tasks.py 23.3 KB
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from flask import render_template

import os
import subprocess
import shutil
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import tempfile
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from datetime import datetime
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import traceback
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from models.database import Document, Protocol, Error, Todo, Decision, TOP, DefaultTOP, MeetingReminder, TodoMail, DecisionDocument, TodoState, OldTodo
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from models.errors import DateNotMatchingException
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from server import celery, app
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from shared import db, escape_tex, unhyphen, date_filter, datetime_filter, date_filter_long, date_filter_short, time_filter, class_filter, KNOWN_KEYS
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from utils import mail_manager, url_manager, encode_kwargs, decode_kwargs, add_line_numbers, set_etherpad_text, get_etherpad_text
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from parser import parse, ParserException, Element, Content, Text, Tag, Remark, Fork, RenderType
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from wiki import WikiClient, WikiException
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from calendarpush import Client as CalendarClient, CalendarException
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from legacy import lookup_todo_id, import_old_todos
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import config

texenv = app.create_jinja_environment()
texenv.block_start_string = r"\ENV{"
texenv.block_end_string = r"}"
texenv.variable_start_string = r"\VAR{"
texenv.variable_end_string = r"}"
texenv.comment_start_string = r"\COMMENT{"
texenv.comment_end_string = r"}"
texenv.filters["escape_tex"] = escape_tex
texenv.filters["unhyphen"] = unhyphen
texenv.trim_blocks = True
texenv.lstrip_blocks = True
texenv.filters["url_complete"] = url_manager.complete
texenv.filters["datify"] = date_filter
texenv.filters["datify_long"] = date_filter_long
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texenv.filters["datify_short"] = date_filter_short
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texenv.filters["datetimify"] = datetime_filter
texenv.filters["timify"] = time_filter
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texenv.filters["class"] = class_filter
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mailenv = app.create_jinja_environment()
mailenv.trim_blocks = True
mailenv.lstrip_blocks = True
mailenv.filters["url_complete"] = url_manager.complete
mailenv.filters["datify"] = date_filter
mailenv.filters["datetimify"] = datetime_filter

ID_FIELD_BEGINNING = "id "

def parse_protocol(protocol, **kwargs):
    parse_protocol_async.delay(protocol.id, encode_kwargs(kwargs))

