const {
    EmbedBuilder
} = require("discord.js");

const {
    getProfileCollections
} = require("./profileSystem");

const {
    getCollections
} = require("./cookieEconomy");

const RECORDS = {
    balance: {
        label:
            "🍪 Current Balance",
        source:
            "cookies",
        field:
            "cookies",
        format:
            value =>
                `${Number(value ?? 0).toLocaleString()} 🍪`
    },
    obtained: {
        label:
            "🍪 Lifetime Cookies Obtained",
        field:
            "economy.cookiesObtainedTotal",
        format:
            value =>
                `${Number(value ?? 0).toLocaleString()} 🍪`
    },
    given: {
        label:
            "🎁 Cookies Given",
        field:
            "economy.cookiesGivenTotal",
        format:
            value =>
                `${Number(value ?? 0).toLocaleString()} 🍪`
    },
    stolen: {
        label:
            "🥷 Cookies Stolen",
        field:
            "economy.stolenTotal",
        format:
            value =>
                `${Number(value ?? 0).toLocaleString()} 🍪`
    },
    vault: {
        label:
            "🏦 Bot Vault Stolen",
        field:
            "economy.vaultStolenTotal",
        format:
            value =>
                `${Number(value ?? 0).toLocaleString()} 🍪`
    },
    wins: {
        label:
            "🏆 Games Won",
        field:
            "games.total.won",
        format:
            value =>
                Number(value ?? 0).toLocaleString()
    },
    played: {
        label:
            "🎮 Games Played",
        field:
            "games.total.played",
        format:
            value =>
                Number(value ?? 0).toLocaleString()
    },
    streak: {
        label:
            "🔥 Best Win Streak",
        field:
            "streaks.bestWin",
        format:
            value =>
                Number(value ?? 0).toLocaleString()
    },
    lost: {
        label:
            "💸 Lifetime Cookies Lost",
        field:
            "economy.cookiesLostTotal",
        format:
            value =>
                `${Number(value ?? 0).toLocaleString()} 🍪`
    }
};

function getNestedValue(
    document,
    path
) {
    return path
        .split(".")
        .reduce(
            (value, key) =>
                value?.[key],
            document
        );
}

async function buildRecordsEmbed({
    guildId,
    category,
    botUserId,
    limit = 10
}) {
    const definition =
        RECORDS[category] ??
        RECORDS.balance;

    let rows;

    if (
        definition.source ===
        "cookies"
    ) {
        const {
            cookies
        } = getCollections();

        rows =
            await cookies
                .find({
                    userId: {
                        $ne: botUserId
                    },
                    cookies: {
                        $gt: 0
                    }
                })
                .sort({
                    cookies: -1
                })
                .limit(limit)
                .toArray();
    }

    else {
        const {
            stats
        } = getProfileCollections();

        rows =
            await stats
                .find({
                    guildId,
                    userId: {
                        $ne: botUserId
                    },
                    [definition.field]: {
                        $gt: 0
                    }
                })
                .sort({
                    [definition.field]: -1
                })
                .limit(limit)
                .toArray();
    }

    const medals = [
        "🥇",
        "🥈",
        "🥉"
    ];

    const description =
        rows.length > 0
            ? rows.map(
                (row, index) => {
                    const value =
                        getNestedValue(
                            row,
                            definition.field
                        );

                    const rank =
                        medals[index] ??
                        `**${index + 1}.**`;

                    return `${rank} <@${row.userId}> — **${definition.format(value)}**`;
                }
            ).join("\n")
            : "No qualifying records yet.";

    return new EmbedBuilder()
        .setTitle(
            `📚 Records — ${definition.label}`
        )
        .setDescription(
            description
        )
        .setFooter({
            text:
                "Records are derived from persisted profile statistics."
        })
        .setTimestamp();
}

function getRecordChoices() {
    return Object.entries(RECORDS)
        .map(
            ([value, definition]) => ({
                name:
                    definition.label,
                value
            })
        );
}

module.exports = {
    buildRecordsEmbed,
    getRecordChoices
};