@extends('teacher.teacher_dashboard')

@section('admin')
<!--**********************************
    Content body start
***********************************-->
<div class="content-body default-height">
    <div class="container-fluid">

        {{-- Breadcrumb --}}
        <div class="row page-titles">
            <ol class="breadcrumb">
                <li class="breadcrumb-item"><a href="javascript:void(0)">CMS</a></li>
                <li class="breadcrumb-item"><a href="javascript:void(0)">Homework</a></li>
                <li class="breadcrumb-item active"><a href="javascript:void(0)">Create</a></li>
            </ol>
        </div>

        {{-- Validation Errors --}}
        @if ($errors->any())
            <div class="alert alert-danger">
                <ul class="mb-0">
                    @foreach ($errors->all() as $error)
                        <li>{{ $error }}</li>
                    @endforeach
                </ul>
            </div>
        @endif

        <div class="row">
            <div class="col-xl-12">

                {{-- Header / Tools --}}
                <div class="mb-4 pb-2 d-flex align-items-center justify-content-between flex-wrap">
                    <h4 class="mb-2">Create Homework</h4>
                    <div class="mb-2">
                        <a href="{{ route('homeworks.index') }}" class="btn btn-primary btn-sm">
                            <i class="fa-solid fa-list me-1"></i> Homework List
                        </a>
                    </div>
                </div>

                {{-- Form Box (CMS style) --}}
                <div class="filter cm-content-box box-primary">
                    <div class="content-title SlideToolHeader">
                        <div class="cpa">
                            <i class="fa-solid fa-file-pen me-2"></i>Create Homework
                        </div>
                        <div class="tools">
                            <a href="javascript:void(0);" class="expand handle">
                                <i class="fal fa-angle-down"></i>
                            </a>
                        </div>
                    </div>

                    <div class="cm-content-body form excerpt">
                        <div class="card-body">

                            <form action="{{ route('homeworks.store') }}" method="POST" enctype="multipart/form-data">
                                @csrf

                                <div class="row">

                                    {{-- Session --}}
                                    <div class="col-xl-4 col-sm-6 mb-3">
                                        <label for="session_id" class="form-label">Session</label>
                                        <select id="session_id" name="session_id" class="form-control default-select h-auto wide" required>
                                            <option value="">Select Session</option>
                                            @foreach($sessions as $session)
                                                <option value="{{ $session->id }}" {{ $currentSession && $currentSession->id == $session->id ? 'selected' : '' }}>{{ $session->name }}</option>
                                            @endforeach
                                        </select>
                                    </div>

                                    {{-- Class --}}
                                    <div class="col-xl-4 col-sm-6 mb-3">
                                        <label for="class_id" class="form-label">Class</label>
                                        <select id="class_id" name="class_id" class="form-control default-select h-auto wide" required>
                                            <option value="">Select Class</option>
                                        </select>
                                    </div>

                                    {{-- Section --}}
                                    <div class="col-xl-4 col-sm-6 mb-3">
                                        <label for="section_id" class="form-label">Section</label>
                                        <select id="section_id" name="section_id" class="form-control default-select h-auto wide" required>
                                            <option value="">Select Section</option>
                                        </select>
                                    </div>

                                    {{-- Subject --}}
                                    <div class="col-xl-4 col-sm-6 mb-3">
                                        <label for="subject_id" class="form-label">Subject</label>
                                        <select id="subject_id" name="subject_id" class="form-control default-select h-auto wide" required>
                                            <option value="">Select Subject</option>
                                        </select>
                                    </div>

                                    {{-- Due Date --}}
                                    <div class="col-xl-4 col-sm-6 mb-3">
                                        <label for="due_date" class="form-label">Due Date</label>
                                        <input type="date" id="due_date" name="due_date" class="form-control" required>
                                    </div>

                                    {{-- Title Template Selector --}}
                                    <div class="col-xl-4 col-sm-6 mb-3">
                                        <label for="title_template" class="form-label">
                                            <i class="fa-solid fa-file-lines me-1"></i>Title Template (Optional)
                                        </label>
                                        <select id="title_template" class="form-control default-select h-auto wide">
                                            <option value="">-- Select Title Template --</option>
                                        </select>
                                        <small class="text-muted">Select a template to auto-fill the title</small>
                                    </div>

                                    {{-- Title --}}
                                    <div class="col-xl-8 col-sm-6 mb-3">
                                        <label for="title" class="form-label">Title & Description <span class="text-danger">*</span></label>
                                        <input type="text" id="title" name="title" class="form-control" placeholder="Homework title" required>
                                    </div>

                                    {{-- Comments Template Selector --}}
                                    <div class="col-xl-12 mb-2">
                                        <label for="description_template" class="form-label">
                                            <i class="fa-solid fa-file-lines me-1"></i>Comments Template (Optional)
                                        </label>
                                        <select id="description_template" class="form-control default-select h-auto wide">
                                            <option value="">-- Select Comments Template --</option>
                                        </select>
                                        <small class="text-muted">Select a template to auto-fill the comments</small>
                                    </div>

                                    {{-- Description --}}
                                    <div class="col-xl-12 mb-3">
                                        <label for="description" class="form-label">Comments</label>
                                        <textarea id="description" name="description" class="form-control" rows="4" placeholder="Write homework details..."></textarea>
                                    </div>

