Create metadata (#133)

* Added migration for metadata table used to store a song's metadata

* Added comment for new table

* Added endpoint to create metadata

* Filling out code

* Changed type of duration in request

* Reorganizing code

* Changing metadata table to song

* Added TODO for data type discrepancy for the future

* Fix migration syntax error

* Added types to request

* Added environment variable for root directory:

* Moving keys to its own module

* Moved environement related code to its own module

* Added function to get root_directory

* Added endpoint to create song

* Minor fixes

* Added test and refactored tests

* Ironing out some kinks

* Resolved test issue

Turns out I was using the wrong id value

* Added env variable in workflow

* Added TODO

* Updated env variable

* clippy warning fixes

* Making sure date_created is populated when returneD

* Code cleanup

* Added TODOs

* Uncommenting tests

* Code formatting

migrations/20250420185217_init_migration.sql

@@ -26,3 +26,26 @@ CREATE TABLE IF NOT EXISTS "coverartQueue" (
 
 -- Create an index for better query performance
 CREATE INDEX metadata_queue_data_metadata ON "metadataQueue" USING gin (metadata);
+
+-- Table to store a song's info
+CREATE TABLE IF NOT EXISTS "song" (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    title TEXT NOT NULL,
+    artist TEXT NOT NULL,
+    album_artist TEXT NOT NULL,
+    album TEXT NOT NULL,
+    genre TEXT NOT NULL,
+    -- TODO: Address discrepancy of date and year at some point
+    -- date TEXT NOT NULL,
+    year INT NOT NULL,
+    track SMALLINT NOT NULL,
+    disc SMALLINT NOT NULL,
+    track_count SMALLINT NOT NULL,
+    disc_count SMALLINT NOT NULL,
+    duration INT NOT NULL,
+    audio_type TEXT NOT NULL,
+    date_created timestamptz DEFAULT now(),
+    filename TEXT NOT NULL,
+    directory TEXT NOT NULL,
+    user_id UUID NULL
+);