# @name: resources.py # @creation_date: 2022-02-23 # @license: The MIT License # @author: Simon Bowie # @purpose: functions for resources # @acknowledgements: # isbntools: https://isbntools.readthedocs.io/en/latest/info.html # regex for URLs: https://gist.github.com/gruber/249502 from flask import Blueprint, render_template, request, flash, redirect, url_for from .models import Resource from werkzeug.exceptions import abort from . import db from .relationships import * from isbntools.app import * import requests import re # function to retrieve data about a single resource from the database def get_resource(resource_id): resource = Resource.query.filter_by(id=resource_id).first() if resource is None: abort(404) return resource # function to retrieve data about a resource and its relationships def get_full_resource(resource_id): resource = get_resource(resource_id) resource = append_relationships(resource) if resource.type == 'book': book_data = get_book_data(resource.isbn) if book_data: resource.__dict__.update(book_data) return resource # function to delete a single resource def delete_resource(resource_id): deletion = Resource.query.get(resource_id) db.session.delete(deletion) db.session.commit() flash('Successfully deleted!') # function to get filters for a specific field def get_filter_values(field, type): # get field values for filter field_filter = Resource.query.filter_by(type=type).with_entities(getattr(Resource, field)) # turn SQLAlchemy object into list field_filter = [i for i, in field_filter] # split each element on '/' (useful for scriptingLanguage only) field_filter = [y for x in field_filter for y in x.split(' / ')] # consolidate duplicate values field_filter = list(dict.fromkeys(field_filter)) # filter None values from list field_filter = filter(None, field_filter) # sort list by alphabetical order field_filter = sorted(field_filter) return field_filter # function to get book data including metadata and covers def get_book_data(isbn): try: book = meta(isbn) description = {'desc': desc(isbn)} book.update(description) # get highest-resolution book cover possible openl_url = 'https://covers.openlibrary.org/b/isbn/' + book['ISBN-13'] + '-L.jpg?default=false' request = requests.get(openl_url) if request.status_code != 200: book.update(cover(isbn)) else: book_cover = {'thumbnail': openl_url} book.update(book_cover) return book except: pass # function to get full metadata for a book and combine into one object # TO BE DELETED def get_book(resource_id): book = get_resource(resource_id) book_data = get_book_data(book.isbn) book.__dict__.update(book_data) return book # function to replace embedded URL strings with href links def replace_urls(input): # Compile a regular expression to match URLs. # This regular expression is not exhaustive and may not match all possible URLs. # It is intended to be a starting point and can be refined and expanded as needed. url_regex = re.compile(r'((?:https?:(?:/{1,3}|[a-z0-9%])|[a-z0-9.\-]+[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|Ja|sk|sl|sm|sn|so|sr|ss|st|su|sv|sx|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)/)(?:[^\s()<>{}\[\]]+|\([^\s()]*?\([^\s()]+\)[^\s()]*?\)|\([^\s]+?\))+(?:\([^\s()]*?\([^\s()]+\)[^\s()]*?\)|\([^\s]+?\)|[^\s`!()\[\]{};:\'\".,<>?«»“”‘’])|(?:(? tag. # If the URL does not include a protocol (e.g. "http://" or "https://"), # then add "http://" as the default protocol. if not url.startswith('http'): link = f'{url}' else: link = f'{url}' # Replace the URL in the original string with the HTML link. input = input.replace(url, link) return input