@extends('layouts.app')

@section('title','Edit Jadwal Mengajar')

@section('content')

<div class="container-fluid">

    {{-- Header --}}
    <div class="d-flex justify-content-between align-items-center mb-4">

        <div>

            <h3 class="font-weight-bold mb-1">
                Edit Jadwal Mengajar
            </h3>

            <p class="text-muted mb-0">
                Perbarui data jadwal mengajar guru.
            </p>

        </div>

        <a href="{{ route('jadwal.index') }}"
           class="btn btn-secondary btn-modern">

            <i class="fas fa-arrow-left mr-1"></i>

            Kembali

        </a>

    </div>

    <form action="{{ route('jadwal.update',$jadwal->id) }}" method="POST">

        @csrf
        @method('PUT')

        <div class="card card-modern shadow-sm">

            <div class="card-header bg-white border-0">

                <h5 class="mb-0">

                    <i class="fas fa-edit text-warning mr-2"></i>

                    Form Edit Jadwal

                </h5>

            </div>

            <div class="card-body">

                <div class="row">

                    {{-- Guru --}}
                    <div class="col-md-6 mb-3">

                        <label>Guru</label>

                        <select
                            name="guru_id"
                            class="form-control"
                            required>

                            @foreach($guru as $g)

                                <option
                                    value="{{ $g->id }}"
                                    {{ old('guru_id',$jadwal->guru_id)==$g->id ? 'selected' : '' }}>

                                    {{ $g->nama }}

                                </option>

                            @endforeach

                        </select>

                    </div>

                    {{-- Mata Pelajaran --}}
                    <div class="col-md-6 mb-3">

                        <label>Mata Pelajaran</label>

                        <select
                            name="mata_pelajaran_id"
                            class="form-control"
                            required>

                            @foreach($mapel as $m)

                                <option
                                    value="{{ $m->id }}"
                                    {{ old('mata_pelajaran_id',$jadwal->mata_pelajaran_id)==$m->id ? 'selected' : '' }}>

                                    {{ $m->nama_mapel }}

                                </option>

                            @endforeach

                        </select>

                    </div>

                    {{-- Kelas --}}
                    <div class="col-md-6 mb-3">

                        <label>Kelas</label>

                        <select
                            name="kelas_id"
                            class="form-control"
                            required>

                            @foreach($kelas as $k)

                                <option
                                    value="{{ $k->id }}"
                                    {{ old('kelas_id',$jadwal->kelas_id)==$k->id ? 'selected' : '' }}>

                                    {{ $k->nama_kelas }}

                                </option>

                            @endforeach

                        </select>

                    </div>

                    {{-- Hari --}}
                    <div class="col-md-6 mb-3">

                        <label>Hari</label>

                        <select
                            name="hari"
                            class="form-control"
                            required>

                            @php

                                $hari = [
                                    'Senin',
                                    'Selasa',
                                    'Rabu',
                                    'Kamis',
                                    'Jumat',
                                    'Sabtu'
                                ];

                            @endphp

                            @foreach($hari as $h)

                                <option
                                    value="{{ $h }}"
                                    {{ old('hari',$jadwal->hari)==$h ? 'selected' : '' }}>

                                    {{ $h }}

                                </option>

                            @endforeach

                        </select>

                    </div>

                    {{-- Jam Mulai --}}
                    <div class="col-md-4 mb-3">

                        <label>Jam Mulai</label>

                        <input
                            type="time"
                            id="jam_mulai"
                            name="jam_mulai"
                            value="{{ old('jam_mulai',substr($jadwal->jam_mulai,0,5)) }}"
                            class="form-control"
                            required>

                    </div>

                    {{-- Jam Selesai --}}
                    <div class="col-md-4 mb-3">

                        <label>Jam Selesai</label>

                        <input
                            type="time"
                            id="jam_selesai"
                            name="jam_selesai"
                            value="{{ old('jam_selesai',substr($jadwal->jam_selesai,0,5)) }}"
                            class="form-control"
                            required>

                    </div>

                    {{-- Total Jam --}}
                    <div class="col-md-4 mb-3">

                        <label>Total JP</label>

                        <div class="input-group">

                            <input
                                type="number"
                                step="0.1"
                                id="jam_mengajar"
                                name="jam_mengajar"
                                value="{{ old('jam_mengajar',$jadwal->jam_mengajar) }}"
                                class="form-control"
                                readonly>

                            <div class="input-group-append">

                                <span class="input-group-text">

                                    Jam

                                </span>

                            </div>

                        </div>

                    </div>

                </div>

            </div>

            <div class="card-footer bg-white">

                <button
                    type="submit"
                    class="btn btn-warning btn-modern">

                    <i class="fas fa-save mr-1"></i>

                    Update Jadwal

                </button>

                <a href="{{ route('jadwal.index') }}"
                   class="btn btn-light btn-modern">

                    Batal

                </a>

            </div>

        </div>

    </form>

</div>

<script>

const mulai = document.getElementById('jam_mulai');
const selesai = document.getElementById('jam_selesai');
const jp = document.getElementById('jam_mengajar');

mulai.addEventListener('change', hitungJP);
selesai.addEventListener('change', hitungJP);

function hitungJP(){

    if(!mulai.value || !selesai.value){
        jp.value = '';
        return;
    }

    let start = new Date('2000-01-01 ' + mulai.value);
    let end = new Date('2000-01-01 ' + selesai.value);

    let selisihMenit = (end - start) / (1000 * 60);

    if(selisihMenit <= 0){
        jp.value = '';
        return;
    }

    // 1 JP = 45 menit
    let totalJP = Math.floor(selisihMenit / 45);

    jp.value = totalJP;
}

// Hitung otomatis saat halaman edit dibuka
hitungJP();

</script>

@endsection