#!/usr/bin/env node

import {
    addUser,
    removeUser,
    listUsers,
    regenerateApiKey,
    setUserEnabled
} from './users.js';

const command = process.argv[2];
const args = process.argv.slice(3);

function printUsage() {
    console.log(`
PicUpper User Management CLI

Usage: node manage-users.js <command> [options]

Commands:
  add <username> [description]   Add a new user and generate API key
  remove <username>              Remove a user
  list                           List all users
  regenerate <username>          Regenerate API key for a user
  enable <username>              Enable a user
  disable <username>             Disable a user

Examples:
  node manage-users.js add webcam1 "Front door camera"
  node manage-users.js add backyard "Backyard camera"
  node manage-users.js list
  node manage-users.js regenerate webcam1
  node manage-users.js disable webcam1
`);
}

try {
    switch (command) {
        case 'add': {
            const username = args[0];
            const description = args.slice(1).join(' ') || '';

            if (!username) {
                console.error('Error: Username is required');
                printUsage();
                process.exit(1);
            }

            const apiKey = addUser(username, description);
            console.log(`\nUser '${username}' created successfully!`);
            console.log(`\nAPI Key (save this, it won't be shown again):`);
            console.log(`\n  ${apiKey}\n`);
            break;
        }

        case 'remove': {
            const username = args[0];

            if (!username) {
                console.error('Error: Username is required');
                process.exit(1);
            }

            removeUser(username);
            console.log(`User '${username}' removed successfully.`);
            break;
        }

        case 'list': {
            const users = listUsers();

            if (users.length === 0) {
                console.log('No users found. Use "add" command to create one.');
                break;
            }

            console.log('\nRegistered Users:');
            console.log('─'.repeat(80));

            for (const user of users) {
                const status = user.enabled ? '✓ enabled' : '✗ disabled';
                console.log(`  ${user.username}`);
                console.log(`    Key: ${user.keyPreview}`);
                console.log(`    Status: ${status}`);
                if (user.description) {
                    console.log(`    Description: ${user.description}`);
                }
                console.log(`    Created: ${user.createdAt}`);
                console.log('');
            }
            break;
        }

        case 'regenerate': {
            const username = args[0];

            if (!username) {
                console.error('Error: Username is required');
                process.exit(1);
            }

            const newApiKey = regenerateApiKey(username);
            console.log(`\nAPI key regenerated for '${username}'!`);
            console.log(`\nNew API Key (save this, it won't be shown again):`);
            console.log(`\n  ${newApiKey}\n`);
            break;
        }

        case 'enable': {
            const username = args[0];

            if (!username) {
                console.error('Error: Username is required');
                process.exit(1);
            }

            setUserEnabled(username, true);
            console.log(`User '${username}' enabled.`);
            break;
        }

        case 'disable': {
            const username = args[0];

            if (!username) {
                console.error('Error: Username is required');
                process.exit(1);
            }

            setUserEnabled(username, false);
            console.log(`User '${username}' disabled.`);
            break;
        }

        case 'help':
        case '--help':
        case '-h':
        case undefined:
            printUsage();
            break;

        default:
            console.error(`Unknown command: ${command}`);
            printUsage();
            process.exit(1);
    }
} catch (error) {
    console.error(`Error: ${error.message}`);
    process.exit(1);
}