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             v-if="!v.noProblems"
  22             :value="v.id"
  23             :selected="curproblem.vid==v.id"
  24           )
  25             | {{ v.name }}
  26       fieldset
  27         input#inputFen(
  28           type="text"
  29           placeholder="FEN"
  30           v-model="curproblem.fen"
  31           @input="trySetDiagram(curproblem)"
  32         )
  33         #diagram(v-html="curproblem.diag")
  34       fieldset
  35         textarea(
  36           :placeholder="st.tr['Instructions']"
  37           v-model="curproblem.instruction"
  38         )
  39         p(v-html="parseHtml(curproblem.instruction)")
  40       fieldset
  41         textarea(
  42           :placeholder="st.tr['Solution']"
  43           v-model="curproblem.solution"
  44         )
  45         p(v-html="parseHtml(curproblem.solution)")
  46       button(@click="sendProblem()") {{ st.tr["Send"] }}
  47       #dialog.text-center {{ st.tr[infoMsg] }}
  48   .row(v-if="showOne")
  49     .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
  50       #topPage
  51         .button-group(v-if="canIedit(curproblem.uid)")
  52           button(@click="editProblem(curproblem)") {{ st.tr["Edit"] }}
  53           button(@click="deleteProblem(curproblem)") {{ st.tr["Delete"] }}
  54         span.vname {{ curproblem.vname }}
  55         span.uname ({{ curproblem.uname }})
  56         button.marginleft(@click="backToList()") {{ st.tr["Back to list"] }}
  57         button.nomargin(@click="gotoPrevNext($event,curproblem,1)")
  58           | {{ st.tr["Previous_p"] }}
  59         button.nomargin(@click="gotoPrevNext($event,curproblem,-1)")
  60           | {{ st.tr["Next_p"] }}
  61       p.oneInstructions.clickable(
  62         v-html="parseHtml(curproblem.instruction)"
  63         @click="curproblem.showSolution=!curproblem.showSolution"
  64       )
  65         | {{ st.tr["Show solution"] }}
  66       p(
  67         v-show="curproblem.showSolution"
  68         v-html="parseHtml(curproblem.solution)"
  69       )
  70   .row(v-else)
  71     .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
  72       #controls
  73         button#newProblem(@click="prepareNewProblem()")
  74           | {{ st.tr["New problem"] }}
  75         div#myProblems(v-if="st.user.id > 0")
  76           label(for="checkboxMine") {{ st.tr["My problems"] }}
  77           input#checkboxMine(
  78             type="checkbox"
  79             v-model="onlyMine"
  80           )
  81         label(for="selectVariant") {{ st.tr["Variant"] }}
  82         select#selectVariant(v-model="selectedVar")
  83           option(
  84             v-for="v in [emptyVar].concat(st.variants)"
  85             v-if="!v.noProblems"
  86             :value="v.id"
  87           )
  88             | {{ v.name }}
  89       table#tProblems
  90         tr
  91           th {{ st.tr["Variant"] }}
  92           th {{ st.tr["Instructions"] }}
  93           th {{ st.tr["Number"] }}
  94         tr(
  95           v-for="p in problems[onlyMine ? 'mine' : 'others']"
  96           v-show="onlyMine || !selectedVar || p.vid == selectedVar"
  97           @click="setHrefPid(p)"
  98         )
  99           td {{ p.vname }}
 100           td {{ firstChars(p.instruction) }}
 101           td {{ p.id }}
 102       button#loadMoreBtn(
 103         v-if="hasMore[onlyMine ? 'mine' : 'others']"
 104         @click="loadMore(onlyMine ? 'mine' : 'others')"
 105       )
 106         | {{ st.tr["Load more"] }}
 107   BaseGame(
 108     ref="basegame"
 109     v-if="showOne"
 110     :game="game"
 111   )
 112 </template>
 113
 114 <script>
 115 import { store } from "@/store";
 116 import { ajax } from "@/utils/ajax";
 117 import { checkProblem } from "@/data/problemCheck";
 118 import { getDiagram } from "@/utils/printDiagram";
 119 import { processModalClick } from "@/utils/modalClick";
 120 import { ArrayFun } from "@/utils/array";
 121 import BaseGame from "@/components/BaseGame.vue";
 122 export default {
 123   name: "my-problems",
 124   components: {
 125     BaseGame
 126   },
 127   data: function() {
