const crypto = require('crypto');
const db = require("../config/db");

class SheepService {
    getSheep(uuid, sheepRole) {
        return new Promise((res, rej) => {
            let sql = `
                SELECT 
                    sheeps.*,
                    groups.group_number AS group_id,
                    administrators.id AS administrators_id,
                    administrators.uuid AS administrators_uuid,
                    moderators.id AS moderators_id,
                    moderators.uuid AS moderators_uuid,
                    moderators.can_add_sheeps,
                    moderators.can_add_territory,
                    moderators.can_manager_territory,
                    moderators.can_add_stand,
                    moderators.can_manager_stand,
                    moderators.can_add_schedule
                FROM 
                    sheeps
                LEFT JOIN 
                    groups ON groups.group_number = sheeps.group_id
                LEFT JOIN 
                    administrators ON administrators.sheep_id = sheeps.id
                LEFT JOIN 
                    moderators ON moderators.sheep_id = sheeps.id
                WHERE 
                    sheeps.uuid = ? 
                LIMIT 1;
            `
            db.get(sql, [uuid], (err, sheep) => {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (!sheep) {
                    console.log({ "error": "uuid not found" });
                    return res(false);
                } else {
                    let data = {
                        "id": Number(sheep.id),
                        "group_id": Number(sheep.group_id),
                        "name": sheep.name,
                        "icon": sheep.icon,
                        "uuid": sheep.uuid,
                        "appointment": sheep.appointment,
                        "can_view_stand": sheep.can_view_stand == 0 ? false : true,
                        "can_view_schedule": sheep.can_view_schedule == 0 ? false : true,
                        "can_view_territory": sheep.can_view_territory == 0 ? false : true,
                        "administrator": {
                            "id": sheep.administrators_id ? sheep.administrators_id : false,
                            "uuid": null
                        },
                        "moderator": {
                            "id": sheep.moderators_id ? sheep.moderators_id : false,
                            "uuid": null,
                            "can_add_sheeps": sheep.can_add_sheeps == 1 ? true : false,
                            "can_add_territory": sheep.can_add_territory == 1 ? true : false,
                            "can_manager_territory": sheep.can_manager_territory == 1 ? true : false,
                            "can_add_stand": sheep.can_add_stand == 1 ? true : false,
                            "can_manager_stand": sheep.can_manager_stand == 1 ? true : false,
                            "can_add_schedule": sheep.can_add_schedule == 1 ? true : false
                        }
                    }

                    if (sheepRole == "administrator") {
                        if (sheep.administrators_id) {
                            data.administrator.uuid = sheep.administrators_uuid;
                        }
                        if (sheep.moderators_id) {
                            data.moderator.uuid = sheep.moderators_uuid;
                        }
                    }

                    return res(data);
                }
            });
        });
    }
    getList(sheepRole) {
        return new Promise((res, rej) => {
            let sql = `
                    SELECT 
                        sheeps.*,
                        groups.group_number AS group_id,
                        administrators.id AS administrators_id,
                        administrators.uuid AS administrators_uuid,
                        moderators.id AS moderators_id,
                        moderators.uuid AS moderators_uuid,
                        moderators.can_add_sheeps,
                        moderators.can_add_territory,
                        moderators.can_manager_territory,
                        moderators.can_add_stand,
                        moderators.can_manager_stand,
                        moderators.can_add_schedule
                    FROM 
                        sheeps
                    LEFT JOIN 
                        groups ON groups.group_number = sheeps.group_id
                    LEFT JOIN 
                        administrators ON administrators.sheep_id = sheeps.id
                    LEFT JOIN 
                        moderators ON moderators.sheep_id = sheeps.id
                    ORDER BY 
                        id
                `;

            db.all(sql, (err, sheeps) => {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else {
                    let result = sheeps.map((sheep) => {
                        let data = {
                            "id": Number(sheep.id),
                            "group_id": Number(sheep.group_id),
                            "name": sheep.name,
                            "icon": sheep.icon,
                            "uuid": sheep.uuid,
                            "appointment": sheep.appointment,
                            "can_view_stand": sheep.can_view_stand == 0 ? false : true,
                            "can_view_schedule": sheep.can_view_schedule == 0 ? false : true,
                            "can_view_territory": sheep.can_view_territory == 0 ? false : true,
                            "administrator": {
                                "id": sheep.administrators_id ? sheep.administrators_id : false,
                                "uuid": null
                            },
                            "moderator": {
                                "id": sheep.moderators_id ? sheep.moderators_id : false,
                                "uuid": null,
                                "can_add_sheeps": sheep.can_add_sheeps == 1 ? true : false,
                                "can_add_territory": sheep.can_add_territory == 1 ? true : false,
                                "can_manager_territory": sheep.can_manager_territory == 1 ? true : false,
                                "can_add_stand": sheep.can_add_stand == 1 ? true : false,
                                "can_manager_stand": sheep.can_manager_stand == 1 ? true : false,
                                "can_add_schedule": sheep.can_add_schedule == 1 ? true : false
                            }
                        }

