rg caching, improved display

src/sh/cache.sh

@@ -2,6 +2,7 @@ CACHEDIR="$HOME/.cache/$APP_NAME"
 [ -d "$CACHEDIR" ] || mkdir "$CACHEDIR"
 
 artist_mb_filename="musicbrainz.json"
+artist_mb_releasegroups_filename="releasegroups.json"
 artist_discogs_filename="discogs.json"
 artist_wikidata_filename="wikidata.json"
 artist_enwikipedia_filename="enwikipedia.json"
@@ -40,6 +41,12 @@ cache_get_artist_mb() {
   __get_artist_json "$1" "$artist_mb_filename"
 }
 
+# Returns the cached MusicBrainz release-group data for the artist given by the
+# MusicBrainz Artist ID in $1
+cache_get_artist_mb_releasegroups() {
+  __get_artist_json "$1" "$artist_mb_releasegroups_filename"
+}
+
 # Returns the cached Discogs data for the artist given by the MusicBrainz
 # Artist ID in $1
 cache_get_artist_discogs() {
@@ -62,6 +69,23 @@ cache_put_artist_mb() {
   cat | __put_artist_json "$1" "$artist_mb_filename"
 }
 
+# Read from stdin the MusicBrainz release-group data for the artist given by
+# the MusicBrainz Artist ID in $1, and cache it.
+cache_put_artist_mb_releasegroups() {
+  cat | __put_artist_json "$1" "$artist_mb_releasegroups_filename"
+}
+
+# Read from stdin the MusicBrainz release-group data for the artist given by
+# the MusicBrainz Artist ID in $1, and append it to the current cache.
+cache_append_artist_mb_releasegroups() {
+  tmpf=$(mktemp)
+  cat >"$tmpf"
+  updated=$(mktemp)
+  f="$CACHEDIR/$1/$artist_mb_releasegroups_filename"
+  $JQ -r --slurpfile n "$tmpf" '."release-groups" += ($n[0]|."release-groups")' "$f" >"$updated" && mv "$updated" "$f"
+  rm -f "$tmpf"
+}
+
 # Read from stdin the Discogs data for the artist given by the MusicBrainz
 # Artist ID in $1, and cache it.
 cache_put_artist_discogs() {