feat: use postgres to fetch and store user info

sql/queries.sql.go

@@ -29,6 +29,25 @@ func (q *Queries) CreateImage(ctx context.Context, arg CreateImageParams) (Image
 	return i, err
 }
 
+const createNewUser = `-- name: CreateNewUser :one
+INSERT 
+INTO users (passhash, nickname) 
+VALUES ($1, $2)
+RETURNING id
+`
+
+type CreateNewUserParams struct {
+	Passhash string `json:"passhash"`
+	Nickname string `json:"nickname"`
+}
+
+func (q *Queries) CreateNewUser(ctx context.Context, arg CreateNewUserParams) (int64, error) {
+	row := q.db.QueryRow(ctx, createNewUser, arg.Passhash, arg.Nickname)
+	var id int64
+	err := row.Scan(&id)
+	return id, err
+}
+
 const getImageByID = `-- name: GetImageByID :one
 SELECT id, storage_type, image_path
 FROM images
@@ -268,6 +287,29 @@ func (q *Queries) GetUserByID(ctx context.Context, id int64) (GetUserByIDRow, er
 	return i, err
 }
 
+const getUserByNickname = `-- name: GetUserByNickname :one
+SELECT id, avatar_id, passhash, mail, nickname, disp_name, user_desc, creation_date, last_login
+FROM users
+WHERE nickname = $1
+`
+
+func (q *Queries) GetUserByNickname(ctx context.Context, nickname string) (User, error) {
+	row := q.db.QueryRow(ctx, getUserByNickname, nickname)
+	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 insertStudio = `-- name: InsertStudio :one
 INSERT INTO studios (studio_name, illust_id, studio_desc)
 VALUES (