@extends('layouts.app')

@section('content')
<div class="container-fluid">
    <div class="row">
        <div class="col-md-8 offset-md-2">
            <div class="card shadow-sm">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h4 class="mb-0">Edit Teacher ({{ $teacher->user->username }})</h4>
                    <a href="{{ route('teachers.show', $teacher->id) }}" class="btn btn-info">
                        <i class="fas fa-eye"></i> View
                    </a>
                </div>

                <div class="card-body">
                    <form id="editTeacherForm" action="{{ route('teachers.update', $teacher->id) }}" method="POST">
                        @csrf
                        @method('PUT')

                        <!-- USER ACCOUNT SECTION -->
                        <div class="border rounded p-3 mb-4 bg-light">
                            <h5 class="mb-3"><i class="fas fa-user me-2"></i>User Account</h5>

                            <div class="row">
                                <div class="col-md-6">
                                    <div class="mb-3">
                                        <label for="username" class="form-label">Username *</label>
                                        <input type="text" class="form-control" id="username" name="username"
                                            value="{{ old('username', $teacher->user->username) }}" required maxlength="50">
                                        <div class="invalid-feedback" id="usernameError"></div>
                                    </div>
                                </div>

                                <div class="col-md-6">
                                    <div class="mb-3">
                                        <label for="email" class="form-label">Email *</label>
                                        <input type="email" class="form-control" id="email" name="email"
                                            value="{{ old('email', $teacher->user->email) }}" required maxlength="150">
                                        <div class="invalid-feedback" id="emailError"></div>
                                    </div>
                                </div>
                            </div>

                            <div class="form-check form-switch mt-2">
                                <input type="checkbox" class="form-check-input" id="is_active" name="is_active"
                                       value="1" {{ old('is_active', $teacher->user->is_active) ? 'checked' : '' }}>
                                <label for="is_active" class="form-check-label">Active Account</label>
                            </div>
                        </div>

                        <!-- TEACHER INFORMATION SECTION -->
                        <h5 class="mb-3"><i class="fas fa-chalkboard-teacher me-2"></i>Teacher Details</h5>

                        <div class="row">
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label for="employee_code" class="form-label">Employee Code *</label>
                                    <input type="text" class="form-control" id="employee_code" name="employee_code"
                                           value="{{ old('employee_code', $teacher->employee_code) }}"
                                           required maxlength="50">
                                    <div class="invalid-feedback" id="employee_codeError"></div>
                                </div>
                            </div>

                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label for="department" class="form-label">Department</label>
                                    <input type="text" class="form-control" id="department" name="department"
                                           value="{{ old('department', $teacher->department) }}"
                                           maxlength="120" list="departmentSuggestions">
                                    <datalist id="departmentSuggestions"></datalist>
                                    <div class="invalid-feedback" id="departmentError"></div>
                                </div>
                            </div>
                        </div>

                        <div class="row">
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label for="joined_at" class="form-label">Join Date</label>
                                    <input type="date" class="form-control" id="joined_at" name="joined_at"
                                           value="{{ old('joined_at', optional($teacher->joined_at)->format('Y-m-d')) }}">
                                    <div class="invalid-feedback" id="joined_atError"></div>
                                </div>
                            </div>
                        </div>

                        <div class="mb-3">
                            <label for="bio" class="form-label">Bio</label>
                            <textarea class="form-control" id="bio" name="bio" rows="4" maxlength="500"
                                      placeholder="Brief description about the teacher...">{{ old('bio', $teacher->bio) }}</textarea>
                            <div class="form-text">Maximum 500 characters</div>
                            <div class="invalid-feedback" id="bioError"></div>
                        </div>

                        <!-- ACTION BUTTONS -->
                        <div class="d-flex justify-content-between">
                            <a href="{{ route('teachers.index') }}" class="btn btn-secondary">
                                <i class="fas fa-arrow-left"></i> Cancel
                            </a>
                            <button type="submit" class="btn btn-primary" id="updateBtn">
                                <i class="fas fa-save"></i> Update Teacher
                            </button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
$(function() {

    /** Load Department Suggestions **/
    $.ajax({
        url: '{{ route("ajax.teacher-departments") }}',
        type: 'GET',
        success: function(response) {
            if (response.data && response.data.length > 0) {
                let options = '';
                response.data.forEach(d => options += `<option value="${d}">`);
                $('#departmentSuggestions').html(options);
            }
        }
    });

    /** Handle Form Submit **/
    $('#editTeacherForm').on('submit', function(e) {
        e.preventDefault();
        const btn = $('#updateBtn');
        const originalText = btn.html();

        btn.prop('disabled', true).html('<i class="fas fa-spinner fa-spin"></i> Updating...');
        $('.is-invalid').removeClass('is-invalid');
        $('.invalid-feedback').text('');

        $.ajax({
            url: $(this).attr('action'),
            type: 'POST',
            data: $(this).serialize(),
            success: function() {
                window.location.href = '{{ route("teachers.show", $teacher->id) }}';
            },
            error: function(xhr) {
                btn.prop('disabled', false).html(originalText);
                if (xhr.status === 422) {
                    const errors = xhr.responseJSON.errors;
                    Object.keys(errors).forEach(field => {
                        const input = $(`[name="${field}"]`);
                        const errorDiv = $(`#${field}Error`);
                        input.addClass('is-invalid');
                        errorDiv.text(errors[field][0]);
                    });
                } else {
                    alert('Error updating teacher. Please try again.');
                }
            }
        });
    });
});
</script>

<style>
.card-header h4 {
    font-weight: 600;
}
.form-label {
    font-weight: 500;
}
.avatar-lg {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.avatar-title {
    display: flex;
    align-items: center;
    justify-content: center;
}
</style>
@endpush