import {Database, QueryResult, RunResult, SQLiteValue} from "node-sqlite3-wasm";
import System from "@/electron/database/System";

export interface BookPlotPointsTable extends Record<string, SQLiteValue> {
    plot_point_id: string;
    title: string;
    hashed_title: string;
    summary: string | null;
    linked_incident_id: string | null;
    author_id: string;
    book_id: string;
    last_update: number;
}

export interface SyncedPlotPointResult extends Record<string, SQLiteValue> {
    plot_point_id: string;
    book_id: string;
    title: string;
    last_update: number;
}

export interface PlotPointQuery extends Record<string, SQLiteValue> {
    plot_point_id: string;
    title: string;
    summary: string;
    linked_incident_id: string | null;
}

export default class PlotPointRepository {
    public static fetchAllPlotPoints(userId:string,bookId:string, lang: 'fr' | 'en'):PlotPointQuery[]{
        try {
            const db: Database = System.getDb();
            return db.all('SELECT plot_point_id, title, summary, linked_incident_id FROM book_plot_points WHERE author_id=? AND book_id=?', [userId, bookId]) as PlotPointQuery[];
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de récupérer les points d'intrigue.` : `Unable to retrieve plot points.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static insertNewPlotPoint(plotPointId: string, userId: string, bookId: string, encryptedName: string, hashedName: string, incidentId: string, lang: 'fr' | 'en'): string {
        let existingResult: QueryResult | null;
        let insertResult: RunResult;
        try {
            const db: Database = System.getDb();
            existingResult = db.get('SELECT plot_point_id FROM book_plot_points WHERE author_id=? AND book_id=? AND hashed_title=?', [userId, bookId, hashedName]);
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de vérifier l'existence du point d'intrigue.` : `Unable to verify plot point existence.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
        if (existingResult !== null) {
            throw new Error(lang === 'fr' ? `Ce point de l'intrigue existe déjà.` : `This plot point already exists.`);
        }
        try {
            const db: Database = System.getDb();
            insertResult = db.run('INSERT INTO book_plot_points (plot_point_id,title,hashed_title,author_id,book_id,linked_incident_id,last_update) VALUES (?,?,?,?,?,?,?)', [plotPointId, encryptedName, hashedName, userId, bookId, incidentId, System.timeStampInSeconds()]);
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible d'ajouter le point d'intrigue.` : `Unable to add plot point.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
        if (!insertResult || insertResult.changes === 0) {
            throw new Error(lang === 'fr' ? `Une erreur s'est produite lors de l'ajout du point d'intrigue.` : `Error adding plot point.`);
        }
        return plotPointId;
    }
    
    static deletePlotPoint(userId: string, plotNumId: string, lang: 'fr' | 'en'): boolean {
        try {
            const db: Database = System.getDb();
            const result: RunResult = db.run('DELETE FROM book_plot_points WHERE author_id=? AND plot_point_id=?', [userId, plotNumId]);
            return result.changes > 0;
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de supprimer le point d'intrigue.` : `Unable to delete plot point.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    public static updatePlotPoint(userId: string, bookId: string, plotPointId: string, encryptedPlotPointName: string, plotPointHashedName: string, plotPointSummary: string, lastUpdate:number, lang: 'fr' | 'en'): boolean {
        try {
            const db: Database = System.getDb();
            const result: RunResult = db.run('UPDATE book_plot_points SET title=?, hashed_title=?, summary=?, last_update=? WHERE author_id=? AND book_id=? AND plot_point_id=?', [encryptedPlotPointName, plotPointHashedName, plotPointSummary, lastUpdate, userId, bookId, plotPointId]);
            return result.changes > 0;
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de mettre à jour le point d'intrigue.` : `Unable to update plot point.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static async fetchBookPlotPoints(userId: string, bookId: string, lang: 'fr' | 'en'): Promise<BookPlotPointsTable[]> {
        try {
            const db: Database = System.getDb();
            return db.all('SELECT plot_point_id, title, hashed_title, summary, linked_incident_id, author_id, book_id, last_update FROM book_plot_points WHERE author_id=? AND book_id=?', [userId, bookId]) as BookPlotPointsTable[];
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de récupérer les points d'intrigue.` : `Unable to retrieve plot points.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static fetchSyncedPlotPoints(userId: string, lang: 'fr' | 'en'): SyncedPlotPointResult[] {
        try {
            const db: Database = System.getDb();
            return db.all('SELECT plot_point_id, book_id, title, last_update FROM book_plot_points WHERE author_id = ?', [userId]) as SyncedPlotPointResult[];
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de récupérer les points d'intrigue synchronisés.` : `Unable to retrieve synced plot points.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static insertSyncPlotPoint(plotPointId: string, title: string, hashedTitle: string, summary: string | null, linkedIncidentId: string | null, authorId: string, bookId: string, lastUpdate: number, lang: 'fr' | 'en'): boolean {
        try {
            const db: Database = System.getDb();
            const result: RunResult = db.run(
                `INSERT INTO book_plot_points (plot_point_id, title, hashed_title, summary, linked_incident_id, author_id, book_id, last_update)
                 VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
                [plotPointId, title, hashedTitle, summary, linkedIncidentId, authorId, bookId, lastUpdate]
            );
            return result.changes > 0;
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible d'insérer le point d'intrigue.` : `Unable to insert plot point.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static async fetchCompletePlotPointById(id: string, lang: "fr" | "en"):Promise<BookPlotPointsTable[]> {
        try {
            const db: Database = System.getDb();
            return db.all(
                `SELECT plot_point_id, title, hashed_title, summary, linked_incident_id, author_id, book_id, last_update
                 FROM book_plot_points
                 WHERE plot_point_id = ?`,
                [id]
            ) as BookPlotPointsTable[];
        } catch (e:unknown){
            if (e instanceof Error) {
                throw new Error(lang === 'fr' ? `Impossible de récupérer le point d'intrigue complet.` : `Unable to retrieve complete plot point.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static plotPointExist(userId: string, bookId: string, plot_point_id: string,lang: "fr" | "en"): boolean {
        try {
            const db: Database = System.getDb();
            const result:QueryResult|null = db.get('SELECT 1 FROM book_plot_points WHERE author_id =? AND book_id =? AND plot_point_id =?', [userId, bookId, plot_point_id]) || null;
            return result !== null;
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de vérifier l'existence du point de intrigue.` : `Unable to check plot point existence.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
}