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

export interface BookActSummariesTable extends Record<string, SQLiteValue> {
    act_sum_id: string;
    book_id: string;
    user_id: string;
    act_index: number;
    last_update: number;
    summary: string | null;
}

export interface SyncedActSummaryResult extends Record<string, SQLiteValue> {
    act_sum_id: string;
    book_id: string;
    last_update: number;
}

export interface ActQuery extends Record<string, SQLiteValue> {
    act_index: number;
    summary: string;
}

export default class ActRepository {
    public static fetchAllActs(userId: string, bookId: string, lang: 'fr' | 'en'): ActQuery[] {
        try {
            const db: Database = System.getDb();
            return db.all('SELECT act_index, summary FROM book_act_summaries WHERE book_id=? AND user_id=?', [bookId, userId]) as ActQuery[];
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de récupérer les actes.` : `Unable to retrieve acts.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    public static updateActSummary(userId: string, bookId: string, actId: number, summary: string, lastUpdate: number, lang: 'fr' | 'en'): boolean {
        try {
            const db: Database = System.getDb();
            const result: RunResult = db.run('UPDATE book_act_summaries SET summary=?, last_update=? WHERE user_id=? AND book_id=? AND act_sum_id=?', [summary, lastUpdate, userId, bookId, actId]);
            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 résumé de l'acte.` : `Unable to update act summary.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static insertActSummary(actSummaryId: string, userId: string, bookId: string, actId: number, actSummary: string, lang: 'fr' | 'en'): string {
        let result:RunResult
        try {
            const db: Database = System.getDb();
            result = db.run('INSERT INTO book_act_summaries (act_sum_id, book_id, user_id, act_index, summary, last_update) VALUES (?,?,?,?,?,?)', [actSummaryId, bookId, userId, actId, actSummary, System.timeStampInSeconds()]);
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible d'ajouter le résumé de l'acte.` : `Unable to add act summary.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
        if (!result) {
            throw new Error(lang === 'fr' ? `Erreur lors de l'ajout du résumé de l'acte.` : `Error adding act summary.`);
        }
        return actSummaryId;
    }
    static async fetchBookActSummaries(userId: string, bookId: string, lang: 'fr' | 'en'): Promise<BookActSummariesTable[]> {
        try {
            const db: Database = System.getDb();
            return db.all('SELECT act_sum_id, book_id, user_id, act_index, summary, last_update FROM book_act_summaries WHERE user_id=? AND book_id=?', [userId, bookId]) as BookActSummariesTable[];
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de récupérer les résumés des actes.` : `Unable to retrieve act summaries.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static fetchSyncedActSummaries(userId: string, lang: 'fr' | 'en'): SyncedActSummaryResult[] {
        try {
            const db: Database = System.getDb();
            return db.all('SELECT act_sum_id, book_id, last_update FROM book_act_summaries WHERE user_id = ?', [userId]) as SyncedActSummaryResult[];
        } catch (e: unknown) {
            if (e instanceof Error) {
                console.error(`DB Error: ${e.message}`);
                throw new Error(lang === 'fr' ? `Impossible de récupérer les résumés d'actes synchronisés.` : `Unable to retrieve synced act summaries.`);
            } else {
                console.error("An unknown error occurred.");
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static insertSyncActSummary(actSumId: string, bookId: string, userId: string, actIndex: number, summary: string | null, lastUpdate: number, lang: 'fr' | 'en'): boolean {
        try {
            const db: Database = System.getDb();
            const result: RunResult = db.run(
                `INSERT INTO book_act_summaries (act_sum_id, book_id, user_id, act_index, summary, last_update) VALUES (?, ?, ?, ?, ?, ?)`,
                [actSumId, bookId, userId, actIndex, summary, 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 résumé d'acte.` : `Unable to insert act summary.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static async fetchCompleteActSummaryById(id: string, lang: "fr" | "en"):Promise<BookActSummariesTable[]> {
        try {
            const db: Database = System.getDb();
            return db.all(
                `SELECT act_sum_id, book_id, user_id, act_index, summary, last_update
                 FROM book_act_summaries
                 WHERE act_sum_id = ?`,
                [id]
            ) as BookActSummariesTable[];
        } catch (e:unknown){
            if (e instanceof Error) {
                throw new Error(lang === 'fr' ? `Impossible de récupérer le résumé d'acte complet.` : `Unable to retrieve complete act summary.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
    static actSummarizeExist(userId: string, bookId: string, act_index: number,lang: "fr" | "en"): boolean {
        try {
            const db: Database = System.getDb();
            const result:QueryResult|null = db.get('SELECT 1 FROM book_act_summaries WHERE user_id =? AND book_id =? AND act_index = ?', [userId, bookId, act_index]) || 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 résumé de l'acte.` : `Unable to check act summary existence.`);
            } else {
                throw new Error(lang === 'fr' ? "Une erreur inconnue s'est produite." : "An unknown error occurred.");
            }
        }
    }
}