                                    {{-- Attachment --}}
                                    <div class="col-xl-6 col-sm-12 mb-3">
                                        <label for="attachment" class="form-label">Attachment (optional)</label>
                                        <input type="file" id="attachment" name="attachment" class="form-control">
                                    </div>

                                    {{-- Actions --}}
                                    <div class="col-xl-6 col-sm-12 mb-3 d-flex align-items-end justify-content-end gap-2">
                                        <a href="{{ route('homeworks.index') }}" class="btn btn-danger light">
                                            Cancel
                                        </a>
                                        <button type="submit" class="btn btn-primary">
                                            <i class="fa-solid fa-floppy-disk me-1"></i> Save Homework
                                        </button>
                                    </div>

                                </div>
                            </form>

                        </div>
                    </div>
                </div>

            </div>
        </div>

    </div>
</div>
<!--**********************************
    Content body end
***********************************-->
@endsection


@section('customjs')
<script>
document.addEventListener('DOMContentLoaded', function(){

    // Function to load templates by type
    function loadTemplates(type, selectElement) {
        fetch("{{ route('templates.getByType') }}", {
            method: "POST",
            headers: {
                "Content-Type": "application/json",
                "X-CSRF-TOKEN": document.querySelector('meta[name="csrf-token"]').content
            },
            body: JSON.stringify({ type: type })
        })
        .then(res => res.json())
        .then(data => {
            let options = `<option value="">-- Select ${type.charAt(0).toUpperCase() + type.slice(1)} Template --</option>`;
            data.forEach(template => {
                options += `<option value="${template.id}" data-content="${escapeHtml(template.content)}">${template.name}</option>`;
            });
            document.querySelector(selectElement).innerHTML = options;
        })
        .catch(err => console.error('Error loading templates:', err));
    }

    // Function to escape HTML
    function escapeHtml(text) {
        const div = document.createElement('div');
        div.textContent = text;
        return div.innerHTML;
    }

    // Handle title template selection
    document.getElementById('title_template').addEventListener('change', function() {
        const selectedOption = this.options[this.selectedIndex];
        const content = selectedOption.getAttribute('data-content');
        if (content) {
            document.getElementById('title').value = content;
        }
    });

    // Handle description template selection
    document.getElementById('description_template').addEventListener('change', function() {
        const selectedOption = this.options[this.selectedIndex];
        const content = selectedOption.getAttribute('data-content');
        if (content) {
            document.getElementById('description').value = content;
        }
    });

    // Load class when Session changes
    document.getElementById('session_id').addEventListener('change', function(){
        fetch("{{ route('teacher.getClasses') }}",{
            method:"POST",
            headers:{
                "Content-Type":"application/json",
                "X-CSRF-TOKEN":document.querySelector('meta[name="csrf-token"]').content
            },
            body:JSON.stringify({session_id:this.value})
        })
        .then(res=>res.json())
        .then(data=>{
            let cls = `<option value="">Select Class</option>`;
            data.forEach(item=> cls += `<option value="${item.id}">${item.name}</option>`);
            document.getElementById('class_id').innerHTML = cls;
            document.getElementById('section_id').innerHTML = `<option value="">Select Section</option>`;
            document.getElementById('subject_id').innerHTML = `<option value="">Select Subject</option>`;
        });
    });

    // Load section when class changes
    document.getElementById('class_id').addEventListener('change', function(){
        fetch("{{ route('teacher.getSections') }}",{
            method:"POST",
            headers:{
                "Content-Type":"application/json",
                "X-CSRF-TOKEN":document.querySelector('meta[name="csrf-token"]').content
            },
            body:JSON.stringify({
                session_id:document.getElementById('session_id').value,
                class_id:this.value
            })
        })
        .then(res=>res.json())
        .then(data=>{
            let sec = `<option value="">Select Section</option>`;
            Object.values(data).forEach(s=> sec += `<option value="${s.id}">${s.name}</option>`);
            document.getElementById('section_id').innerHTML = sec;
            document.getElementById('subject_id').innerHTML = `<option value="">Select Subject</option>`;
        });
    });

    // Load Subjects Based on Session + Class + Section (jQuery required)
    $('#section_id').change(function(){
        var sessionID = $('#session_id').val();
        var classID = $('#class_id').val();
        var sectionID = $(this).val();

        $.get("/teacher/get-subjects/"+sessionID+"/"+classID+"/"+sectionID,function(data){
            $("#subject_id").empty().append('<option value="">Select Subject</option>');
            $.each(data, function(key,val){
                $("#subject_id").append('<option value="'+val.subject_id+'">'+val.subject.name+'</option>');
            });
        });
    });

    // Load templates on page load
    loadTemplates('title', '#title_template');
    loadTemplates('description', '#description_template');

    // Auto-load classes if current session is selected
    // IMPORTANT: Event listeners must be attached BEFORE triggering the event
    const sessionSelect = document.getElementById('session_id');
    if (sessionSelect.value) {
        // Trigger change event to load classes automatically
        sessionSelect.dispatchEvent(new Event('change'));
    }

});
</script>
@endsection