@extends('layouts.app')
@section('title', 'Classes')
@section('breadcrumb', 'Academic › Grade Levels & Classes')

@section('content')
<div class="d-flex justify-content-between align-items-center mb-4">
    <div>
        <h4 class="fw-bold mb-0" style="color:#0f3d23;">
            <i class="bi bi-mortarboard me-2" style="color:#c9a94d;"></i>Grade Levels & Class Arms
        </h4>
        <p class="text-muted mb-0" style="font-size:.85rem;">
            {{ $school->name }}
            @if($session) &bull; Session: <strong>{{ $session->name }}</strong> @endif
        </p>
    </div>
    <div class="d-flex gap-2">
        <button class="btn btn-outline-secondary" style="border-radius:8px;"
                data-bs-toggle="modal" data-bs-target="#addGradeModal">
            <i class="bi bi-layers me-1"></i>Add Grade Level
        </button>
        <button class="btn" style="background:#1a6b3c; color:#fff; border-radius:8px;"
                data-bs-toggle="modal" data-bs-target="#addArmModal">
            <i class="bi bi-plus-lg me-1"></i>Add Class Arm
        </button>
    </div>
</div>

@if(!$session)
<div class="alert alert-warning">
    <i class="bi bi-exclamation-triangle me-1"></i>
    No active academic session. <a href="{{ route('school.academic.sessions') }}">Create a session first</a>.
</div>
@endif

@forelse($levels->sortBy('level_order') as $level)
<div class="card table-card mb-3">
    <div class="card-header py-2 d-flex justify-content-between align-items-center"
         style="background:#f5f5f5;">
        <div>
            <span class="fw-bold">{{ $level->name }}</span>
            <span class="badge bg-secondary ms-2 text-capitalize" style="font-size:.7rem;">
                {{ str_replace('_', ' ', $level->category ?? '') }}
            </span>
        </div>
        <span class="text-muted" style="font-size:.78rem;">
            {{ $level->classArms->count() }} class arm(s) this session
        </span>
    </div>

    @if($level->classArms->isEmpty())
    <div class="card-body text-center py-3 text-muted" style="font-size:.83rem;">
        No class arms for the current session.
        <a href="#" data-bs-toggle="modal" data-bs-target="#addArmModal"
           onclick="document.getElementById('arm_grade_level_id').value='{{ $level->id }}'">
            Add one
        </a>
    </div>
    @else
    <div class="table-responsive">
        <table class="table table-hover mb-0 align-middle" style="font-size:.85rem;">
            <thead>
                <tr>
                    <th>Class Arm</th>
                    <th>Form Teacher</th>
                    <th>Enrolled</th>
                    <th>Capacity</th>
                    <th>Occupancy</th>
                    <th>Actions</th>
                </tr>
            </thead>
            <tbody>
                @foreach($level->classArms->sortBy('name') as $arm)
                @php
                    $enrolled  = $arm->enrollments->count();
                    $capacity  = $arm->capacity;
                    $pct       = $capacity > 0 ? round(($enrolled / $capacity) * 100) : 0;
                    $barColor  = $pct >= 90 ? '#c62828' : ($pct >= 70 ? '#c9a94d' : '#1a6b3c');
                @endphp
                <tr>
                    <td class="fw-semibold">{{ $level->name }} {{ $arm->name }}</td>
                    <td>{{ optional($arm->formTeacher)->name ?? '—' }}</td>
                    <td>
                        <span class="badge" style="background:#e8f5ee; color:#1a6b3c;">
                            {{ $enrolled }}
                        </span>
                    </td>
                    <td>{{ $capacity }}</td>
                    <td style="min-width:120px;">
                        <div class="d-flex align-items-center gap-2">
                            <div class="progress flex-grow-1" style="height:6px; border-radius:3px;">
                                <div class="progress-bar" style="width:{{ $pct }}%; background:{{ $barColor }};"></div>
                            </div>
                            <small class="text-muted">{{ $pct }}%</small>
                        </div>
                    </td>
                    <td>
                        <div class="d-flex gap-1">
                            <a href="{{ route('school.students.index') }}"
                               class="btn btn-sm btn-outline-secondary" title="View students">
                                <i class="bi bi-people"></i>
                            </a>
                            <form action="{{ route('school.academic.class-arms.destroy', $arm) }}"
                                  method="POST" class="d-inline"
                                  onsubmit="return confirm('Delete this class arm? Only possible if no students are enrolled.')">
                                @csrf @method('DELETE')
                                <button class="btn btn-sm btn-outline-danger" title="Delete">
                                    <i class="bi bi-trash"></i>
                                </button>
                            </form>
                        </div>
                    </td>
                </tr>
                @endforeach
            </tbody>
        </table>
    </div>
    @endif
</div>
@empty
<div class="card table-card">
    <div class="card-body text-center py-5 text-muted">
        <i class="bi bi-layers fs-2 d-block mb-2"></i>
        No grade levels configured yet.
        <a href="#" data-bs-toggle="modal" data-bs-target="#addGradeModal">Add your first grade level</a>.
    </div>
</div>
@endforelse

