schedule/feeds: make json feed schema compatible

apps/base/tasks_export.py

@@ -131,8 +131,13 @@ def export_db(table):
         return
 
     with app.test_client() as client:
-        for file_type in ["frab", "json", "ics"]:
-            url = f"/schedule/{year}.{file_type}"
+        for file_type, file_url in (
+            ("frab", f"frab-{year}.xml"),
+            ("frab_json", f"frab-{year}.json"),
+            ("json", f"{year}.json"),
+            ("ics", f"{year}.ics"),
+        ):
+            url = f"/schedule/{file_url}"
             dest_path = os.path.join(path, "public", f"schedule.{file_type}")
             response = client.get(url)
             if response.status_code != 200:

apps/schedule/__init__.py

@@ -57,7 +57,7 @@ def lineup_talk_redirect(year, proposal_id, slug=None):
 def feed_redirect(fmt):
     routes = {
         "json": "schedule.schedule_json",
-        "frab": "schedule.schedule_frab",
+        "frab": "schedule.schedule_frab_xml",
         "ical": "schedule.schedule_ical",
         "ics": "schedule.schedule_ical",
     }

apps/schedule/feeds.py

@@ -1,6 +1,6 @@
 import json
 from icalendar import Calendar, Event
-from flask import request, abort, current_app as app, Response
+from flask import request, abort, current_app as app, redirect, url_for, Response
 from flask_cors import cross_origin
 from flask_login import current_user
 
@@ -9,6 +9,7 @@
 from models.cfp import Proposal
 
 from ..common import feature_flag, feature_enabled, json_response
+from .schedule_json import export_frab_json
 from .schedule_xml import export_frab
 from .historic import feed_historic
 from .data import (
@@ -34,9 +35,9 @@ def _format_event_description(event):
         venue_str = event["venue"]
         if event["map_link"]:
             venue_str = f'{venue_str} ({event["map_link"]})'
-        footer_block.append(f'Venue: {venue_str}')
+        footer_block.append(f"Venue: {venue_str}")
     if footer_block:
-        description += '\n\n' + '\n'.join(footer_block)
+        description += "\n\n" + "\n".join(footer_block)
 
     return description
 
@@ -47,7 +48,7 @@ def schedule_json(year):
     if year != event_year():
         return feed_historic(year, "json")
 
-    if not feature_enabled('SCHEDULE'):
+    if not feature_enabled("SCHEDULE"):
         abort(404)
 
     schedule = [_convert_time_to_str(p) for p in _get_scheduled_proposals(request.args)]
@@ -56,12 +57,51 @@ def schedule_json(year):
     return Response(json.dumps(schedule), mimetype="application/json")
 
 
+@schedule.route("/schedule/frab-<int:year>.json")
+def schedule_frab_json(year):
+    if year != event_year():
+        return feed_historic(year, "frab_json")
+
+    if not feature_enabled("SCHEDULE"):
+        abort(404)
+
+    schedule = (
+        Proposal.query.filter(
+            Proposal.is_accepted,
+            Proposal.scheduled_time.isnot(None),
+            Proposal.scheduled_venue_id.isnot(None),
+            Proposal.scheduled_duration.isnot(None),
+        )
+        .order_by(Proposal.scheduled_time)
+        .all()
+    )
+
+    return Response(
+        json.dumps(
+            {
+                "schedule": export_frab_json(schedule),
+                "$schema": "https://c3voc.de/schedule/schema.json",
+                "generator": {
+                    "name": "emfcamp-website",
+                    "url": "https://github.com/emfcamp/Website",
+                },
+            }
+        ),
+        mimetype="application/json",
+    )
+
+
 @schedule.route("/schedule/<int:year>.frab")
 def schedule_frab(year):
+    return redirect(url_for("schedule_frab_xml", year=year), code=301)
+
+
+@schedule.route("/schedule/frab-<int:year>.xml")
+def schedule_frab_xml(year):
     if year != event_year():
         return feed_historic(year, "frab")
 
-    if not feature_enabled('SCHEDULE'):
+    if not feature_enabled("SCHEDULE"):
         abort(404)
 
     schedule = (
@@ -88,7 +128,7 @@ def schedule_ical(year):
     if year != event_year():
         return feed_historic(year, "ics")
 
-    if not feature_enabled('SCHEDULE'):
+    if not feature_enabled("SCHEDULE"):
         abort(404)
 
     schedule = _get_scheduled_proposals(request.args)
@@ -174,9 +214,7 @@ def favourites_ical():
 
 @schedule.route("/schedule/now-and-next.json")
 def now_and_next_json():
-    return Response(
-        json.dumps(_get_upcoming(request.args)), mimetype="application/json"
-    )
+    return Response(json.dumps(_get_upcoming(request.args)), mimetype="application/json")
 
