Building API with Gin framework

Building API with Gin Framework

Gin is one of the Golang framework. Procedure for create the framework.
on command line:
$ mkdir [directory name]* this the name of my backend repo.
$ cd to the directory
go mod init [directory]
add the following code into file main.go
...
package main // use pacage called main

import (
"net/http"
"github.com/gin-gonic/gin"
)

// Sample of items represents in the database model
// Item starts with uppercase so it is visible to other functions.
type Item struct {
ID string json:"id"
Name string json:"name" binding:"required"
Price double json:"price" binding:"required"
}

// In-memory data store
var items = []Item{
{ID: "1", Name: "Mechanical Keyboard", Price: 99.99},
{ID: "2", Name: "Wireless Mouse", Price: 49.99},
}

// Initialize the default Gin router with Logger and Recovery middleware
func main() {

router := gin.Default()

// Define routes retrieve(GET) and upload(POST)
router.GET("/items", getItems)
router.POST("/items", createItem)

// Start the server on port 8080
router.Run(":8080")

}

// GET handler to fetch all items
func getItems(c *gin.Context) {
c.JSON(http.StatusOK, items)
}

// POST handler to add a new item with validation
func createItem(c *gin.Context) {
var newItem Item

// Bind JSON request body to newItem struct and validate
if err := c.ShouldBindJSON(&newItem); err != nil {
    c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
    return
}

items = append(items, newItem)
c.JSON(http.StatusCreated, newItem)

}
NB: This is just the part of the Framework it not all the files.