refactor: extract comment handlers to a seperate file

handlers/comment.go

@@ -0,0 +1,63 @@
+// HANDLERS FOR COMMENTING ON POSTS
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	DB "log101-blog-services/db"
+	"log101-blog-services/models"
+)
+
+func GetComments(c *gin.Context) {
+	db := DB.GetDB()
+	postId := c.Query("postId")
+	comments := []models.Comment{}
+
+	// Post id is required
+	if postId == "" {
+		c.AbortWithStatus(http.StatusBadRequest)
+		return
+	}
+
+	// Retrieve comments related to post
+	rows := db.Where("post_id = ?", postId).Find(&comments)
+	if rows.Error != nil {
+		c.AbortWithStatus(http.StatusInternalServerError)
+		return
+	}
+
+	if rows.RowsAffected == 0 {
+		c.AbortWithStatus(http.StatusNoContent)
+		return
+	} else {
+		c.HTML(http.StatusOK, "comments.tmpl", gin.H{"Comments": comments})
+	}
+
+}
+
+func PostComment(c *gin.Context) {
+	db := DB.GetDB()
+	postId := c.PostForm("postId")
+	commentBody := c.PostForm("commentBody")
+	username := c.PostForm("username")
+
+	if postId == "" || commentBody == "" {
+		c.AbortWithStatus(http.StatusBadRequest)
+		return
+	}
+
+	// username is anonymous if not present
+	if username == "" {
+		username = "anonim"
+	}
+
+	result := db.Create(&models.Comment{Body: commentBody, PostId: postId, Username: username})
+	if result.Error != nil {
+		c.AbortWithStatus(http.StatusInternalServerError)
+		return
+	}
+
+	c.HTML(http.StatusOK, "comment.tmpl", gin.H{"Username": username, "Body": commentBody})
+}

handlers/emoji_form.go

@@ -1,3 +1,5 @@
+// HANDLERS FOR EMOJI FORMS AND EMOJI REACTIONS
+// BELOW POSTS
 package handlers
 
 import (
@@ -15,7 +17,7 @@ func GetEmojiForm(c *gin.Context) {
 	postId := c.Query("postId")
 
 	// get emoji counts for each emoji
-	emojiCounter, err := CountEmojis(postId)
+	emojiCounter, err := GetEmojis(postId)
 	if err != nil {
 		c.HTML(http.StatusOK, "emoji_form.tmpl", gin.H{"error": "error getting the emoji counts"})
 		return
@@ -46,7 +48,7 @@ func PostEmojiForm(c *gin.Context) {
 	}
 
 	// get emoji counts for each emoji
-	emojiCounter, err := CountEmojis(reactedPostId)
+	emojiCounter, err := GetEmojis(reactedPostId)
 	if err != nil {
 		c.HTML(http.StatusOK, "emoji_form_error.tmpl", gin.H{"errorMessage": "error getting the emoji counts"})
 	}
@@ -56,7 +58,7 @@ func PostEmojiForm(c *gin.Context) {
 }
 
 // Get the emoji counts foe a given post id
-func CountEmojis(postId string) (map[string]int, error) {
+func GetEmojis(postId string) (map[string]int, error) {
 	postReactions := []models.PostReaction{}
 	db := DB.GetDB()
 

handlers/emoji_form_test.go

@@ -83,11 +83,11 @@ func TestPostEmojiFormMissingParams(t *testing.T) {
 	w := httptest.NewRecorder()
 	router.ServeHTTP(w, req)
 
-	assert.Equal(t, http.StatusOK, w.Code)
+	assert.Equal(t, http.StatusBadRequest, w.Code)
 	assert.Contains(t, w.Body.String(), "missing parameters")
 }
 
-func TestCountEmojis(t *testing.T) {
+func TestGetEmojis(t *testing.T) {
 	db := SetupTestDB()
 	DB.SetDB(db) // Set the mock DB
 
@@ -95,7 +95,7 @@ func TestCountEmojis(t *testing.T) {
 	db.Create(&models.EmojiReaction{UserAnonIp: "127.0.0.2", Emoji: "😊", PostId: "1"})
 	db.Create(&models.EmojiReaction{UserAnonIp: "127.0.0.1", Emoji: "😂", PostId: "1"})
 
-	counts, err := CountEmojis("1")
+	counts, err := GetEmojis("1")
 	assert.NoError(t, err)
 	assert.Equal(t, 1, counts["😊"])
 	assert.Equal(t, 1, counts["😂"])

main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"log"
-	"net/http"
 
 	"github.com/gin-contrib/cors"
 	"github.com/gin-gonic/gin"
@@ -12,7 +11,6 @@ import (
 	DB "log101-blog-services/db"
 	"log101-blog-services/handlers"
 	"log101-blog-services/middleware"
-	"log101-blog-services/models"
 )
 
 func main() {
@@ -54,44 +52,11 @@ func main() {
 		// updates if user reacted before
 		blog.POST("/forms/emoji", handlers.PostEmojiForm)
 
-		blog.GET("/comments", func(c *gin.Context) {
-			db := DB.GetDB()
-			postId := c.Query("postId")
-			comments := []models.Comment{}
+		// Get the comments for a given post id
+		blog.GET("/comments", handlers.GetComments)
 
-			if postId == "" {
-				c.AbortWithStatus(http.StatusBadRequest)
-				return
-			}
-
-			rows := db.Where("post_id = ?", postId).Find(&comments)
-			if rows.Error != nil {
-				c.AbortWithStatus(http.StatusInternalServerError)
-				return
-			}
-
-			c.HTML(http.StatusOK, "comments.tmpl", gin.H{"Comments": comments})
-		})
-
-		blog.POST("/comments", func(c *gin.Context) {
-			db := DB.GetDB()
-			postId := c.PostForm("postId")
-			commentBody := c.PostForm("commentBody")
-			username := c.PostForm("username")
-
-			if postId == "" || commentBody == "" {
-				c.AbortWithStatus(http.StatusBadRequest)
-				return
-			}
-
-			result := db.Create(&models.Comment{Body: commentBody, PostId: postId, Username: username})
-			if result.Error != nil {
-				c.AbortWithStatus(http.StatusInternalServerError)
-				return
-			}
-
-			c.HTML(http.StatusOK, "comment.tmpl", gin.H{"Username": username, "Body": commentBody})
-		})
+		// Drop comment on a post, postId and comment body is required
+		blog.POST("/comments", handlers.PostComment)
 
 	}