@extends('layouts.app', ['title' => 'SDM / Daftar Dosen'])

@section('content')
    <div class="action-row admin-export-excel-toolbar" style="justify-content: flex-end; margin-bottom: 14px;">
        @include('admin.partials.export-excel-button', ['section' => 'faculty-members', 'label' => 'Export Excel SDM'])
    </div>

    <section class="panel manual-rps-panel">
        <div class="action-row" style="justify-content: space-between; align-items: flex-start; margin-bottom: 18px;">
            <div>
                <h2 class="section-title">SDM / Daftar Dosen</h2>
                <p class="helper" style="margin-bottom: 0;">
                    Halaman ini digunakan untuk mengelola data dosen, jabatan fungsional, pangkat/golongan,
                    daftar mata kuliah yang diampu dari periode aktif, dan koordinator rumpun mata kuliah.
                </p>
            </div>
            <button class="btn secondary" type="button" data-add-faculty-member>Tambah Dosen</button>
        </div>

        <form method="POST" action="{{ route('admin.faculty-members.update') }}" enctype="multipart/form-data" data-faculty-member-form>
            @csrf
            @method('PUT')

            <div class="faculty-member-list" data-faculty-member-list>
                @php
                    $rows = $facultyMembers->count() > 0 ? $facultyMembers : collect([new \App\Models\FacultyMember()]);
                    $courseLabelMap = collect($courseOptions)->pluck('label', 'value');
                @endphp

                @foreach ($rows as $index => $facultyMember)
                    @php
                        $lecturerKey = mb_strtolower(preg_replace('/\s+/', ' ', trim((string) $facultyMember->name)) ?? '');
                        $activeAssignedCourses = collect($activeCourseAssignmentsByLecturer[$lecturerKey] ?? [])
                            ->filter(fn ($course) => filled($course['course_name'] ?? '') || filled($course['course_code'] ?? ''))
                            ->unique(fn ($course) => trim((string) ($course['course_code'] ?? '')).'|'.trim((string) ($course['course_name'] ?? '')))
                            ->values();
                    @endphp

                    <div class="faculty-member-card manual-rps-subsection" data-faculty-member-row>
                        <input type="hidden" name="faculty_members[{{ $index }}][id]" value="{{ $facultyMember->id }}">

                        <div class="faculty-member-card-head">
                            <div>
                                <span class="badge">Dosen <span data-faculty-member-number>{{ $index + 1 }}</span></span>
                                <strong>{{ $facultyMember->name ?: 'Data Dosen Baru' }}</strong>
                            </div>
                            <button class="btn danger" type="button" data-remove-faculty-member>Hapus</button>
                        </div>

