export const setup = function (router, con, server) {
    const PIDS = {}; //[pid]: true/"already_used"
    router.get("/api/pid", async function (req, res) {
        res.set("Access-Control-Allow-Origin", "*");
        let pid = server.genstring(10); //collision chance is low enough, but we'll check anyways
        while (PIDS[pid] != undefined) {
            pid = server.genstring(10);
            console.log(5, "pid collision");
        }
        PIDS[pid] = true;
        setTimeout(function() {
            PIDS[pid] = undefined;
        }, 40000);
        res.json({ "pid": pid });
    });
    router.post("/api/post", async function (req, res) {
        if (!req.body.message) {
            res.json({ "error": "no message to post" });
            return;
        }
        if ((typeof req.body.message) != "string") {
            res.json({ "error": "no message to post" });
            return;
        }
        if ((typeof req.body.pid) != "string") {
            res.json({ "error": "no pid given" });
            return;
        }
        if (req.body.pid.length != 10 || PIDS[req.body.pid] !== true) {
            res.json({ "error": "invalid pid given" });
            return;
        }
        PIDS[req.body.pid] = "already_used";
        let reply_id;
        if (!req.body.reply_id || req.body.reply_id < 0) {
            reply_id = 0;
        }
        else {
            reply_id = req.body.reply_id;
        }
        if ((typeof req.body.reply_id) != "number") {
            res.json({ "error": "no valid reply id given" });
            return;
        }
        if (req.body.message.length > 1000) {
            res.json({ "error": "message too long" });
            return;
        }
        req.body.message = encodeURIComponent(req.body.message.trim());
        if (req.body.message.length > 3000) {
            res.json({ "error": "message too long" }); //check again after URI encoding it
            return;
        }
        req.body.receiver = encodeURIComponent(req.body.receiver || "");
        if (req.body.receiver == "")
            req.body.receiver = "everyone";
        if (!req.body.message) {
            res.json({ "error": "no message to post" });
            return;
        }
        let sql = `insert into ipost.posts (post_user_name,post_text,post_time,post_receiver_name,post_from_bot,post_reply_id) values (?,?,?,?,?,?);`;
        let values = [encodeURIComponent(res.locals.username), req.body.message, Date.now(), req.body.receiver, res.locals.isbot, reply_id];
        con.query(sql, values, function (err, result) {
            if (err)
                throw err;
            let post_obj = {
                post_user_name: encodeURIComponent(res.locals.username),
                post_text: req.body.message,
                post_time: Date.now(),
                post_special_text: "",
                post_receiver_name: req.body.receiver,
                post_from_bot: res.locals.isbot,
                post_reply_id: reply_id
            };
            let message = {
                message: "new_post",
                data: post_obj
            };
            let messagestr = JSON.stringify(message);
            let channel = decodeURIComponent(req.body.receiver);
            server.wss.clients.forEach(async function (ws) {
                if (ws.channel == channel) {
                    ws.send(messagestr);
                }
            });
            res.json({ "success": "successfully posted message" });
            console.log(5, `posted new message by ${res.locals.username} : ${req.body.message}`);
        });
    });
};
export default {
    setup
};