<?php

namespace App\Http\Controllers\Api\V1;

use App\Http\Controllers\Api\Concerns\RespondsWithJson;
use App\Http\Controllers\Controller;
use App\Services\LdapGroupService;
use App\Services\LdapUserService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use InvalidArgumentException;
use RuntimeException;
use Throwable;

class LdapUserController extends Controller
{
    use RespondsWithJson;

    public function __construct(
        private readonly LdapUserService $ldapUsers,
        private readonly LdapGroupService $ldapGroups
    ) {
    }

    public function index(Request $request): JsonResponse
    {
        $sort = $request->string('sort', 'username')->toString();
        $dir = $request->string('dir', 'asc')->toString() === 'desc' ? 'desc' : 'asc';
        $search = $request->string('q')->trim()->toString();
        $groupFilter = $request->string('group')->trim()->toString();

        $allowedSort = ['username', 'display_name', 'email', 'enabled', 'last_logon', 'groups', 'groups_count'];
        if (! in_array($sort, $allowedSort, true)) {
            $sort = 'username';
        }

        $result = $this->ldapUsers->listUsers($sort, $dir, $search, $groupFilter);

        if ($result['error'] ?? null) {
            return $this->fail($result['error'], 'service_error', 503);
        }

        return $this->ok($result['rows'], $result['meta']);
    }

    public function show(string $username): JsonResponse
    {
        try {
            return $this->ok($this->ldapUsers->getUser($username));
        } catch (InvalidArgumentException $e) {
            return $this->fail($e->getMessage(), 'not_found', 404);
        }
    }

    public function update(Request $request, string $username): JsonResponse
    {
        $data = $request->validate([
            'display_name' => ['required', 'string', 'max:255'],
            'email' => ['nullable', 'email', 'max:255'],
        ]);

        try {
            $this->ldapUsers->updateProfile($username, $data['display_name'], $data['email'] ?? null);

            return $this->ok($this->ldapUsers->getUser($username));
        } catch (InvalidArgumentException|RuntimeException $e) {
            return $this->fail($e->getMessage(), 'validation_error', 422);
        } catch (Throwable) {
            return $this->fail('Failed to update user.', 'server_error', 500);
        }
    }

    public function addToGroup(Request $request, string $username): JsonResponse
    {
        $data = $request->validate(['group' => ['required', 'string', 'max:255']]);

        try {
            $this->ldapGroups->addMember($data['group'], $username);

            return $this->ok($this->ldapUsers->getUser($username));
        } catch (InvalidArgumentException|RuntimeException $e) {
            return $this->fail($e->getMessage(), 'validation_error', 422);
        } catch (Throwable) {
            return $this->fail('Failed to add user to group.', 'server_error', 500);
        }
    }

    public function removeFromGroup(string $username, string $group): JsonResponse
    {
        try {
            $this->ldapGroups->removeMember($group, $username);

            return $this->ok($this->ldapUsers->getUser($username));
        } catch (InvalidArgumentException|RuntimeException $e) {
            return $this->fail($e->getMessage(), 'validation_error', 422);
        } catch (Throwable) {
            return $this->fail('Failed to remove user from group.', 'server_error', 500);
        }
    }
}