Resolve "Add a generate playlist from "almost top played artists""

Closes #26 (closed)

public/index.php

@@ -55,7 +55,8 @@ $templateData = [
 ];
 
 $generatePlaylistFromPlaylist = isset($_GET['generate-playlist-from-playlist']);
-$generatePlaylistFromArtists = isset($_GET['generate-playlist-top-artists']);
+$generatePlaylistFromSelectedTopArtists = isset($_GET['generate-playlist-top-artists']);
+$generatePlaylistFromRandomTopArtists = isset($_GET['generate-playlist-random-top-artists']);
 
 if ($generatePlaylistFromPlaylist) {
     $selectedPlaylists = $_GET['selected-playlist'];
@@ -109,7 +110,9 @@ if ($generatePlaylistFromPlaylist) {
     $newPlaylist = createPlaylistWithRandomTracks($api, $recommendedTrackIds);
     $templateData['infos'][] = getCreatedPlaylistInformationMessage($api, $newPlaylist);
     $templateData['playlist'] = createDisplayablePlaylist($newPlaylist);
-} elseif ($generatePlaylistFromArtists) {
+
+} elseif ($generatePlaylistFromSelectedTopArtists) {
+
     $selectedArtists = $_GET['selected-artist'];
     error_log('Will create new playlist with filterted recommendations from artists: '.join(', ', $selectedArtists).'".');
     $recommendedTrackIds = [];
@@ -140,6 +143,45 @@ if ($generatePlaylistFromPlaylist) {
         }
     }
 
+    $newPlaylist = createPlaylistWithRandomTracks($api, $recommendedTrackIds);
+    $templateData['infos'][] = getCreatedPlaylistInformationMessage($api, $newPlaylist);
+    $templateData['playlist'] = createDisplayablePlaylist($newPlaylist);
+
+} elseif ($generatePlaylistFromRandomTopArtists) {
+
+    $countInTopArtists = random_int(4, 6);
+    $countInLessTopArtists = random_int(4, 6);
+    $limitBetweenTopAndLessTop = $topArtistsCount;
+    $selectedArtists = getRandomArtistsFromTopArtists($api, $countInTopArtists, $countInLessTopArtists, $limitBetweenTopAndLessTop);
+    error_log('Will create new playlist with filterted recommendations from random artists: '.join(', ', $selectedArtists).'".');
+    $recommendedTrackIds = [];
+
+    $shouldFilterByArtists = isset($_GET['check-top-artist-filter-artists']);
+    error_log('Filter by artists in selection: '.($shouldFilterByArtists ? 'yes' : 'no'));
+
+    foreach ($selectedArtists as $selectedArtist) {
+        error_log('Get recommendations for artist '.$selectedArtist.'');
+        $recommendations = $api->getRecommendations([
+            'seed_artists' => $selectedArtist,
+            'limit' => 100
+        ]);
+        error_log(' -> Got '.count($recommendations->tracks).' recommendatations.');
+
+        // Filter by artist if requested, remove duplicates
+        foreach ($recommendations->tracks as $recommendedTrack) {
+            if ($shouldFilterByArtists) {
+                $trackArtistInWantedArtists = false;
+                foreach ($recommendedTrack->artists as $trackArtist) {
+                    if (\in_array($trackArtist->id, $selectedArtists)) {
+                        $recommendedTrackIds[$recommendedTrack->id] = 1;
+                    }
+                }
+            } else {
+                $recommendedTrackIds[$recommendedTrack->id] = 1;
+            }
+        }
+    }
+
     $newPlaylist = createPlaylistWithRandomTracks($api, $recommendedTrackIds);
     $templateData['infos'][] = getCreatedPlaylistInformationMessage($api, $newPlaylist);
     $templateData['playlist'] = createDisplayablePlaylist($newPlaylist);