server.py 33.3 KB
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#!/usr/bin/env python3
import locale
locale.setlocale(locale.LC_TIME, "de_DE.utf8")

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from flask import Flask, g, current_app, request, session, flash, redirect, url_for, abort, render_template, Response, send_file
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from werkzeug.utils import secure_filename
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from flask_script import Manager, prompt
from flask_migrate import Migrate, MigrateCommand
#from flask_socketio import SocketIO
from celery import Celery
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from io import StringIO, BytesIO
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import os
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from datetime import datetime
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import math
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import config
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from shared import db, date_filter, datetime_filter, date_filter_long, time_filter, ldap_manager, security_manager, current_user, check_login, login_required, group_required, class_filter
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from utils import is_past, mail_manager, url_manager, get_first_unused_int, set_etherpad_text, get_etherpad_text
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from models.database import ProtocolType, Protocol, DefaultTOP, TOP, Document, Todo, Decision, MeetingReminder, Error
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from views.forms import LoginForm, ProtocolTypeForm, DefaultTopForm, MeetingReminderForm, NewProtocolForm, DocumentUploadForm, KnownProtocolSourceUploadForm, NewProtocolSourceUploadForm, ProtocolForm, TopForm, SearchForm
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from views.tables import ProtocolsTable, ProtocolTypesTable, ProtocolTypeTable, DefaultTOPsTable, MeetingRemindersTable, ErrorsTable, TodosTable, DocumentsTable, DecisionsTable
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app = Flask(__name__)
app.config.from_object(config)
db.init_app(app)
migrate = Migrate(app, db)
manager = Manager(app)
manager.add_command("db", MigrateCommand)

def make_celery(app, config):
    celery = Celery(app.import_name, broker=config.CELERY_BROKER_URL)
    celery.conf.update(app.config)
    return celery
celery = make_celery(app, config)

#def make_socketio(app, config):
#    socketio = SocketIO(app)
#    return socketio
#socketio = make_socketio(app, config)

app.jinja_env.trim_blocks = True
app.jinja_env.lstrip_blocks = True
app.jinja_env.filters["datify"] = date_filter
app.jinja_env.filters["datetimify"] = datetime_filter
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app.jinja_env.filters["timify"] = time_filter
app.jinja_env.filters["datify_long"] = date_filter_long
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app.jinja_env.filters["url_complete"] = url_manager.complete
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app.jinja_env.filters["class"] = class_filter
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app.jinja_env.tests["auth_valid"] = security_manager.check_user
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import tasks

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app.jinja_env.globals.update(check_login=check_login)
app.jinja_env.globals.update(current_user=current_user)
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app.jinja_env.globals.update(zip=zip)
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app.jinja_env.globals.update(min=min)
app.jinja_env.globals.update(max=max)
app.jinja_env.globals.update(dir=dir)
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# blueprints here

@app.route("/")
def index():
    return render_template("index.html")

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@login_required
@app.route("/types/list")
def list_types():
    is_logged_in = check_login()
    user = current_user()
    types = [
        protocoltype for protocoltype in ProtocolType.query.all()
        if (protocoltype.public_group in user.groups
        or protocoltype.private_group in user.groups
        or protocoltype.is_public)]
    types_table = ProtocolTypesTable(types)
    return render_template("types-list.html", types=types, types_table=types_table)

@app.route("/type/new", methods=["GET", "POST"])
@login_required
def new_type():
    form = ProtocolTypeForm()
    if form.validate_on_submit():
        user = current_user()
        if form.private_group.data not in user.groups:
            flash("Du kannst keinen internen Protokolltypen anlegen, zu dem du selbst keinen Zugang hast.", "alert-error")
        else:
            protocoltype = ProtocolType(form.name.data, form.short_name.data,
                form.organization.data, form.is_public.data,
                form.private_group.data, form.public_group.data,
                form.private_mail.data, form.public_mail.data)
            db.session.add(protocoltype)
            db.session.commit()
            flash("Der Protokolltyp {} wurde angelegt.".format(protocoltype.name), "alert-success")
        return redirect(request.args.get("next") or url_for("list_types"))
    return render_template("type-new.html", form=form)