@celery.task
def parse_protocol_async(protocol_id, encoded_kwargs):
    with app.app_context():
        with app.test_request_context("/"):
            try:
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                kwargs = decode_kwargs(encoded_kwargs)
                protocol = Protocol.query.filter_by(id=protocol_id).first()
                if protocol is None:
                    raise Exception("No protocol given. Aborting parsing.")
                parse_protocol_async_inner(protocol, encoded_kwargs)
            except Exception as exc:
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                stacktrace = traceback.format_exc()
                error = protocol.create_error("Parsing", "Exception",
                    "{}\n\n{}".format(str(exc), stacktrace))
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                db.session.add(error)
                db.session.commit()
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def parse_protocol_async_inner(protocol, encoded_kwargs):
    old_errors = list(protocol.errors)
    for error in old_errors:
        protocol.errors.remove(error)
    db.session.commit()
    if protocol.source is None:
        error = protocol.create_error("Parsing", "Protocol source is None", "")
        db.session.add(error)
        db.session.commit()
        return
    tree = None
    try:
        tree = parse(protocol.source)
    except ParserException as exc:
        context = ""
        if exc.linenumber is not None:
            source_lines = protocol.source.splitlines()
            start_index = max(0, exc.linenumber - config.ERROR_CONTEXT_LINES)
            end_index = min(len(source_lines) - 1, exc.linenumber + config.ERROR_CONTEXT_LINES)
            context = "\n".join(source_lines[start_index:end_index])
        if exc.tree is not None:
            context += "\n\nParsed syntax tree was:\n" + str(exc.tree.dump())
        error = protocol.create_error("Parsing", str(exc), context)
        db.session.add(error)
        db.session.commit()
        return
    remarks = {element.name: element for element in tree.children if isinstance(element, Remark)}
    required_fields = KNOWN_KEYS
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    for default_meta in protocol.protocoltype.metas:
        required_fields.append(default_meta.key)
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    if not config.PARSER_LAZY:
        missing_fields = [field for field in required_fields if field not in remarks]
        if len(missing_fields) > 0:
            error = protocol.create_error("Parsing", "Missing fields", ", ".join(missing_fields))
            db.session.add(error)
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            db.session.commit()
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            return
    try:
        protocol.fill_from_remarks(remarks)
    except ValueError:
        error = protocol.create_error(
            "Parsing", "Invalid fields",
            "Date or time fields are not '%d.%m.%Y' respectively '%H:%M', "
            "but rather {}".format(
            ", ".join([
                remarks["Datum"].value.strip(),
                remarks["Beginn"].value.strip(),
                remarks["Ende"].value.strip()
            ])))
        db.session.add(error)
        db.session.commit()
        return
    except DateNotMatchingException as exc:
        error = protocol.create_error("Parsing", "Date not matching",
            "This protocol's date should be {}, but the protocol source says {}.".format(date_filter(exc.original_date) if exc.original_date is not None else "not present", date_filter(exc.protocol_date) if exc.protocol_date is not None else "not present"))
        db.session.add(error)
        db.session.commit()
        return
    # todos
    protocol.delete_orphan_todos()
    db.session.commit()
    old_todos = list(protocol.todos)
    for todo in old_todos:
        protocol.todos.remove(todo)
    db.session.commit()
    tags = tree.get_tags()
    todo_tags = [tag for tag in tags if tag.name == "todo"]
    for todo_tag in todo_tags:
        if len(todo_tag.values) < 2:
            error = protocol.create_error("Parsing", "Invalid todo-tag",
                "The todo tag in line {} needs at least "
                "information on who and what, "
                "but has less than that.".format(todo_tag.linenumber))
            db.session.add(error)
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            db.session.commit()
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            return
        who = todo_tag.values[0]
        what = todo_tag.values[1]
        field_id = None
        field_state = None
        field_date = None
        for other_field in todo_tag.values[2:]:
            other_field = other_field.strip()
            if len(other_field) == 0:
                continue
            if other_field.startswith(ID_FIELD_BEGINNING):
                try:
                    field_id = int(other_field[len(ID_FIELD_BEGINNING):])
                except ValueError:
                    error = protocol.create_error("Parsing", "Non-numerical todo ID",
                    "The todo in line {} has a nonnumerical ID, but needs "
                    "something like \"id 1234\"".format(todo_tag.linenumber))
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                    db.session.add(error)
                    db.session.commit()
                    return
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            else:
                try:
                    field_state = TodoState.from_name(other_field)
                except ValueError:
                    try:
                        field_date = datetime.strptime(other_field, "%d.%m.%Y")
                    except ValueError:
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                        try:
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                            field_state, field_date = TodoState.from_name_with_date(other_field.strip(), protocol=protocol)
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                        except ValueError:
                            try:
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                                field_state = TodoState.from_name_lazy(other_field)
