<?php

namespace App\Http\Controllers;

use App\Models\User;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Illuminate\View\View;
use RealRashid\SweetAlert\Facades\Alert;

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

        $users = User::query()
            ->when($search !== '', function ($query) use ($search) {
                $query->where(function ($subQuery) use ($search) {
                    $subQuery->where('name', 'like', "%{$search}%")
                        ->orWhere('email', 'like', "%{$search}%");
                });
            })
            ->orderBy('name')
            ->paginate(10)
            ->withQueryString();

        return view('users.index', [
            'users' => $users,
            'search' => $search,
            'roleOptions' => $this->roleOptions(),
        ]);
    }

    public function create(): View
    {
        return view('users.create', [
            'roleOptions' => $this->roleOptions(),
        ]);
    }

    public function store(Request $request): RedirectResponse
    {
        $data = $this->validateUser($request);

        User::create($data);

        Alert::success('Berhasil', 'Akun pengguna berhasil ditambahkan.');

        return redirect()->route('settings.users.index')->with('success', 'Akun pengguna berhasil ditambahkan.');
    }

    public function edit(User $user): View
    {
        return view('users.edit', [
            'user' => $user,
            'roleOptions' => $this->roleOptions(),
        ]);
    }

    public function update(Request $request, User $user): RedirectResponse
    {
        $data = $this->validateUser($request, $user);

        if (blank($data['password'] ?? null)) {
            unset($data['password']);
        }

        $user->update($data);

        Alert::success('Berhasil', 'Akun pengguna berhasil diperbarui.');

        return redirect()->route('settings.users.index')->with('success', 'Akun pengguna berhasil diperbarui.');
    }

    public function destroy(Request $request, User $user): RedirectResponse
    {
        if ((int) $request->user()->id === (int) $user->id) {
            return back()->withErrors(['user' => 'Akun yang sedang dipakai login tidak bisa dihapus.']);
        }

        if (User::query()->where('role', 'admin')->count() <= 1 && $user->role === 'admin') {
            return back()->withErrors(['user' => 'Minimal harus ada satu akun admin aktif di sistem.']);
        }

        $user->delete();

        Alert::success('Berhasil', 'Akun pengguna berhasil dihapus.');

        return redirect()->route('settings.users.index')->with('success', 'Akun pengguna berhasil dihapus.');
    }

    protected function validateUser(Request $request, ?User $user = null): array
    {
        $passwordRules = $user
            ? ['nullable', 'string', 'min:8', 'confirmed']
            : ['required', 'string', 'min:8', 'confirmed'];

        return $request->validate([
            'name' => ['required', 'string', 'max:100'],
            'email' => ['required', 'email', 'max:150', Rule::unique('users', 'email')->ignore($user?->id)],
            'role' => ['required', Rule::in(array_keys($this->roleOptions()))],
            'password' => $passwordRules,
        ]);
    }

    protected function roleOptions(): array
    {
        return [
            'admin' => 'Administrator',
            'staff' => 'Staff',
        ];
    }
}