{{-- Add Grade Level Modal --}}
<div class="modal fade" id="addGradeModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header" style="background:#0f3d23; color:#fff;">
                <h5 class="modal-title"><i class="bi bi-layers me-2"></i>Add Grade Level</h5>
                <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button>
            </div>
            <form action="{{ route('school.academic.grade-levels.store') }}" method="POST">
            @csrf
            <div class="modal-body">
                <div class="mb-3">
                    <label class="form-label fw-semibold">Grade Name <span class="text-danger">*</span></label>
                    <input type="text" name="name" class="form-control" required placeholder="e.g. Grade 10 / JSS 1 / SSS 3">
                </div>
                <div class="row g-3">
                    <div class="col-md-6">
                        <label class="form-label fw-semibold">Sort Order <span class="text-danger">*</span></label>
                        <input type="number" name="level_order" class="form-control" required min="1" max="20"
                               placeholder="1=lowest grade">
                        <div class="form-text">Used for ordering. Grade 1 = 1, Grade 12 = 12.</div>
                    </div>
                    <div class="col-md-6">
                        <label class="form-label fw-semibold">Category <span class="text-danger">*</span></label>
                        <select name="category" class="form-select" required>
                            <option value="elementary">Elementary</option>
                            <option value="junior_high">Junior High</option>
                            <option value="senior_high">Senior High</option>
                        </select>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
                <button type="submit" class="btn" style="background:#1a6b3c; color:#fff;">Add Grade Level</button>
            </div>
            </form>
        </div>
    </div>
</div>

{{-- Add Class Arm Modal --}}
<div class="modal fade" id="addArmModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header" style="background:#0f3d23; color:#fff;">
                <h5 class="modal-title"><i class="bi bi-plus-circle me-2"></i>Add Class Arm</h5>
                <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button>
            </div>
            <form action="{{ route('school.academic.class-arms.store') }}" method="POST">
            @csrf
            <div class="modal-body">
                <div class="row g-3">
                    <div class="col-md-6">
                        <label class="form-label fw-semibold">Grade Level <span class="text-danger">*</span></label>
                        <select name="grade_level_id" id="arm_grade_level_id" class="form-select" required>
                            <option value="">— Select —</option>
                            @foreach($levels->sortBy('level_order') as $level)
                            <option value="{{ $level->id }}">{{ $level->name }}</option>
                            @endforeach
                        </select>
                    </div>
                    <div class="col-md-6">
                        <label class="form-label fw-semibold">Academic Session <span class="text-danger">*</span></label>
                        <select name="academic_session_id" class="form-select" required>
                            @foreach($sessions as $s)
                            <option value="{{ $s->id }}" {{ $s->is_current ? 'selected':'' }}>
                                {{ $s->name }}{{ $s->is_current ? ' (Current)' : '' }}
                            </option>
                            @endforeach
                        </select>
                    </div>
                    <div class="col-md-6">
                        <label class="form-label fw-semibold">Arm Name <span class="text-danger">*</span></label>
                        <input type="text" name="name" class="form-control" required
                               placeholder="e.g. A, B, Science, Arts">
                    </div>
                    <div class="col-md-6">
                        <label class="form-label fw-semibold">Capacity</label>
                        <input type="number" name="capacity" class="form-control" value="40" min="1" max="100">
                    </div>
                    <div class="col-12">
                        <label class="form-label fw-semibold">Form Teacher</label>
                        <select name="form_teacher_id" class="form-select">
                            <option value="">— None assigned —</option>
                            @foreach($teachers as $teacher)
                            <option value="{{ $teacher->id }}">{{ $teacher->name }}</option>
                            @endforeach
                        </select>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
                <button type="submit" class="btn" style="background:#1a6b3c; color:#fff;">Add Class Arm</button>
            </div>
            </form>
        </div>
    </div>
</div>
@endsection