                        <div class="table-wrap">
                            <table class="manual-rps-table faculty-member-table">
                                <colgroup>
                                    <col style="width: 15%;">
                                    <col style="width: 25%;">
                                    <col style="width: 15%;">
                                    <col style="width: 18%;">
                                    <col style="width: 12%;">
                                    <col style="width: 15%;">
                                </colgroup>
                                <tbody>
                                    <tr>
                                        <th class="manual-rps-label">Nama Lengkap</th>
                                        <td colspan="3">
                                            <input type="text" name="faculty_members[{{ $index }}][name]" value="{{ old('faculty_members.'.$index.'.name', $facultyMember->name) }}" placeholder="Contoh: Henra Ahmad, S.Pd., M.Pd.">
                                        </td>
                                        <th class="manual-rps-label">NIDN</th>
                                        <td>
                                            <input type="text" name="faculty_members[{{ $index }}][nidn]" value="{{ old('faculty_members.'.$index.'.nidn', $facultyMember->nidn) }}" placeholder="NIDN">
                                        </td>
                                    </tr>
                                    <tr>
                                        <th class="manual-rps-label">NUPTK</th>
                                        <td>
                                            <input type="text" name="faculty_members[{{ $index }}][nuptk]" value="{{ old('faculty_members.'.$index.'.nuptk', $facultyMember->nuptk) }}" placeholder="NUPTK">
                                        </td>
                                        <th class="manual-rps-label">Jabatan Fungsional</th>
                                        <td>
                                            <select name="faculty_members[{{ $index }}][functional_position]">
                                                <option value="">Pilih Jabatan Fungsional</option>
                                                @foreach ($functionalPositions as $position)
                                                    <option value="{{ $position }}" @selected(old('faculty_members.'.$index.'.functional_position', $facultyMember->functional_position) === $position)>{{ $position }}</option>
                                                @endforeach
                                            </select>
                                        </td>
                                        <th class="manual-rps-label">Golongan</th>
                                        <td>
                                            <select name="faculty_members[{{ $index }}][grade]">
                                                <option value="">Pilih Golongan</option>
                                                @foreach ($grades as $grade)
                                                    <option value="{{ $grade }}" @selected(old('faculty_members.'.$index.'.grade', $facultyMember->grade) === $grade)>{{ $grade }}</option>
                                                @endforeach
                                            </select>
                                        </td>
                                    </tr>
                                    <tr>
                                        <th class="manual-rps-label">Pangkat</th>
                                        <td colspan="2">
                                            <select name="faculty_members[{{ $index }}][rank]">
                                                <option value="">Pilih Pangkat</option>
                                                @foreach ($ranks as $rank)
                                                    <option value="{{ $rank }}" @selected(old('faculty_members.'.$index.'.rank', $facultyMember->rank) === $rank)>{{ $rank }}</option>
                                                @endforeach
                                            </select>
                                        </td>
                                        <th class="manual-rps-label">Koordinator Rumpun Mata Kuliah</th>
                                        <td colspan="2">
                                            <select name="faculty_members[{{ $index }}][coordinator_group]">
                                                <option value="">Bukan / Belum Dipilih</option>
                                                @foreach ($coordinatorOptions as $option)
                                                    <option value="{{ $option }}" @selected(old('faculty_members.'.$index.'.coordinator_group', $facultyMember->coordinator_group) === $option)>{{ $option }}</option>
                                                @endforeach
                                            </select>
                                        </td>
                                    </tr>
                                    <tr>
                                        <th class="manual-rps-label">Upload TTD (PNG)</th>
                                        <td colspan="5">
                                            <div class="signature-upload-grid">
                                                <div class="manual-rps-field-stack">
                                                    <input type="hidden" name="faculty_members[{{ $index }}][current_signature_path]" value="{{ old('faculty_members.'.$index.'.current_signature_path', $facultyMember->signature_path) }}">
                                                    <input type="file" name="faculty_members[{{ $index }}][signature]" accept="image/png">
                                                    <p class="helper compact-helper">Upload tanda tangan dosen dalam format PNG. File ini akan tersimpan pada data SDM / Daftar Dosen.</p>
                                                    @if (filled($facultyMember->signature_path))
                                                        <label class="signature-remove-option">
                                                            <input type="checkbox" name="faculty_members[{{ $index }}][remove_signature]" value="1">
                                                            Hapus tanda tangan tersimpan
                                                        </label>
                                                    @endif
                                                </div>
                                                @if (filled($facultyMember->signature_path))
                                                    <div class="signature-preview-box">
                                                        <span>Preview TTD</span>
                                                        <img src="{{ asset($facultyMember->signature_path) }}" alt="Tanda tangan {{ $facultyMember->name }}">
                                                    </div>
                                                @endif
                                            </div>
                                        </td>
                                    </tr>
                                    <tr>
                                        <th class="manual-rps-label">Daftar Mata Kuliah yang Diampu</th>
                                        <td colspan="5">
                                            <div class="manual-rps-field-stack">
                                                <div class="selected-course-list readonly-course-list" data-readonly-course-list>
                                                    @forelse ($activeAssignedCourses as $assignedCourse)
                                                        @php
                                                            $assignedName = trim((string) ($assignedCourse['course_name'] ?? ''));
                                                            $assignedCode = trim((string) ($assignedCourse['course_code'] ?? ''));
                                                            $assignedLabel = trim((string) ($assignedCourse['label'] ?? ''));
                                                            if ($assignedLabel === '') {
                                                                $assignedLabel = $assignedCode !== '' ? $assignedName.' ('.$assignedCode.')' : $assignedName;
                                                            }
                                                        @endphp
                                                        <span class="selected-course-pill readonly-course-pill">
                                                            <span>{{ $assignedLabel }}</span>
                                                        </span>
                                                    @empty
                                                        <span class="readonly-empty-course">Belum ada mata kuliah yang diplot pada Pembagian Mata Kuliah periode aktif untuk dosen ini.</span>
                                                    @endforelse
                                                </div>
                                                <p class="helper compact-helper">Data ini otomatis dibaca dari <strong>Pembagian Mata Kuliah</strong> pada periode yang berstatus <strong>Aktif</strong>. Untuk mengubahnya, atur dosen pengampu di halaman Pembagian Mata Kuliah Tiap Semester.</p>
                                            </div>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                @endforeach
            </div>

