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database: Add methods to query mediums

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This commit is contained in:
Elias Projahn 2021-02-06 23:02:38 +01:00
parent 93c55d8892
commit 2ded5a659a
2 changed files with 67 additions and 1 deletions
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46
crates/musicus_database/src/medium.rs
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@ -1,5 +1,5 @@
use super::generate_id;
use super::schema::{mediums, recordings, track_sets, tracks};
use super::schema::{ensembles, mediums, performances, persons, recordings, track_sets, tracks};
use super::{Database, Error, Recording, Result};
use diesel::prelude::*;
use serde::{Deserialize, Serialize};
@ -167,6 +167,50 @@ impl Database {
Ok(medium)
}
/// Get mediums on which this person is performing.
pub fn get_mediums_for_person(&self, person_id: &str) -> Result<Vec<Medium>> {
let mut mediums: Vec<Medium> = Vec::new();
let rows = mediums::table
.inner_join(track_sets::table.on(track_sets::medium.eq(mediums::id)))
.inner_join(recordings::table.on(recordings::id.eq(track_sets::recording)))
.inner_join(performances::table.on(performances::recording.eq(recordings::id)))
.inner_join(persons::table.on(persons::id.nullable().eq(performances::person)))
.filter(persons::id.eq(person_id))
.select(mediums::table::all_columns())
.distinct()
.load::<MediumRow>(&self.connection)?;
for row in rows {
let medium = self.get_medium_data(row)?;
mediums.push(medium);
}
Ok(mediums)
}
/// Get mediums on which this ensemble is performing.
pub fn get_mediums_for_ensemble(&self, ensemble_id: &str) -> Result<Vec<Medium>> {
let mut mediums: Vec<Medium> = Vec::new();
let rows = mediums::table
.inner_join(track_sets::table.on(track_sets::medium.eq(mediums::id)))
.inner_join(recordings::table.on(recordings::id.eq(track_sets::recording)))
.inner_join(performances::table.on(performances::recording.eq(recordings::id)))
.inner_join(ensembles::table.on(ensembles::id.nullable().eq(performances::ensemble)))
.filter(ensembles::id.eq(ensemble_id))
.select(mediums::table::all_columns())
.distinct()
.load::<MediumRow>(&self.connection)?;
for row in rows {
let medium = self.get_medium_data(row)?;
mediums.push(medium);
}
Ok(mediums)
}
/// Delete a medium and all of its tracks. This will fail, if the music
/// library contains audio files referencing any of those tracks.
pub fn delete_medium(&self, id: &str) -> Result<()> {