                        if (sheepRole == "administrator") {
                            if (sheep.administrators_id) {
                                data.administrator.uuid = sheep.administrators_uuid;
                            }
                            if (sheep.moderators_id) {
                                data.moderator.uuid = sheep.moderators_uuid;
                            }
                        }

                        return data;
                    })

                    return res(result);
                }
            });
        });
    }
    getAdministrator(uuid) {
        return new Promise((res, rej) => {
            let sql = `
                SELECT 
                    sheeps.*,
                    groups.group_number AS group_id,
                    administrators.id AS administrators_id,
                    administrators.uuid AS administrators_uuid
                FROM 
                    sheeps
                JOIN 
                    administrators ON sheeps.id = administrators.sheep_id
                LEFT JOIN 
                    groups ON groups.group_number = sheeps.group_id
                WHERE 
                    administrators.uuid = ? 
                LIMIT 1;
            `
            db.get(sql, [uuid], (err, sheep) => {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (!sheep) {
                    console.log({ "error": "uuid not found" });
                    return res(false);
                } else {
                    let data = {
                        "id": Number(sheep.id),
                        "group_id": Number(sheep.group_id),
                        "name": sheep.name,
                        "icon": sheep.icon,
                        "uuid": sheep.uuid,
                        "appointment": sheep.appointment,
                        "can_view_stand": sheep.can_view_stand == 0 ? false : true,
                        "can_view_schedule": sheep.can_view_schedule == 0 ? false : true,
                        "can_view_territory": sheep.can_view_territory == 0 ? false : true,
                        "administrator": {
                            "id": sheep.administrators_id,
                            "uuid": sheep.administrators_uuid
                        },
                        "moderator": false
                    }

                    return res(data);
                }
            });
        });
    }
    getModerator(uuid) {
        return new Promise((res, rej) => {
            let sql = `
                SELECT 
                    sheeps.*,
                    groups.group_number AS group_id,
                    moderators.id AS moderators_id,
                    moderators.uuid AS moderators_uuid,
                    moderators.can_add_sheeps AS can_add_sheeps,
                    moderators.can_add_territory AS can_add_territory,
                    moderators.can_manager_territory AS can_manager_territory,
                    moderators.can_add_stand AS can_add_stand,
                    moderators.can_manager_stand AS can_manager_stand,
                    moderators.can_add_schedule AS can_add_schedule
                FROM 
                    sheeps
                JOIN 
                    moderators ON sheeps.id = moderators.sheep_id
                LEFT JOIN 
                    groups ON groups.group_number = sheeps.group_id
                WHERE 
                    moderators.uuid = ? 
                LIMIT 1;
            `
            db.get(sql, [uuid], (err, sheep) => {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (!sheep) {
                    console.log({ "error": "uuid not found" });
                    return res(false);
                } else {
                    let data = {
                        "id": Number(sheep.id),
                        "group_id": Number(sheep.group_id),
                        "name": sheep.name,
                        "icon": sheep.icon,
                        "uuid": sheep.uuid,
                        "appointment": sheep.appointment,
                        "can_view_stand": sheep.can_view_stand == 0 ? false : true,
                        "can_view_schedule": sheep.can_view_schedule == 0 ? false : true,
                        "can_view_territory": sheep.can_view_territory == 0 ? false : true,
                        "administrator": false,
                        "moderator": {
                            "id": sheep.moderators_id,
                            "uuid": sheep.moderators_uuid,
                            "can_add_sheeps": sheep.can_add_sheeps == 0 ? false : true,
                            "can_add_territory": sheep.can_add_territory == 0 ? false : true,
                            "can_manager_territory": sheep.can_manager_territory == 0 ? false : true,
                            "can_add_stand": sheep.can_add_stand == 0 ? false : true,
                            "can_manager_stand": sheep.can_manager_stand == 0 ? false : true,
                            "can_add_schedule": sheep.can_add_schedule == 0 ? false : true
                        }
                    }