 128     return {
 129       st: store.state,
 130       emptyVar: {
 131         vid: 0,
 132         vname: ""
 133       },
 134       // Problem currently showed, or edited:
 135       curproblem: {
 136         id: 0, //used in case of edit
 137         vid: 0,
 138         fen: "",
 139         diag: "",
 140         instruction: "",
 141         solution: "",
 142         showSolution: false
 143       },
 144       loadedVar: 0, //corresponding to loaded V
 145       selectedVar: 0, //to filter problems based on variant
 146       problems: { "mine": [], "others": [] },
 147       // timestamp of oldest showed problem:
 148       cursor: {
 149         mine: Number.MAX_SAFE_INTEGER,
 150         others: Number.MAX_SAFE_INTEGER
 151       },
 152       // hasMore == TRUE: a priori there could be more problems to load
 153       hasMore: { mine: true, others: true },
 154       onlyMine: false,
 155       showOne: false,
 156       infoMsg: "",
 157       admins: [1], //hard-coded for now. TODO
 158       game: {
 159         players: [{ name: "Problem" }, { name: "Problem" }],
 160         mode: "analyze"
 161       }
 162     };
 163   },
 164   created: function() {
 165     const pid = this.$route.query["id"];
 166     if (!!pid) this.showProblem(pid);
 167     else this.loadMore("others", () => { this.loadMore("mine"); });
 168   },
 169   mounted: function() {
 170     document.getElementById("newprobDiv")
 171       .addEventListener("click", processModalClick);
 172   },
 173   watch: {
 174     // st.variants changes only once, at loading from [] to [...]
 175     "st.variants": function() {
 176       // Set problems vname (either all are set or none)
 177       let problems = this.problems["others"].concat(this.problems["mine"]);
 178       if (problems.length > 0 && problems[0].vname == "")
 179         problems.forEach(p => this.setVname(p));
 180     },
 181     $route: function(to) {
 182       const pid = to.query["id"];
 183       if (!!pid) this.showProblem(pid);
 184       else {
 185         if (this.cursor["others"] == Number.MAX_SAFE_INTEGER)
 186           // Back from a single problem view at initial loading:
 187           // problems lists are empty!
 188           this.loadMore("others", () => { this.loadMore("mine"); });
 189         this.showOne = false;
 190       }
 191     }
 192   },
 193   methods: {
 194     fenFocusIfOpened: function(event) {
 195       if (event.target.checked) {
 196         this.infoMsg = "";
 197         document.getElementById("inputFen").focus();
 198       }
 199     },
 200     setVname: function(prob) {
 201       prob.vname = this.st.variants.find(v => v.id == prob.vid).name;
 202     },
 203     // Add vname and user names:
 204     decorate: function(problems, callback) {
 205       if (this.st.variants.length > 0)
 206         problems.forEach(p => this.setVname(p));
 207       // Retrieve all problems' authors' names
 208       let names = {};
 209       problems.forEach(p => {
 210         if (p.uid != this.st.user.id) names[p.uid] = "";
 211         else p.uname = this.st.user.name;
 212       });
 213       if (Object.keys(names).length > 0) {
 214         ajax(
 215           "/users",
 216           "GET",
 217           {
 218             data: { ids: Object.keys(names).join(",") },
 219             success: (res2) => {
 220               res2.users.forEach(u => {
 221                 names[u.id] = u.name;
 222               });
 223               problems.forEach(p => {
 224                 if (!p.uname)
 225                   p.uname = names[p.uid];
 226               });
 227               if (!!callback) callback();
 228             }
 229           }
 230         );
 231       } else if (!!callback) callback();
 232     },
 233     firstChars: function(text) {
 234       let preparedText = text
 235         // Replace line jumps and <br> by spaces
 236         .replace(/\n/g, " ")
 237         .replace(/<br\/?>/g, " ")
 238         .replace(/<[^>]+>/g, "") //remove remaining HTML tags
 239         .replace(/[ ]+/g, " ") //remove series of spaces by only one
 240         .trim();
 241       const maxLength = 32; //arbitrary...
