
@extends('layouts.master')

@section('title')
    Dashboard
@endsection

@section('header')
<div class="page-title">
    <h3>Dashboard</h3>
</div>
@endsection

@section('css')
    <style>
        .btn-fakultas {
            background: none;
            border: none;
            color: #007bff;
            font-weight: 600;
            cursor: pointer;
            padding: 4px 8px;
            transition: all 0.2s ease-in-out;
            border-radius: 8px;
        }

        .btn-fakultas:hover {
            background: #007bff;
            color: white;
            box-shadow: 0 2px 6px rgba(0,0,0,0.2);
        }

        .tooltip-fakultas {
            position: absolute;
            background: white;
            border: 1px solid #ccc;
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 13px;
            display: none;
            z-index: 9999;
            pointer-events: none;
            max-width: 220px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
            transition: opacity 0.15s ease-in-out;
        }
    </style>
@endsection

@section('contents')
    @php
    $menu = 'dashboard';
    @endphp

    <!-- start page title -->
    <div class="page-title-box">

    </div>
    <!-- end page title -->

    <div class="row">
        <div class="col-lg-12">
            <div class="card">
                <div class="card-body">
                    <center>
                    <h1 class="display-5">Selamat Datang di SIM PMW </h1>
                    <h1 class="display-6 text-primary">(Sistem Informasi Manajemen Program Mahasiswa Wirausaha )</h1>
                    <h1 class="display-7 text-warning">Universitas Negeri Surabaya</h1>
                    </center>
                </div>
            </div>
        </div>
        <div class="col-lg-12">
            <div class="card">
                <div class="card-body">
                    <h4 class="card-title">Pengumuman :</h4>
                    <h5>{!! $pengumuman->pengumuman ?? '' !!} </h5>
                </div>
            </div>
        </div>
        <div class="col-lg-12">
            <div class="card">
                <div class="card-body">
                    <div class="row">
                        <div class="col-12 col-lg-4 col-md-4 col-sm-12">
                            <div class="row">
                                <label class="col-sm-3 col-form-label">Kategori : </label>
                                <div class="col-sm-6">
                                    <select class="form-select select2" name="reqJenisPmw" id="reqJenisPmw">
                                        <option value="">Semua</option>
                                        @foreach ($jenis as $item)
                                            <option value="{{ $item->jenis_id }}">{{ $item->nama }}</option>
                                        @endforeach
                                    </select>
                                </div>
                            </div>
                        </div>
                        <div class="col-12 col-lg-4 col-md-4 col-sm-12">
                            <div class="row">
                                <label class="col-sm-3 col-form-label">Tahap : </label>
                                <div class="col-sm-6">
                                    <select class="form-select select2" name="reqStatus" id="reqStatus">
                                        <option value="">Semua</option>
                                        <option value="proposal">Proposal</option>
                                        {{-- <option value="internal">Seleksi Internal</option> --}}
                                        <option value="monev1">Monev Internal I</option>
                                        <option value="monev2">Monev Internal II</option>
                                    </select>
                                </div>
                            </div>
                        </div>
                        <div class="col-12 col-lg-4 col-md-4 col-sm-12">
                            <div class="row">
                                <label class="col-sm-3 col-form-label">Tahun : </label>
                                <div class="col-sm-6">
                                    <select class="form-select select2" name="tahun" id="tahun">
                                        <option value="">Semua</option>
                                        @foreach ($tahun as $item)
                                            <option value="{{ $item->nama }}" {{ $item->nama == date('Y') ? 'selected' : '' }}>
                                                {{ $item->nama }}</option>
                                        @endforeach
                                    </select>
                                    {{-- <select class="form-select select2" name="reqTahun" id="reqTahun">
                                        <option value="0">Semua</option>
                                        @foreach ($periode as $res)
                                            <option value="{{ $res->nama }}">{{ $res->nama }}</option>
                                        @endforeach
                                    </select> --}}
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                @if (Auth::user()->hasrole(['operator']))
                    <div class="card-body">
                        <div class="card-title card-title-grafik">
                            <h4>Grafik Data PMW Per Fakultas</h4>
                        </div>
                        <div class="row">
                            <div class="col-12">
                                <div id="chartLoading" class="shadow rounded-pill col-3 mx-auto p-3 text-center my-4" style="display: none;">
                                    {{-- <div class="shadow rounded border col-3 mx-auto p-3 text-center py-4"> --}}
                                        <div class="spinner-border text-primary" role="status"></div>
                                        <p class="mt-2 mb-0 d-none d-lg-block">Memuat data grafik...</p>
                                    {{-- </div> --}}
                                </div>
                                <canvas id="chartFakultas" style="min-height: 400px; display:none;"></canvas>
                            </div>
                        </div>
                        <div class="row mt-3">
                            <div class="col-12">
                                <div class="alert alert-info">
                                    <i class="mdi mdi-information-outline me-2"></i>
                                    <strong>Petunjuk:</strong> Klik pada bar chart untuk memfilter data berdasarkan fakultas tertentu.
                                </div>
                            </div>
                        </div>
                    </div>
                @endif
            </div>
        </div>

