+// Channels
+
+export const isChannelAdmin = (user, channel) =>
+ user && channel && user.channel_crews &&
+ user.channel_crews.find(c => c.role === 'admin' && c.channel_id === channel.id);
+
+// Episodes
+
+export const isCommentator = (user, episode) => {
+ if (!user || !episode || !episode.crew) return false;
+ return !!episode.crew.find(c => c.role === "commentary" && c.user_id === user.id);
+};
+
+export const isTracker = (user, episode) => {
+ if (!user || !episode || !episode.crew) return false;
+ return !!episode.crew.find(c => c.role === "tracking" && c.user_id === user.id);
+};
+
+export const episodeHasChannel = (episode, channel) =>
+ episode && channel && episode.channels && episode.channels.find(c => c.id === channel.id);
+
+export const mayRestreamEpisodes = user =>
+ user && user.channel_crews && user.channel_crews.find(c => c.role === 'admin');
+
+export const mayEditRestream = (user, episode, channel) =>
+ episodeHasChannel(episode, channel) && isChannelAdmin(user, channel);
+
+export const canApplyForEpisode = (user, episode, as) => {
+ if (!user) return false;
+ if (as === 'commentary') return Episode.acceptsComms(episode) && !isCommentator(user, episode);
+ if (as === 'tracking') return Episode.acceptsTrackers(episode) && !isTracker(user, episode);
+ return false;
+};
+
+export const applicableChannels = (user, episode, as) => {
+ if (!user || !episode) return [];
+ const assigned_channels = (episode.crew || [])
+ .filter(c => c.user_id === user.id)
+ .map(c => c.channel_id);
+ const channels = episode.channels || [];
+ if (as === 'commentary') return channels.filter(c =>
+ c.pivot && c.pivot.accept_comms && !assigned_channels.includes(c.id));
+ if (as === 'tracking') return channels.filter(c =>
+ c.pivot && c.pivot.accept_tracker && !assigned_channels.includes(c.id));
+ return [];
+};
+
+export const canRestreamEpisode = (user, episode) => {
+ if (!user || !episode || !mayRestreamEpisodes(user)) return false;
+ const available_channels = user.channel_crews
+ .filter(c => c.role === 'admin')
+ .map(c => c.channel_id);
+ const claimed_channels = ((episode && episode.channels) || []).map(c => c.id);
+ const remaining_channels = available_channels.filter(id => !claimed_channels.includes(id));
+ return remaining_channels.length > 0;
+};
+