* feat(subsonic): add averageRating to API responses
Add averageRating attribute to Subsonic API responses for artists,
albums, and songs. The average is calculated across all user ratings.
* perf(db): add index for average rating queries
Add composite index on (item_id, item_type, rating) to optimize
the correlated subquery used for calculating average ratings.
Signed-off-by: Terry Raimondo <terry.raimondo@gmail.com>
* test: add tests for averageRating feature
Add tests for:
- Album.AverageRating calculation in persistence layer
- MediaFile.AverageRating calculation in persistence layer
- AverageRating mapping in subsonic response helpers
Signed-off-by: Terry Raimondo <terry.raimondo@gmail.com>
* test: improve averageRating rounding test with 3 users
Add third test user to fixtures and update rounding test to use
3 ratings (5 + 4 + 4) / 3 = 4.33 for proper decimal rounding coverage.
Signed-off-by: Terry Raimondo <terry.raimondo@gmail.com>
* perf: store avg_rating on entity tables instead of using subquery
- Add avg_rating column to album, media_file, and artist tables
- Update SetRating() to recalculate and store average when ratings change
- Read avg_rating directly from entity table in withAnnotation()
- Remove old annotation index migration (no longer needed)
This trades write-time computation for read-time performance by
pre-computing the average rating instead of using a correlated
subquery on every read.
* feat: add Subsonic.EnableAverageRating config option (default true)
Allow administrators to disable exposing averageRating in Subsonic API
responses if they don't want to expose other users' rating data.
The avg_rating column is still updated internally when users rate items,
but the value is only included in API responses when this option is enabled.
* address PR comments
- Use structs:"avg_rating" with db:"avg_rating" tag instead of SQL alias
- Remove avg_rating indexes (not needed)
- Populate avg_rating columns from existing ratings in migration
* Woops
* rename avg_rating column to average_rating
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Signed-off-by: Terry Raimondo <terry.raimondo@gmail.com>
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