 
 @schedule.route("/schedule/<int:year>/<int:proposal_id>.json")

apps/schedule/schedule_json.py

@@ -0,0 +1,128 @@
+from datetime import timedelta
+from math import ceil
+
+from main import external_url
+from models import event_end, event_start, event_year
+
+from . import event_tz
+from .schedule_xml import get_day_start_end, get_duration
+
+
+def events_per_day_and_room(schedule):
+    days = {
+        current_date.date(): {
+            "index": index + 1,
+            "start": get_day_start_end(event_start() + timedelta(days=index))[0],
+            "end": get_day_start_end(event_start() + timedelta(days=index))[1],
+            "rooms": {},
+        }
+        for index, current_date in enumerate(
+            event_start() + timedelta(days=i) for i in range((event_end() - event_start()).days + 1)
+        )
+    }
+
+    for proposal in schedule:
+        talk_date = proposal.start_date.date()
+        if proposal.start_date.hour < 4 and talk_date != event_start().date():
+            talk_date -= timedelta(days=1)
+        if talk_date not in days:
+            # Event is outside the scheduled event duration.
+            continue
+        if proposal.scheduled_venue.name not in days[talk_date]:
+            days[talk_date][proposal.scheduled_venue.name] = [proposal]
+        else:
+            days[talk_date][proposal.scheduled_venue.name].append(proposal)
+
+    return days.values()
+
+
+def export_frab_json(schedule):
+    duration_days = ceil((event_end() - event_end()).total_seconds / 86400)
+
+    rooms = set([proposal.scheduled_venue.name for proposal in schedule])
+
+    schedule_json = {
+        "version": "1.0-public",
+        "conference": {
+            "acronym": "emf{}".format(event_year()),
+            "days": [],
+            "daysCount": duration_days,
+            "end": event_end().strftime("%Y-%m-%d"),
+            "rooms": [
+                {
+                    "name": room,
+                }
+                for room in sorted(rooms)
+            ],
+            "start": event_start().strftime("%Y-%m-%d"),
+            "time_zone_name": event_tz,
+            "timeslot_duration": "00:10",
+            "title": "Electromagnetic Field {}".format(event_year()),
+            "url": external_url("main"),
+        },
+    }
+
+    for day in events_per_day_and_room:
+        day_schedule = {
+            "date": day["start"].strftime("%Y-%m-%d"),
+            "day_end": day["start"].isoformat(),
+            "day_start": day["end"].isoformat(),
+            "index": day["index"],
+            "rooms": {},
+        }
+        for room, events in sorted(day["rooms"].items()):
+            day_schedule["rooms"][room] = []
+            for proposal in events:
+                links = {
+                    proposal.c3voc_url,
+                    proposal.youtube_url,
+                    proposal.thumbnail_url,
+                    proposal.map_link,
+                }
+                links.discard(None)
+                links.discard("")
+                day_schedule["rooms"][room].append(
+                    {
+                        "abstract": None,  # The proposal model does not implement abstracts
+                        "attachments": [],
+                        "date": event_tz.localize(proposal.start_date).isoformat(),
+                        "description": proposal.description,
+                        "do_not_record": proposal.video_privacy != "public",
+                        "duration": get_duration(proposal.start_date, proposal.end_date),
+                        "guid": None,
+                        "id": proposal.id,
+                        # This assumes there will never be a non-english talk,
+                        # which is probably fine for a conference in the UK.
+                        "language": "en",
+                        "links": sorted(links),
+                        "persons": [
+                            {
+                                "name": name.strip(),
+                                "public_name": name.strip(),
+                            }
+                            for name in (proposal.published_names or proposal.user.name).split(",")
+                        ],
+                        "recording_license": "CC BY-SA 3.0",
+                        "room": room,
+                        "slug": "emf{}-{}-{}".format(
+                            event_year(),
+                            proposal.id,
+                            proposal.slug,
+                        ),
+                        "start": event_tz.localize(proposal.start_date).strftime("%H:%M"),
+                        "subtitle": None,
+                        "title": proposal.display_title,
+                        # Contrary to the infobeamer frab module, the json module does not allow users to set colours
+                        # for tracks themselves. It instead relies on the schedule itself to provide those colours.
+                        "track": None,
+                        "type": proposal.type,
+                        "url": external_url(
+                            ".item",
+                            year=event_year(),
+                            proposal_id=proposal.id,
+                            slug=proposal.slug,
+                        ),
+                    }
+                )
+        schedule_json["conference"]["days"].append(day_schedule)
+    return schedule_json

templates/schedule/line-up.html

@@ -17,6 +17,10 @@ <h2>Line-up</h2>
     <p>You can also get this list as an <a href="{{ url_for('.schedule_ical', year=event_year) }}">iCal feed</a>
        for your calendar, and a <a href="{{ url_for('.schedule_json', year=event_year) }}">json feed</a> for your giant robot.
     </p>
+    <p>If you use an app for viewing the schedule, you might be looking for a
+        <a href="{{ url_for('.schedule_frab_json', year=year) }}">Frab JSON</a> or
+        <a href="{{ url_for('.schedule_frab_xml', year=year) }}">Frab XML</a> feed.
+    </p>
     {% endif %}
   {% else %}
   <div class="alert alert-info">

templates/schedule/user_schedule.html

@@ -14,7 +14,8 @@
     <strong>Schedule feeds:</strong>
     <a href="{{ url_for('.schedule_json', year=year) }}">JSON</a> |
     <a href="{{ url_for('.schedule_ical', year=year) }}">iCal</a> |
-    <a href="{{ url_for('.schedule_frab', year=year) }}">Frab</a>
+    <a href="{{ url_for('.schedule_frab_json', year=year) }}">Frab JSON</a> |
+    <a href="{{ url_for('.schedule_frab_xml', year=year) }}">Frab XML</a>
   </p>
 {% endblock %}
 {% block foot %}