feat: add getAuthorByID

internal/author/controller.go

@@ -1,7 +1,7 @@
 package user
 
 import (
-	"context"
+	"strconv"
 
 	"github.com/gin-gonic/gin"
 	"tutorial.sqlc.dev/app/internal/author/gen"
@@ -17,10 +17,27 @@ func NewController(conn gen.DBTX) Controller {
 	}
 }
 
-func (u *Controller) ListAuthors(ctx *gin.Context) {
-	authors, err := u.queries.ListAuthors(context.Background())
+func (u *Controller) ListAuthors(c *gin.Context) {
+	authors, err := u.queries.ListAuthors(c.Request.Context())
 	if err != nil {
-		ctx.AbortWithError(500, err)
+		c.AbortWithError(500, err)
+		return
 	}
-	ctx.JSON(200, authors)
+	c.JSON(200, authors)
+}
+
+func (u *Controller) GetAuthorByID(c *gin.Context) {
+	idStr := c.Param("id")
+	id, err := strconv.Atoi(idStr)
+	if err != nil {
+		c.AbortWithError(400, err)
+		return
+	}
+	author, err := u.queries.GetAuthor(c.Request.Context(), int64(id))
+	if err != nil {
+		c.JSON(400, gin.H{"message": "Author not found"})
+		return
+	}
+
+	c.JSON(200, author)
 }