add(backend): inset data to db and check if path exist in db

db.go

@@ -18,7 +18,7 @@ func connectDB() *redis.Client {
 	return db
 }
 
-func insert_paste(key string, content string, secret string, ttl time.Duration) {
+func insertPaste(key string, content string, secret string, ttl time.Duration) {
 	type dbSchema struct {
 		content string
 		secret  string

main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"fmt"
+	"io"
 	"net/http"
 	"strings"
 )
@@ -9,14 +11,31 @@ var currentConfig config
 
 func handleRequest(w http.ResponseWriter, r *http.Request) {
 	path := r.URL.Path
-	if path == "/" {
-		http.ServeFile(w, r, "./static/index.html")
+	switch r.Method {
+	case "GET":
+		if path == "/" {
+			http.ServeFile(w, r, "./static/index.html")
 
-	} else if strings.HasPrefix(path, "/static/") {
-		fs := http.FileServer(http.Dir("./static"))
-		http.Handle("/static/", http.StripPrefix("/static/", fs))
-	} else {
-		w.WriteHeader(http.StatusNotFound)
+		} else if strings.HasPrefix(path, "/static/") {
+			fs := http.FileServer(http.Dir("./static"))
+			http.Handle("/static/", http.StripPrefix("/static/", fs))
+		} else {
+			if urlExist(path) {
+				io.WriteString(w, "exist")
+			} else {
+				w.WriteHeader(http.StatusNotFound)
+			}
+		}
+	case "POST":
+		if path == "/" {
+			secret := generateSecret()
+			url := "/" + generateUrl()
+			content := r.FormValue("content")
+			insertPaste(url, content, secret, -1)
+			http.Redirect(w, r, url, http.StatusSeeOther)
+		} else {
+			w.WriteHeader(http.StatusMethodNotAllowed)
+		}
 	}
 
 }
@@ -28,6 +47,6 @@ func main() {
 
 	err := http.ListenAndServe(listen, nil)
 	if err != nil {
-		return
+		fmt.Println(err)
 	}
 }

utils.go

@@ -1,6 +1,8 @@
 package main
 
-import "math/rand"
+import (
+	"math/rand"
+)
 
 func generateUrl() string {
 	length := currentConfig.urlLength
@@ -12,3 +14,22 @@ func generateUrl() string {
 
 	return string(b)
 }
+
+func generateSecret() string {
+	length := 32
+	listChars := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+	b := make([]rune, length)
+	for i := range b {
+		b[i] = listChars[rand.Intn(len(listChars))]
+	}
+
+	return string(b)
+}
+
+func urlExist(url string) bool {
+	exist := connectDB().Exists(ctx, url).Val()
+	if exist == 1 {
+		return true
+	}
+	return false
+}