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# -*- coding: utf-8 -*-
import os
from flask import render_template, flash, redirect, url_for, current_app
from werkzeug.utils import secure_filename
from app import db
from app.admin import bp
from app.admin.datasets import get_name_from_dataset, md5sum
from app.admin.decorators import admin_required
from app.admin.forms import AdminManageTaskForm, AdminAddDatasetForm
from app.models import User, Dataset, Task, Annotation
@bp.route("/manage", methods=("GET", "POST"))
@admin_required
def manage():
user_list = [(u.id, u.username) for u in User.query.all()]
dataset_list = [(d.id, d.name) for d in Dataset.query.all()]
form = AdminManageTaskForm()
form.username.choices = user_list
form.dataset.choices = dataset_list
if form.validate_on_submit():
user = User.query.filter_by(id=form.username.data).first()
if user is None:
flash("User does not exist.", "error")
return redirect(url_for("admin.manage"))
dataset = Dataset.query.filter_by(id=form.dataset.data).first()
if dataset is None:
flash("Dataset does not exist.", "error")
return redirect(url_for("admin.manage"))
action = None
if form.assign.data:
action = "assign"
elif form.delete.data:
action = "delete"
else:
flash(
"Internal error: no button is true but form was submitted.",
"error",
)
return redirect(url_for("admin.manage"))
task = Task.query.filter_by(
annotator_id=user.id, dataset_id=dataset.id
).first()
if task is None:
if action == "delete":
flash("Can't delete a task that doesn't exist.", "error")
return redirect(url_for("admin.manage"))
else:
task = Task(annotator_id=user.id, dataset_id=dataset.id)
db.session.add(task)
db.session.commit()
flash("Task registered successfully.", "success")
else:
if action == "assign":
flash("Task assignment already exists.", "error")
return redirect(url_for("admin.manage"))
else:
# delete annotations too
for ann in Annotation.query.filter_by(task_id=task.id).all():
db.session.delete(ann)
db.session.delete(task)
db.session.commit()
flash("Task deleted successfully.", "success")
tasks = Task.query.all()
return render_template(
"admin/manage.html", title="Assign Task", form=form, tasks=tasks
)
@bp.route("/add", methods=("GET", "POST"))
@admin_required
def add_dataset():
tmp_dir = os.path.join(
current_app.instance_path, current_app.config["TEMP_DIR"]
)
dataset_dir = os.path.join(
current_app.instance_path, current_app.config["DATASET_DIR"]
)
form = AdminAddDatasetForm()
if form.validate_on_submit():
temp_filename = os.path.join(
tmp_dir, secure_filename(form.file_.data.filename)
)
if not os.path.exists(temp_filename):
flash("Internal error: temporary dataset disappeared.", "error")
return redirect(url_for("admin.add_dataset"))
name = get_name_from_dataset(temp_filename)
target_filename = os.path.join(dataset_dir, name + ".json")
if os.path.exists(target_filename):
flash("Internal error: file already exists!", "error")
return redirect(url_for("admin.add_dataset"))
os.rename(temp_filename, target_filename)
if not os.path.exists(target_filename):
flash("Internal error: file moving failed", "error")
return redirect(url_for("admin.add_dataset"))
dataset = Dataset(name=name, md5sum=md5sum(target_filename))
db.session.add(dataset)
db.session.commit()
flash("Dataset %r added successfully." % name, "success")
return redirect(url_for("admin.add_dataset"))
return render_template("admin/add.html", title="Add Dataset", form=form)
@bp.route("/", methods=("GET",))
@admin_required
def index():
return render_template("admin/index.html", title="Admin Home")
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