chapters.py

import json
from server import *

@job_handler('probe', 'probe-raw')
def import_xmp_chapters(jobid, jobtype, data, state, status):
	if 'lecture_id' not in data or not data.get('import-chapters', False):
		return
	times = set()
	# Only add new chapters, deleted chapters are taken into account here
	for chapter in query('SELECT * FROM chapters WHERE lecture_id = ?', data['lecture_id']):
		for offset in range(5):
			times.add(chapter['time']-offset)
			times.add(chapter['time']+offset)
	for chapter in status.get('xmp_chapters', []):
		if int(chapter['time']) in times:
			continue
		modify('INSERT INTO chapters (lecture_id, time, text, visible, time_created, time_updated) VALUES (?, ?, ?, 0, ?, ?)',
				data['lecture_id'], int(chapter['time']), chapter['text'],
				datetime.now(), datetime.now())

@app.route('/internal/newchapter/<int:lectureid>', methods=['POST', 'GET'])
def suggest_chapter(lectureid):
	time = request.values['time']
	text = request.values['text']
	assert(time and text)
	try:
		x = datetime.strptime(time,'%H:%M:%S')
		time= timedelta(hours=x.hour,minutes=x.minute,seconds=x.second).total_seconds()
		time = int(time)
	except ValueError:
		if 'ref' in request.values:
			flash('Falsches Zeitformat, "%H:%M:%S" wird erwartet. Z.B. "01:39:42" für eine Kapitel bei Stunde 1, Minute 39, Sekunde 42')
			return redirect(request.values['ref'])
		return 'Wrong time format, "%H:%M:%S" is expected',  400
		
	submitter = None
	if not ismod():
		submitter = request.environ['REMOTE_ADDR']
	lecture = query('SELECT * FROM lectures WHERE id = ?', lectureid)[0]
	course = query('SELECT * FROM courses WHERE id = ?', lecture['course_id'])[0]
	id = modify('INSERT INTO chapters (lecture_id, time, text, time_created, time_updated, created_by, submitted_by) VALUES (?, ?, ?, ?, ?, ?, ?)',
				lectureid, time, text, datetime.now(), datetime.now(), session.get('user', {'dbid':None})['dbid'], submitter)
	chapter = query('SELECT * FROM chapters WHERE id = ?', id)[0]
	notify_mods('chapter_submitted', course['id'], course=course, lecture=lecture, chapter=chapter)
	if 'ref' in request.values:
		return redirect(request.values['ref'])
	return 'OK', 200

@app.route('/internal/chapters/<int:lectureid>')
def chapters(lectureid):
	chapters = query("SELECT * FROM chapters WHERE lecture_id = ? AND NOT deleted AND (visible OR ?) ORDER BY time DESC", lectureid, ismod())
	if not chapters:
		return 'No chapters found', 404
	last = None
	for c in chapters:
		c['start'] = c['time']
		c['end'] = last['start'] if last else 9999
		last = c
	if 'json' in request.values:
		return Response(json.dumps([{'time': c['time'], 'text': c['text']} for c in chapters]), mimetype='application/json')
	return Response(render_template('chapters.srt',chapters=chapters), 200, {'Content-Type':'text/vtt'})