import io import json import connexion from SpiffWorkflow.bpmn.PythonScriptEngine import PythonScriptEngine from flask import send_file from jinja2 import Template, UndefinedError from crc.api.common import ApiError from crc.scripts.complete_template import CompleteTemplate from crc.scripts.script import Script import crc.scripts from crc.services.mails import send_test_email from crc.services.workflow_processor import WorkflowProcessor def render_markdown(data, template): """ Provides a quick way to very that a Jinja markdown template will work properly on a given json data structure. Useful for folks that are building these markdown templates. """ try: template = Template(template) data = json.loads(data) return template.render(**data) except UndefinedError as ue: raise ApiError(code="undefined_field", message=ue.message) except Exception as e: raise ApiError(code="invalid_render", message=str(e)) def render_docx(): """ Provides a quick way to verify that a Jinja docx template will work properly on a given json data structure. Useful for folks that are building these templates. """ try: file = connexion.request.files['file'] data = connexion.request.form['data'] target_stream = CompleteTemplate().make_template(file, json.loads(data)) return send_file( io.BytesIO(target_stream.read()), as_attachment=True, attachment_filename="output.docx", mimetype="application/octet-stream", cache_timeout=-1 # Don't cache these files on the browser. ) except ValueError as e: raise ApiError(code="undefined_field", message=str(e)) except Exception as e: raise ApiError(code="invalid_render", message=str(e)) def list_scripts(): """Provides a list of scripts that can be called by a script task.""" scripts = Script.get_all_subclasses() script_meta = [] for script_class in scripts: script_meta.append( { "name": script_class.__name__, "description": script_class().get_description() }) return script_meta def send_email(address): """Just sends a quick test email to assure the system is working.""" if not address: address = "dan@sartography.com" return send_test_email(address, [address]) def evaluate_python_expression(body): """Evaluate the given python expression, returning it's result. This is useful if the front end application needs to do real-time processing on task data. If for instance there is a hide expression that is based on a previous value in the same form.""" try: # fixme: The script engine should be pulled from Workflow Processor, # but the one it returns overwrites the evaluate expression making it uncallable. script_engine = PythonScriptEngine() result = script_engine.evaluate(body['expression'], **body['data']) return {"result": result} except Exception as e: raise ApiError("expression_error", str(e))