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                            except ValueError:
                                error = protocol.create_error("Parsing",
                                "Invalid field",
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                                "The todo in line {} has the field '{}', but "
                                "this does neither match a date (\"%d.%m.%Y\") "
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                                "nor a state.".format(
                                    todo_tag.linenumber, other_field))
                                db.session.add(error)
                                db.session.commit()
                                return
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        if field_state is None:
            field_state = TodoState.open
        if field_state.needs_date() and field_date is None:
            error = protocol.create_error("Parsing",
                "Todo missing date",
                "The todo in line {} has a state that needs a date, "
                "but the todo does not have one.".format(todo_tag.linenumber))
            db.session.add(error)
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            db.session.commit()
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            return
        who = who.strip()
        what = what.strip()
        todo = None
        if field_id is not None:
            todo = Todo.query.filter_by(number=field_id).first()
            if todo is None and not config.PARSER_LAZY:
                # TODO: add non-strict mode (at least for importing old protocols)
                error = protocol.create_error("Parsing",
                "Invalid Todo ID",
                "The todo in line {} has the ID {}, but there is no "
                "Todo with that ID.".format(todo_tag.linenumber, field_id))
                db.session.add(error)
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                db.session.commit()
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                return
        if todo is None:
            protocol_key = protocol.get_identifier()
            old_candidates = OldTodo.query.filter(
                OldTodo.protocol_key == protocol_key).all()
            if len(old_candidates) == 0:
                # new protocol
                todo = Todo(type_id=protocol.protocoltype.id,
                    who=who, description=what, state=field_state,
                    date=field_date)
                db.session.add(todo)
                db.session.commit()
                todo.number = field_id or todo.id
                db.session.commit()
            else:
                # old protocol
                number = field_id or lookup_todo_id(old_candidates, who, what)
                todo = Todo.query.filter_by(number=number).first()
                if todo is None:
                    todo = Todo(type_id=protocol.protocoltype.id,
                        who=who, description=what, state=field_state,
                        date=field_date, number=number)
                    db.session.add(todo)
                    db.session.commit()
        todo.protocols.append(protocol)
        todo.state = field_state
        todo.date = field_date
        db.session.commit()
        todo_tag.todo = todo
    # Decisions
    old_decisions = list(protocol.decisions)
    for decision in old_decisions:
        protocol.decisions.remove(decision)
    db.session.commit()
    decision_tags = [tag for tag in tags if tag.name == "beschluss"]
    for decision_tag in decision_tags:
        if len(decision_tag.values) == 0:
            error = protocol.create_error("Parsing", "Empty decision found.",
                "The decision in line {} is empty.".format(decision_tag.linenumber))
            db.session.add(error)
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            db.session.commit()
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            return
        decision = Decision(protocol_id=protocol.id, content=decision_tag.values[0])
        db.session.add(decision)
        db.session.commit()
        decision_top = decision_tag.fork.get_top()
        decision_content = texenv.get_template("decision.tex").render(
            render_type=RenderType.latex, decision=decision,
            protocol=protocol, top=decision_top, show_private=False)
        maxdepth = decision_top.get_maxdepth()
        compile_decision(decision_content, decision, maxdepth=maxdepth)
    old_tops = list(protocol.tops)
    for top in old_tops:
        protocol.tops.remove(top)
    tops = []
    for index, fork in enumerate((child for child in tree.children if isinstance(child, Fork))):
        top = TOP(protocol.id, fork.name, index, False)
        db.session.add(top)
    db.session.commit()
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    render_kwargs = {
        "protocol": protocol,
        "tree": tree
    }
    maxdepth = tree.get_maxdepth()
    privacy_states = [False]
    content_private = render_template("protocol.txt", render_type=RenderType.plaintext, show_private=True, **render_kwargs)
    content_public = render_template("protocol.txt", render_type=RenderType.plaintext, show_private=False, **render_kwargs)
    if content_private != content_public:
        privacy_states.append(True)
    protocol.content_private = content_private
    protocol.content_public = content_public
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    for show_private in privacy_states:
        latex_source = texenv.get_template("protocol.tex").render(render_type=RenderType.latex, show_private=show_private, **render_kwargs)
        compile(latex_source, protocol, show_private=show_private, maxdepth=maxdepth)
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    if protocol.protocoltype.use_wiki:
        wiki_source = render_template("protocol.wiki", render_type=RenderType.wikitext, show_private=not protocol.protocoltype.wiki_only_public, **render_kwargs).replace("\n\n\n", "\n\n")
        push_to_wiki(protocol, wiki_source, "Automatisch generiert vom Protokollsystem 3.0")
    protocol.done = True
    db.session.commit()
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def push_to_wiki(protocol, content, summary):
    push_to_wiki_async.delay(protocol.id, content, summary)

