import re

with open("backend/app/Views/CurriculumStudio.php", "r") as f:
    content = f.read()

new_script = """        async function handleRealPdfUpload(input) {
            if (!input.files || !input.files[0]) return;
            const file = input.files[0];

            const btn = document.getElementById('btn_upload_pdf');
            const desc = document.getElementById('upload_status_desc');
            btn.disabled = true;
            btn.innerHTML = '<span>⏳ جاري الرفع...</span>';
            desc.textContent = `جاري رفع ملف [${file.name}] وبدء عملية استخراج المناهج...`;

            const formData = new FormData();
            formData.append('pdf_file', file);

            try {
                const res = await fetch('/api/curriculum/upload-pdf', {
                    method: 'POST',
                    body: formData
                });
                const data = await res.json();
                
                if (res.ok && data.status === 'processing') {
                    // Start Polling
                    pollTaskStatus(data.task_id, file.name);
                } else if (res.ok && data.status === 'success') {
                    // Fallback if it returned sync
                    processSuccessData(data, file.name);
                } else {
                    alert('⚠️ ' + (data.message || 'فشلت معالجة الملف'));
                    resetUploadBtn();
                }
            } catch (err) {
                console.error('PDF Upload error:', err);
                alert('حدث خطأ في الاتصال بالخادم أثناء رفع الملف.');
                resetUploadBtn();
            }
        }

        async function pollTaskStatus(taskId, fileName) {
            const btn = document.getElementById('btn_upload_pdf');
            const desc = document.getElementById('upload_status_desc');
            
            try {
                const res = await fetch(`/api/curriculum/upload-status?task_id=${taskId}`);
                if (!res.ok) throw new Error("Network response was not ok");
                const state = await res.json();
                
                if (state.status === 'completed') {
                    desc.textContent = `تم الانتهاء بنجاح! تم استخراج المنهج بالكامل لـ [${fileName}]`;
                    btn.innerHTML = '<span>✅ اكتمل التفريغ</span>';
                    setTimeout(() => { resetUploadBtn(); }, 3000);
                    
                    if (state.tree) {
                        window.CURRICULUM_TREE = state.tree;
                        currentFilePath = state.active_file || '';
                        renderCurriculumTree(state.tree);
                        if (state.active_file) {
                           selectLesson(state.active_file, 'الدرس المستخرج', 'المسار التعليمي', []);
                           fetchLessonContent(state.active_file);
                        }
                    } else {
                        // Reload tree completely
                        loadCurriculumTree();
                    }
                } else if (state.status === 'error') {
                    alert('⚠️ فشل في معالجة الملف: ' + state.message);
                    resetUploadBtn();
                } else {
                    // Still processing
                    btn.innerHTML = `<span>⏳ ${state.progress}% | ${state.status}</span>`;
                    desc.textContent = state.message || "جاري المعالجة بالذكاء الاصطناعي... قد يستغرق دقيقة أو أكثر";
                    setTimeout(() => pollTaskStatus(taskId, fileName), 2500); // poll every 2.5 seconds
                }
            } catch(e) {
                setTimeout(() => pollTaskStatus(taskId, fileName), 3000);
            }
        }

        function resetUploadBtn() {
            const btn = document.getElementById('btn_upload_pdf');
            const desc = document.getElementById('upload_status_desc');
            btn.disabled = false;
            btn.innerHTML = '<span>📄 رفع واستخراج المنهاج (PDF)</span>';
            document.getElementById('curriculum_pdf_input').value = '';
        }
"""

content = re.sub(r'async function handleRealPdfUpload\(input\) \{.*?(?=async function selectLesson|function renderCurriculumTree)', new_script + '\n        ', content, flags=re.DOTALL)

with open("backend/app/Views/CurriculumStudio.php", "w") as f:
    f.write(content)