+ 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)
+ }
+ else
+ {
+ // Fetch most recent problems from server
+ this.fetchProblems("backward"); //TODO: backward in time from the future. Second argument?
+ }
+ },
+ methods: {
+ setCurIndex: function(idx) {
+ this.curIdx = idx;
+ location.hash = "#" + idx;
+ },
+ translate: function(text) {
+ return translations[text];
+ },
+ curProblems: function() {
+ switch (this.display)
+ {
+ case "list":
+ return this.problems;
+ case "myList":
+ 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);
+ // Show next problem (older or newer):
+ let curProbs = this.curProblems();
+ if ((this.curIdx > 0 && direction=="backward")
+ || (this.curIdx < curProbs.length-1 && direction=="forward"))
+ {
+ this.setCurIdx(this.curIdx + (direction=="forward" ? 1 : -1));
+ }
+ else //at boundary
+ {
+ const curSize = curProbs.length;
+ this.fetchProblems(direction);
+ const newSize = curProbs.length;
+ if (curSize == newSize) //no problems found
+ return;
+ switch (direction)
+ {
+ case "forward":
+ this.setCurIdx(this.curIdx+1);
+ break;
+ case "backward":
+ this.setCurIdx(newSize - curSize + this.curIdx-1);
+ break;
+ }
+ }
+ },
+ toggleListDisplay: function() {
+ this.display = (this.display == "list" ? "myList" : "list");
+ },
+ // 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++)
+ {
+ 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)
+ {
+ this.problems = response.problems
+ .sort((p1,p2) => { return p1.added - p2.added; });
+ this.setCurIndex(response.problems.length - 1);
+ }
+ });
+ },
+ previewProblem: function() {
+ if (!V.IsGoodFen(this.newProblem.fen))
+ return alert(translations["Bad FEN description"]);
+ if (this.newProblem.instructions.trim().length == 0)
+ return alert(translations["Empty instructions"]);
+ if (this.newProblem.solution.trim().length == 0)
+ return alert(translations["Empty solution"]);
+ this.modalProb.preview = true;
+ },
+ sendProblem: function() {
+ // Send it to the server and close modal
+ ajax(
+ "/problems/" + variant.name, //TODO: with variant.id ?
+ (this.modalProb.id > 0 ? "PUT" : "POST"),
+ this.modalProb,
+ response => {
+ document.getElementById("modal-newproblem").checked = false;
+ if (this.modalProb.id == 0)
+ {
+ this.modalProb.added = Date.now();
+ this.modalProb.preview = false;
+ this.curProblems().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
+ },
+ },