<?php

namespace App\Http\Controllers\Management;

use App\Http\Controllers\Controller;
use App\Models\User;
use App\Services\UserHierarchyService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;
use Illuminate\Validation\Rule;
use Inertia\Inertia;
use Inertia\Response;
use Spatie\Permission\Models\Role;

class UserController extends Controller
{
    public function __construct(private UserHierarchyService $hierarchyService)
    {
    }

    // public function __construct()
    // {
    //     $this->middleware('auth:web');
    // }

    public function index(): Response
    {
        $users = User::with(['roles', 'manager'])->get();
        $roles = Role::all();

        return Inertia::render('management/users/index', [
            'users' => $users,
            'roles' => $roles,
        ]);
    }

    public function create(): Response
    {
        $roles = Role::all();
        $managers = $this->managerOptions();

        return Inertia::render('management/users/create', [
            'roles' => $roles,
            'managers' => $managers,
        ]);
    }

    public function store(Request $request): RedirectResponse
    {
        $request->validate([
            'name' => ['required', 'string'],
            'email' => ['required', 'email', 'unique:users,email'],
            'password' => ['required', 'string', 'min:8'],
            'manager_id' => ['nullable', 'integer', 'exists:users,id'],
            'roles' => ['required', 'array'],
            'roles.*' => ['required', 'string'],
        ]);

        $user = User::create([
            'name' => $request->name,
            'email' => $request->email,
            'password' => Hash::make($request->password),
            'manager_id' => $request->manager_id,
        ]);
        $user->syncRoles($request->roles);

        return redirect()
            ->route('management.users.index')
            ->with('message-info', 'User ' . $user->name . ' has created successfully.');
    }

    public function edit(int $id): Response
    {
        $user = User::with(['roles', 'manager'])->findOrFail($id);
        $roles = Role::all();
        $managers = $this->managerOptions($user->id);

        return Inertia::render('management/users/edit', [
            'user' => $user,
            'roles' => $roles,
            'managers' => $managers,
        ]);
    }

    public function update(int $id, Request $request): RedirectResponse
    {
        $user = User::findOrFail($id);
        $request->validate([
            'name' => ['required', 'string'],
            'email' => ['required', 'email', 'unique:users,email,' . $user->id],
            'password' => ['nullable', 'string', 'min:8'],
            'manager_id' => [
                'nullable',
                'integer',
                Rule::exists('users', 'id')->where(fn ($query) => $query->where('id', '!=', $user->id)),
            ],
            'roles' => ['required', 'array'],
            'roles.*' => ['required', 'string'],
        ]);

        if ($this->hierarchyService->wouldCreateCycle($user, $request->integer('manager_id') ?: null)) {
            return redirect()
                ->back()
                ->withInput()
                ->withErrors(['manager_id' => 'A user cannot report to themselves or one of their reports.']);
        }

        $user->name = $request->name;
        $user->email = $request->email;
        $user->manager_id = $request->manager_id;
        if ($request->password !== null) {
            $user->password = Hash::make($request->password);
        }
        $user->save();
        $user->syncRoles($request->roles);

        return redirect()
            ->route('management.users.index')
            ->with('message-info', 'User ' . $user->name . ' has updated successfully.');
    }

    public function destroy(int $id): RedirectResponse
    {
        $user = User::findOrFail($id);

        if ($user->id === 1) {
            return redirect()
                ->route('management.users.index')
                ->with('message-error', 'User ' . $user->name . ' cannot be delete.');
        }

        $user->delete();

        return redirect()
            ->route('management.users.index')
            ->with('message-info', 'User ' . $user->name . ' has deleted successfully.');
    }

    private function managerOptions(?int $excludedUserId = null): array
    {
        return User::query()
            ->when($excludedUserId !== null, fn ($query) => $query->where('id', '!=', $excludedUserId))
            ->orderBy('name')
            ->get(['id', 'name', 'email'])
            ->map(fn (User $user) => [
                'value' => (string) $user->id,
                'label' => trim($user->name . ' (' . $user->email . ')'),
            ])
            ->all();
    }
}