        {{-- <div class="col-lg-12">
            <div class="card">

            </div>
        </div> --}}
    </div>
@endsection

@section('js')
    @if (Auth::user()->hasrole(['operator']))
        {{-- <script src="{{ asset('theme/libs/chart.js/Chart.min.js') }}"></script> --}}
        <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
        <script>
            let chartInstance = null;
            let fullData = [];

            async function loadChart() {
                const spinner = document.getElementById('chartLoading');
                const canvas = document.getElementById('chartFakultas');

                try {
                    // Tampilkan spinner, sembunyikan canvas
                    spinner.style.display = 'block';
                    canvas.style.display = 'none';

                    // Ambil nilai filter
                    const kategori = document.getElementById('reqJenisPmw').value;
                    const tahap = document.getElementById('reqStatus').value;
                    const tahun = document.getElementById('tahun').value;

                    // Buat URL dengan parameter filter
                    const url = new URL("{{ route('dashboard.chart-data') }}", window.location.origin);
                    if (kategori) url.searchParams.append('reqJenisPmw', kategori);
                    if (tahap) url.searchParams.append('reqStatus', tahap);
                    if (tahun) url.searchParams.append('tahun', tahun);

                    // Debug: log filter parameters
                    // console.log('Filter parameters:', { kategori, tahap, tahun });
                    // console.log('Request URL:', url.toString());

                    // Timeout 3 detik agar loading tidak terlalu lama
                    const controller = new AbortController();
                    const timeout = setTimeout(() => controller.abort(), 3000);

                    const response = await fetch(url, { signal: controller.signal });

                    clearTimeout(timeout);

                    if (!response.ok) throw new Error('Gagal mengambil data');

                    const data = await response.json();

                    // Validasi format data
                    if (!Array.isArray(data) || !data.length || !data[0].fakultas) {
                        throw new Error('Format data tidak sesuai');
                    }

                    const labels = data.map(item => {
                        // Handle multi-line labels for Chart.js
                        let label = item.fakultas;
                        if (label.includes('\n')) {
                            label = label.split('\n');
                        }

                        // Change FP to FPsi for display only
                        if (Array.isArray(label)) {
                            return label.map(line => line === 'FPsi' ? 'FPsi' : line);
                        } else {
                            return label === 'FPsi' ? 'FPsi' : label;
                        }
                    });

                    const proposalData = data.map(item => item.proposal);
                    const monev1Data = data.map(item => item.monev1);
                    const monev2Data = data.map(item => item.monev2);

                    const ctx = document.getElementById('chartFakultas').getContext('2d');
                    // const { labels, proposalData, monev1Data, monev2Data } = data;

                    // Hapus chart lama jika ada
                    if (window.chartFakultasInstance) {
                        window.chartFakultasInstance.destroy();
                    }

