#
# Flask/Werkzeug handler example code
#
# Please note that this is not a complete application, just some example code about how
# to interact with jQuery-File-Upload and how to create the json responses it expects.
#
# (c) 2011 by Thomas Waldmann
# Licensed under MIT license.

from flask import request, url_for, jsonify

#           vvvvvvvv  this is the URL you need for action= in index.html of the demo app
@app.route('/+upload', methods=['GET', 'POST'])
def upload():
    if request.method == 'GET':
        # we are expected to return a list of dicts with infos about the already available files:
        file_infos = []
        for file_name in list_files():
            file_url = url_for('download', file_name=file_name)
            file_size = get_file_size(file_name)
            file_infos.append(dict(name=file_name,
                                   size=file_size,
                                   url=file_url))
        return jsonify(files=file_infos)

    if request.method == 'POST':
        # we are expected to save the uploaded file and return some infos about it:
        #                              vvvvvvvvv   this is the name for input type=file
        data_file = request.files.get('data_file')
        file_name = data_file.filename
        save_file(data_file, file_name)
        file_size = get_file_size(file_name)
        file_url = url_for('download', file_name=file_name)
        # providing the thumbnail url is optional
        thumbnail_url = url_for('thumbnail', file_name=file_name)
        return jsonify(name=file_name,
                       size=file_size,
                       url=file_url,
                       thumbnail=thumbnail_url)