import { createCommand } from "@/lib/utils";
import { SlashCommandBuilder, EmbedBuilder, ChannelType, ActionRowBuilder, ButtonBuilder, ButtonStyle, ThreadAutoArchiveDuration } from "discord.js";
import { TradeService } from "@/modules/trade/trade.service";
import { updateTradeDashboard } from "@/modules/trade/trade.interaction";
import { createErrorEmbed, createWarningEmbed } from "@lib/embeds";

export const trade = createCommand({
    data: new SlashCommandBuilder()
        .setName("trade")
        .setDescription("Start a trade with another player")
        .addUserOption(option =>
            option.setName("user")
                .setDescription("The user to trade with")
                .setRequired(true)
        ),
    execute: async (interaction) => {
        const targetUser = interaction.options.getUser("user", true);

        if (targetUser.id === interaction.user.id) {
            await interaction.reply({ embeds: [createWarningEmbed("You cannot trade with yourself.")], ephemeral: true });
            return;
        }

        if (targetUser.bot) {
            await interaction.reply({ embeds: [createWarningEmbed("You cannot trade with bots.")], ephemeral: true });
            return;
        }

        // Create Thread
        const channel = interaction.channel;
        if (!channel || channel.type === ChannelType.DM) {
            await interaction.reply({ embeds: [createErrorEmbed("Cannot start trade in DMs.")], ephemeral: true });
            return;
        }

        // Check if we can create threads
        // Assuming permissions are fine.

        await interaction.reply({ content: `🔄 Setting up trade with ${targetUser}...` });
        const message = await interaction.fetchReply();

        let thread;
        try {
            thread = await message.startThread({
                name: `trade-${interaction.user.username}-${targetUser.username}`,
                autoArchiveDuration: ThreadAutoArchiveDuration.OneHour,
                reason: "Trading Session"
            });
        } catch (e) {
            // Fallback if message threads fail, try channel threads (private preferred)
            // But startThread on message is usually easiest.
            await interaction.editReply({ content: "", embeds: [createErrorEmbed("Failed to create trade thread. Check permissions.")] });
            return;
        }

        // Setup Session
        TradeService.createSession(thread.id,
            { id: interaction.user.id, username: interaction.user.username },
            { id: targetUser.id, username: targetUser.username }
        );

        // Send Dashboard to Thread
        const embed = new EmbedBuilder()
            .setTitle("🤝 Trading Session")
            .setDescription(`Trade started between ${interaction.user} and ${targetUser}.\nUse the controls below to build your offer.`)
            .setColor(0xFFD700)
            .addFields(
                { name: interaction.user.username, value: "*Empty Offer*", inline: true },
                { name: targetUser.username, value: "*Empty Offer*", inline: true }
            )
            .setFooter({ text: "Both parties must click Lock to confirm trade." });

        const row = new ActionRowBuilder<ButtonBuilder>()
            .addComponents(
                new ButtonBuilder().setCustomId('trade_add_item').setLabel('Add Item').setStyle(ButtonStyle.Secondary),
                new ButtonBuilder().setCustomId('trade_add_money').setLabel('Add Money').setStyle(ButtonStyle.Success),
                new ButtonBuilder().setCustomId('trade_remove_item').setLabel('Remove Item').setStyle(ButtonStyle.Secondary),
                new ButtonBuilder().setCustomId('trade_lock').setLabel('Lock / Unlock').setStyle(ButtonStyle.Primary),
                new ButtonBuilder().setCustomId('trade_cancel').setLabel('Cancel').setStyle(ButtonStyle.Danger),
            );

        await thread.send({ content: `${interaction.user} ${targetUser} Welcome to your trading session!`, embeds: [embed], components: [row] });

        // Update original reply
        await interaction.editReply({ content: `✅ Trade opened: <#${thread.id}>` });
    }
});