HEAVY: finish music service migration, tidy up services, more tests

repository/music/artist_postgres.go

@@ -0,0 +1,154 @@
+package music
+
+import (
+    "arimelody-web/model"
+)
+
+func (repo *MusicRepositoryPostgres) GetAllArtists() ([]*model.Artist, error) {
+    var artists = []*model.Artist{}
+
+    err := repo.db.Select(&artists, "SELECT * FROM artist")
+    if err != nil {
+        return nil, err
+    }
+
+    return artists, nil
+}
+func (repo *MusicRepositoryPostgres) GetArtistCount() (int, error) {
+    var count int
+    err := repo.db.Get(&count, "SELECT count(*) FROM artist")
+    return count, err
+}
+
+func (repo *MusicRepositoryPostgres) GetArtistByID(id string) (*model.Artist, error) {
+    var artist = model.Artist{}
+
+    err := repo.db.Get(&artist, "SELECT * FROM artist WHERE id=$1", id)
+    if err != nil {
+        return nil, err
+    }
+
+    return &artist, nil
+}
+
+func (repo *MusicRepositoryPostgres) GetArtistsNotOnRelease(releaseID string) ([]*model.Artist, error) {
+    var artists = []*model.Artist{}
+
+    err := repo.db.Select(&artists,
+        "SELECT * FROM artist "+
+        "WHERE id NOT IN "+
+        "(SELECT artist FROM musiccredit WHERE release=$1)",
+        releaseID)
+    if err != nil {
+        return nil, err
+    }
+
+    return artists, nil
+}
+
+func (repo *MusicRepositoryPostgres) GetArtistCredits(artistID string, showHidden bool) ([]*model.Credit, error) {
+    var query string = "SELECT release.id,title,artwork,release_date,artist.id,name,website,avatar,role,is_primary "+
+        "FROM musiccredit "+
+        "JOIN musicrelease AS release ON release=release.id "+
+        "JOIN artist ON artist=artist.id "+
+        "WHERE artist=$1 "
+    if !showHidden { query += "AND visible=true " }
+    query += "ORDER BY release_date DESC"
+    rows, err := repo.db.Query(query, artistID)
+    if err != nil {
+        return nil, err
+    }
+    defer rows.Close()
+    
+    type NamePrimary struct {
+        Name    string  `json:"name"`
+        Primary bool    `json:"primary" db:"is_primary"`
+    }
+    var credits []*model.Credit
+    for rows.Next() {
+        credit := &model.Credit{
+            Release: &model.Release{},
+            Artist: &model.Artist{},
+        }
+        err = rows.Scan(
+            &credit.Release.ID,
+            &credit.Release.Title,
+            &credit.Release.Artwork,
+            &credit.Release.ReleaseDate,
+            &credit.Artist.ID,
+            &credit.Artist.Name,
+            &credit.Artist.Website,
+            &credit.Artist.Avatar,
+            &credit.Role,
+            &credit.Primary,
+        )
+
+        otherArtists := []NamePrimary{}
+        err = repo.db.Select(&otherArtists,
+            "SELECT name,is_primary FROM artist "+
+            "JOIN musiccredit ON artist=id "+
+            "WHERE release=$1",
+            credit.Release.ID)
+        for _, otherCredit := range otherArtists {
+            credit.Release.Credits = append(credit.Release.Credits, &model.Credit{
+                Artist: &model.Artist{
+                    Name: otherCredit.Name,
+                },
+                Primary: otherCredit.Primary,
+            })
+        }
+
+        credits = append(credits, credit)
+    }
+
+    return credits, nil
+}
+
+func (repo *MusicRepositoryPostgres) CreateArtist(
+    id string,
+    name string,
+    website string,
+    avatar string,
+) error {
+    _, err := repo.db.Exec(
+        "INSERT INTO artist (id, name, website, avatar) "+
+        "VALUES ($1, $2, $3, $4)",
+        id, name, website, avatar,
+    )
+    return err
+}
+
+func (repo *MusicRepositoryPostgres) UpdateArtist(artist *model.Artist) error {
+    _, err := repo.db.Exec(
+        "UPDATE artist "+
+        "SET name=$2, website=$3, avatar=$4 "+
+        "WHERE id=$1",
+        artist.ID,
+        artist.Name,
+        artist.Website,
+        artist.Avatar,
+    )
+    return err
+}
+func (repo *MusicRepositoryPostgres) UpdateArtistID(oldID string, newID string) error {
+    _, err := repo.db.Exec("UPDATE artist SET id=$2 WHERE id=$1", oldID, newID)
+    return err
+}
+func (repo *MusicRepositoryPostgres) UpdateArtistName(id string, name string) error {
+    _, err := repo.db.Exec("UPDATE artist SET name=$2 WHERE id=$1", id, name)
+    return err
+}
+func (repo *MusicRepositoryPostgres) UpdateArtistWebsite(id string, website string) error {
+    _, err := repo.db.Exec("UPDATE artist SET website=$2 WHERE id=$1", id, website)
+    return err
+}
+func (repo *MusicRepositoryPostgres) UpdateArtistAvatar(id string, avatar string) error {
+    _, err := repo.db.Exec("UPDATE artist SET avatar=$2 WHERE id=$1", id, avatar)
+    return err
+}
+
+func (repo *MusicRepositoryPostgres) DeleteArtist(id string) (string, error) {
+    var deletedID string
+    err := repo.db.Get(&deletedID, "DELETE FROM artist WHERE id=$1", id)
+    return deletedID, err
+}