Add delete corpora function and function to view an delete foreign jobs and corpora.

app/main/views.py

-from app.utils import background_delete_job
+from app.utils import background_delete_job, background_delete_corpus
 from flask import (abort, current_app, flash, redirect, request,
                    render_template, url_for, send_from_directory)
 from flask_login import current_user, login_required
 from . import main
 from .forms import CreateCorpusForm
 from .. import db
-from ..models import Corpus
+from ..models import Corpus, Job
 import os
 import threading
 
@@ -18,13 +18,16 @@ def index():
 @main.route('/corpora/<int:corpus_id>')
 @login_required
 def corpus(corpus_id):
-    corpus = current_user.corpora.filter_by(id=corpus_id).first()
+    if (current_user.is_administrator()):
+        corpus = Corpus.query.get_or_404(corpus_id)
+    else:
+        corpus = current_user.corpora.filter_by(id=corpus_id).first()
     if not corpus:
         print('Corpus not found.')
         abort(404)
 
     dir = os.path.join(current_app.config['OPAQUE_STORAGE_DIRECTORY'],
-                       str(current_user.id),
+                       str(corpus.user_id),
                        'corpora',
                        str(corpus.id))
     files = {}
@@ -42,12 +45,15 @@ def corpus(corpus_id):
 @login_required
 def corpus_download(corpus_id):
     file = request.args.get('file')
-    corpus = current_user.corpora.filter_by(id=corpus_id).first()
+    if (current_user.is_administrator()):
+        corpus = Corpus.query.get_or_404(corpus_id)
+    else:
+        corpus = current_user.corpora.filter_by(id=corpus_id).first()
     if not file or not corpus:
         print('File not found.')
         abort(404)
     dir = os.path.join(current_app.config['OPAQUE_STORAGE_DIRECTORY'],
-                       str(current_user.id),
+                       str(corpus.user_id),
                        'corpora',
                        str(corpus.id))
     return send_from_directory(as_attachment=True,
@@ -91,13 +97,16 @@ def dashboard():
 @main.route('/jobs/<int:job_id>')
 @login_required
 def job(job_id):
-    job = current_user.jobs.filter_by(id=job_id).first()
+    if (current_user.is_administrator()):
+        job = Job.query.get_or_404(job_id)
+    else:
+        job = current_user.jobs.filter_by(id=job_id).first()
     if not job:
         print('Job not found.')
         abort(404)
 
     dir = os.path.join(current_app.config['OPAQUE_STORAGE_DIRECTORY'],
-                       str(current_user.id),
+                       str(job.user_id),
                        'jobs',
                        str(job.id))
     files = {}
@@ -126,12 +135,15 @@ def job(job_id):
 @login_required
 def job_download(job_id):
     file = request.args.get('file')
-    job = current_user.jobs.filter_by(id=job_id).first()
+    if (current_user.is_administrator()):
+        job = Job.query.get_or_404(job_id)
+    else:
+        job = current_user.jobs.filter_by(id=job_id).first()
     if not file or not job:
         print('File not found.')
         abort(404)
     dir = os.path.join(current_app.config['OPAQUE_STORAGE_DIRECTORY'],
-                       str(current_user.id),
+                       str(job.user_id),
                        'jobs',
                        str(job.id))
     return send_from_directory(as_attachment=True,
@@ -149,3 +161,15 @@ def delete_job(job_id):
     delete_thread.start()
     flash('Job has been deleted!')
     return redirect(url_for('main.dashboard'))
+
+
+@main.route('/corpora/<int:corpus_id>/delete')
+@login_required
+def delete_corpus(corpus_id):
+    delete_thread = threading.Thread(
+        target=background_delete_corpus,
+        args=(current_app._get_current_object(), corpus_id)
+    )
+    delete_thread.start()
+    flash('Corpus has been deleted!')
+    return redirect(url_for('main.dashboard'))

app/models.py

@@ -8,7 +8,6 @@ from datetime import datetime
 import os
 import shutil
 import logging
-import time
 
 
 class Permission:
@@ -357,6 +356,20 @@ class Corpus(db.Model):
                 'title': self.title,
                 'user_id': self.user_id}
 
+    def delete_corpus(self):
+        logger = logging.getLogger(__name__)
+        delete_path = os.path.join('/mnt/opaque/', str(self.user_id), 'corpora',
+                                   str(self.id))
+        logger.warning('Delete path is: {}'.format(delete_path))
+        while os.path.exists(delete_path):
+            try:
+                shutil.rmtree(delete_path, ignore_errors=True)
+                logger.warning('Path does still exist.')
+            except OSError:
+                pass
+        db.session.delete(self)
+        db.session.commit()
+
 
