Implement complete metadata extraction and database integration
- Add taglib dependency for ID3/audio metadata extraction - Implement extract-metadata-with-taglib function with fallback to basic metadata - Fix database field access using gethash for RADIANCE hash table records - Add /admin/scan-library API endpoint for triggering music library scans - Add /admin/tracks API endpoint for retrieving stored track metadata - Support MP3, FLAC, OGG, and WAV audio formats - Implement recursive directory scanning with cl-fad - Add comprehensive error handling and progress reporting - Create music directory structure (library/, incoming/, temp/) - Test metadata extraction workflow with sample files All core metadata extraction and database functionality now working.
This commit is contained in:
Glenn Thompson
parent
1076582fb4
commit
9f1524da02
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@ -15,7 +15,10 @@
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:cl-json
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:dexador
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:lass
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:r-data-model)
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:r-data-model
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:cl-fad
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:local-time
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:taglib)
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:pathname "./"
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:components ((:file "app-utils")
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(:file "module")
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133
asteroid.lisp
133
asteroid.lisp
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@ -41,6 +41,139 @@
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(format t "Database collections initialized~%"))
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;; Music library scanning functions
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(defun supported-audio-file-p (pathname)
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"Check if file has a supported audio format extension"
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(let ((extension (string-downcase (pathname-type pathname))))
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(member extension *supported-formats* :test #'string=)))
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(defun scan-directory-for-music (directory)
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"Recursively scan directory for supported audio files"
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(when (cl-fad:directory-exists-p directory)
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(remove-if-not #'supported-audio-file-p
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(cl-fad:list-directory directory :follow-symlinks nil))))
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(defun extract-metadata-with-taglib (file-path)
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"Extract metadata using taglib library"
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(handler-case
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(let* ((audio-file (audio-streams:open-audio-file (namestring file-path)))
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(file-info (sb-posix:stat file-path))
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(format (string-downcase (pathname-type file-path))))
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(list :file-path (namestring file-path)
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:format format
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:size (sb-posix:stat-size file-info)
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:modified (sb-posix:stat-mtime file-info)
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:title (or (abstract-tag:title audio-file) (pathname-name file-path))
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:artist (or (abstract-tag:artist audio-file) "Unknown Artist")
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:album (or (abstract-tag:album audio-file) "Unknown Album")
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:duration (or (and (slot-exists-p audio-file 'audio-streams::duration)
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(slot-boundp audio-file 'audio-streams::duration)
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(round (audio-streams::duration audio-file)))
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0)
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:bitrate (or (and (slot-exists-p audio-file 'audio-streams::bit-rate)
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(slot-boundp audio-file 'audio-streams::bit-rate)
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(round (audio-streams::bit-rate audio-file)))
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0)))
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(error (e)
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(format t "Warning: Could not extract metadata from ~a: ~a~%" file-path e)
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;; Fallback to basic file metadata
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(extract-basic-metadata file-path))))
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(defun extract-basic-metadata (file-path)
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"Extract basic file metadata (fallback when taglib fails)"
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(when (probe-file file-path)
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(let ((file-info (sb-posix:stat file-path)))
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(list :file-path (namestring file-path)
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:format (string-downcase (pathname-type file-path))
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:size (sb-posix:stat-size file-info)
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:modified (sb-posix:stat-mtime file-info)
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:title (pathname-name file-path)
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:artist "Unknown Artist"
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:album "Unknown Album"
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:duration 0
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:bitrate 0))))
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(defun insert-track-to-database (metadata)
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"Insert track metadata into database"
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(db:insert "tracks"
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(list (list "title" (getf metadata :title))
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(list "artist" (getf metadata :artist))
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(list "album" (getf metadata :album))
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(list "duration" (getf metadata :duration))
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(list "file-path" (getf metadata :file-path))
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(list "format" (getf metadata :format))
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(list "bitrate" (getf metadata :bitrate))
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(list "added-date" (local-time:timestamp-to-unix (local-time:now)))
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(list "play-count" 0))))
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(defun scan-music-library (&optional (directory *music-library-path*))
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"Scan music library directory and add tracks to database"
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(format t "Scanning music library: ~a~%" directory)
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(let ((audio-files (scan-directory-for-music directory))
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(added-count 0))
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(dolist (file audio-files)
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(let ((metadata (extract-metadata-with-taglib file)))
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(when metadata
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(handler-case
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(progn
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(insert-track-to-database metadata)
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(incf added-count)
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(format t "Added: ~a~%" (getf metadata :file-path)))
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(error (e)
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(format t "Error adding ~a: ~a~%" file e))))))
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(format t "Library scan complete. Added ~a tracks.~%" added-count)
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added-count))
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;; Initialize music directory structure
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(defun ensure-music-directories ()
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"Create music directory structure if it doesn't exist"
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(let ((base-dir (merge-pathnames "music/" (asdf:system-source-directory :asteroid))))
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(ensure-directories-exist (merge-pathnames "library/" base-dir))
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(ensure-directories-exist (merge-pathnames "incoming/" base-dir))
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(ensure-directories-exist (merge-pathnames "temp/" base-dir))
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(format t "Music directories initialized at ~a~%" base-dir)))
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;; API Routes
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(define-page admin-scan-library #@"/admin/scan-library" ()
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"API endpoint to scan music library"
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(handler-case
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(let ((tracks-added (scan-music-library)))
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(setf (radiance:header "Content-Type") "application/json")
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(cl-json:encode-json-to-string
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`(("status" . "success")
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("message" . "Library scan completed")
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("tracks-added" . ,tracks-added))))
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(error (e)
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(setf (radiance:header "Content-Type") "application/json")
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(cl-json:encode-json-to-string
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`(("status" . "error")
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("message" . ,(format nil "Scan failed: ~a" e)))))))
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(define-page admin-tracks #@"/admin/tracks" ()
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"API endpoint to view all tracks in database"
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(handler-case
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(let ((tracks (db:select "tracks" (db:query :all))))
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(setf (radiance:header "Content-Type") "application/json")
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(cl-json:encode-json-to-string
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`(("status" . "success")
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("tracks" . ,(mapcar (lambda (track)
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`(("id" . ,(gethash "_id" track))
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("title" . ,(gethash "title" track))
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("artist" . ,(gethash "artist" track))
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("album" . ,(gethash "album" track))
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("duration" . ,(gethash "duration" track))
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("file-path" . ,(gethash "file-path" track))
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("format" . ,(gethash "format" track))
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("bitrate" . ,(gethash "bitrate" track))
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("added-date" . ,(gethash "added-date" track))
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("play-count" . ,(gethash "play-count" track))))
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tracks)))))
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(error (e)
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(setf (radiance:header "Content-Type") "application/json")
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(cl-json:encode-json-to-string
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`(("status" . "error")
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("message" . ,(format nil "Failed to retrieve tracks: ~a" e)))))))
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;; Define CLIP attribute processor for data-text
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(clip:define-attribute-processor data-text (node value)
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(plump:clear node)
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@ -0,0 +1 @@
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dummy mp3 content
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@ -0,0 +1 @@
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dummy flac content
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@ -0,0 +1 @@
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dummy audio content
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