diff --git a/src/internal/external_medias/external_medias.go b/src/internal/external_medias/external_medias.go new file mode 100644 index 0000000..2cbe7ba --- /dev/null +++ b/src/internal/external_medias/external_medias.go @@ -0,0 +1,62 @@ +package extmedias + +import ( + "github.com/jmoiron/sqlx" + "gitlab.quimbo.fr/odwrtw/canape-sql/src/internal/sqly" +) + +const ( + addExternalMediaQuery = `INSERT INTO external_medias (type, source, category, ids) VALUES ($1, $2, $3, $4) RETURNING id;` + updateExternalMediaQuery = `UPDATE external_medias SET type=:type, source=:source, category=:category, ids=:ids WHERE id=:id RETURNING *;` + + deleteExternalMediaQuery = `DELETE FROM external_medias WHERE id=:id;` + getExternalMediaQuery = `SELECT * FROM external_medias WHERE type=$1 AND source=$2 AND category=$3 LIMIT 1;` +) + +// Media represents an external media +type Media struct { + sqly.BaseModel + Type string `db:"type"` + Source string `db:"source"` + Category string `db:"category"` + IDs sqly.StringSlice `db:"ids"` +} + +// Add adds the Media in the database +func (m *Media) Add(q sqlx.Queryer) error { + var id string + err := q.QueryRowx(addExternalMediaQuery, m.Type, m.Source, m.Category, m.IDs).Scan(&id) + if err != nil { + return err + } + m.ID = id + return nil +} + +// Update ids only updates the IDs of the media +func (m *Media) Update(ex *sqlx.DB) error { + rows, err := ex.NamedQuery(updateExternalMediaQuery, m) + if err != nil { + return err + } + for rows.Next() { + rows.StructScan(m) + } + return nil +} + +// Delete the media from database or raise an error +func (m *Media) Delete(ex *sqlx.DB) error { + _, err := ex.NamedExec(deleteExternalMediaQuery, m) + return err +} + +// Get gets a media +func Get(q sqlx.Queryer, mtype, msrc, mcat string) (*Media, error) { + m := &Media{} + if err := q.QueryRowx(getExternalMediaQuery, mtype, msrc, mcat).StructScan(m); err != nil { + return nil, err + } + + return m, nil +} diff --git a/src/internal/external_medias/external_medias_test.go b/src/internal/external_medias/external_medias_test.go new file mode 100644 index 0000000..2651ba3 --- /dev/null +++ b/src/internal/external_medias/external_medias_test.go @@ -0,0 +1,75 @@ +package extmedias + +import ( + "database/sql" + "fmt" + "os" + "testing" + + _ "github.com/mattes/migrate/driver/postgres" + "gitlab.quimbo.fr/odwrtw/canape-sql/src/internal/sqly" + + "github.com/jmoiron/sqlx" +) + +var db *sqlx.DB +var pgdsn string + +func init() { + var err error + + pgdsn = os.Getenv("POSTGRES_DSN") + db, err = sqlx.Connect("postgres", pgdsn) + + if err != nil { + fmt.Printf("Unavailable PG tests:\n %v\n", err) + os.Exit(1) + } +} + +func TestAddExternalMedias(t *testing.T) { + sqly.RunWithLastestMigration(db, pgdsn, t, func(db *sqlx.DB, t *testing.T) { + media := &Media{ + Type: "movie", + Source: "trakttv", + Category: "trending", + IDs: []string{"1", "2", "3"}, + } + + // Add it + if err := media.Add(db); err != nil { + t.Fatalf("failed to add external media: %q", err) + } + + // Update the IDs + media.IDs = []string{"1", "2", "3", "4"} + if err := media.Update(db); err != nil { + t.Fatalf("failed to update the external media: %q", err) + } + + // Find it + m, err := Get(db, media.Type, media.Source, media.Category) + if err != nil { + t.Fatalf("failed get the external media: %q", err) + } + + // Small, almost useless check + if len(m.IDs) != 4 { + t.Fatalf("the media should have 4 ids, only %d found", len(m.IDs)) + } + + // Delete it + if err := media.Delete(db); err != nil { + t.Fatalf("failed to delete the external media: %q", err) + } + + // Search it and expect that it's not found + m, err = Get(db, media.Type, media.Source, media.Category) + if err == nil { + t.Fatal("there should be an error, was the external media deleted ?") + } + if err != sql.ErrNoRows { + t.Fatalf("unexpected error: %q", err) + } + }) +} diff --git a/src/internal/sqly/string_slice.go b/src/internal/sqly/string_slice.go new file mode 100644 index 0000000..14bada0 --- /dev/null +++ b/src/internal/sqly/string_slice.go @@ -0,0 +1,58 @@ +package sqly + +import ( + "database/sql/driver" + "encoding/csv" + "errors" + "regexp" + "strings" +) + +// This mainly comes from https://gist.github.com/adharris/4163702 + +// StringSlice represents an array of string. The custom type is needed because +// pq does not support slices yet.. +type StringSlice []string + +// for replacing escaped quotes except if it is preceded by a literal backslash +// eg "\\" should translate to a quoted element whose value is \ + +var quoteEscapeRegex = regexp.MustCompile(`([^\\]([\\]{2})*)\\"`) + +// Scan convert to a slice of strings +// http://www.postgresql.org/docs/9.1/static/arrays.html#ARRAYS-IO +func (s *StringSlice) Scan(src interface{}) error { + asBytes, ok := src.([]byte) + if !ok { + return error(errors.New("Scan source was not []bytes")) + } + str := string(asBytes) + + // change quote escapes for csv parser + str = quoteEscapeRegex.ReplaceAllString(str, `$1""`) + str = strings.Replace(str, `\\`, `\`, -1) + // remove braces + str = str[1 : len(str)-1] + csvReader := csv.NewReader(strings.NewReader(str)) + + slice, err := csvReader.Read() + + if err != nil { + return err + } + + (*s) = StringSlice(slice) + + return nil +} + +// Value implements the Valuer interface +func (s StringSlice) Value() (driver.Value, error) { + // string escapes. + // \ => \\\ + // " => \" + for i, elem := range s { + s[i] = `"` + strings.Replace(strings.Replace(elem, `\`, `\\\`, -1), `"`, `\"`, -1) + `"` + } + return "{" + strings.Join(s, ",") + "}", nil +}