fix: GetImpersonationToken external_id handling

sql/migrations/000001_init.up.sql

@@ -112,7 +112,7 @@ CREATE TABLE external_services (
 
 CREATE TABLE external_ids (
     user_id             bigint              NOT NULL REFERENCES users (id),
-    service_id          bigint              REFERENCES external_services (id),
+    service_id          bigint              NOT NULL REFERENCES external_services (id),
     external_id         text                NOT NULL
 );
 

sql/models.go

@@ -188,7 +188,7 @@ func (ns NullUsertitleStatusT) Value() (driver.Value, error) {
 
 type ExternalID struct {
 	UserID     int64  `json:"user_id"`
-	ServiceID  *int64 `json:"service_id"`
+	ServiceID  int64  `json:"service_id"`
 	ExternalID string `json:"external_id"`
 }
 

sql/queries.sql.go

@@ -251,6 +251,35 @@ func (q *Queries) GetTitleTags(ctx context.Context, titleID int64) ([]json.RawMe
 	return items, nil
 }
 
+const getUserByExternalServiceId = `-- name: GetUserByExternalServiceId :one
+SELECT u.id, u.avatar_id, u.passhash, u.mail, u.nickname, u.disp_name, u.user_desc, u.creation_date, u.last_login
+FROM users u
+LEFT JOIN external_ids ei ON eu.user_id = u.id
+WHERE ei.external_id = $1 AND ei.service_id = $2
+`
+
+type GetUserByExternalServiceIdParams struct {
+	ExternalID string `json:"external_id"`
+	ServiceID  int64  `json:"service_id"`
+}
+
+func (q *Queries) GetUserByExternalServiceId(ctx context.Context, arg GetUserByExternalServiceIdParams) (User, error) {
+	row := q.db.QueryRow(ctx, getUserByExternalServiceId, arg.ExternalID, arg.ServiceID)
+	var i User
+	err := row.Scan(
+		&i.ID,
+		&i.AvatarID,
+		&i.Passhash,
+		&i.Mail,
+		&i.Nickname,
+		&i.DispName,
+		&i.UserDesc,
+		&i.CreationDate,
+		&i.LastLogin,
+	)
+	return i, err
+}
+
 const getUserByID = `-- name: GetUserByID :one
 SELECT 
     t.id                as id,