Some advances. TODO: test board.js, and then game.js, and then implement room.js
[vchess.git] / public / javascripts / components / problems.js
index e3ab998..5307704 100644 (file)
@@ -4,9 +4,11 @@ Vue.component('my-problems', {
                        userId: user.id,
                        problems: [], //oldest first
                        myProblems: [], //same, but only mine
-                       display: "list", //or "myList"
-                       curIdx: -1, //index in (current) problems array
+                       singletons: [], //requested problems (using #num)
+                       display: "others", //or "mine"
+                       curProb: null, //(reference to) current displayed problem (if any)
                        showSolution: false,
+                       pbNum: 0, //to navigate directly to some problem
                        // New problem (to upload), or existing problem to edit:
                        modalProb: {
                                id: 0, //defined if it's an edit
@@ -30,13 +32,14 @@ Vue.component('my-problems', {
                                        <i class="material-icons">skip_next</i>
                                </button>
                        </div>
-                       <div id="mainBoard" v-show="curIdx>=0">
+                       <div id="mainBoard" v-show="!!curProb">
                                <div id="instructions-div" class="section-content">
                                        <p id="problem-instructions">
                                                {{ curProb.instructions }}
                                        </p>
                                </div>
-                               <my-board :fen="curProb.fen"></my-board>
+                               <my-game :fen="curProb.fen" :mode="analyze" :allowMovelist="true">
+                               </my-board>
                                <div id="solution-div" class="section-content">
                                        <h3 class="clickable" @click="showSolution = !showSolution">
                                                {{ translations["Show solution"] }}
@@ -45,12 +48,22 @@ Vue.component('my-problems', {
                                                {{ curProb.solution }}
                                        </p>
                                </div>
+                               <button @click="displayList()">
+                                       <span>Back to list display</span>
+                               </button>
+                       </div>
+                       <div>
+                               <input type="text" placeholder="Type problem number" v-model="pbNum"/>
+                               <button @click="showProblem()">
+                                       <span>Show problem</span>
+                               </button>
                        </div>
                        <button v-if="!!userId" @click="toggleListDisplay()">
                                <span>My problems (only)</span>
                        </button>
-                       <my-problem-summary v-show="curIdx<0"
-                               v-for="(p,idx) in sortedProblems" @click="setCurIdx(idx)"
+                       <my-problem-summary v-show="!curProb"
+                               v-on:edit-problem="editProblem(p)" v-on:delete-problem="deleteProblem(p.id)"
+                               v-for="p in curProblems" @click="curProb=p"
                                v-bind:prob="p" v-bind:userid="userId" v-bind:key="p.id">
                        </my-problem-summary>
                        <input type="checkbox" id="modal-newproblem" class="modal"/>
@@ -104,39 +117,53 @@ Vue.component('my-problems', {
                                        </div>
                                </div>
                        </div>
+                       <input id="modalNomore" type="checkbox" class="modal"/>
+                       <div role="dialog" aria-labelledby="nomoreMessage">
+                               <div class="card smallpad small-modal text-center">
+                                       <label for="modalNomore" class="modal-close"></label>
+                                       <h3 id="nomoreMessage" class="section">
+                                               {{ nomoreMessage }}
+                                       </h3>
+                               </div>
+                       </div>
                </div>
        `,
-       computed: {
-               sortedProblems: function() {
-                       // Newest problem first
-                       return this.curProblems.sort((a,b) => a.added - b.added);
-               },
-               curProb: function() {
-                       switch (this.display)
-                       {
-                               case "list":
-                                       return this.problems[this.curIdx];
-                               case "myList":
-                                       return this.myProblems[this.curIdx];
-                       }
-               },
-       },
        created: function() {
                if (location.hash.length > 0)
-               {
-                       this.getOneProblem(location.hash.slice(1)); //callback?
-                       this.curIdx = 0; //TODO: a bit more subtle, depending if it's my problem or not (set display)
-               }
+                       this.showProblem(location.hash.slice(1));
                else
-               {
-                       // Fetch most recent problems from server
-                       this.fetchProblems("backward"); //TODO: backward in time from the future. Second argument?