@app.route("/type/edit/<int:type_id>", methods=["GET", "POST"])
@login_required
def edit_type(type_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_private_view_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = ProtocolTypeForm(obj=protocoltype)
    if form.validate_on_submit():
        if form.private_group.data not in user.groups:
            flash("Du kannst keinen internen Protokolltypen anlegen, zu dem du selbst keinen Zugang hast.", "alert-error")
        else:
            form.populate_obj(protocoltype)
            db.session.commit()
            return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))
    return render_template("type-edit.html", form=form, protocoltype=protocoltype)

@app.route("/type/show/<int:type_id>")
@login_required
def show_type(type_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_private_view_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    protocoltype_table = ProtocolTypeTable(protocoltype)
    default_tops_table = DefaultTOPsTable(protocoltype.default_tops, protocoltype)
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    reminders_table = MeetingRemindersTable(protocoltype.reminders, protocoltype)
    return render_template("type-show.html", protocoltype=protocoltype, protocoltype_table=protocoltype_table, default_tops_table=default_tops_table, reminders_table=reminders_table)

@app.route("/type/reminders/new/<int:type_id>", methods=["GET", "POST"])
@login_required
def new_reminder(type_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = MeetingReminderForm()
    if form.validate_on_submit():
        reminder = MeetingReminder(protocoltype.id, form.days_before.data, form.send_public.data, form.send_private.data)
        db.session.add(reminder)
        db.session.commit()
        return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))
    return render_template("reminder-new.html", form=form, protocoltype=protocoltype)

@app.route("/type/reminder/edit/<int:type_id>/<int:reminder_id>", methods=["GET", "POST"])
@login_required
def edit_reminder(type_id, reminder_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    reminder = MeetingReminder.query.filter_by(id=reminder_id).first()
    if reminder is None or reminder.protocoltype != protocoltype:
        flash("Invalide Erinnerung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = MeetingReminderForm(obj=reminder)
    if form.validate_on_submit():
        form.populate_obj(reminder)
        db.session.commit()
        return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))
    return render_template("reminder-edit.html", form=form, protocoltype=protocoltype, reminder=reminder)

@app.route("/type/reminder/delete/<int:type_id>/<int:reminder_id>")
@login_required
def delete_reminder(type_id, reminder_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    reminder = MeetingReminder.query.filter_by(id=reminder_id).first()
    if reminder is None or reminder.protocoltype != protocoltype:
        flash("Invalide Erinnerung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    db.session.delete(reminder)
    db.session.commit()
    return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))

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@app.route("/type/tops/new/<int:type_id>", methods=["GET", "POST"])
@login_required
def new_default_top(type_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = DefaultTopForm()
    if form.validate_on_submit():
        default_top = DefaultTOP(protocoltype.id, form.name.data, form.number.data)
        db.session.add(default_top)
        db.session.commit()
        flash("Der Standard-TOP {} wurde für dem Protokolltyp {} hinzugefügt.".format(default_top.name, protocoltype.name), "alert-success")
        return redirect(request.args.get("next") or url_for("index"))
    return render_template("default-top-new.html", form=form, protocoltype=protocoltype)

@app.route("/type/tops/edit/<int:type_id>/<int:top_id>", methods=["GET", "POST"])
@login_required
def edit_default_top(type_id, top_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    default_top = DefaultTOP.query.filter_by(id=top_id).first()
    if default_top is None or default_top.protocoltype != protocoltype:
        flash("Invalider Standard-TOP.", "alert-error")
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        return redirect(request.args.get("next") or url_for("index"))
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    form = DefaultTopForm(obj=default_top)
    if form.validate_on_submit():
        form.populate_obj(default_top)
        db.session.commit()
        return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))
    return render_template("default-top-edit.html", form=form, protocoltype=protocoltype, default_top=default_top)

@app.route("/type/tops/delete/<int:type_id>/<int:top_id>")
@login_required
def delete_default_top(type_id, top_id):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    default_top = DefaultTOP.query.filter_by(id=top_id).first()
    if default_top is None or default_top.protocoltype != protocoltype:
        flash("Invalider Standard-TOP.", "alert-error")
        return redirect(request.args.get("nexT") or url_for("index"))
    db.session.delete(default_top)
    db.session.commit()
    return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))

