#!/usr/bin/env ts-node

import BringApi from 'bring-shopping';

interface Credentials {
    mail: string;
    password: string;
}

interface BringItem {
    name: string;
    specification: string;
}

interface BringItems {
    uuid: string;
    status: string;
    purchase: BringItem[];
    recently: BringItem[];
}

// Load credentials from environment variables
const CREDENTIALS: Credentials = {
    mail: process.env.BRING_EMAIL || '',
    password: process.env.BRING_PASSWORD || ''
};

const LIST_UUID: string = process.env.BRING_LIST_UUID || '';

// Validate required environment variables
if (!CREDENTIALS.mail || !CREDENTIALS.password || !LIST_UUID) {
    console.error('Error: Missing required environment variables');
    console.error('Please set: BRING_EMAIL, BRING_PASSWORD, BRING_LIST_UUID');
    console.error('See SKILL.md for setup instructions');
    process.exit(1);
}

async function main(): Promise<void> {
    const args: string[] = process.argv.slice(2);
    const command: string | undefined = args[0];

    if (!command) {
        console.error('Usage: bring <add|list|remove|recent> [args...]');
        process.exit(1);
    }

    const bring = new BringApi(CREDENTIALS);

    try {
        await bring.login();

        switch (command) {
            case 'add':
                await addItem(bring, args.slice(1));
                break;
            case 'list':
                await listItems(bring);
                break;
            case 'remove':
                await removeItem(bring, args.slice(1));
                break;
            case 'recent':
                await recentItems(bring);
                break;
            default:
                console.error(`Unknown command: ${command}`);
                console.error('Available commands: add, list, remove, recent');
                process.exit(1);
        }
    } catch (error) {
        const errorMessage = error instanceof Error ? error.message : 'Unknown error';
        console.error('Error:', errorMessage);
        process.exit(1);
    }
}

/**
 * Add an item to the shopping list
 */
async function addItem(bring: any, args: string[]): Promise<void> {
    const itemName: string | undefined = args[0];
    const specification: string = args.slice(1).join(' ') || '';

    if (!itemName) {
        console.error('Usage: bring add <item> [specification]');
        process.exit(1);
    }

    await bring.saveItem(LIST_UUID, itemName, specification);

    if (specification) {
        console.log(`✓ "${itemName}" (${specification}) added to shopping list`);
    } else {
        console.log(`✓ "${itemName}" added to shopping list`);
    }
}

/**
 * List all items currently on the shopping list
 */
async function listItems(bring: any): Promise<void> {
    const items: BringItems = await bring.getItems(LIST_UUID);

    if (items.purchase.length === 0) {
        console.log('Shopping list is empty');
        return;
    }

    console.log('Shopping list:');
    console.log('');
    items.purchase.forEach((item: BringItem, index: number) => {
        if (item.specification) {
            console.log(`${index + 1}. ${item.name} (${item.specification})`);
        } else {
            console.log(`${index + 1}. ${item.name}`);
        }
    });
}

/**
 * Remove an item from the shopping list (mark as purchased)
 */
async function removeItem(bring: any, args: string[]): Promise<void> {
    const itemName: string = args.join(' ');

    if (!itemName) {
        console.error('Usage: bring remove <item>');
        process.exit(1);
    }

    await bring.removeItem(LIST_UUID, itemName);
    console.log(`✓ "${itemName}" removed from shopping list`);
}

/**
 * Show recently purchased items
 */
async function recentItems(bring: any): Promise<void> {
    const items: BringItems = await bring.getItems(LIST_UUID);

    if (items.recently.length === 0) {
        console.log('No recently purchased items');
        return;
    }

    console.log('Recently purchased:');
    console.log('');
    items.recently.slice(0, 10).forEach((item: BringItem, index: number) => {
        if (item.specification) {
            console.log(`${index + 1}. ${item.name} (${item.specification})`);
        } else {
            console.log(`${index + 1}. ${item.name}`);
        }
    });
}

main();