-               }
+                       this.firstFetch();
        },
        methods: {
-               setCurIndex: function(idx) {
-                       this.curIdx = idx;
-                       location.hash = "#" + idx;
+               firstFetch: function() {
+                       // Fetch most recent problems from server, for both lists
+                       this.fetchProblems("others", "bacwkard");
+                       this.fetchProblems("mine", "bacwkard");
+                       this.listsInitialized = true;
+               },
+               showProblem: function(num) {
+                       const pid = num || this.pbNum;
+                       location.hash = "#" + pid;
+                       const pIdx = this.singletons.findIndex(p => p.id == pid);
+                       if (pIdx >= 0)
+                               curProb = this.singletons[pIdx];
+                       else
+                       {
+                               // Cannot find problem in current set; get from server, and add to singletons.
+                               ajax(
+                                       "/problems/" + variant.name + "/" + pid, //TODO: use variant._id ?
+                                       "GET",
+                                       response => {
+                                               if (!!response.problem)
+                                               {
+                                                       this.singletons.push(response.problem);
+                                                       this.curProb = response.problem;
+                                               }
+                                               else
+                                                       this.noMoreProblems("Sorry, problem " + pid + " does not exist");
+                                       }
+                               );
+                       }
                },
                translate: function(text) {
                        return translations[text];
@@ -144,70 +171,102 @@ Vue.component('my-problems', {
                curProblems: function() {
                        switch (this.display)
                        {
-                               case "list":
+                               case "others":
                                        return this.problems;
-                               case "myList":
+                               case "mine":
                                        return this.myProblems;
                        }
                },
                // TODO?: get 50 from server but only show 10 at a time (for example)
                showNext: function(direction) {
-                       if (this.curIdx < 0)
-                               return this.fetchProblems(direction);
+                       if (!this.curProb)
+                               return this.fetchProblems(this.display, direction);
                        // Show next problem (older or newer):
                        let curProbs = this.curProblems();
-                       if ((this.curIdx > 0 && direction=="backward")
-                               || (this.curIdx < curProbs.length-1 && direction=="forward"))
+                       // Try to find a neighbour problem in the direction, among current set
+                       const neighbor = this.findClosestNeighbor(this.curProb, curProbs, direction);
+                       if (!!neighbor)
                        {
-                               this.setCurIdx(this.curIdx + (direction=="forward" ? 1 : -1));
+                               this.curProb = neighbor;
+                               return;
                        }
-                       else //at boundary
+                       // Boundary case: nothing in current set, need to fetch from server
+                       const curSize = curProbs.length;
+                       this.fetchProblems(this.display, direction);
+                       const newSize = curProbs.length;
+                       if (curSize == newSize) //no problems found
+                               return this.noMoreProblems("No more problems in this direction");
+                       // Ok, found something:
+                       this.curProb = this.findClosestNeighbor(this.curProb, curProbs, direction);
+               },
+               findClosestNeighbor: function(problem, probList, direction) {
+                       let neighbor = undefined;
+                       let smallestDistance = Number.MAX_SAFE_INTEGER;
+                       for (let prob of probList)
                        {
-                               const curSize = curProbs.length;
-                               this.fetchProblems(direction);
-                               const newSize = curProbs.length;
-                               if (curSize == newSize) //no problems found
-                                       return;
-                               switch (direction)
+                               const delta = Math.abs(prob.id - problem.id);
+                               if (delta < smallestDistance &&
+                                       ((direction == "backward" && prob.id < problem.id)
+                                       || (direction == "forward" && prob.id > problem.id)))
                                {
-                                       case "forward":
-                                               this.setCurIdx(this.curIdx+1);
-                                               break;
-                                       case "backward":
-                                               this.setCurIdx(newSize - curSize + this.curIdx-1);
-                                               break;
+                                       neighbor = prob;
+                                       smallestDistance = delta;
                                }
                        }
+                       return neighbor;
+               },
+               noMoreProblems: function(message) {
+                       this.nomoreMessage = message;
+                       let modalNomore = document.getElementById("modalNomore");
+                       modalNomore.checked = true;
+                       setTimeout(() => modalNomore.checked = false, 2000);
+               },
+               displayList: function() {
+                       this.curProb = null;
+                       location.hash = "";
