88 lines
3.6 KiB
Common Lisp
88 lines
3.6 KiB
Common Lisp
(in-package :asteroid)
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;; Database connection parameters for direct postmodern queries
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(defun get-db-connection-params ()
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"Get database connection parameters for postmodern"
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(list (or (uiop:getenv "ASTEROID_DB_NAME") "asteroid")
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(or (uiop:getenv "ASTEROID_DB_USER") "asteroid")
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(or (uiop:getenv "ASTEROID_DB_PASSWORD") "asteroid_db_2025")
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(or (uiop:getenv "ASTEROID_DB_HOST") "localhost")
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:port (parse-integer (or (uiop:getenv "ASTEROID_DB_PORT") "5432"))))
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(defmacro with-db (&body body)
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"Execute body with database connection"
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`(postmodern:with-connection (get-db-connection-params)
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,@body))
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;; Database initialization - must be in db:connected trigger because
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;; the system could load before the database is ready.
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(define-trigger db:connected ()
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"Initialize database collections when database connects"
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(unless (db:collection-exists-p "tracks")
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(db:create "tracks" '((title :text)
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(artist :text)
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(album :text)
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(duration :integer)
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(file-path :text)
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(format :text)
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(bitrate :integer)
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(added-date :integer)
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(play-count :integer))))
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(unless (db:collection-exists-p "playlists")
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(db:create "playlists" '((name :text)
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(description :text)
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(created-date :integer)
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(user-id :integer)
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(track-ids :text))))
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(unless (db:collection-exists-p "USERS")
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(db:create "USERS" '((username :text)
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(email :text)
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(password-hash :text)
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(role :text)
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(active :integer)
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(created-date :integer)
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(last-login :integer))))
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(unless (db:collection-exists-p "playlist_tracks")
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(db:create "playlist_tracks" '((track_id :integer)
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(position :integer)
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(added_date :integer))))
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;; TODO: the radiance db interface is too basic to contain anything
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;; but strings, integers, booleans, and maybe timestamps... we will
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;; need to rethink this. currently track/playlist relationships are
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;; defined in the SQL file 'init-db.sql' referenced in the docker
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;; config for postgresql, but our lisp code doesn't leverage it.
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;; (unless (db:collection-exists-p "sessions")
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;; (db:create "sessions" '(())))
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(format t "~2&Database collections initialized~%"))
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(defun data-model-as-alist (model)
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"Converts a radiance data-model instance into a alist"
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(unless (dm:hull-p model)
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(loop for field in (dm:fields model)
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collect (cons field (dm:field model field)))))
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(defun lambdalite-db-p ()
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"Checks if application is using lambdalite as database backend"
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(string= (string-upcase (package-name (db:implementation)))
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"I-LAMBDALITE"))
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(defun data-model-save (data-model)
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"Wrapper on data-model save method to bypass error using dm:save on lambdalite.
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It uses the same approach as dm:save under the hood through db:save."
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(if (lambdalite-db-p)
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(progn
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(format t "Updating lambdalite collection '~a'~%" (dm:collection data-model))
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(db:update (dm:collection data-model)
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(db:query (:= '_id (dm:id data-model)))
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(dm:field-table data-model)))
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(progn
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(format t "Updating database table '~a'~%" (dm:collection data-model))
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(dm:save data-model))))
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