@app.route("/type/tops/move/<int:type_id>/<int:top_id>/<diff>/")
@login_required
def move_default_top(type_id, top_id, diff):
    protocoltype = ProtocolType.query.filter_by(id=type_id).first()
    if protocoltype is None:
        flash("Dieser Protokolltyp existiert nicht.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    user = current_user()
    if not protocoltype.has_modify_right(user):
        flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    default_top = DefaultTOP.query.filter_by(id=top_id).first()
    if default_top is None or default_top.protocoltype != protocoltype:
        flash("Invalider Standard-TOP.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
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    try:
        default_top.number += int(diff)
        db.session.commit()
    except ValueError:
        flash("Die angegebene Differenz ist keine Zahl.", "alert-error")
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    return redirect(request.args.get("next") or url_for("show_type", type_id=protocoltype.id))

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@app.route("/protocols/list")
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def list_protocols():
    is_logged_in = check_login()
    user = current_user()
    protocols = [
        protocol for protocol in Protocol.query.all()
        if (not is_logged_in and protocol.protocoltype.is_public)
        or (is_logged_in and (
            protocol.protocoltype.public_group in user.groups
            or protocol.protocoltype.private_group in user.groups))]
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    # TODO: sort by date and paginate
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    protocols_table = ProtocolsTable(protocols)
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    return render_template("protocols-list.html", protocols=protocols, protocols_table=protocols_table)
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@app.route("/protocol/new", methods=["GET", "POST"])
@login_required
def new_protocol():
    user = current_user()
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    protocoltypes = ProtocolType.get_modifiable_protocoltypes(user)
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    form = NewProtocolForm(protocoltypes)
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    upload_form = NewProtocolSourceUploadForm(protocoltypes)
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    if form.validate_on_submit():
        protocoltype = ProtocolType.query.filter_by(id=form.protocoltype.data).first()
        if protocoltype is None or not protocoltype.has_modify_right(user):
            flash("Dir fehlen die nötigen Zugriffsrechte.", "alert-error")
            return redirect(request.args.get("next") or url_for("index"))
        protocol = Protocol(protocoltype.id, form.date.data)
        db.session.add(protocol)
        db.session.commit()
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        return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))
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    type_id = request.args.get("type_id")
    if type_id is not None:
        form.protocoltype.data = type_id
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    return render_template("protocol-new.html", form=form, upload_form=upload_form, protocoltypes=protocoltypes)
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@app.route("/protocol/show/<int:protocol_id>")
def show_protocol(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_public_view_right(user):
        flash("Invalides Protokoll.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    errors_table = ErrorsTable(protocol.errors)
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    visible_documents = [
        document for document in protocol.documents
        if (not document.is_private and document.protocol.protocoltype.has_public_view_right(user))
        or (document.is_private and document.protocol.protocoltype.has_private_view_right(user))
    ]
    documents_table = DocumentsTable(visible_documents)
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    document_upload_form = DocumentUploadForm()
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    source_upload_form = KnownProtocolSourceUploadForm()
    return render_template("protocol-show.html", protocol=protocol, errors_table=errors_table, documents_table=documents_table, document_upload_form=document_upload_form, source_upload_form=source_upload_form)
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@app.route("/protocol/delete/<int:protocol_id>")
@login_required
def delete_protocol(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    name = protocol.get_identifier()
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    protocol.delete_orphan_todos()
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    db.session.delete(protocol)
    db.session.commit()
    flash("Protokoll {} ist gelöscht.".format(name), "alert-success")
    return redirect(request.args.get("next") or url_for("list_protocols"))

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@app.route("/protocol/etherpull/<int:protocol_id>")
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@login_required
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def etherpull_protocol(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
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    protocol.source = get_etherpad_text(protocol.get_identifier())
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    db.session.commit()
    tasks.parse_protocol(protocol)
    flash("Das Protokoll wird kompiliert.", "alert-success")
    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))