+                       // Fetch problems if first call (if #num, and then lists)
+                       if (!this.listsInitialized)
+                               this.firstFetch();
                },
                toggleListDisplay: function() {
-                       this.display = (this.display == "list" ? "myList" : "list");
+                       this.display = (this.display == "others" ? "mine" : "others");
                },
-               // TODO: modal "there are no more problems"
-               fetchProblems: function(direction) {
-                       const problems = if ... this.problems ... ou this.myProblems;
-                       if (this.problems.length == 0)
-                               return; //what could we do?! -------> ask problems older than MAX_NUMBER + backward
-                       // Search for newest date (or oldest)
-                       let last_dt = this.problems[0].added;
-                       for (let i=0; i<this.problems.length; i++)
+               fetchProblems: function(type, direction) {
+                       let problems = (type == "others" ? this.problems : this.myProblems);
+                       let last_dt = (direction=="forward" ? 0 : Number.MAX_SAFE_INTEGER);
+                       if (this.problems.length > 0)
                        {
-                               if ((direction == "forward" && this.problems[i].added > last_dt) ||
-                                       (direction == "backward" && this.problems[i].added < last_dt))
+                               // Search for newest date (or oldest)
+                               last_dt = problems[0].added;
+                               for (let i=1; i<problems.length; i++)
                                {
-                                       last_dt = this.problems[i].added;
+                                       if ((direction == "forward" && this.problems[i].added > last_dt) ||
+                                               (direction == "backward" && this.problems[i].added < last_dt))
+                                       {
+                                               last_dt = this.problems[i].added;
+                                       }
                                }
                        }
-                       ajax("/problems/" + variant.name, "GET", { //TODO: use variant._id ?
-                               direction: direction,
-                               last_dt: last_dt,
-                       }, response => {
-                               if (response.problems.length > 0)
+                       ajax(
+                               "/problems/" + variant.name, //TODO: use variant._id ?
+                               "GET",
                                {
-                                       this.problems = response.problems
-                                               .sort((p1,p2) => { return p1.added - p2.added; });
-                                       this.setCurIndex(response.problems.length - 1);
+                                       type: type,
+                                       direction: direction,
+                                       last_dt: last_dt,
+                               },
+                               response => {
+                                       if (response.problems.length > 0)
+                                       {
+                                               Array.prototype.push.apply(problems,
+                                                       response.problems.sort((p1,p2) => { return p1.added - p2.added; }));
+                                               // If one list is empty but not the other, show the non-empty
+                                               const otherArray = (type == "mine" ? this.problems : this.myProblems);
+                                               if (problems.length > 0 && otherArray.length == 0)
+                                                       this.display = type;
+                                       }
                                }
-                       });
+                       );
                },
                previewProblem: function() {
                        if (!V.IsGoodFen(this.newProblem.fen))
@@ -218,6 +277,22 @@ Vue.component('my-problems', {
                                return alert(translations["Empty solution"]);
                        this.modalProb.preview = true;
                },
+               editProblem: function(prob) {
+                       this.modalProb = prob;
+                       document.getElementById("modal-newproblem").checked = true;
+               },
+               deleteProblem: function(pid) {
+                       ajax(
+                               "/problems/" + variant.name + "/" + pid, //TODO: with variant.id ?
+                               "DELETE",
+                               response => {
+                                       // Delete problem from the list on client side
+                                       let problems = this.curProblems();
+                                       const pIdx = problems.findIndex(p => p.id == pid);
+                                       problems.splice(pIdx, 1);
+                               }
+                       );
+               },
                sendProblem: function() {
                        // Send it to the server and close modal
                        ajax(
@@ -230,17 +305,12 @@ Vue.component('my-problems', {
                                        {
                                                this.modalProb.added = Date.now();
                                                this.modalProb.preview = false;
-                                               this.curProblems().push(JSON.parse(JSON.stringify(this.modalProb)));
+                                               this.myProblems.push(JSON.parse(JSON.stringify(this.modalProb)));
                                        }
                                        else
                                                this.modalProb.id = 0;
                                }
                        );
                },
-               // TODO: catch signal edit or delete ; on edit: modify modalProb and show modal
-               deleteProblem: function(pid) {
-                       // TODO: AJAX call
-                       // TODO: delete problem in curProblems() list
-               },
        },
 })