@celery.task
def push_to_wiki_async(protocol_id, content, summary):
    with WikiClient() as wiki_client, app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        try:
            wiki_client.edit_page(
                title=protocol.get_wiki_title(),
                content=content,
                summary="Automatisch generiert vom Protokollsystem 3.")
        except WikiException as exc:
            error = protocol.create_error("Pushing to Wiki", "Pushing to Wiki failed.", str(exc))

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def compile(content, protocol, show_private, maxdepth):
   compile_async.delay(content, protocol.id, show_private=show_private, maxdepth=maxdepth)
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def compile_decision(content, decision, maxdepth):
    compile_async.delay(content, decision.id, use_decision=True, maxdepth=maxdepth)
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@celery.task
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def compile_async(content, protocol_id, show_private=False, use_decision=False, maxdepth=5):
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    with tempfile.TemporaryDirectory() as compile_dir, app.app_context():
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        decision = None
        protocol = None
        if use_decision:
            decision = Decision.query.filter_by(id=protocol_id).first()
            protocol = decision.protocol
        else:
            protocol = Protocol.query.filter_by(id=protocol_id).first()
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        try:
            current = os.getcwd()
            protocol_source_filename = "protocol.tex"
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            protocol_target_filename = "protocol.pdf"
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            log_filename = "protocol.log"
            with open(os.path.join(compile_dir, protocol_source_filename), "w") as source_file:
                source_file.write(content)
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            protocol2_class_source = texenv.get_template("protokoll2.cls").render(fonts=config.FONTS, maxdepth=maxdepth, bulletpoints=config.LATEX_BULLETPOINTS)
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            with open(os.path.join(compile_dir, "protokoll2.cls"), "w") as protocol2_class_file:
                protocol2_class_file.write(protocol2_class_source)
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            os.chdir(compile_dir)
            command = [
                "/usr/bin/xelatex",
                "-halt-on-error",
                "-file-line-error",
                protocol_source_filename
            ]
            subprocess.check_call(command, universal_newlines=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
            subprocess.check_call(command, universal_newlines=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
            os.chdir(current)
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            document = None
            if not use_decision:
                for old_document in [document for document in protocol.documents if document.is_compiled and document.is_private == show_private]:
                    protocol.documents.remove(old_document)
                db.session.commit()
                document = Document(protocol.id, name="protokoll{}_{}_{}.pdf".format("_intern" if show_private else "", protocol.protocoltype.short_name, date_filter_short(protocol.date)), filename="", is_compiled=True, is_private=show_private)
            else:
                document = DecisionDocument(decision.id, name="beschluss_{}_{}_{}.pdf".format(protocol.protocoltype.short_name, date_filter_short(protocol.date), decision.id), filename="")
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            db.session.add(document)
            db.session.commit()
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            target_filename = "compiled-{}-{}.pdf".format(document.id, "internal" if show_private else "public")
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            if use_decision:
                target_filename = "decision-{}-{}-{}.pdf".format(protocol.id, decision.id, document.id)
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            document.filename = target_filename
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            shutil.copy(os.path.join(compile_dir, protocol_target_filename), os.path.join(config.DOCUMENTS_PATH, target_filename))
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            db.session.commit()
        except subprocess.SubprocessError:
            log = ""
            total_log_filename = os.path.join(compile_dir, log_filename)
            if os.path.isfile(total_log_filename):
                with open(total_log_filename, "r") as log_file:
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                    log = "Log:\n\n" + add_line_numbers(log_file.read())
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            else:
                log = "Logfile not found."
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            total_source_filename = os.path.join(compile_dir, protocol_source_filename)
            if os.path.isfile(total_source_filename):
                with open(total_source_filename, "r") as source_file:
                    log += "\n\nSource:\n\n" + add_line_numbers(source_file.read())
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            error = protocol.create_error("Compiling", "Compiling LaTeX failed", log)
            db.session.add(error)
            db.session.commit()
        finally:
            os.chdir(current)
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def print_file(filename, protocol):
    if config.PRINTING_ACTIVE:
        print_file_async.delay(filename, protocol.id)

@celery.task
def print_file_async(filename, protocol_id):
    with app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        if protocol.protocoltype.printer is None:
            error = protocol.create_error("Printing", "No printer configured.", "You don't have any printer configured for the protocoltype {}. Please do so before printing a protocol.".format(protocol.protocoltype.name))
        try:
            command = [
                "/usr/bin/lpr",
                "-H", config.PRINTING_SERVER,
                "-P", protocol.protocoltype.printer,
                "-U", config.PRINTING_USER,
                "-T", protocol.get_identifier(),
            ]
            for option in config.PRINTING_PRINTERS[protocol.protocoltype.printer]:
                command.extend(["-o", '"{}"'.format(option) if " " in option else option])
            command.append(filename)
            subprocess.check_call(command, universal_newlines=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        except subprocess.SubprocessError:
            error = protocol.create_error("Printing", "Printing {} failed.".format(protocol.get_identifier()), "")
            db.session.add(error)
            db.session.commit()