 242       if (preparedText.length > maxLength)
 243         return preparedText.substr(0, 32) + "...";
 244       return preparedText;
 245     },
 246     copyProblem: function(p1, p2) {
 247       for (let key in p1) p2[key] = p1[key];
 248     },
 249     setHrefPid: function(p) {
 250       // Change href => $route changes, watcher notices, call showProblem
 251       const curHref = document.location.href;
 252       document.location.href = curHref.split("?")[0] + "?id=" + p.id;
 253     },
 254     backToList: function() {
 255       // Change href => $route change, watcher notices, reset showOne to false
 256       document.location.href = document.location.href.split("?")[0];
 257     },
 258     resetCurProb: function() {
 259       this.curproblem.id = 0;
 260       this.curproblem.uid = 0;
 261       this.curproblem.vid = "";
 262       this.curproblem.vname = "";
 263       this.curproblem.fen = "";
 264       this.curproblem.diag = "";
 265       this.curproblem.instruction = "";
 266       this.curproblem.solution = "";
 267       this.curproblem.showSolution = false;
 268     },
 269     parseHtml: function(txt) {
 270       return !txt.match(/<[/a-zA-Z]+>/)
 271         ? txt.replace(/\n/g, "<br/>") //no HTML tag
 272         : txt;
 273     },
 274     changeVariant: function(prob) {
 275       this.setVname(prob);
 276       this.loadVariant(prob.vid, () => {
 277         // Set FEN if possible (might not be correct yet)
 278         if (V.IsGoodFen(prob.fen)) this.setDiagram(prob);
 279         else prob.diag = "";
 280       });
 281     },
 282     loadVariant: async function(vid, cb) {
 283       // Condition: vid is a valid variant ID
 284       this.loadedVar = 0;
 285       const variant = this.st.variants.find(v => v.id == vid);
 286       await import("@/variants/" + variant.name + ".js")
 287       .then((vModule) => {
 288         window.V = vModule[variant.name + "Rules"];
 289         this.loadedVar = vid;
 290         cb();
 291       });
 292     },
 293     trySetDiagram: function(prob) {
 294       // Problem edit: FEN could be wrong or incomplete,
 295       // variant could not be ready, or not defined
 296       if (prob.vid > 0 && this.loadedVar == prob.vid && V.IsGoodFen(prob.fen))
 297         this.setDiagram(prob);
 298       else prob.diag = "";
 299     },
 300     setDiagram: function(prob) {
 301       // Condition: prob.fen is correct and global V is ready
 302       const parsedFen = V.ParseFen(prob.fen);
 303       const args = {
 304         position: parsedFen.position,
 305         orientation: parsedFen.turn
 306       };
 307       prob.diag = getDiagram(args);
 308     },
 309     showProblem: function(p_id) {
 310       const processWhenWeHaveProb = () => {
 311         this.loadVariant(p.vid, () => {
 312           this.onlyMine = (p.uid == this.st.user.id);
 313           // The FEN is already checked at this stage:
 314           this.game.vname = p.vname;
 315           this.game.mycolor = V.ParseFen(p.fen).turn; //diagram orientation
 316           this.game.fenStart = p.fen;
 317           this.game.fen = p.fen;
 318           this.showOne = true;
 319           // $nextTick to be sure $refs["basegame"] exists
 320           this.$nextTick(() => {
 321             this.$refs["basegame"].re_setVariables(this.game); });
 322           this.copyProblem(p, this.curproblem);
 323         });
 324       };
 325       let p = undefined;
 326       if (typeof p_id == "object") p = p_id;
 327       else {
 328         const problems = this.problems["others"].concat(this.problems["mine"]);
 329         p = problems.find(prob => prob.id == p_id);
 330       }
 331       if (!p) {
 332         // Bad luck: problem not in list. Get from server
 333         ajax(
 334           "/problems",
 335           "GET",
 336           {
 337             data: { id: p_id },
 338             success: (res) => {
 339               this.decorate([res.problem], () => {
 340                 p = res.problem;
 341                 const mode = (p.uid == this.st.user.id ? "mine" : "others");
 342                 this.problems[mode].push(p);
 343                 processWhenWeHaveProb();
 344               });
 345             }
 346           }
 347         );
 348       } else processWhenWeHaveProb();
 349     },
 350     gotoPrevNext: function(e, prob, dir) {
 351       const mode = (this.onlyMine ? "mine" : "others");
 352       const problems = this.problems[mode];
 353       const startIdx = problems.findIndex(p => p.id == prob.id);
 354       const nextIdx = startIdx + dir;
 355       if (nextIdx >= 0 && nextIdx < problems.length)
 356         this.setHrefPid(problems[nextIdx]);
