refactor: integrate core functionality into CHSIConverter class

app.py

@@ -1,122 +1,19 @@
-from flask import Flask, request, render_template, send_from_directory, make_response
-from werkzeug.utils import secure_filename
+from flask import Flask, render_template
+from utils import CHSIConverter
 import os
-from add_float_picture import add_float_picture
-from extract_img import extract_image_from_pdf
-from extract_info import extract_info_from_pdf
-from docx import Document
-from docx.shared import Inches, Pt
-from docx.enum.table import WD_ALIGN_VERTICAL
-from docx.oxml import parse_xml
-import uuid
-import shutil
 
 app = Flask(__name__)
 
-def convert_to_docx(path):
-    try:
-        extracted_info = extract_info_from_pdf(path)
-        doc = Document("static/template.docx")
-
-        paragraph = doc.add_paragraph()
-        doc.element.body.insert(1, paragraph._element)
-        paragraph.alignment = 1
-        paragraph.add_run('Update date:' + extracted_info['Update Date'])
-
-        del extracted_info['Update Date']
-
-        table = doc.add_table(rows=1, cols=2)
-        table.autofit = False
-
-        for cell in table.columns[0].cells:
-            cell.width = Inches(0.5)
-        for cell in table.columns[1].cells:
-            cell.width = Inches(5.0)
-
-        border_xml = '<w:tcBorders xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">' \
-                    '<w:top w:val="nil"/>' \
-                    '<w:left w:val="nil"/>' \
-                    '<w:bottom w:val="nil"/>' \
-                    '<w:right w:val="nil"/>' \
-                    '</w:tcBorders>'
-
-        for key, value in extracted_info.items():
-            cells = table.add_row().cells
-            for cell in cells:
-                cell._element.get_or_add_tcPr().append(parse_xml(border_xml))
-                cell.vertical_alignment = WD_ALIGN_VERTICAL.CENTER
-
-            is_last = key == list(extracted_info.keys())[-1]
-            cells[0].text = key + ("" if is_last else "\n") 
-            cells[1].text = value + ("" if is_last else "\n")
-
-        cropped_image_1 = extract_image_from_pdf(path, 1, 1898, 583, 2230, 1026)
-        add_float_picture(doc.add_paragraph(), cropped_image_1, width=Inches(1.2), pos_x=Pt(430), pos_y=Pt(140))
-
-        cropped_image_2 = extract_image_from_pdf(path, 1, 300, 2690, 630, 2985)
-        add_float_picture(doc.add_paragraph(), cropped_image_2, width=Inches(1.2), pos_x=Pt(78), pos_y=Pt(643))
-
-        output_path = path.replace(".pdf", ".docx")
-        doc.save(output_path)
-
-        return output_path
-
-    except Exception as e:
-        return make_response(f"<script>alert('Error during DOCX conversion: {e}'); window.location.href = document.referrer;</script>")
-
 @app.route('/')
 def home():
     return render_template('index.html')
 
 @app.route('/convert', methods=['POST'])
-def convert_file():
-    if 'file' not in request.files:
-        return make_response("<script>alert('缺少文件部分'); window.location.href = document.referrer;</script>")
-
-    file = request.files['file']
-    if file.filename == '':
-        return make_response("<script>alert('没有选中的文件'); window.location.href = document.referrer;</script>")
-
-    if not file.filename.lower().endswith('.pdf'):
-        return make_response("<script>alert('只接受 PDF 文件'); window.location.href = document.referrer;</script>")
-
-    if not file.filename.startswith('教育部学籍在线验证报告_'):
-        return make_response("<script>alert('请不要传入无关文件'); window.location.href = document.referrer;</script>")
-
-    try:
-        filename = secure_filename(file.filename)
-        filepath = os.path.join(os.getcwd(), 'upload', filename)
-        file.save(filepath)
-
-        output_path = convert_to_docx(filepath)
-
-        directory = os.path.dirname(output_path)
-        filename = os.path.basename(output_path)
-        output_filename = str(uuid.uuid4()) + '.docx'
-
-        response = make_response(send_from_directory(directory, filename, as_attachment=True))
-        response.headers["Content-Disposition"] = f"attachment; filename={output_filename}"
-
-        # 隐私处理
-        upload_folder = os.path.join(os.getcwd(), 'upload')
-        for filename in os.listdir(upload_folder):
-            if filename != '.gitkeep': 
-                file_path = os.path.join(upload_folder, filename)
-                try:
-                    if os.path.isfile(file_path) or os.path.islink(file_path):
-                        os.unlink(file_path)
-                    elif os.path.isdir(file_path):
-                        shutil.rmtree(file_path)
-                except Exception as e:
-                    print(f"Failed to delete {file_path}. Reason: {e}")
-
-        return response
-    except Exception as e:
-        return make_response(f"<script>alert('处理文件时发生错误: {e}'); window.location.href = document.referrer;</script>")
+def handle_convert():
+    return CHSIConverter.convert_file()
 
 if __name__ == '__main__':
-    # debug_mode = os.getenv('FLASK_DEBUG', 'false').lower() == 'true'
     port = int(os.getenv('FLASK_PORT', 5001))
     app.run(debug=True, port=port, host='0.0.0.0')
 else:
-    application=app
+    application = app