import { DBAccess } from "../db/index.js";
import { Router } from "express";
const router = Router();

router.use(function (req, res, next) {
    if (req.session.isAdmin) {
        next();
    } else {
        throw new Error("Вы не являетесь администраторром");
    }
});

router.get("/", async function (req, res, next) {
    res.render("admin/index", { title: "Администратор" });
});

router.get("/voters", async function (req, res, next) {
    const voters = await DBAccess.getVoters();
    res.json(voters);
});

router.get("/voters/:id/promote/:vgid", async function (req, res, next) {
    const isAcceptJson = req.accepts("json");
    const { id, vgid } = req.params;
    try {
        if (id == req.session.userid) {
            throw new Error("Нельзя изменить свою группу");
        }
        await DBAccess.promoteVoter(id, vgid, req.session.vgroup_id == vgid);
        if (isAcceptJson) {
            res.json({ status: "ok" });
        } else {
            res.redirect("/admin");
        }
    } catch (e) {
        if (isAcceptJson) {
            res.json({ status: "error", error: e.message });
        } else {
            res.render("admin/index", { title: "Администратор", flashes: ["Ошибка изменения группы", e.message] });
        }
    }
});

router.post("/voters/create", async function (req, res, next) {
    const { login, password, full_name } = req.body;
    try {
        await DBAccess.createVoter(login, password, full_name, false);
        res.redirect("/admin");
    } catch (e) {
        res.render("admin/index", { title: "Администратор", flashes: ["Ошибка создания пользователя", e.message] });
    }
});

router.get("/voters/:id/delete", async function (req, res, next) {
    const isAcceptJson = req.accepts("json");
    const { id } = req.params;
    try {
        if (id == req.session.userid) {
            throw new Error("Нельзя удалить самого себя");
        }
        await DBAccess.deleteVoter(id);
        if (isAcceptJson) {
            res.json({ status: "ok" });
        } else {
            res.redirect("/admin");
        }
    } catch (e) {
        if (isAcceptJson) {
            res.json({ status: "error", error: e.message });
        } else {
            res.render("admin/index", { title: "Администратор", flashes: ["Ошибка удаления пользователя", e.message] });
        }
    }
});

router.get("/vgroups", async function (req, res, next) {
    const vgroups = await DBAccess.getVgroups();
    res.json(vgroups);
});

router.post("/vgroups/create", async function (req, res, next) {
    const { name, description } = req.body;
    if (name.length < 3) {
        res.render("admin/index", { title: "Администратор", flashes: ["Минимальная длина названия группы - три символа"] });
    } else {
        const vgroup = await DBAccess.createVgroup(name, description || "");
        if (vgroup) {
            res.redirect("/admin");
        } else {
            res.render("admin/index", { title: "Администратор", flashes: ["Ошибка создания группы"] });
        }
    }
});

router.get("/vgroups/:id/delete", async function (req, res, next) {
    const isAcceptJson = req.accepts("json");
    const { id } = req.params;
    try {
        if (id == req.session.vgroup_id) {
            throw new Error("Нельзя удалить свою группу");
        }
        await DBAccess.deleteVgroup(id);
        if (isAcceptJson) {
            res.json({ status: "ok" });
        } else {
            res.redirect("/admin");
        }
    } catch (e) {
        if (isAcceptJson) {
            res.json({ status: "error", error: e.message });
        } else {
            res.render("admin/index", { title: "Администратор", flashes: ["Ошибка удаления группы", e.message] });
        }
    }
});

router.get("/votes", async function (req, res, next) {
    const votes = await DBAccess.getVotes();
    res.json(votes);
});

router.get("/votes/groupped", async function (req, res, next) {
    const grouppedVotes = await DBAccess.getGrouppedVotes();
    res.json(grouppedVotes);
});

router.get("/votes/:id/delete", async function (req, res, next) {
    const isAcceptJson = req.accepts("json");
    const { id } = req.params;
    try {
        await DBAccess.deleteVote(id);
        if (isAcceptJson) {
            res.json({ status: "ok" });
        } else {
            res.redirect("/admin");
        }
    } catch (e) {
        if (isAcceptJson) {
            res.json({ status: "error", error: e.message });
        } else {
            res.render("admin/index", { title: "Администратор", flashes: ["Ошибка удаления голоса", e.message] });
        }
    }
});

export default router;