325 lines
12 KiB
Python
325 lines
12 KiB
Python
import os
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from datetime import datetime as dt, timezone as tz
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from flask import request, redirect, url_for, flash, render_template, Blueprint, session, current_app
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from flask_security import roles_accepted, current_user
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from sqlalchemy import desc
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from sqlalchemy.orm import joinedload
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from werkzeug.datastructures import FileStorage
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from werkzeug.utils import secure_filename
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from sqlalchemy.exc import SQLAlchemyError
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import requests
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from requests.exceptions import SSLError
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from urllib.parse import urlparse
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import io
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from common.models.document import Document, DocumentLanguage, DocumentVersion
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from common.extensions import db
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from .document_forms import AddDocumentForm, AddURLForm
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from common.utils.middleware import mw_before_request
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from common.utils.celery_utils import current_celery
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document_bp = Blueprint('document_bp', __name__, url_prefix='/document')
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@document_bp.before_request
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def before_request():
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mw_before_request()
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@document_bp.route('/add_document', methods=['GET', 'POST'])
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@roles_accepted('Super User', 'Tenant Admin')
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def add_document():
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form = AddDocumentForm()
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# If the form is submitted
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if request.method == 'POST' and form.validate_on_submit():
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current_app.logger.info(f'Adding document for tenant {session["tenant"]["id"]}')
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file = form.file.data
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filename = secure_filename(file.filename)
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extension = filename.rsplit('.', 1)[1].lower()
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create_document_stack(form, file, filename, extension)
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return redirect(url_for('document_bp.documents'))
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return render_template('document/add_document.html', form=form)
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@document_bp.route('/add_url', methods=['GET', 'POST'])
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@roles_accepted('Super User', 'Tenant Admin')
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def add_url():
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form = AddURLForm()
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# If the form is submitted
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if request.method == 'POST' and form.validate_on_submit():
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current_app.logger.info(f'Adding document for tenant {session["tenant"]["id"]}')
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url = form.url.data
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html = fetch_html(url)
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file = io.StringIO(html)
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parsed_url = urlparse(url)
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path_parts = parsed_url.path.split('/')
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filename = path_parts[-1]
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if filename == '':
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filename = 'index'
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if not filename.endswith('.html'):
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filename += '.html'
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extension = 'html'
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create_document_stack(form, file, filename, extension)
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return redirect(url_for('document_bp.documents'))
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return render_template('document/add_url.html', form=form)
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@document_bp.route('/documents', methods=['GET', 'POST'])
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@roles_accepted('Super User', 'Tenant Admin')
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def documents():
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page = request.args.get('page', 1, type=int)
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per_page = request.args.get('per_page', 10, type=int)
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query = Document.query.order_by(desc(Document.created_at)).options(
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joinedload(Document.languages).joinedload(DocumentLanguage.versions))
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pagination = query.paginate(page=page, per_page=per_page, error_out=False)
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docs = pagination.items
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rows = prepare_document_data(docs)
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return render_template('document/documents.html', rows=rows, pagination=pagination)
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@document_bp.route('/process_version/<int:version_id>', methods=['POST'])
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@roles_accepted('Super User', 'Tenant Admin')
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def process_version(version_id):
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version = DocumentVersion.query.get_or_404(version_id)
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if not version.processing:
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print(f'Placeholder for processing version: {version_id}')
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return redirect(url_for('documents'))
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def set_logging_information(obj, timestamp):
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obj.created_at = timestamp
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obj.updated_at = timestamp
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obj.created_by = current_user.id
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obj.updated_by = current_user.id
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def create_document_stack(form, file, filename, extension):
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# Create the Document
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new_doc = create_document(form, filename)
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# Create the DocumentLanguage
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new_doc_lang = create_language_for_document(new_doc, form.language.data, form.user_context.data)
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# Create the DocumentVersion
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new_doc_vers = DocumentVersion()
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new_doc_vers.document_language = new_doc_lang
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set_logging_information(new_doc_vers, dt.now(tz.utc))
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try:
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db.session.add(new_doc)
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db.session.add(new_doc_lang)
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db.session.add(new_doc_vers)
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log_session_state(db.session, "Before first commit")
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db.session.commit()
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log_session_state(db.session, "After first commit")
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except SQLAlchemyError as e:
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current_app.logger.error(f'Error adding document for tenant {session["tenant"]["id"]}: {e}')
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flash('Error adding document.', 'error')
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db.session.rollback()
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error = e.args
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raise
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except Exception as e:
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current_app.logger.error('Unknown error')
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raise
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try:
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new_doc_lang = db.session.merge(new_doc_lang)
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new_doc_vers = db.session.merge(new_doc_vers)
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new_doc_lang.latest_version_id = new_doc_vers.id
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log_session_state(db.session, "Before second commit")
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db.session.commit()
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log_session_state(db.session, "After second commit")
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except SQLAlchemyError as e:
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current_app.logger.error(f'Error adding document for tenant {session["tenant"]["id"]}: {e}')
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flash('Error adding document.', 'error')
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db.session.rollback()
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error = e.args
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raise
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except Exception as e:
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current_app.logger.error(f'Error adding document for tenant {session["tenant"]["id"]}: {e}')
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flash('Error adding document.', 'error')
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db.session.rollback()
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error = e.args
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raise
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current_app.logger.info(f'Document added successfully for tenant {session["tenant"]["id"]}, '
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f'Document Version {new_doc.id}')
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upload_file_for_version(new_doc_vers, file, extension)
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task = current_celery.send_task('create_embeddings', queue='embeddings', args=[
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session['tenant']['id'],
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new_doc_vers.id,
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session['default_embedding_model'],
