<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Storage;
use Symfony\Component\HttpFoundation\Response;

class MonitoringController extends Controller
{
    public function index($id_user)
    {
        // =========================
        // DATA MEDIS TERBARU
        // =========================

        $detail = DB::table('pasien_medis')
            ->where('id_user', $id_user)
            ->where('status_kesehatan', 'Masih Proses')
            ->orderByDesc('id_medis')
            ->first();

        if (!$detail) {

            return response()->json([
                'success' => false,
                'message' => 'Data medis belum diinput oleh Admin'
            ], 404);
        }

        // =========================
        // RIWAYAT OBAT
        // =========================

        $riwayat = DB::table('monitoring_obat')
            ->where('id_medis', $detail->id_medis)
            ->where('status', 1)
            ->select('hari_ke', 'tahap')
            ->get();

        // =========================
        // FILE HASIL LAB
        // =========================

        $filePasien = DB::table('file_pasien')
            ->where('id_user', $id_user)
            ->orderByDesc('id_file')
            ->get();

        // =========================
        // RESPONSE
        // =========================

        return response()->json([
            'success' => true,

            'data_medis' => [

                'id_medis' => $detail->id_medis,

                'pengobatan_ke' => $detail->pengobatan_ke,

                'diagnosa' => $detail->diagnosa,

                'tgl_mulai_pengobatan' => $detail->tgl_mulai_pengobatan,

                'tgl_estimasi_selesai' => $detail->tgl_estimasi_selesai,

                'status_kesehatan' => $detail->status_kesehatan,

                'jam_minum' => $detail->jam_minum,
            ],

            'riwayat_obat' => $riwayat,

            'file_pasien' => $filePasien
        ]);
    }
    /**
     * Menyimpan konfirmasi minum obat
     */
    public function konfirmasi(Request $request)
    {
        $request->validate([
            'id_user' => 'required',
        ]);

        $pasienMedis = DB::table('pasien_medis')
            ->where('id_user', $request->id_user)
            ->where('status_kesehatan', 'Masih Proses')
            ->orderByDesc('id_medis')
            ->first();

        if (!$pasienMedis) {

            return response()->json([
                'success' => false,
                'message' => 'Data medis pasien tidak ditemukan'
            ], 404);
        }

        // ===============================
        // VALIDASI JAM MINUM OBAT
        // ===============================

        if (!$pasienMedis->jam_minum) {

            return response()->json([
                'success' => false,
                'message' => 'Jam minum obat belum diatur admin'
            ]);
        }

        $now = now();

        $jamMinum = \Carbon\Carbon::createFromFormat(
            'H:i:s',
            $pasienMedis->jam_minum
        );

        $jadwalHariIni = now()->setTime(
            $jamMinum->hour,
            $jamMinum->minute,
            0
        );

        // BELUM BOLEH KONFIRMASI
        if ($now->lt($jadwalHariIni)) {

            return response()->json([
                'success' => false,
                'message' => 'Belum waktunya minum obat'
            ]);
        }

        /*
=====================================================
HITUNG HARI KE PENGOBATAN
=====================================================
*/

$tanggalMulai = \Carbon\Carbon::parse(
    $pasienMedis->tgl_mulai_pengobatan
)->startOfDay();

$hariKe = $tanggalMulai->diffInDays(
    now()->startOfDay()
) + 1;

/*
=====================================================
CEK MASIH DALAM MASA PENGOBATAN
=====================================================
*/

if ($hariKe < 1 || $hariKe > 168) {

    return response()->json([
        'success' => false,
        'message' => 'Masa pengobatan telah selesai'
    ]);
}

/*
=====================================================
TENTUKAN TAHAP
=====================================================
*/

$tahap = ($hariKe <= 56)
    ? 'awal'
    : 'lanjutan';

        // ===============================
        // CEK DUPLIKAT
        // ===============================

        $exists = DB::table('monitoring_obat')
            ->where('id_medis', $pasienMedis->id_medis)
            ->whereDate('tanggal', now()->toDateString())
            ->exists();

        if ($exists) {

            return response()->json([
                'success' => false,
                'message' => 'Hari ini sudah dikonfirmasi!'
            ]);
        }

        // ===============================
        // SIMPAN
        // ===============================

$insert = DB::table('monitoring_obat')->insert([
    'id_medis'       => $pasienMedis->id_medis,
    'hari_ke'        => $hariKe,
    'tahap'          => $tahap,
    'tanggal'        => now()->toDateString(),
    'jam_konfirmasi' => now()->toTimeString(),
    'status'         => 1,
    'created_at'     => now(),
    'updated_at'     => now()
]);

        if ($insert) {

            return response()->json([
                'success' => true,
                'message' => 'Konfirmasi berhasil disimpan'
            ]);
        }

        return response()->json([
            'success' => false,
            'message' => 'Gagal menyimpan ke database'
        ], 500);
    }
    /**
     * Verifikasi password pasien sebelum membuka file lab
     */
    public function verifikasiPassword(Request $request)
    {
        $request->validate([
            'id_user' => 'required',
            'password' => 'required'
        ]);

        $user = DB::table('users')
            ->where('id_user', $request->id_user)
            ->first();

        if (!$user) {
            return response()->json([
                'success' => false,
                'message' => 'User tidak ditemukan'
            ], 404);
        }

        if (!Hash::check($request->password, $user->password)) {
            return response()->json([
                'success' => false,
                'message' => 'Password salah'
            ], 401);
        }

        return response()->json([
            'success' => true,
            'message' => 'Verifikasi berhasil'
        ]);
    }
    
    public function downloadFilePasien($id_file)
{
    $file = DB::table('file_pasien')->where('id_file', $id_file)->first();

    if (!$file) return response()->json(['success'=>false,'message'=>'File tidak ditemukan'],404);

    $filePath = $file->path_file; // kolom path_file di DB
    if (!Storage::exists($filePath)) return response()->json(['success'=>false,'message'=>'File tidak ditemukan di server'],404);

    return Storage::download($filePath, $file->nama_file ?? 'dokumen.pdf');
}
}