Simple webserver.

2024/10/golang_webserver_demo1/main.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"github.com/gin-gonic/gin"
+	"os"
+	"time"
+)
+
+func main() {
+	r := gin.Default()
+	r.GET("/ping", func(c *gin.Context) {
+		c.JSON(200, gin.H{
+			"message":  "pong",
+			"datetime": time.Now(),
+		})
+	})
+
+	r.GET("/info", func(c *gin.Context) {
+		var directories []map[string]string
+		dirs, err := os.ReadDir(".")
+
+		if err != nil {
+			c.JSON(500, gin.H{
+				"message": "it failed",
+			})
+			return
+		}
+
+		for i := 0; i < len(dirs); i++ {
+			m := make(map[string]string)
+			m["name"] = dirs[i].Name()
+			if dirs[i].IsDir() {
+				m["dir"] = "yes"
+			} else {
+				m["dir"] = "no"
+			}
+			directories = append(directories, m)
+		}
+
+		c.JSON(200, gin.H{
+			"dirs": directories,
+		})
+	})
+
+	err := r.Run("localhost:8080")
+	if err != nil {
+		panic("Couldn't run the server. It failed with the error: " + err.Error())
+	}
+}