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@app.route("/protocol/upload/known/<int:protocol_id>", methods=["POST"])
@login_required
def upload_source_to_known_protocol(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = KnownProtocolSourceUploadForm()
    if form.validate_on_submit():
        if form.source.data is None:
            flash("Es wurde keine Datei ausgewählt.", "alert-error")
        else:
            file = form.source.data
            if file.filename == "":
                flash("Es wurde keine Datei ausgewählt.", "alert-error")
            else:
                # todo: Prüfen, ob es Text ist?
                source = file.stream.read().decode("utf-8")
                protocol.source = source
                db.session.commit()
                tasks.parse_protocol(protocol)
                flash("Das Protokoll wird kompiliert.", "alert-success")
    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))

@app.route("/protocol/upload/new/", methods=["POST"])
@login_required
def upload_new_protocol():
    user = current_user()
    available_types = [
        protocoltype for protocoltype in ProtocolType.query.all()
        if protocoltype.has_modify_right(user)
    ]
    form = NewProtocolSourceUploadForm(protocoltypes=available_types)
    if form.validate_on_submit():
        if form.source.data is None:
            flash("Es wurde keine Datei ausgewählt.", "alert-error")
        else:
            file = form.source.data
            if file.filename == "":
                flash("Es wurde keine Datei ausgewählt.", "alert-error")
            else:
                source = file.stream.read().decode("utf-8")
                protocoltype = ProtocolType.query.filter_by(id=form.protocoltype.data).first()
                if protocoltype is None or not protocoltype.has_modify_right(user):
                    flash("Invalider Protokolltyp oder keine Rechte.", "alert-error")
                else:
                    protocol = Protocol(protocoltype.id, None, source)
                    db.session.add(protocol)
                    db.session.commit()
                    tasks.parse_protocol(protocol)
                    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))
    return redirect(request.args.get("fail") or url_for("new_protocol"))

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@app.route("/protocol/source/<int:protocol_id>")
@login_required
def get_protocol_source(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    file_like = BytesIO(protocol.source.encode("utf-8"))
    return send_file(file_like, cache_timeout=1, as_attachment=True, attachment_filename="{}.txt".format(protocol.get_identifier()))

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@app.route("/protocol/template/<int:protocol_id>")
@login_required
def get_protocol_template(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    file_like = BytesIO(protocol.get_template().encode("utf-8"))
    return send_file(file_like, cache_timeout=1, as_attachment=True, attachment_filename="{}-template.txt".format(protocol.get_identifier()))

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@app.route("/protocol/etherpush/<int:protocol_id>")
@login_required
def etherpush_protocol(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    if set_etherpad_text(protocol.get_identifier(), protocol.get_template()):
        flash("Vorlage von {} in Etherpad hochgeladen.".format(protocol.get_identifier()), "alert-success")
    else:
        flash("Das Etherpad wurde bereits bearbeitet.", "alert-error")
    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))

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@app.route("/protocol/update/<int:protocol_id>", methods=["GET", "POST"])
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@login_required
def update_protocol(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
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    upload_form = KnownProtocolSourceUploadForm()
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    edit_form = ProtocolForm(obj=protocol)
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    if edit_form.validate_on_submit():
        edit_form.populate_obj(protocol)
        db.session.commit()
        return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))
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    return render_template("protocol-update.html", upload_form=upload_form, edit_form=edit_form, protocol=protocol)
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@app.route("/protocol/tops/new/<int:protocol_id>", methods=["GET", "POST"])
@login_required
def new_top(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
        flash("Invalides Protokoll oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = TopForm()
    if form.validate_on_submit():
        top = TOP(protocol_id=protocol.id, name=form.name.data, number=form.number.data, planned=True)
        db.session.add(top)
        db.session.commit()
        return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))
    else:
        print(form.number.data)
        current_numbers = list(map(lambda t: t.number, protocol.tops))
        suggested_number = get_first_unused_int(current_numbers)
        form.number.data = suggested_number
    return render_template("top-new.html", form=form, protocol=protocol)

