this.setDiagram(prob);
 276         else prob.diag = "";
 277       });
 278     },
 279     loadVariant: async function(vid, cb) {
 280       // Condition: vid is a valid variant ID
 281       this.loadedVar = 0;
 282       const variant = this.st.variants.find(v => v.id == vid);
 283       await import("@/variants/" + variant.name + ".js")
 284       .then((vModule) => {
 285         window.V = vModule[variant.name + "Rules"];
 286         this.loadedVar = vid;
 287         cb();
 288       });
 289     },
 290     trySetDiagram: function(prob) {
 291       // Problem edit: FEN could be wrong or incomplete,
 292       // variant could not be ready, or not defined
 293       if (prob.vid > 0 && this.loadedVar == prob.vid && V.IsGoodFen(prob.fen))
 294         this.setDiagram(prob);
 295       else prob.diag = "";
 296     },
 297     setDiagram: function(prob) {
 298       // Condition: prob.fen is correct and global V is ready
 299       const parsedFen = V.ParseFen(prob.fen);
 300       const args = {
 301         position: parsedFen.position,
 302         orientation: parsedFen.turn
 303       };
 304       prob.diag = getDiagram(args);
 305     },
 306     showProblem: function(p_id) {
 307       const processWhenWeHaveProb = () => {
 308         this.loadVariant(p.vid, () => {
 309           this.onlyMine = (p.uid == this.st.user.id);
 310           // The FEN is already checked at this stage:
 311           this.game.vname = p.vname;
 312           this.game.mycolor = V.ParseFen(p.fen).turn; //diagram orientation
 313           this.game.fenStart = p.fen;
 314           this.game.fen = p.fen;
 315           this.showOne = true;
 316           // $nextTick to be sure $refs["basegame"] exists
 317           this.$nextTick(() => {
 318             this.$refs["basegame"].re_setVariables(this.game); });
 319           this.copyProblem(p, this.curproblem);
 320         });
 321       };
 322       let p = undefined;
 323       if (typeof p_id == "object") p = p_id;
 324       else {
 325         const problems = this.problems["others"].concat(this.problems["mine"]);
 326         p = problems.find(prob => prob.id == p_id);
 327       }
 328       if (!p) {
 329         // Bad luck: problem not in list. Get from server
 330         ajax(
 331           "/problems",
 332           "GET",
 333           {
 334             data: { id: p_id },
 335             success: (res) => {
 336               this.decorate([res.problem], () => {
 337                 p = res.problem;
 338                 const mode = (p.uid == this.st.user.id ? "mine" : "others");
 339                 this.problems[mode].push(p);
 340                 processWhenWeHaveProb();
 341               });
 342             }
 343           }
 344         );
 345       } else processWhenWeHaveProb();
 346     },
 347     gotoPrevNext: function(e, prob, dir) {
 348       const mode = (this.onlyMine ? "mine" : "others");
 349       const problems = this.problems[mode];
 350       const startIdx = problems.findIndex(p => p.id == prob.id);
 351       const nextIdx = startIdx + dir;
 352       if (nextIdx >= 0 && nextIdx < problems.length)
 353         this.setHrefPid(problems[nextIdx]);
 354       else if (this.hasMore[mode]) this.loadMore(mode);
 355       else alert(this.st.tr["No more problems"]);
 356     },
 357     prepareNewProblem: function() {
 358       this.resetCurProb();
 359       window.doClick("modalNewprob");
 360     },
 361     sendProblem: function() {
 362       const error = checkProblem(this.curproblem);
 363       if (error) {
 364         alert(this.st.tr[error]);
 365         return;
 366       }
 367       const edit = this.curproblem.id > 0;
 368       this.infoMsg = "Processing... Please wait";
 369       ajax(
 370         "/problems",
 371         edit ? "PUT" : "POST",
 372         {
 373           data: { prob: this.curproblem },
 374           success: (ret) => {
 375             if (edit) {
 376               let editedP = this.problems["mine"].find(p => p.id == this.curproblem.id);
 377               this.copyProblem(this.curproblem, editedP);
 378               this.showProblem(editedP);
 379             }
 380             else {
 381               let newProblem = Object.assign({}, this.curproblem);
 382               newProblem.id = ret.id;
 383               newProblem.uid = this.st.user.id;
 384               newProblem.uname = this.st.user.name;
 385               this.problems["mine"] = [newProblem].concat(this.problems["mine"]);
 386             }
 387             document.getElementById("modalNewprob").checked = false;
 388             this.infoMsg = "";
 389           }
 390         }
 391       );
 392     },
 393     editProblem: function(prob) {
 394       // prob.diag might correspond to some other problem or be empty:
 395       this.setDiagram(prob); //V is loaded at this stage
 396       this.copyProblem(prob, this.curproblem);
 397       window.doClick("modalNewprob");
 398     },
 399     deleteProblem: function(prob) {
 400       if (confirm(this.st.tr["Are you sure?"])) {
 401         ajax(
 402           "/problems",
 403           "DELETE",
 404           {
 405             data: { id: prob.id },
 406             success: () => {
 407               const mode = prob.uid == (this.st.user.id ? "mine" : "others");
 408               ArrayFun.remove(this.problems[mode], p => p.id == prob.id);
 409               this.backToList();
 410             }
 411           }
 412         );
 413       }
 414     },
 415     loadMore: function(mode, cb) {
 416       ajax(
 417         "/problems",
 418         "GET",
 419         {
 420           data: {
 421             uid: this.st.user.id,
 422             mode: mode,
 423             cursor: this.cursor[mode]
 424           },
 425           success: (res) => {
 426             const L = res.problems.length;
 427             if (L > 0) {
 428               this.cursor[mode] = res.problems[L - 1].added;
 429               // Remove potential duplicates:
 430               const pids = this.problems[mode].map(p => p.id);
 431               ArrayFun.remove(res.problems, p => pids.includes(p.id), "all");
 432               this.decorate(res.problems);
 433               this.problems[mode] = this.problems[mode].concat(res.problems);
 434             } else this.hasMore[mode] = false;
 435             if (!!cb) cb();
 436           }
 437         }
 438       );
 439     }
 440   }
 441 };
 442 </script>
 443
 444 <style lang="sass" scoped>
 445 [type="checkbox"].modal+div .card
 446   max-width: 767px
 447   max-height: 100%
 448
 449 #inputFen
 450   width: 100%
 451
 452 textarea
 453   width: 100%
 454
 455 #diagram
 456   margin: 0 auto
 457   max-width: 400px
 458
 459 table#tProblems
 460   max-height: 100%
 461
 462 button#loadMoreBtn
 463   display: block
 464   margin: 0 auto
 465
 466 #controls
 467   margin: 0
 468   width: 100%
 469   text-align: center
 470   & > *
 471     margin: 0
 472
 473 p.oneInstructions
 474   margin: 0
 475   padding: 2px 5px
 476   background-color: lightgreen
 477
 478 #myProblems
 479   display: inline-block
 480
 481 #topPage
 482   span.vname
 483     font-weight: bold
 484     padding-left: var(--universal-margin)
 485   span.uname
 486     padding-left: var(--universal-margin)
 487   margin: 0 auto
 488   & > .nomargin
 489     margin: 0
 490   & > .marginleft
 491     margin: 0 0 0 15px
 492
 493 @media screen and (max-width: 767px)
 494   #topPage
 495     text-align: center
 496 </style>