            <div class="action-row" style="margin-top: 18px;">
                <button class="btn" type="submit">Simpan Daftar Dosen</button>
                <button class="btn secondary" type="button" data-add-faculty-member>Tambah Dosen</button>
            </div>
        </form>
    </section>

    <template data-faculty-member-template>
        <div class="faculty-member-card manual-rps-subsection" data-faculty-member-row>
            <input type="hidden" name="faculty_members[__INDEX__][id]" value="">

            <div class="faculty-member-card-head">
                <div>
                    <span class="badge">Dosen <span data-faculty-member-number>__NUMBER__</span></span>
                    <strong>Data Dosen Baru</strong>
                </div>
                <button class="btn danger" type="button" data-remove-faculty-member>Hapus</button>
            </div>

            <div class="table-wrap">
                <table class="manual-rps-table faculty-member-table">
                    <colgroup>
                        <col style="width: 15%;">
                        <col style="width: 25%;">
                        <col style="width: 15%;">
                        <col style="width: 18%;">
                        <col style="width: 12%;">
                        <col style="width: 15%;">
                    </colgroup>
                    <tbody>
                        <tr>
                            <th class="manual-rps-label">Nama Lengkap</th>
                            <td colspan="3">
                                <input type="text" name="faculty_members[__INDEX__][name]" value="" placeholder="Contoh: Henra Ahmad, S.Pd., M.Pd.">
                            </td>
                            <th class="manual-rps-label">NIDN</th>
                            <td>
                                <input type="text" name="faculty_members[__INDEX__][nidn]" value="" placeholder="NIDN">
                            </td>
                        </tr>
                        <tr>
                            <th class="manual-rps-label">NUPTK</th>
                            <td>
                                <input type="text" name="faculty_members[__INDEX__][nuptk]" value="" placeholder="NUPTK">
                            </td>
                            <th class="manual-rps-label">Jabatan Fungsional</th>
                            <td>
                                <select name="faculty_members[__INDEX__][functional_position]">
                                    <option value="">Pilih Jabatan Fungsional</option>
                                    @foreach ($functionalPositions as $position)
                                        <option value="{{ $position }}">{{ $position }}</option>
                                    @endforeach
                                </select>
                            </td>
                            <th class="manual-rps-label">Golongan</th>
                            <td>
                                <select name="faculty_members[__INDEX__][grade]">
                                    <option value="">Pilih Golongan</option>
                                    @foreach ($grades as $grade)
                                        <option value="{{ $grade }}">{{ $grade }}</option>
                                    @endforeach
                                </select>
                            </td>
                        </tr>
                        <tr>
                            <th class="manual-rps-label">Pangkat</th>
                            <td colspan="2">
                                <select name="faculty_members[__INDEX__][rank]">
                                    <option value="">Pilih Pangkat</option>
                                    @foreach ($ranks as $rank)
                                        <option value="{{ $rank }}">{{ $rank }}</option>
                                    @endforeach
                                </select>
                            </td>
                            <th class="manual-rps-label">Koordinator Rumpun Mata Kuliah</th>
                            <td colspan="2">
                                <select name="faculty_members[__INDEX__][coordinator_group]">
                                    <option value="">Bukan / Belum Dipilih</option>
                                    @foreach ($coordinatorOptions as $option)
                                        <option value="{{ $option }}">{{ $option }}</option>
                                    @endforeach
                                </select>
                            </td>
                        </tr>
                        <tr>
                            <th class="manual-rps-label">Upload TTD (PNG)</th>
                            <td colspan="5">
                                <div class="manual-rps-field-stack">
                                    <input type="hidden" name="faculty_members[__INDEX__][current_signature_path]" value="">
                                    <input type="file" name="faculty_members[__INDEX__][signature]" accept="image/png">
                                    <p class="helper compact-helper">Upload tanda tangan dosen dalam format PNG. File ini akan tersimpan pada data SDM / Daftar Dosen.</p>
                                </div>
                            </td>
                        </tr>
                        <tr>
                            <th class="manual-rps-label">Daftar Mata Kuliah yang Diampu</th>
                            <td colspan="5">
                                <div class="manual-rps-field-stack">
                                    <div class="selected-course-list readonly-course-list" data-readonly-course-list>
                                        <span class="readonly-empty-course">Belum ada mata kuliah yang ditampilkan. Simpan data dosen terlebih dahulu, lalu plot dosen ini pada Pembagian Mata Kuliah periode aktif.</span>
                                    </div>
                                    <p class="helper compact-helper">Data ini otomatis dibaca dari Pembagian Mata Kuliah periode aktif dan tidak diedit dari halaman SDM.</p>
                                </div>
                            </td>
                        </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </template>

