<?php

declare(strict_types=1);

namespace Modules\UserManagement\Http\Controllers;

use App\Models\User;
use Illuminate\Contracts\View\View;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\Hash;
use Illuminate\Validation\Rule;

final class UserController extends Controller
{
    public function index(Request $request): View
    {
        $search = trim((string) $request->query('search', ''));

        $users = User::query()
            ->when($search !== '', static function ($query) use ($search): void {
                $query->where(static function ($query) use ($search): void {
                    $query->where('name', 'like', '%'.$search.'%')
                        ->orWhere('email', 'like', '%'.$search.'%');
                });
            })
            ->orderBy('name')
            ->paginate(20)
            ->withQueryString();

        return view('modules.user-management.index', compact('users', 'search'));
    }

    public function create(): View
    {
        return view('modules.user-management.create');
    }

    public function store(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'email' => ['required', 'email', 'max:255', 'unique:users,email'],
            'password' => ['required', 'string', 'min:8', 'confirmed'],
            'helpdesk_agent' => ['sometimes', 'boolean'],
            'helpdesk_admin' => ['sometimes', 'boolean'],
        ]);

        $user = User::query()->create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => Hash::make($data['password']),
            'email_verified_at' => now(),
            'helpdesk_agent' => $request->boolean('helpdesk_agent') || $request->boolean('helpdesk_admin'),
            'helpdesk_admin' => $request->boolean('helpdesk_admin'),
        ]);

        return redirect()->route('user-management.edit', $user)
            ->with('status', 'User created successfully.');
    }

    public function edit(User $user): View
    {
        return view('modules.user-management.edit', compact('user'));
    }

    public function update(Request $request, User $user): RedirectResponse
    {
        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'email' => ['required', 'email', 'max:255', Rule::unique('users', 'email')->ignore($user->id)],
            'password' => ['nullable', 'string', 'min:8', 'confirmed'],
            'helpdesk_agent' => ['sometimes', 'boolean'],
            'helpdesk_admin' => ['sometimes', 'boolean'],
        ]);

        $user->name = $data['name'];
        $user->email = $data['email'];
        $user->helpdesk_admin = $request->boolean('helpdesk_admin');
        $user->helpdesk_agent = $user->helpdesk_admin || $request->boolean('helpdesk_agent');

        if (filled($data['password'] ?? null)) {
            $user->password = Hash::make($data['password']);
        }

        $user->save();

        return back()->with('status', 'User updated successfully.');
    }

    public function destroy(Request $request, User $user): RedirectResponse
    {
        abort_if((int) $request->user()->id === (int) $user->id, 422, 'You cannot delete your own account.');

        if ($user->isHelpdeskAdmin() && User::query()->where('helpdesk_admin', true)->count() <= 1) {
            return back()->withErrors(['user' => 'The last Helpdesk administrator cannot be deleted.']);
        }

        $user->delete();

        return redirect()->route('user-management.index')->with('status', 'User deleted.');
    }

    public function roles(): View
    {
        $counts = [
            'admins' => User::query()->where('helpdesk_admin', true)->count(),
            'agents' => User::query()->where('helpdesk_agent', true)->count(),
            'users' => User::query()->count(),
        ];

        return view('modules.user-management.roles', compact('counts'));
    }
}