                    // Buat chart baru
                    window.chartFakultasInstance = new Chart(ctx, {
                        type: 'bar',
                        data: {
                            labels,
                            datasets: [
                                { label: 'Proposal', data: proposalData, backgroundColor: 'rgba(54, 162, 235, 0.8)' },
                                { label: 'Monev Internal I', data: monev1Data, backgroundColor: 'rgba(255, 206, 86, 0.8)' },
                                { label: 'Monev Internal II', data: monev2Data, backgroundColor: 'rgba(255, 99, 132, 0.8)' },
                            ]
                        },
                        options: {
                            responsive: true,
                            animation: { duration: 1000, easing: 'easeOutQuart' },
                            plugins: {
                                legend: {
                                    position: 'top',
                                    labels: { padding: 32, cursor: 'pointer' },
                                    onHover: (e) => e.native.target.style.cursor = 'pointer',
                                    onLeave: (e) => e.native.target.style.cursor = 'default'
                                },
                                title: {
                                    display: true,
                                    text: 'Jumlah Data Proposal & Monev Internal per Fakultas',
                                    font: { size: 16 }
                                }
                            },
                            scales: {
                                x: {
                                    ticks: {
                                        maxRotation: 0,
                                        minRotation: 0
                                    }
                                },
                                y: {
                                    beginAtZero: true,
                                    ticks: { stepSize: 50 }
                                }
                            }
                        }
                    });

                    // ✅ Simpan data penuh untuk keperluan filter ulang
                    fullData = data;

                    // ✅ Event klik label fakultas di bawah chart
                    canvas.addEventListener('click', function (event) {
                        const chart = window.chartFakultasInstance;
                        const xAxis = chart.scales.x;
                        const yAxis = chart.scales.y;

                        const x = event.offsetX;
                        const y = event.offsetY;

                        // Deteksi klik di area label fakultas bawah chart
                        if (y > yAxis.bottom && y < yAxis.bottom + 30) {
                            const labelIndex = Math.floor(
                                ((x - xAxis.left) / (xAxis.right - xAxis.left)) * chart.data.labels.length
                            );

                            if (labelIndex < 0 || labelIndex >= chart.data.labels.length) return;

                            // Normalisasi label (gabungkan kalau array)
                            const clickedLabel = Array.isArray(chart.data.labels[labelIndex])
                                ? chart.data.labels[labelIndex].join(' ')
                                : chart.data.labels[labelIndex];

                            if (!clickedLabel) return;

                            // Deteksi apakah chart sedang dalam mode filter (1 fakultas saja)
                            const currentLabel = chart.data.labels.length === 1
                                ? (Array.isArray(chart.data.labels[0])
                                    ? chart.data.labels[0].join(' ')
                                    : chart.data.labels[0])
                                : null;

                            const isFiltered = currentLabel && currentLabel === clickedLabel;

                            // 🔁 Jika sedang difilter & diklik lagi → kembalikan ke semua fakultas
                            if (isFiltered) {
                                chart.data.labels = fullData.map(d =>
                                    d.fakultas.includes('\n') ? d.fakultas.split('\n') : d.fakultas
                                );
                                chart.data.datasets[0].data = fullData.map(d => d.proposal);
                                chart.data.datasets[1].data = fullData.map(d => d.monev1);
                                chart.data.datasets[2].data = fullData.map(d => d.monev2);
                                chart.update();
                                return;
                            }

                            // 🔍 Cari data fakultas yang diklik, meskipun nilainya semua 0
                            const selected = fullData.find(d => {
                                const fName = d.fakultas.replace(/\n/g, ' ').trim();
                                return fName === clickedLabel.trim();
                            });

                            if (!selected) return;

                            // 🧩 Update chart untuk menampilkan hanya fakultas yang diklik
                            chart.data.labels = [
                                selected.fakultas.includes('\n') ? selected.fakultas.split('\n') : selected.fakultas
                            ];
                            chart.data.datasets[0].data = [selected.proposal];
                            chart.data.datasets[1].data = [selected.monev1];
                            chart.data.datasets[2].data = [selected.monev2];
                            chart.update();
                        }
                    });