    <style>
        .faculty-member-list {
            display: grid;
            gap: 18px;
        }
        .faculty-member-card {
            margin-top: 0;
        }
        .faculty-member-card-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .faculty-member-card-head > div {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .faculty-member-table {
            min-width: 1120px;
        }
        .faculty-member-table .manual-rps-label {
            white-space: normal;
        }
        .faculty-course-dropdown {
            width: 100%;
        }
        .selected-course-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 8px;
        }
        .selected-course-pill {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 9px 10px 9px 12px;
            border: 1px solid rgba(37, 99, 235, 0.24);
            border-radius: 12px;
            background: rgba(239, 246, 255, 0.86);
            color: var(--text);
            line-height: 1.35;
        }
        .selected-course-pill button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border: 1px solid rgba(239, 68, 68, 0.28);
            border-radius: 999px;
            background: rgba(254, 242, 242, 0.95);
            color: #b91c1c;
            font-size: 20px;
            line-height: 1;
            cursor: pointer;
            flex: 0 0 auto;
        }
        .selected-course-pill button:hover {
            background: #fee2e2;
        }
        .readonly-course-list {
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        }
        .readonly-course-pill {
            justify-content: flex-start;
            border-color: rgba(22, 163, 74, 0.26);
            background: rgba(240, 253, 244, 0.92);
            color: #14532d;
            font-weight: 700;
        }
        .readonly-empty-course {
            display: block;
            padding: 11px 12px;
            border: 1px dashed rgba(100, 116, 139, 0.36);
            border-radius: 12px;
            background: rgba(248, 250, 252, 0.9);
            color: var(--muted);
            line-height: 1.45;
        }
        .compact-helper {
            margin-top: 2px;
            margin-bottom: 0;
            font-size: 0.84rem;
        }

        .signature-upload-grid {
            display: grid;
            grid-template-columns: minmax(280px, 1fr) auto;
            gap: 16px;
            align-items: start;
        }
        .signature-preview-box {
            display: inline-flex;
            flex-direction: column;
            gap: 6px;
            align-items: center;
            min-width: 180px;
            padding: 10px 12px;
            border: 1px solid rgba(37, 99, 235, 0.22);
            border-radius: 14px;
            background: rgba(248, 250, 252, 0.88);
            color: var(--muted);
            font-size: 0.84rem;
        }
        .signature-preview-box img {
            max-height: 76px;
            max-width: 220px;
            object-fit: contain;
        }
        .signature-remove-option {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 6px;
            color: #b91c1c;
            font-weight: 700;
        }
        .signature-remove-option input {
            width: auto;
        }
        @media (max-width: 720px) {
            .faculty-member-card-head {
                align-items: flex-start;
                flex-direction: column;
            }
            .selected-course-list {
                grid-template-columns: 1fr;
            }
            .signature-upload-grid {
                grid-template-columns: 1fr;
            }
        }
    </style>