@app.route("/protocol/top/edit/<int:top_id>", methods=["GET", "POST"])
@login_required
def edit_top(top_id):
    user = current_user()
    top = TOP.query.filter_by(id=top_id).first()
    if top is None or not top.protocol.protocoltype.has_modify_right(user):
        flash("Invalider TOP oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    form = TopForm(obj=top)
    if form.validate_on_submit():
        form.populate_obj(top)
        db.session.commit()
        return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=top.protocol.id))
    return render_template("top-edit.html", form=form, top=top)

@app.route("/protocol/top/delete/<int:top_id>")
@login_required
def delete_top(top_id):
    user = current_user()
    top = TOP.query.filter_by(id=top_id).first()
    if top is None or not top.protocol.protocoltype.has_modify_right(user):
        flash("Invalider TOP oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    name = top.name
    protocol_id = top.protocol.id
    db.session.delete(top)
    db.session.commit()
    flash("Der TOP {} wurde gelöscht.".format(name), "alert-success")
    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol_id))

@app.route("/protocol/top/move/<int:top_id>/<diff>")
@login_required
def move_top(top_id, diff):
    user = current_user()
    top = TOP.query.filter_by(id=top_id).first()
    if top is None or not top.protocol.protocoltype.has_modify_right(user):
        flash("Invalider TOP oder keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    try:
        top.number += int(diff)
        db.session.commit()
    except ValueError:
        flash("Die angegebene Differenz ist keine Zahl.", "alert-error")
    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=top.protocol.id))

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def _get_page():
    try:
        page = request.args.get("page")
        if page is None:
            return 0
        return int(page)
    except ValueError:
        return 0

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@app.route("/todos/list")
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def list_todos():
    is_logged_in = check_login()
    user = current_user()
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    protocoltype = None
    protocoltype_id = None
    try:
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        protocoltype_id = int(request.args.get("protocoltype"))
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    except (ValueError, TypeError):
        pass
    search_term = request.args.get("search")
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    protocoltypes = ProtocolType.get_public_protocoltypes(user)
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    search_form = SearchForm(protocoltypes)
    if protocoltype_id is not None:
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        search_form.protocoltype.data = protocoltype_id
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        protocoltype = ProtocolType.query.filter_by(id=protocoltype_id).first()
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    if search_term is not None:
        search_form.search.data = search_term
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    todos = [
        todo for todo in Todo.query.all()
        if todo.protocoltype.has_public_view_right(user)
    ]
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    if protocoltype_id is not None and protocoltype_id != -1:
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        todos = [
            todo for todo in todos
            if todo.protocoltype.id == protocoltype_id
        ]
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    if search_term is not None and len(search_term.strip()) > 0:
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        todos = [
            todo for todo in todos
            if search_term.lower() in todo.description.lower()
        ]
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    page = _get_page()
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    page_count = int(math.ceil(len(todos) / config.PAGE_LENGTH))
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    if page >= page_count:
        page = 0
    begin_index = page * config.PAGE_LENGTH
    end_index = (page + 1) * config.PAGE_LENGTH
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    todos = todos[begin_index:end_index]
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    todos_table = TodosTable(todos)
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    return render_template("todos-list.html", todos=todos, todos_table=todos_table, search_form=search_form, page=page, page_count=page_count, page_diff=config.PAGE_DIFF, protocoltype_id=protocoltype_id, search_term=search_term)
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@app.route("/decisions/list")
def list_decisions():
    is_logged_In = check_login()
    user = current_user()
    protocoltype = None
    protocoltype_id = None
    try:
        protocoltype_id = int(request.args.get("protocoltype"))
    except (ValueError, TypeError):
        pass
    search_term = request.args.get("search")
    protocoltypes = ProtocolType.get_public_protocoltypes(user)
    search_form = SearchForm(protocoltypes)
    if protocoltype_id is not None:
        search_form.protocoltype.data = protocoltype_id
        protocoltype = ProtocolType.query.filter_by(id=protocoltype_id).first()
    if search_term is not None:
        search_form.search.data = search_term
    decisions = [
        decision for decision in Decision.query.all()
        if decision.protocol.protocoltype.has_public_view_right(user)
    ]
    if protocoltype_id is not None and protocoltype_id != -1:
        decisions = [
            decision for decision in decisions 
            if decision.protocol.protocoltype.id == protocoltype_id
        ]
    if search_term is not None and len(search_term.strip()) > 0:
        decisions = [
            decision for decision in decisions
            if search_term.lower() in decision.content.lower()
        ]
    page = _get_page()
    page_count = int(math.ceil(len(decisions) / config.PAGE_LENGTH))
    if page >= page_count:
        page = 0
    begin_index = page * config.PAGE_LENGTH
    end_index = (page + 1) * config.PAGE_LENGTH
    decisions = decisions[begin_index:end_index]
    decisions_table = DecisionsTable(decisions)
    return render_template("decisions-list.html", decisions=decisions, decisions_table=decisions_table, search_form=search_form, page=page, page_count=page_count, page_diff=config.PAGE_DIFF, protocoltype_id=protocoltype_id, search_term=search_term)


