const connection = require('./connection');
const parseText = require('./parseText');
const {del} = require("express/lib/application");

async function getAllGames(parameters = {}) {
    let selectSql = `SELECT
                   m.id AS appID,
                   m.game_title AS title,
                   d.name AS developer,
                   p.name AS publisher,
                   m.release_date AS releaseDate,
                   m.short_description AS summary,
                   m.win_supported AS win,
                   m.mac_supported AS mac,
                   m.linux_supported AS linux,
                   m.cover_art_filename AS coverArt
                   FROM games_master_table m
                   INNER JOIN developers d ON m.developer_id = d.id
                   INNER JOIN publishers p ON m.publisher_id = p.id`,
        whereStatements = [],
        orderByStatements = [],
        queryParameters = [];

    if (typeof parameters.win !== 'undefined' && parseInt(parameters.win) === 1) {
        whereStatements.push("m.win_supported = 1");
    }

    if (typeof parameters.mac !== 'undefined' && parseInt(parameters.mac) === 1) {
        whereStatements.push("m.mac_supported = 1");
    }

    if (typeof parameters.linux !== 'undefined' && parseInt(parameters.linux) === 1) {
        whereStatements.push("m.linux_supported = 1");
    }

    if (typeof parameters.appID !== 'undefined' && parameters.appID.length > 0) {
        const appID = parameters.appID;
        whereStatements.push("m.id LIKE ?");
        queryParameters.push('%' + appID + '%');
    }

    if (typeof parameters.title !== 'undefined' && parameters.title.length > 0) {
        const title = parameters.title;
        whereStatements.push("m.game_title LIKE ?");
        queryParameters.push('%' + title + '%');
    }

    if (typeof parameters.developer !== 'undefined' && parameters.developer.length > 0) {
        const developer = parameters.developer;
        whereStatements.push("d.name LIKE ?");
        queryParameters.push('%' + developer + '%');
    }

    if (typeof parameters.publisher !== 'undefined' && parameters.publisher.length > 0) {
        const publisher = parameters.publisher;
        whereStatements.push("p.name LIKE ?");
        queryParameters.push('%' + publisher + '%');
    }

    if (typeof parameters.releaseDate !== 'undefined' && parameters.releaseDate.length > 0) {
        const releaseDate = parameters.releaseDate;
        whereStatements.push("m.release_date LIKE ?");
        queryParameters.push('%' + releaseDate + '%');
    }

    if (typeof parameters.orderBy !== 'undefined') {
        const sort = parameters.orderBy;
        if (sort === 'ASC') {
            orderByStatements.push('m.id ASC');
        } else if (sort === 'DESC') {
            orderByStatements.push('m.id DESC')
        }
    }

    //Dynamically add WHERE expressions to SELECT statements if needed
    if (whereStatements.length > 0) {
        selectSql = selectSql + ' WHERE ' + whereStatements.join(' AND ');
    }

    //Dynamically add ORDER BY expressions to SELECT statements if needed
    if (orderByStatements.length > 0) {
        selectSql = selectSql + ' ORDER BY ' + orderByStatements.join(', ');
    }

    //Dynamically add ORDER BY expressions to SELECT statements if needed
    if (typeof parameters.limitNumber !== 'undefined' && parameters.limitNumber > 0 && parameters.limitNumber < 6) {
        selectSql = selectSql + ' LIMIT ' + parameters.limitNumber;
    }

    return await connection.query(selectSql, queryParameters);
}

async function getGame(id) {
    let selectSql = `SELECT
                   m.id AS appID,
                   m.game_title AS title,
                   d.name AS developer,
                   p.name AS publisher,
                   m.release_date AS releaseDate,
                   m.short_description AS summary,
                   m.long_description AS longDescription,
                   m.win_supported AS win,
                   m.mac_supported AS mac,
                   m.linux_supported AS linux,
                   m.cover_art_filename AS coverArt,
                   m.short_description AS shortDescription,
                   m.long_description_markdown AS longDescription
                   FROM games_master_table m
                   INNER JOIN developers d ON m.developer_id = d.id
                   INNER JOIN publishers p ON m.publisher_id = p.id`,
        whereStatements = [],
        queryParameters = [];

    if (typeof id !== 'undefined' && id.length > 0) {
        whereStatements.push("m.id LIKE ?");
        queryParameters.push('%' + id + '%');
    }

    //Dynamically add WHERE expressions to SELECT statements if needed
    if (whereStatements.length > 0) {
        selectSql = selectSql + ' WHERE ' + whereStatements.join(' AND ');
    }

    return await connection.query(selectSql, queryParameters);
}

async function addNewGame(formInput, imagePath) {

    console.log("Image: " + imagePath);

    let parsedDescription = await parseText.parseMarkdown(formInput.longDescription);

    let insertSql = `INSERT INTO games_master_table (game_title, developer_id, publisher_id, release_date, 
                                                            win_supported, mac_supported, linux_supported,
                                                            short_description, long_description, long_description_markdown, cover_art_filename) VALUES
                                                            (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`;
    let queryParameters = [formInput.title,
        formInput.developerID,
        formInput.publisherID,
        formInput.releaseDate,
        formInput.win,
        formInput.mac,
        formInput.linux,
        formInput.shortDescription,
        parsedDescription,
        formInput.longDescription,
        imagePath];

    return await connection.query(insertSql, queryParameters);
}

async function editGame(id, formInput, imagePath) {

    console.log("Image: " + imagePath);

    let updateSql = `UPDATE games_master_table 
                            SET game_title = ?,
                            developer_id = ?,
                            publisher_id = ?,
                            release_date = ?,
                            win_supported = ?,
                            mac_supported = ?,
                            linux_supported = ?,
                            short_description = ?,
                            long_description = ?,
                            long_description_markdown = ?,
                            cover_art_filename = ?
                            WHERE id =` + id;

    console.log(updateSql);

    let parsedDescription = await parseText.parseMarkdown(formInput.longDescription);


    let queryParameters = [formInput.title,
        formInput.developerID,
        formInput.publisherID,
        formInput.releaseDate,
        formInput.win,
        formInput.mac,
        formInput.linux,
        formInput.shortDescription,
        parsedDescription,
        formInput.longDescription,
        imagePath];

    return await connection.query(updateSql, queryParameters);
}

async function deleteGame(id) {

    let deleteSql = `DELETE FROM games_master_table 
                            WHERE id =` + id;

    console.log(deleteSql);

    return await connection.query(deleteSql);
}

module.exports = {
    getAllGames,
    getGame,
    addNewGame,
    editGame,
    deleteGame
}