                    return res(data);
                }
            });
        });
    }
    createSheep(data) {
        return new Promise((res, rej) => {
            let sql = 'INSERT INTO sheeps(name, group_id, appointment, uuid) VALUES (?, ?, ?, ?)';

            let uuid = crypto.randomUUID();

            db.run(sql, [
                data.name,
                Number(data.group_id),
                data.appointment,
                uuid
            ], function (err) {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (this.changes === 0) {
                    return res(false);
                } else {
                    res({ "status": "ok", "id": this.lastID, "uuid": uuid });
                }
            });
        });
    }
    updateSheep(data) {
        return new Promise(async (res, rej) => {
            try {
                let sql = `
                    UPDATE sheeps 
                    SET name = ?, group_id = ?, appointment = ?, 
                        can_view_stand = ?, can_view_schedule = ?, can_view_territory = ? 
                    WHERE uuid = ?
                `;

                await db.run(sql, [
                    data.name,
                    Number(data.group_id),
                    data.appointment,
                    data.can_view_stand ? 1 : 0,
                    data.can_view_schedule ? 1 : 0,
                    data.can_view_territory ? 1 : 0,
                    data.uuid
                ]);

                if (data.role === "administrator") {
                    if (!data.administrator?.id) {
                        await db.run(
                            'INSERT INTO administrators(sheep_id, uuid) VALUES (?, ?)',
                            [data.id, crypto.randomUUID()]
                        );
                        console.log({ insert: "ok" });
                    }
                    if (data.moderator?.id) {
                        await db.run('DELETE FROM moderators WHERE id = ?', [data.moderator.id]);
                        console.log({ delete: "ok" });
                    }
                } else if (data.role === "moderator") {
                    if (!data.moderator?.id) {
                        await db.run(
                            `INSERT INTO moderators(sheep_id, can_add_sheeps, can_add_territory, 
                            can_manager_territory, can_add_stand, can_manager_stand, 
                            can_add_schedule, uuid) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
                            [
                                data.id,
                                data.moderator.can_add_sheeps ? 1 : 0,
                                data.moderator.can_add_territory ? 1 : 0,
                                data.moderator.can_manager_territory ? 1 : 0,
                                data.moderator.can_add_stand ? 1 : 0,
                                data.moderator.can_manager_stand ? 1 : 0,
                                data.moderator.can_add_schedule ? 1 : 0,
                                crypto.randomUUID()
                            ]
                        );
                        console.log({ insert: "ok" });
                    } else {
                        await db.run(
                            `UPDATE moderators 
                            SET can_add_sheeps = ?, can_add_territory = ?, 
                                can_manager_territory = ?, can_add_stand = ?, 
                                can_manager_stand = ?, can_add_schedule = ? 
                            WHERE id = ?`,
                            [
                                data.moderator.can_add_sheeps ? 1 : 0,
                                data.moderator.can_add_territory ? 1 : 0,
                                data.moderator.can_manager_territory ? 1 : 0,
                                data.moderator.can_add_stand ? 1 : 0,
                                data.moderator.can_manager_stand ? 1 : 0,
                                data.moderator.can_add_schedule ? 1 : 0,
                                data.moderator.id
                            ]
                        );
                        console.log({ update: "ok" });
                    }
                    if (data.administrator?.id) {
                        await db.run('DELETE FROM administrators WHERE id = ?', [data.administrator.id]);
                        console.log({ delete: "ok" });
                    }
                } else if (data.role === "sheep") {
                    if (data.moderator?.id) {
                        await db.run('DELETE FROM moderators WHERE id = ?', [data.moderator.id]);
                        console.log({ delete: "ok" });
                    }
                    if (data.administrator?.id) {
                        await db.run('DELETE FROM administrators WHERE id = ?', [data.administrator.id]);
                        console.log({ delete: "ok" });
                    }
                }

                res({ status: "ok", id: data.id });
            } catch (err) {
                console.error(err.message);
                rej(false);
            }
        });
    }
    deleteSheep(data) {
        return new Promise((res, rej) => {
            db.run('DELETE FROM sheeps WHERE uuid = ?', [data.uuid], function (err) {
                if (err) {
                    console.error(err.message);
                    return res(false);
                } else if (this.changes === 0) {
                    return res(false);
                } else {
                    res({ "dellete": "ok" });
                }
            });
        });
    }
}

module.exports = new SheepService();