 '''
 ' Flask-Login is told to use the application’s custom anonymous user by setting

app/templates/main/corpora/corpus.html.j2

@@ -2,18 +2,36 @@
 
 {% block page_content %}
 <script>
-  var CORPUS_ID = {{ corpus.id }}
+  var corpus_user_id = {{ corpus.user_id|tojson|safe }}
+  socket.emit('inspect_user', {{ corpus_user_id }});
+</script>
+<script>
+  var CORPUS_ID = {{ corpus.id|tojson|safe }}
+  var foreignCorpusFlag;
+  {% if current_user.id == corpus.user_id %}
+    foreignCorpusFlag = false;
+  {% else %}
+    foreignCorpusFlag = true;
+  {% endif %}
 
   class InformationUpdater {
     constructor(corpusId) {
       this.corpusId = corpusId;
-      corporaSubscribers.push(this);
+      if (foreignCorpusFlag) {
+        foreignCorpusSubscribers.push(this);
+      } else {
+        corporaSubscribers.push(this);
+      }
     }
 
     _init() {
       var creationDateElement, descriptionElement, titleElement;
 
-      this.corpus = corpora[this.corpusId];
+      if (foreignCorpusFlag) {
+        this.corpus = foreignCorpora[this.corpusId];
+      } else {
+        this.corpus = corpora[this.corpusId];
+      }
       creationDateElement = document.getElementById("creation-date");
       creationDateElement.value = (new Date(this.corpus.creation_date * 1000)).toLocaleString();
       descriptionElement = document.getElementById("description");
@@ -62,6 +80,21 @@
 <div class="col s12 m4">
   <h3 id="title"></h3>
   <p id="description"></p>
+  <h2>Actions:</h2>
+  <!-- Confirm deletion of job with modal dialogue
+  Modal Trigger-->
+  <a href="#modal-confirm-delete" class="waves-effect waves-light btn red modal-trigger"><i class="material-icons left">delete</i>Delete Corpus</a>
+  <!-- Modal Strucutre -->
+  <div id="modal-confirm-delete" class="modal">
+    <div class="modal-content">
+      <h4>Confirm deletion</h4>
+        <p>Do you really want to delete the Corpus {{corpus.title}}?
+        All files will be permanently deleted.</p>
+    </div>
+    <div class="modal-footer">
+      <a href="{{ url_for('main.delete_corpus', corpus_id=corpus.id) }}" class="modal-close waves-effect waves-green btn red"><i class="material-icons left">delete</i>Delete Corpus</a></a>
+    </div>
+  </div>
 </div>
 
 <div class="col s12 m8">

app/templates/main/jobs/job.html.j2

@@ -2,12 +2,26 @@
 
 {% block page_content %}
 <script>
-  var JOB_ID = {{ job.id }}
+  var job_user_id = {{ job.user_id|tojson|safe }}
+  socket.emit('inspect_user', job_user_id);
+</script>
+<script>
+  var JOB_ID = {{ job.id|tojson|safe }}
+  var foreignJobFlag;
+  {% if current_user.id == job.user_id %}
+    foreignJobFlag = false;
+  {% else %}
+    foreignJobFlag = true;
+  {% endif %}
 
   class InformationUpdater {
     constructor(jobId) {
       this.jobId = jobId;
-      jobsSubscribers.push(this);
+      if (foreignJobFlag) {
+        foreignJobsSubscribers.push(this);
+      } else {
+        jobsSubscribers.push(this);
+      }
     }
 
     _init() {
@@ -15,7 +29,11 @@
           memMbElement, nCoresElement, serviceElement, serviceArgsElement,
           serviceVersionElement, statusColor, statusElement, titleElement;
 
-      this.job = jobs[this.jobId];
+      if (foreignJobFlag) {
+        this.job = foreignJobs[this.jobId];
+      } else {
+        this.job = jobs[this.jobId];
+      }
       creationDateElement = document.getElementById("creation-date");
       creationDateElement.value = (new Date(this.job.creation_date * 1000)).toLocaleString();
       descriptionElement = document.getElementById("description");

app/utils.py

-from .models import Job, User
+from .models import Job, User, Corpus
 from . import db
 import logging
 
@@ -15,6 +15,7 @@ def background_delete_user(app, current_user_id):
         logger.warning('Called by delete_thread.')
         logger.warning('User id is: {}.'.format(current_user_id))
         jobs = Job.query.filter_by(user_id=current_user_id).all()
+        corpora = Corpus.query.filter_by(user_id=current_user_id).all()
         logger.warning('Jobs to delete are: {}'.format(jobs))
         user = User.query.get_or_404(current_user_id)
         for job in jobs:
@@ -29,7 +30,10 @@ def background_delete_user(app, current_user_id):
                     logger.warning('Job status is deleted.')
                     job.delete_job()
                     deleted = True
-            logger.warning('Loop has ended.')
+            logger.warning('Job deletion loop has ended.')
+        for corpus in corpora:
+            corpus.delete_corpus()
+            logger.warning('Corpus deletion loop has ended.')
         user.delete_user()
 
 
@@ -51,3 +55,13 @@ def background_delete_job(app, job_id):
                 job.delete_job()
                 deleted = True
         logger.warning('Loop has ended.')
+
+
+def background_delete_corpus(app, corpus_id):
+    logger = logging.getLogger(__name__)
+    with app.app_context():
+        logger.warning('Called by delete_thread.')
+        logger.warning('Corpus id is: {}.'.format(corpus_id))
+        corpus = Corpus.query.filter_by(id=corpus_id).first()
+        logger.warning('Corpus object is: {}'.format(corpus))
+        corpus.delete_corpus()