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])
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current_app.logger.info(f'Embedding creation started for tenant {session["tenant"]["id"]}, '
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f'Document Version {new_doc_vers.id}. '
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f'Embedding creation task: {task.id}')
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def log_session_state(session, msg=""):
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current_app.logger.debug(f"{msg} - Session dirty: {session.dirty}")
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current_app.logger.debug(f"{msg} - Session new: {session.new}")
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def create_document(form, filename):
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new_doc = Document()
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if form.name.data == '':
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new_doc.name = filename.rsplit('.', 1)[0]
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else:
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new_doc.name = form.name.data
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if form.valid_from.data or form.valid_from.data != '':
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new_doc.valid_from = form.valid_from.data
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else:
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new_doc.valid_from = dt.now(tz.utc)
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new_doc.tenant_id = session['tenant']['id']
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set_logging_information(new_doc, dt.now(tz.utc))
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return new_doc
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def create_language_for_document(document, language, user_context):
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new_doc_lang = DocumentLanguage()
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if language == '':
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new_doc_lang.language = session['default_language']
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else:
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new_doc_lang.language = language
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if user_context != '':
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new_doc_lang.user_context = user_context
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new_doc_lang.document = document
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set_logging_information(new_doc_lang, dt.now(tz.utc))
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return new_doc_lang
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def upload_file_for_version(doc_vers, file, extension):
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doc_vers.file_type = extension
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doc_vers.file_name = doc_vers.calc_file_name()
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doc_vers.file_location = doc_vers.calc_file_location()
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upload_path = os.path.join(current_app.config['UPLOAD_FOLDER'], doc_vers.file_location)
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if not os.path.exists(upload_path):
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os.makedirs(upload_path, exist_ok=True)
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if isinstance(file, FileStorage):
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file.save(os.path.join(upload_path, doc_vers.file_name))
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elif isinstance(file, io.StringIO):
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# It's a StringIO object, handle accordingly
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# Example: write content to a file manually
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content = file.getvalue()
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with open(os.path.join(upload_path, doc_vers.file_name), 'w', encoding='utf-8') as file:
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file.write(content)
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else:
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raise TypeError('Unsupported file type.')
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try:
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db.session.commit()
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except SQLAlchemyError as e:
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db.session.rollback()
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flash('Error saving document.', 'error')
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current_app.logger.error(
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f'Error saving document for tenant {session["tenant"]["id"]} while uploading file: {error}')
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current_app.logger.info(f'Succesfully saved document for tenant {session['tenant']['id']} for '
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f'document version {doc_vers.id} while uploading file.')
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def fetch_html(url):
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# Fetches HTML content from a URL
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try:
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response = requests.get(url)
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except SSLError as e:
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current_app.logger.error(f"Error fetching HTML from {url} for tenant {session['tenant']['id']}. "
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f"Error Encountered: {e}")
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if current_app.config.get('DEBUG'): # only allow when in a development environment
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current_app.logger.info(f"Skipping SSL verification for {url} for tenant {session['tenant']['id']}. "
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f"Only while in development environment.")
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response = requests.get(url, verify=False) # Disable SSL verification
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else:
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response = None
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response.raise_for_status() # Will raise an exception for bad requests
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return response.text
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# Sample code for adding or updating versions and ensuring latest_version is set in DocumentLanguage
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# def add_or_update_version(language_id, version_data):
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# new_version = Version(language_id=language_id, **version_data)
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# db.session.add(new_version)
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# db.session.flush() # Ensures new_version gets an ID assigned if it's new
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#
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# # Assuming we always call this when we know it's the latest
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# language = Language.query.get(language_id)
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# language.latest_version_id = new_version.id
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# db.session.commit()
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# sample code for using latest_version in the application
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# @app.route('/language/<int:language_id>')
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# def show_language(language_id):
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# language = Language.query.get_or_404(language_id)
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# latest_version = language.latest_version # This is now a direct, efficient database access
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# return render_template('language_details.html', language=language, latest_version=latest_version)
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def prepare_document_data(docs):
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rows = []
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for doc in docs:
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doc_row = [{'value': doc.name, 'class': '', 'type': 'text'},
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{'value': doc.created_at.strftime("%Y-%m-%d %H:%M:%S"), 'class': '', 'type': 'text'}]
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# Document basic details
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if doc.valid_from:
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doc_row.append({'value': doc.valid_from.strftime("%Y-%m-%d"), 'class': '', 'type': 'text'})
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else:
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doc_row.append({'value': '', 'class': '', 'type': 'text'})
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# Nested languages and versions
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languages_rows = []
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for lang in doc.languages:
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lang_row = [{'value': lang.language, 'class': '', 'type': 'text'}]
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# Latest version details if available (should be available ;-) )
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if lang.latest_version:
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lang_row.append({'value': lang.latest_version.created_at.strftime("%Y-%m-%d %H:%M:%S"),
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'class': '', 'type': 'text'})
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if lang.latest_version.url:
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lang_row.append({'value': lang.latest_version.url,
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'class': '', 'type': 'link', 'href': lang.latest_version.url})
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else:
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lang_row.append({'value': '', 'class': '', 'type': 'text'})
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if lang.latest_version.file_name:
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lang_row.append({'value': lang.latest_version.file_name, 'class': '', 'type': 'text'})
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else:
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lang_row.append({'value': '', 'class': '', 'type': 'text'})
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if lang.latest_version.file_type:
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lang_row.append({'value': lang.latest_version.file_type, 'class': '', 'type': 'text'})
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else:
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lang_row.append({'value': '', 'class': '', 'type': 'text'})
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# Include other details as necessary
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languages_rows.append(lang_row)
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doc_row.append({'is_group': True, 'colspan': '4',
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'headers': ['Language', 'Latest Version', 'URL', 'File Name', 'Type'],
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'sub_rows': languages_rows})
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rows.append(doc_row)
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return rows
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