                    // ==========================
                    // ✅ TOOLTIP LABEL FAKULTAS
                    // ==========================

                    // Sembunyikan spinner, tampilkan chart
                    spinner.style.display = 'none';
                                        canvas.style.display = 'block';

                    let labelTooltip = document.createElement('div');
                    labelTooltip.className = 'tooltip-fakultas shadow';
                    labelTooltip.style.display = 'none';
                    document.body.appendChild(labelTooltip);

                    canvas.addEventListener('mousemove', function (event) {
                        const chart = window.chartFakultasInstance;
                        const xAxis = chart.scales.x;
                        const yAxis = chart.scales.y;

                        const x = event.offsetX;
                        const y = event.offsetY;

                        // Hitung index label yang sedang dihover
                        if (y > yAxis.bottom && y < yAxis.bottom + 30) {
                            const labelIndex = Math.floor(
                                ((x - xAxis.left) / (xAxis.right - xAxis.left)) * chart.data.labels.length
                            );

                            // Ambil nama fakultas (gabungkan jika array)
                            const fakultas = Array.isArray(chart.data.labels[labelIndex])
                                ? chart.data.labels[labelIndex].join(' ')
                                : chart.data.labels[labelIndex];

                            // 🔍 Cari data fakultas dari fullData (agar tetap muncul meskipun difilter)
                            const item = fullData.find(d => d.fakultas.replace(/\n/g, ' ').trim() === fakultas.trim());

                            if (item) {
                                labelTooltip.innerHTML = `
                                    <strong>${fakultas}</strong><br>
                                    <div class="d-flex align-items-center mt-1">
                                        <div style="width:12px; height:12px; background-color:rgba(54, 162, 235, 0.8); margin-right:6px; border-radius:2px;"></div>
                                        Proposal: ${item.proposal}
                                    </div>
                                    <div class="d-flex align-items-center mt-1">
                                        <div style="width:12px; height:12px; background-color:rgba(255, 206, 86, 0.8); margin-right:6px; border-radius:2px;"></div>
                                        Monev I: ${item.monev1}
                                    </div>
                                    <div class="d-flex align-items-center mt-1">
                                        <div style="width:12px; height:12px; background-color:rgba(255, 99, 132, 0.8); margin-right:6px; border-radius:2px;"></div>
                                        Monev II: ${item.monev2}
                                    </div>
                                `;

                                labelTooltip.style.display = 'block';
                                labelTooltip.style.left = `${event.pageX + 10}px`;
                                labelTooltip.style.top = `${event.pageY - labelTooltip.offsetHeight - 10}px`;

                                canvas.style.cursor = 'pointer';
                            }
                        } else {
                            labelTooltip.style.display = 'none';
                            canvas.style.cursor = 'default';
                        }
                    });

                    canvas.addEventListener('mouseleave', function () {
                        labelTooltip.style.display = 'none';
                        canvas.style.cursor = 'default';
                    });
                } catch (error) {
                    console.error('Gagal memuat chart:', error);

                    spinner.style.display = 'none';
                    canvas.style.display = 'none';

                    await Swal.fire({
                        icon: 'error',
                        title: 'Gagal Memuat Grafik',
                        text: 'Terjadi kesalahan saat mengambil data grafik.\nSilakan coba lagi.',
                        confirmButtonText: 'OK',
                        timer: 4000
                    });
                }
            }

            // Muat chart pertama kali
            document.addEventListener('DOMContentLoaded', () => {
                loadChart();

                // Tambahkan event listener untuk filter dropdowns
                const filterSelects = ['reqJenisPmw', 'reqStatus', 'tahun'];
                filterSelects.forEach(selectId => {
                    const select = document.getElementById(selectId);
                    if (select) {
                        select.addEventListener('change', () => {
                            loadChart();
                        });
                    }
                });
            });
        </script>
    @endif
@endsection
