<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use App\Models\User;

class CleanupReadingHistories extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'cleanup:histories
                            {userIds?* : The user ID(s) to clean up (use "all" to clean up for all users)}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Clean up duplicate reading histories for specified or all users';

    /**
     * Execute the console command.
     *
     * @return int
     */
    public function handle()
    {
        $userIds = $this->argument('userIds');

        if (empty($userIds)) {
            $this->error('You must specify user IDs or "all".');
            return 1;
        }

        // Handle "all" case
        if ($userIds === ['all']) {
            $users = User::all();
            foreach ($users as $user) {
                $this->cleanUpForUser($user);
            }
        } else {
            // Ensure user IDs are unique
            $uniqueUserIds = array_unique($userIds);

            foreach ($uniqueUserIds as $userId) {
                $user = User::find($userId);
                if ($user) {
                    $this->cleanUpForUser($user);
                } else {
                    $this->error("User with ID {$userId} not found.");
                }
            }
        }

        $this->info('Cleanup completed successfully.');
        return 0;
    }

    /**
     * Clean up duplicate reading histories for a single user.
     *
     * @param \App\Models\User $user
     * @return void
     */
    protected function cleanUpForUser(User $user): void
    {
        $result = $user->cleanUpReadingHistories();

        $keptIds = $result['kept_ids']->toArray(); // Convert Collection to array

        $this->info("User ID {$result['user_id']} - Kept IDs: " . implode(', ', $keptIds) . " - Deleted: {$result['deleted_count']} records.");
    }
}