 357       else if (this.hasMore[mode]) this.loadMore(mode);
 358       else alert(this.st.tr["No more problems"]);
 359     },
 360     prepareNewProblem: function() {
 361       this.resetCurProb();
 362       window.doClick("modalNewprob");
 363     },
 364     sendProblem: function() {
 365       const error = checkProblem(this.curproblem);
 366       if (error) {
 367         alert(this.st.tr[error]);
 368         return;
 369       }
 370       const edit = this.curproblem.id > 0;
 371       this.infoMsg = "Processing... Please wait";
 372       ajax(
 373         "/problems",
 374         edit ? "PUT" : "POST",
 375         {
 376           data: { prob: this.curproblem },
 377           success: (ret) => {
 378             if (edit) {
 379               let editedP = this.problems["mine"]
 380                 .find(p => p.id == this.curproblem.id);
 381               if (!editedP)
 382                 // I'm an admin and edit another user' problem
 383                 editedP = this.problems["others"]
 384                   .find(p => p.id == this.curproblem.id);
 385               this.copyProblem(this.curproblem, editedP);
 386               this.showProblem(editedP);
 387             }
 388             else {
 389               let newProblem = Object.assign({}, this.curproblem);
 390               newProblem.id = ret.id;
 391               newProblem.uid = this.st.user.id;
 392               newProblem.uname = this.st.user.name;
 393               this.problems["mine"] =
 394                 [newProblem].concat(this.problems["mine"]);
 395             }
 396             document.getElementById("modalNewprob").checked = false;
 397             this.infoMsg = "";
 398           }
 399         }
 400       );
 401     },
 402     canIedit: function(puid) {
 403       return this.admins.concat([puid]).includes(this.st.user.id);
 404     },
 405     editProblem: function(prob) {
 406       // prob.diag might correspond to some other problem or be empty:
 407       this.setDiagram(prob); //V is loaded at this stage
 408       this.copyProblem(prob, this.curproblem);
 409       window.doClick("modalNewprob");
 410     },
 411     deleteProblem: function(prob) {
 412       if (confirm(this.st.tr["Are you sure?"])) {
 413         ajax(
 414           "/problems",
 415           "DELETE",
 416           {
 417             data: { id: prob.id },
 418             success: () => {
 419               const mode = prob.uid == (this.st.user.id ? "mine" : "others");
 420               ArrayFun.remove(this.problems[mode], p => p.id == prob.id);
 421               this.backToList();
 422             }
 423           }
 424         );
 425       }
 426     },
 427     loadMore: function(mode, cb) {
 428       ajax(
 429         "/problems",
 430         "GET",
 431         {
 432           data: {
 433             uid: this.st.user.id,
 434             mode: mode,
 435             cursor: this.cursor[mode]
 436           },
 437           success: (res) => {
 438             const L = res.problems.length;
 439             if (L > 0) {
 440               this.cursor[mode] = res.problems[L - 1].added;
 441               // Remove potential duplicates:
 442               const pids = this.problems[mode].map(p => p.id);
 443               ArrayFun.remove(res.problems, p => pids.includes(p.id), "all");
 444               this.decorate(res.problems);
 445               this.problems[mode] = this.problems[mode].concat(res.problems);
 446             } else this.hasMore[mode] = false;
 447             if (!!cb) cb();
 448           }
 449         }
 450       );
 451     }
 452   }
 453 };
 454 </script>
 455
 456 <style lang="sass" scoped>
 457 [type="checkbox"].modal+div .card
 458   max-width: 767px
 459   max-height: 100%
 460
 461 #inputFen
 462   width: 100%
 463
 464 textarea
 465   width: 100%
 466
 467 #diagram
 468   margin: 0 auto
 469   max-width: 400px
 470
 471 table#tProblems
 472   max-height: 100%
 473
 474 button#loadMoreBtn
 475   display: block
 476   margin: 0 auto
 477
 478 #controls
 479   margin: 0
 480   width: 100%
 481   text-align: center
 482   & > *
 483     margin: 0
 484
 485 p.oneInstructions
 486   margin: 0
 487   padding: 2px 5px
 488   background-color: lightgreen
 489
 490 #myProblems
 491   display: inline-block
 492
 493 #topPage
 494   span.vname
 495     font-weight: bold
 496     padding-left: var(--universal-margin)
 497   span.uname
 498     padding-left: var(--universal-margin)
 499   margin: 0 auto
 500   & > .nomargin
 501     margin: 0
 502   & > .marginleft
 503     margin: 0 0 0 15px
 504
 505 @media screen and (max-width: 767px)
 506   #topPage
 507     text-align: center
 508 </style>