<?php

namespace App\Http\Controllers\Web\Konfigurasi;

use App\Http\Controllers\Controller;
use App\Models\User;
use App\Models\Profile;
use App\Models\Pertanian\Lahan;
use App\Models\Pertanian\Komoditas;
use App\Models\Pertanian\Tanaman;
use App\Models\Wilayah\DesaKelurahan;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\Validator;

class ProfileController extends Controller
{
    public function index()
    {
        $user = auth()->user();
        $profile = Profile::where('user_id', $user->id)->first();

        $profileId = $profile?->id;
        $jumlahLahan = $profileId ? Lahan::where('profile_id', $profileId)->count() : 0;
        $totalLuasLahan = $profileId ? Lahan::where('profile_id', $profileId)->sum('luas_lahan') : 0;
        $jumlahTanaman = $profileId ? Tanaman::where('profile_id', $profileId)->count() : 0;
        $jumlahKomoditas = $profileId
            ? Tanaman::where('profile_id', $profileId)->whereNotNull('komoditas_id')->distinct('komoditas_id')->count('komoditas_id')
            : 0;
        $problemSummary = $this->getProblemSummary();

        $activities = $this->getProfileActivities($user, $profile);

        $title = 'Profile';
        return view('konfigurasi.profile.index', compact('title', 'profile', 'jumlahKomoditas', 'jumlahLahan', 'totalLuasLahan', 'jumlahTanaman', 'activities', 'problemSummary'));
    }

    public function security()
    {
        $user = auth()->user();
        $profile = Profile::where('user_id', $user->id)->first();
        $loginSessions = $this->getLoginSessions($user);
        $title = 'Keamanan Akun';

        return view('konfigurasi.profile.security', compact('title', 'profile', 'loginSessions'));
    }

    public function activities()
    {
        $user = auth()->user();
        $profile = Profile::where('user_id', $user->id)->first();

        return response()->json([
            'activities' => $this->getProfileActivities($user, $profile)->values(),
        ]);
    }

    public function updatePassword(Request $request)
    {
        $request->validate([
            'current_password' => ['required', 'current_password'],
            'password' => ['required', 'string', 'min:8', 'confirmed'],
        ], [
            'current_password.current_password' => 'Password saat ini tidak sesuai.',
            'password.confirmed' => 'Konfirmasi password baru tidak cocok.',
            'password.min' => 'Password baru minimal 8 karakter.',
        ]);

        $request->user()->update([
            'password' => Hash::make($request->password),
        ]);

        return back()->with('security_success', 'Password berhasil diperbarui.');
    }

    public function logoutDevices(Request $request)
    {
        if (Schema::hasTable('sessions')) {
            DB::table('sessions')
                ->where('user_id', $request->user()->id)
                ->delete();
        }

        Auth::logout();

        $request->session()->invalidate();
        $request->session()->regenerateToken();

        return redirect()->route('login')->with('success', 'Berhasil logout dari semua perangkat.');
    }

    private function getLoginSessions(User $user)
    {
        if (!Schema::hasTable('sessions')) {
            return collect();
        }

        return DB::table('sessions')
            ->where('user_id', $user->id)
            ->orderByDesc('last_activity')
            ->limit(5)
            ->get()
            ->map(function ($session) {
                return (object) [
                    'id' => $session->id,
                    'ip_address' => $session->ip_address,
                    'user_agent' => $session->user_agent,
                    'last_activity' => \Carbon\Carbon::createFromTimestamp($session->last_activity),
                    'is_current' => $session->id === session()->getId(),
                ];
            });
    }

    private function getProblemSummary(): array
    {
        return [
            [
                'label' => 'User belum diverifikasi',
                'count' => User::whereNull('email_verified_at')->count(),
                'icon' => 'tabler-user-exclamation',
                'color' => 'warning',
                'url' => route('users.index', ['tab' => 'pending']),
            ],
            [
                'label' => 'Profile tanpa user',
                'count' => Profile::whereNull('user_id')
                    ->orWhereDoesntHave('user')
                    ->count(),
                'icon' => 'tabler-id-off',
                'color' => 'danger',
                'url' => route('profile.index'),
            ],
            [
                'label' => 'Lahan tanpa luas',
                'count' => Lahan::whereNull('luas_lahan')
                    ->orWhere('luas_lahan', '<=', 0)
                    ->count(),
                'icon' => 'tabler-map-off',
                'color' => 'warning',
                'url' => route('lahan.index'),
            ],
            [
                'label' => 'Tanaman tanpa komoditas',
                'count' => Tanaman::whereNull('komoditas_id')->count(),
                'icon' => 'tabler-plant-off',
                'color' => 'warning',
                'url' => route('tanaman.index'),
            ],
            [
                'label' => 'Wilayah/desa tidak lengkap',
                'count' => DesaKelurahan::withoutGlobalScopes()
                    ->where(function (Builder $query) {
                        $query->whereNull('kode')
                            ->orWhere('kode', '')
                            ->orWhereNull('nama')
                            ->orWhere('nama', '')
                            ->orWhereNull('kecamatan_id')
                            ->orWhereNull('path');
                    })
                    ->count(),
                'icon' => 'tabler-map-pin-exclamation',
                'color' => 'info',
                'url' => route('desakelurahan.index'),
            ],
        ];
    }

    private function getProfileActivities(User $user, ?Profile $profile, int $limit = 20)
    {
        $sources = [
            ['model' => Profile::class, 'label' => 'Profil', 'name' => 'nama', 'profile_field' => null],
            ['model' => Lahan::class, 'label' => 'Lahan', 'name' => 'nama', 'profile_field' => 'profile_id'],
            ['model' => Tanaman::class, 'label' => 'Tanaman', 'name' => 'nama', 'profile_field' => 'profile_id'],
            ['model' => Komoditas::class, 'label' => 'Komoditas', 'name' => 'nama', 'profile_field' => null],
        ];

        $activities = collect();

        foreach ($sources as $source) {
            $query = $source['model']::withTrashed();

            $query->where(function ($query) use ($user) {
                $query->where('created_by', $user->id)
                    ->orWhere('updated_by', $user->id)
                    ->orWhere('deleted_by', $user->id);
            });

            $query->where(function (Builder $query) {
                $query->where('created_at', '>=', now()->subWeeks(2))
                    ->orWhere('updated_at', '>=', now()->subWeeks(2))
                    ->orWhere('deleted_at', '>=', now()->subWeeks(2));
            });

            $query->latest('updated_at')
                ->limit($limit)
                ->get()
                ->each(function ($record) use ($activities, $source) {
                    $activities->push($this->formatActivity($record, $source));
                });
        }

        return $activities
            ->sortByDesc('sort_time')
            ->take($limit)
            ->values()
            ->map(function ($activity) {
                unset($activity['sort_time']);
                return $activity;
            });
    }

    private function formatActivity($record, array $source): array
    {
        $name = $record->{$source['name']} ?? 'Tanpa nama';
        $timestamp = $record->created_at;
        $action = 'Menambahkan';
        $color = 'success';

        if ($record->deleted_at) {
            $timestamp = $record->deleted_at;
            $action = 'Menghapus';
            $color = 'danger';
        } elseif ($record->updated_at && $record->created_at && $record->updated_at->gt($record->created_at)) {
            $timestamp = $record->updated_at;
            $action = 'Memperbarui';
            $color = 'primary';
        }

        return [
            'title' => "{$action} {$source['label']}",
            'description' => "{$source['label']} {$name}",
            'time' => $timestamp ? $timestamp->diffForHumans() : '-',
            'color' => $color,
            'sort_time' => $timestamp,
        ];
    }
}