const logger = require("../modules/logger")
const database = require("../modules/database")
const { DefaultError } = require("../errors/errors")

async function insertLegacyClientSessions(sessionId, uuid) {
    try {
        await database.query(`DELETE FROM legacyClientSessions WHERE uuid = ?`, [uuid])

        const sql = `INSERT INTO legacyClientSessions (sessionId, uuid) VALUES (?, ?)`
        const result = await database.query(sql, [sessionId, uuid])

        if (result.affectedRows > 0) {
            return { code: 200, sessionId, uuid }
        } else {
            throw new DefaultError(500, "Internal Server Error", "Unknown DB Error")
        }
    } catch (error) {
        if (error instanceof DefaultError) throw error
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function validateLegacyClientSession(sessionId, uuid) {
    try {
        const sql = `SELECT * FROM legacyClientSessions WHERE sessionId = ? AND uuid = ?`
        const rows = await database.query(sql, [sessionId, uuid])
        
        const session = rows[0]
        if (session) { 
            return { 
                code: 200, 
                message: "Client session valid."
            } 
        } else {
            return { 
                code: 404, 
                message: "Client session not found for this accessToken/clientToken combination" 
            }
        }
    } catch (error) {
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function getBlockedServers() {
    try {
        const sql = `SELECT * FROM blockedServers`
        const blockedServers = await database.query(sql)

        return { 
            code: 200, 
            blockedServers: blockedServers.map(bannedServer => ({ sha1: bannedServer.hashedIp })) 
        }
    } catch (error) {
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function getActiveSkin(uuid) {
    try {
        const sql = `
            SELECT t.url, ps.variant 
            FROM playersSkins ps
            JOIN textures t ON ps.assetHash = t.hash
            WHERE ps.playerUuid = ? AND ps.isSelected = 1
        `
        const rows = await database.query(sql, [uuid])
        const skin = rows[0]
        if (!skin) {
            throw new DefaultError(404, "Not found", "Not found")
        }
        return { code: 200, data: skin || null }
    } catch (error) {
        if (error instanceof DefaultError) {
            throw error
        }
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function getActiveCape(uuid) {
    try {
        const sql = `
            SELECT t.url 
            FROM playersCapes pc
            JOIN textures t ON pc.assetHash = t.hash
            WHERE pc.playerUuid = ? AND pc.isSelected = 1
        `
        const rows = await database.query(sql, [uuid])
        const cape = rows[0]
        if (!cape) {
            throw new DefaultError(404, "Not found", "Not found")
        }
        return { code: 200, data: cape || null }
    } catch (error) {
        if (error instanceof DefaultError) {
            throw error
        }
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function getProfileActionsList(uuid) {
    try {
        const cleanUuid = uuid.replace(/-/g, "")
        const sql = "SELECT action FROM playerProfileActions WHERE uuid = ?"
        const rows = await database.query(sql, [cleanUuid])

        const actions = rows.map(row => row.action)

        return { code: 200, data: actions }
    } catch (error) {
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function saveServerSession(uuid, accessToken, serverId, ip) {
    try {
        const sql = `
            INSERT INTO serverSessions (uuid, accessToken, serverId, ip, createdAt)
            VALUES (?, ?, ?, ?, CURRENT_TIMESTAMP)
            ON DUPLICATE KEY UPDATE 
            accessToken = VALUES(accessToken),
            serverId = VALUES(serverId),
            ip = VALUES(ip),
            createdAt = CURRENT_TIMESTAMP
        `
        const result = await database.query(sql, [uuid, accessToken, serverId, ip])

        return { code: 200, success: result.affectedRows > 0 }
    } catch (error) {
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

async function getServerSession(uuid, serverId) {
    try {
        const sql = `
            SELECT ip 
            FROM serverSessions 
            WHERE uuid = ? AND serverId = ? 
            AND createdAt > (NOW() - INTERVAL 30 SECOND)
        `
        const rows = await database.query(sql, [uuid, serverId])
        const session = rows[0]

        if (!session) {
            return { code: 404, valid: false }
        }

        return { code: 200, valid: true, ip: session.ip }
    } catch (error) {
        logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
        throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
    }
}

module.exports = {
    insertLegacyClientSessions,
    validateLegacyClientSession,
    getBlockedServers,
    getActiveSkin,
    getActiveCape,
    getProfileActionsList,
    saveServerSession,
    getServerSession
}