-// AJAX methods to get, create, update or delete a problem
-
-let router = require("express").Router();
-const access = require("../utils/access");
-const ProblemModel = require("../models/Problem");
-const sanitizeHtml = require('sanitize-html');
-const MaxNbProblems = 20;
-
-function sanitizeUserInput(fen, instructions, solution)
-{
- if (!fen.match(/^[a-zA-Z0-9, /-]*$/))
- return "Bad characters in FEN string";
- instructions = sanitizeHtml(instructions);
- solution = sanitizeHtml(solution);
- if (instructions.length == 0)
- return "Empty instructions";
- if (solution.length == 0)
- return "Empty solution";
- return {
- fen: fen,
- instructions: instructions,
- solution: solution
- };
-}
-
-// Get one problem (TODO: vid unused, here for URL de-ambiguification)
-router.get("/problems/:vid([0-9]+)/:id([0-9]+)", access.ajax, (req,res) => {
- const pid = req.params["id"];
- ProblemModel.getOne(pid, (err,problem) => {
- if (!!err)
- return res.json(err);
- return res.json({problem: problem});
- });
-});
-
-// Fetch N previous or next problems
-router.get("/problems/:vid([0-9]+)", access.ajax, (req,res) => {
- const vid = req.params["vid"];
- const directionStr = (req.query.direction == "forward" ? ">" : "<");
- const lastDt = req.query.last_dt;
- const type = req.query.type;
- if (!lastDt.match(/[0-9]+/))
- return res.json({errmsg: "Bad timestamp"});
- if (!["others","mine"].includes(type))
- return res.json({errmsg: "Bad type"});
- ProblemModel.fetchN(vid, req.userId, type, directionStr, lastDt, MaxNbProblems,
- (err,problems) => {
- if (!!err)
- return res.json(err);
- return res.json({problems: problems});
- }
- );
-});
-
-// Upload a problem (sanitize inputs)
-router.post("/problems/:vid([0-9]+)", access.logged, access.ajax, (req,res) => {
- const vid = req.params["vid"];
- const s = sanitizeUserInput(
- req.body["fen"], req.body["instructions"], req.body["solution"]);
- if (typeof s === "string")
- return res.json({errmsg: s});
- ProblemModel.create(req.userId, vid, s.fen, s.instructions, s.solution,
- (err,pid) => {
- if (!!err)
- return res.json(err);
- res.json({id: pid["rowid"]});
- }
- );
-});
-
-// Update a problem (also sanitize inputs)
-router.put("/problems/:id([0-9]+)", access.logged, access.ajax, (req,res) => {
- const pid = req.params["id"]; //problem ID
- const s = sanitizeUserInput(
- req.body["fen"], req.body["instructions"], req.body["solution"]);
- if (typeof s === "string")
- return res.json({errmsg: s});
- ProblemModel.update(pid, req.userId, s.fen, s.instructions, s.solution,
- err => {
- if (!!err)
- return res.json(err);
- res.json({});
- }
- );
-});
-
-// Delete a problem
-router.delete("/problems/:id([0-9]+)", access.logged, access.ajax, (req,res) => {
- const pid = req.params["id"]; //problem ID
- ProblemModel.remove(pid, req.userId);
- res.json({});
-});
-
-module.exports = router;