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@app.route("/document/download/<int:document_id>")
def download_document(document_id):
    user = current_user()
    document = Document.query.filter_by(id=document_id).first()
    if document is None:
        flash("Invalides Dokument.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    if ((document.is_private
            and not document.protocol.protocoltype.has_private_view_right(user))
        or (not document.is_private
            and not document.protocol.protocoltype.has_public_view_right(user))):
        flash("Keine Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    with open(document.get_filename(), "rb") as file:
        file_like = BytesIO(file.read())
        return send_file(file_like, cache_timeout=1, as_attachment=True, attachment_filename=document.name)

@app.route("/document/upload/<int:protocol_id>", methods=["POST"])
@login_required
def upload_document(protocol_id):
    user = current_user()
    protocol = Protocol.query.filter_by(id=protocol_id).first()
    if protocol is None or not protocol.protocoltype.has_modify_right(user):
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        flash("Unzureichende Berechtigung.", "alert-error")
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        return redirect(request.args.get("next") or url_for("index"))
    form = DocumentUploadForm()
    if form.document.data is None:
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        flash("Es wurde keine Datei ausgewählt.", "alert-error")
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        return redirect(request.args.get("next") or url_for("index"))
    file = form.document.data
    if file.filename == "":
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        flash("Es wurde keine Datei ausgewählt.", "alert-error")
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        return redirect(request.args.get("next") or url_for("index"))
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    # todo: Dateitypen einschränken?
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    if file:
        filename = secure_filename(file.filename)
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        document = Document(protocol.id, filename, "", False, form.private.data)
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        db.session.add(document)
        db.session.commit()
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        internal_filename = "{}-{}-{}".format(protocol.id, document.id, filename)
        document.filename = internal_filename
        file.save(os.path.join(config.DOCUMENTS_PATH, internal_filename))
        if datetime.now().date() >= protocol.date:
            protocol.done = True
        db.session.commit()
    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))

@app.route("/document/delete/<int:document_id>")
@login_required
def delete_document(document_id):
    user = current_user()
    document = Document.query.filter_by(id=document_id).first()
    if document is None or not document.protocol.protocoltype.has_modify_right(user):
        flash("Unzureichende Berechtigung.", "alert-error")
        return redirect(request.args.get("next") or url_for("index"))
    name = document.name
    protocol = document.protocol
    db.session.delete(document)
    db.session.commit()
    flash("Das Dokument {} wurde gelöscht.".format(name), "alert-success")
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    return redirect(request.args.get("next") or url_for("show_protocol", protocol_id=protocol.id))
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@app.route("/login", methods=["GET", "POST"])
def login():
    if "auth" in session:
        flash("You are already logged in.", "alert-success")
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        return redirect(request.args.get("next") or url_for("index"))
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    form = LoginForm()
    if form.validate_on_submit():
        user = ldap_manager.login(form.username.data, form.password.data)
        if user is not None:
            session["auth"] = security_manager.hash_user(user)
            flash("Login successful, {}!".format(user.username), "alert-success")
            return redirect(request.args.get("next") or url_for("index"))
        else:
            flash("Wrong login data. Try again.", "alert-error")
    return render_template("login.html", form=form)
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@app.route("/logout")
@login_required
def logout():
    if "auth" in session:
        session.pop("auth")
    else:
        flash("You are not logged in.", "alert-error")
    return redirect(url_for(".index"))
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if __name__ == "__main__":
    manager.run()