    <script>
        document.addEventListener('DOMContentLoaded', () => {
            const list = document.querySelector('[data-faculty-member-list]');
            const template = document.querySelector('[data-faculty-member-template]');
            const addButtons = document.querySelectorAll('[data-add-faculty-member]');

            if (!list || !template) {
                return;
            }

            const refreshNumbers = () => {
                list.querySelectorAll('[data-faculty-member-row]').forEach((row, index) => {
                    const number = row.querySelector('[data-faculty-member-number]');
                    if (number) {
                        number.textContent = String(index + 1);
                    }
                });
            };

            const nextIndex = () => Date.now().toString();

            const getRowIndex = (row) => {
                const hiddenId = row.querySelector('input[type="hidden"][name$="[id]"]');
                const match = hiddenId?.name?.match(/faculty_members\[([^\]]+)\]/);
                return match ? match[1] : nextIndex();
            };

            const escapeHtml = (value) => String(value)
                .replace(/&/g, '&amp;')
                .replace(/</g, '&lt;')
                .replace(/>/g, '&gt;')
                .replace(/"/g, '&quot;')
                .replace(/'/g, '&#039;');

            const addCoursePill = (row, value, label) => {
                if (!value) {
                    return;
                }

                const selectedList = row.querySelector('[data-selected-course-list]');
                if (!selectedList || selectedList.querySelector(`[data-course-pill][data-value="${CSS.escape(value)}"]`)) {
                    return;
                }

                const index = getRowIndex(row);
                selectedList.insertAdjacentHTML('beforeend', `
                    <span class="selected-course-pill" data-course-pill data-value="${escapeHtml(value)}">
                        <span>${escapeHtml(label || value.replace('|||', ' - '))}</span>
                        <button type="button" aria-label="Hapus mata kuliah" data-remove-course>&times;</button>
                        <input type="hidden" name="faculty_members[${escapeHtml(index)}][courses][]" value="${escapeHtml(value)}">
                    </span>
                `);
            };

            addButtons.forEach((button) => {
                button.addEventListener('click', () => {
                    const index = nextIndex();
                    const number = list.querySelectorAll('[data-faculty-member-row]').length + 1;
                    const html = template.innerHTML
                        .replaceAll('__INDEX__', index)
                        .replaceAll('__NUMBER__', number);

                    list.insertAdjacentHTML('beforeend', html);
                    refreshNumbers();
                });
            });

            list.addEventListener('change', (event) => {
                const dropdown = event.target.closest('[data-course-dropdown]');
                if (!dropdown) {
                    return;
                }

                const row = dropdown.closest('[data-faculty-member-row]');
                const selectedOption = dropdown.options[dropdown.selectedIndex];

                if (!row || !selectedOption || !selectedOption.value) {
                    return;
                }

                addCoursePill(row, selectedOption.value, selectedOption.textContent.trim());
                dropdown.value = '';
            });

            list.addEventListener('click', (event) => {
                const removeCourseButton = event.target.closest('[data-remove-course]');
                if (removeCourseButton) {
                    removeCourseButton.closest('[data-course-pill]')?.remove();
                    return;
                }

                const button = event.target.closest('[data-remove-faculty-member]');

                if (!button) {
                    return;
                }

                const row = button.closest('[data-faculty-member-row]');

                if (!row) {
                    return;
                }

                if (list.querySelectorAll('[data-faculty-member-row]').length === 1) {
                    row.querySelectorAll('input:not([type="hidden"]), textarea').forEach((input) => input.value = '');
                    row.querySelectorAll('select').forEach((select) => {
                        Array.from(select.options).forEach((option) => option.selected = false);
                        select.selectedIndex = 0;
                    });
                    row.querySelectorAll('[data-course-pill]').forEach((pill) => pill.remove());
                    row.querySelectorAll('input[type="hidden"]').forEach((input) => input.setAttribute('value', ''));
                    row.querySelectorAll('input[type="checkbox"]').forEach((input) => input.checked = false);
                    return;
                }

                row.remove();
                refreshNumbers();
            });
        });
    </script>
@endsection