discord-rpg-concept/src/commands/economy/pay.ts

import { createCommand } from "@lib/utils";
import { getUserBalance, setUserBalance } from "@/modules/economy/economy.service";
import { createUser, getUserById } from "@/modules/users/users.service";
import { SlashCommandBuilder, EmbedBuilder, PermissionFlagsBits } from "discord.js";

export const pay = createCommand({
    data: new SlashCommandBuilder()
        .setName("pay")
        .setDescription("Send balance to another user")
        .addUserOption(option =>
            option.setName('recipient')
                .setDescription('The user to send balance to')
                .setRequired(true))
        .addIntegerOption(option =>
            option.setName('amount')
                .setDescription('The amount of balance to send')
                .setRequired(true))


    , execute: async (interaction) => {
        const user = interaction.user;
        // Ensure if your user exists in DB
        let dbUser = await getUserById(user.id);
        if (!dbUser) {
            await createUser(user.id);
        }

        const balance = await getUserBalance(user.id);
        const recipient = interaction.options.getUser('recipient');
        const amount = interaction.options.getInteger('amount');

        if (amount! <= 0) {
            await interaction.reply({ content: "❌ Amount must be greater than zero.", ephemeral: true });
            return;
        }
        if (amount! > balance) {
            await interaction.reply({ content: "❌ You do not have enough coins to complete this transaction.", ephemeral: true });
            return;
        }

        if (recipient!.id === user.id) {
            await interaction.reply({ content: "❌ You cannot send coins to yourself.", ephemeral: true });
            return;
        }

        // Ensure recipient exists in DB
        let dbRecipient = await getUserById(recipient!.id);
        if (!dbRecipient) {
            dbRecipient = await createUser(recipient!.id);
        }

        await setUserBalance(user.id, balance - amount!); // Deduct from sender
        await setUserBalance(recipient!.id, (await getUserBalance(recipient!.id)) + amount!); // Add to recipient

        const embed = new EmbedBuilder()
            .setDescription(`sent **${amount} coins** to ${recipient!.username}`)
            .setColor("Green");

        await interaction.reply({ embeds: [embed] });
    }
});