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def send_reminder(reminder, protocol):
    send_reminder_async.delay(reminder.id, protocol.id)
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@celery.task
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def send_reminder_async(reminder_id, protocol_id):
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    with app.app_context():
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        reminder = MeetingReminder.query.filter_by(id=reminder_id).first()
        protocol = Protocol.query.filter_by(id=protocol_id).first()
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        reminder_text = render_template("reminder-mail.txt", reminder=reminder, protocol=protocol)
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        if reminder.send_public:
            send_mail(protocol, protocol.protocoltype.public_mail, "Tagesordnung der {}".format(protocol.protocoltype.name), reminder_text)
        if reminder.send_private:
            send_mail(protocol, protocol.protocoltype.private_mail, "Tagesordnung der {}".format(protocol.protocoltype.name), reminder_text)

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def send_protocol(protocol):
    send_protocol_async.delay(protocol.id, show_private=True)
    send_protocol_async.delay(protocol.id, show_private=False)
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    send_todomails_async.delay(protocol.id)
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@celery.task
def send_protocol_async(protocol_id, show_private):
    with app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        to_addr = protocol.protocoltype.private_mail if show_private else protocol.protocoltype.public_mail
        subject = "{}{}-Protokoll vom {}".format("Internes " if show_private else "", protocol.protocoltype.short_name, date_filter(protocol.date))
        mail_content = render_template("protocol-mail.txt", protocol=protocol)
        appendix = [(document.name, document.as_file_like())
            for document in protocol.documents
            if show_private or not document.is_private
        ]
        send_mail(protocol, to_addr, subject, mail_content, appendix)

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@celery.task
def send_todomails_async(protocol_id):
    with app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        all_todos = Todo.query.filter(Todo.done == False).all()
        users = {user for todo in all_todos for user in todo.get_users()}
        grouped_todos = {
            user: [todo for todo in all_todos if user in todo.get_users()]
            for user in users
        }
        subject = "Du hast noch was zu tun!"
        for user in users:
            todomail = TodoMail.query.filter(TodoMail.name.ilike(user)).first()
            if todomail is None:
                error = protocol.create_error("Sending Todomail", "Sending Todomail failed.", "User {} has no Todo-Mail-Assignment.".format(user))
                db.session.add(error)
                db.session.commit()
                continue
            to_addr = todomail.get_formatted_mail()
            mail_content = render_template("todo-mail.txt", protocol=protocol, todomail=todomail, todos=grouped_todos[user])
            send_mail(protocol, to_addr, subject, mail_content)
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def send_mail(protocol, to_addr, subject, content, appendix=None):
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    if to_addr is not None and len(to_addr.strip()) > 0:
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        send_mail_async.delay(protocol.id, to_addr, subject, content, appendix)
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@celery.task
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def send_mail_async(protocol_id, to_addr, subject, content, appendix):
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    with app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        try:
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            mail_manager.send(to_addr, subject, content, appendix)
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        except Exception as exc:
            error = protocol.create_error("Sending Mail", "Sending mail failed", str(exc))
            db.session.add(error)
            db.session.commit()
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def push_tops_to_calendar(protocol):
    push_tops_to_calendar_async.delay(protocol.id)

@celery.task
def push_tops_to_calendar_async(protocol_id):
    if not config.CALENDAR_ACTIVE:
        return
    with app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        if protocol.protocoltype.calendar == "":
            return
        description = render_template("calendar-tops.txt", protocol=protocol)
        try:
            client = CalendarClient(protocol.protocoltype.calendar)
            client.set_event_at(begin=protocol.get_datetime(),
                name=protocol.protocoltype.short_name, description=description)
        except CalendarException as exc:
            error = Protocol.create_error("Calendar",
                "Pushing TOPs to Calendar failed", str(exc))
            db.session.add(error)
            db.session.commit()
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def set_etherpad_content(protocol):
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    set_etherpad_content_async.delay(protocol.id)
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@celery.task
def set_etherpad_content_async(protocol_id):
    with app.app_context():
        protocol = Protocol.query.filter_by(id=protocol_id).first()
        set_etherpad_text(protocol.get_identifier(), protocol.get_template())