Refactoring

matweb/frontend.py

@@ -0,0 +1,77 @@
+import hmac
+import os
+
+from flask import Blueprint, render_template, url_for, current_app, after_this_request, send_from_directory, request, \
+    flash
+from werkzeug.utils import secure_filename, redirect
+
+from matweb import file_removal_scheduler, utils
+
+routes = Blueprint('routes', __name__)
+
+
+@routes.route('/info')
+def info():
+    utils.get_supported_extensions()
+    return render_template(
+        'info.html', extensions=utils.get_supported_extensions()
+    )
+
+
+@routes.route('/download/<string:key>/<string:filename>')
+def download_file(key: str, filename: str):
+    if filename != secure_filename(filename):
+        return redirect(url_for('routes.upload_file'))
+
+    complete_path, filepath = utils.get_file_paths(filename, current_app.config['UPLOAD_FOLDER'])
+    file_removal_scheduler.run_file_removal_job(current_app.config['UPLOAD_FOLDER'])
+
+    if not os.path.exists(complete_path):
+        return redirect(url_for('routes.upload_file'))
+    if hmac.compare_digest(utils.hash_file(complete_path), key) is False:
+        return redirect(url_for('routes.upload_file'))
+
+    @after_this_request
+    def remove_file(response):
+        if os.path.exists(complete_path):
+            os.remove(complete_path)
+        return response
+    return send_from_directory(current_app.config['UPLOAD_FOLDER'], filepath, as_attachment=True)
+
+
+@routes.route('/', methods=['GET', 'POST'])
+def upload_file():
+    utils.check_upload_folder(current_app.config['UPLOAD_FOLDER'])
+    mime_types = utils.get_supported_extensions()
+
+    if request.method == 'POST':
+        if 'file' not in request.files:  # check if the post request has the file part
+            flash('No file part')
+            return redirect(request.url)
+
+        uploaded_file = request.files['file']
+        if not uploaded_file.filename:
+            flash('No selected file')
+            return redirect(request.url)
+
+        filename, filepath = utils.save_file(uploaded_file, current_app.config['UPLOAD_FOLDER'])
+        parser, mime = utils.get_file_parser(filepath)
+
+        if parser is None:
+            flash('The type %s is not supported' % mime)
+            return redirect(url_for('routes.upload_file'))
+
+        meta = parser.get_meta()
+
+        if parser.remove_all() is not True:
+            flash('Unable to clean %s' % mime)
+            return redirect(url_for('routes.upload_file'))
+
+        key, meta_after, output_filename = utils.cleanup(parser, filepath, current_app.config['UPLOAD_FOLDER'])
+
+        return render_template(
+            'download.html', mimetypes=mime_types, meta=meta, filename=output_filename, meta_after=meta_after, key=key
+        )
+
+    max_file_size = int(current_app.config['MAX_CONTENT_LENGTH'] / 1024 / 1024)
+    return render_template('index.html', max_file_size=max_file_size, mimetypes=mime_types)