<?php

namespace App\Http\Controllers;

use App\Models\User;
use App\Models\Notification;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;

class UserController extends Controller
{
    // Daftar semua user
    public function index(Request $request)
    {
        $query = User::query();

        // Filter by role
        if ($request->filled('role')) {
            $query->where('role', $request->role);
        }

        // Search by name/email
        if ($request->filled('search')) {
            $query->where(function ($q) use ($request) {
                $q->where('name', 'like', '%' . $request->search . '%')
                  ->orWhere('email', 'like', '%' . $request->search . '%');
            });
        }

        $users = $query->latest()->paginate(10)->withQueryString();

        $totalAdmin = User::where('role', 'admin')->count();
        $totalUser  = User::where('role', 'user')->count();

        return view('users.index', compact('users', 'totalAdmin', 'totalUser'));
    }

    // Ubah role user
    public function updateRole(Request $request, User $user)
    {
        // Admin tidak bisa ubah role dirinya sendiri
        if ($user->id === auth()->id()) {
            return back()->withErrors(['error' => 'Kamu tidak bisa mengubah role akunmu sendiri.']);
        }

        $request->validate([
            'role' => 'required|in:admin,user',
        ]);

        $oldRole = $user->role;
        $user->update(['role' => $request->role]);

        $roleLabel = $request->role === 'admin' ? 'Ahli Tanaman' : 'Petani';
        $oldLabel  = $oldRole === 'admin' ? 'Ahli Tanaman' : 'Petani';

        // Notifikasi
        Notification::create([
            'user_id' => auth()->id(),
            'type'    => 'system',
            'title'   => 'Role User Diubah',
            'message' => "Role \"{$user->name}\" berhasil diubah dari {$oldLabel} menjadi {$roleLabel}.",
            'is_read' => false,
        ]);

        return back()->with('status', "Role {$user->name} berhasil diubah menjadi {$roleLabel}.");
    }

    // Hapus user
    public function destroy(User $user)
    {
        // Admin tidak bisa hapus dirinya sendiri
        if ($user->id === auth()->id()) {
            return back()->withErrors(['error' => 'Kamu tidak bisa menghapus akunmu sendiri.']);
        }

        $userName = $user->name;

        // Hapus data terkait
        $user->notifications()->delete();
        $user->diagnoses()->delete();
        $user->delete();

        // Notifikasi
        Notification::create([
            'user_id' => auth()->id(),
            'type'    => 'system',
            'title'   => 'User Dihapus',
            'message' => "Akun user \"{$userName}\" berhasil dihapus dari sistem.",
            'is_read' => false,
        ]);

        return back()->with('status', "User {$userName} berhasil dihapus.");
    }
}