const db = require("../config/db");
const saveCards = require("../middleware/genCards");

class ConstructorService {
    // createPack(data) {
    //     return new Promise((res, rej) => {
    //         let sql = `
    //             INSERT INTO 
    //                 house(
    //                 group_id,
    //                 title,
    //                 number,
    //                 points,
    //                 points_number,
    //                 geo,
    //                 osm_id,
    //                 settlement,
    //                 created_at
    //                 ) 
    //             VALUES 
    //                 (?, ?, ?, ?, ?, ?, ?, ?, ?)
    //         `;

    //         db.run(sql, [
    //             Number(data.house.group_id),
    //             data.house.title,
    //             data.house.number,
    //             JSON.stringify(data.house.points),
    //             JSON.stringify(data.house.points_number),
    //             JSON.stringify(data.house.geo),
    //             JSON.stringify(data.house.osm_id),
    //             data.house.settlement,
    //             Math.floor(Date.now())
    //         ], function (err) {
    //             if (err) {
    //                 console.error(err.message);
    //                 return res(false);
    //             } else if (this.changes === 0) {
    //                 return res(false);
    //             } else {
    //                 const houseId = this.lastID;

    //                 const entranceStmt = db.prepare(`
    //                     INSERT INTO 
    //                         entrance(
    //                             house_id, 
    //                             entrance_number, 
    //                             title, 
    //                             points, 
    //                             points_number, 
    //                             created_at
    //                         ) 
    //                     VALUES 
    //                         (?, ?, ?, ?, ?, ?)`);

    //                 const apartmentStmt = db.prepare(`
    //                     INSERT INTO 
    //                         apartments(
    //                             entrance_id, 
    //                             apartment_number, 
    //                             floors_number, 
    //                             updated_at
    //                         ) 
    //                     VALUES 
    //                         (?, ?, ?, ?)`);

    //                 data.entrance.forEach((e, index) => {
    //                     entranceStmt.run(
    //                         houseId,
    //                         Number(e.entrance_number),
    //                         e.title,
    //                         JSON.stringify(e.points),
    //                         JSON.stringify(e.points_number),
    //                         Math.floor(Date.now()),
    //                         function (err) {
    //                             if (err) {
    //                                 console.error(err.message);
    //                                 return;
    //                             }
    //                             const entranceId = this.lastID;

    //                             if (data.apartments[e.editor_id]) {
    //                                 data.apartments[e.editor_id].forEach(apartment => {
    //                                     apartmentStmt.run(
    //                                         entranceId,
    //                                         apartment.apartment_number,
    //                                         apartment.floors_number,
    //                                         Math.floor(Date.now())
    //                                     );
    //                                 });
    //                             }
    //                         }
    //                     );
    //                 });

    //                 entranceStmt.finalize();
    //                 apartmentStmt.finalize();

    //                 // res({ "status": "ok", "id": houseId });
    //             }
    //         });
    //     });
    // }
    createPack(data) {
        return new Promise((res, rej) => {

            if (data.type == "house") {
                const sql = `
                    INSERT INTO house (
                        group_id, title, number, points, points_number, geo, osm_id, settlement, created_at
                    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`;

                db.run(sql, [
                    Number(data.group_id),
                    data.title,
                    data.number,
                    JSON.stringify(data.points),
                    JSON.stringify(data.points_number),
                    JSON.stringify(data.geo),
                    JSON.stringify(data.osm_id),
                    data.settlement,
                    Math.floor(Date.now())
                ], function (err) {
                    if (err) {
                        console.error(err.message);
                        return res(false);
                    }
                    if (this.changes === 0) {
                        return res(false);
                    }

                    const houseId = this.lastID;

                    saveCards({ center: data.geo, wayId: data.osm_id, zoom: data.zoom ?? 18, type: "house", number: houseId, address: `${data.title} ${data.number}` });
                    

                    const entranceStmt = db.prepare(`
                        INSERT INTO entrance (
                            house_id, entrance_number, title, points, points_number, created_at
                        ) VALUES (?, ?, ?, ?, ?, ?)`);

                    const apartmentStmt = db.prepare(`
                        INSERT INTO apartments (
                            entrance_id, apartment_number, title, floors_number
                        ) VALUES (?, ?, ?, ?)`);

                    const entranceIdMap = {}; // Для сопоставления editor_id → entrance_id

                    let pendingEntrances = data.entrance.length;

                    data.entrance.forEach((e) => {
                        entranceStmt.run(
                            houseId,
                            Number(e.entrance_number),
                            e.title,
                            JSON.stringify(e.points),
                            JSON.stringify(e.points_number),
                            Math.floor(Date.now()),
                            function (err) {
                                if (err) {
                                    console.error(err.message);
                                    return;
                                }
                                const entranceId = this.lastID;
                                entranceIdMap[e.editor_id] = entranceId;

                                if (--pendingEntrances === 0) {
                                    insertApartments();
                                }
                            }
                        );
                    });

                    function insertApartments() {
                        for (const [editor_id, apartments] of Object.entries(data.apartments)) {
                            const entranceId = entranceIdMap[editor_id];
                            if (!entranceId) continue;

                            apartments.forEach(apartment => {
                                apartmentStmt.run(
                                    entranceId,
                                    Number(apartment.apartment_number),
                                    apartment.title,
                                    apartment.floors_number
                                );
                            });
                        }

                        entranceStmt.finalize();
                        apartmentStmt.finalize();
                        res({ "status": "ok", "id": houseId });
                    }
                });
            } else if (data.type == "homestead") {
                let sql = `
                INSERT INTO 
                    homestead(
                        group_id,
                        title,
                        number,
                        points,
                        point_icons,
                        geo,
                        osm_id,
                        settlement,
                        created_at
                    ) 
                VALUES 
                    (?, ?, ?, ?, ?, ?, ?, ?, ?)
            `;

                db.run(sql, [
                    Number(data.group_id),
                    data.title,
                    data.number,
                    JSON.stringify(data.points),
                    JSON.stringify(data.point_icons),
                    JSON.stringify(data.geo),
                    JSON.stringify(data.osm_id),
                    data.settlement,
                    Math.floor(new Date(Date.now()).getTime())
                ], function (err) {
                    if (err) {
                        console.error(err.message);
                        return res(false);
                    } else if (this.changes === 0) {
                        return res(false);
                    } else {
                        saveCards({ center: data.geo, wayId: data.osm_id, zoom: data.zoom ?? 17, type: "homestead", number: this.lastID, address: `${data.title} ${data.number}` })
                        res({ "status": "ok", "id": this.lastID });
                    }
                });
            } else {
                return res(false);
            }
        });
    }
}

module.exports = new ConstructorService();