Golang フレームワーク コミュニティのリソース インベントリ

package main

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

type Customer struct {
    ID    string `json:"id"`
    Name  string `json:"name"`
    Email string `json:"email"`
}

var customers = []Customer{
    {ID: "1", Name: "John Doe", Email: "john@example.com"},
    {ID: "2", Name: "Jane Doe", Email: "jane@example.com"},
}

func main() {
    r := gin.Default()

    r.GET("/customers", getCustomers)
    r.GET("/customers/:id", getCustomerByID)
    r.POST("/customers", createCustomer)
    r.PUT("/customers/:id", updateCustomer)
    r.DELETE("/customers/:id", deleteCustomer)

    r.Run()
}

func getCustomers(c *gin.Context) {
    c.JSON(200, customers)
}

func getCustomerByID(c *gin.Context) {
    id := c.Param("id")
    for _, customer := range customers {
        if customer.ID == id {
            c.JSON(200, customer)
            return
        }
    }
    c.JSON(404, gin.H{"error": "customer not found"})
}

func createCustomer(c *gin.Context) {
    var newCustomer Customer
    if err := c.BindJSON(&newCustomer); err != nil {
        c.JSON(400, gin.H{"error": err.Error()})
        return
    }

    customers = append(customers, newCustomer)
    c.JSON(201, newCustomer)
}

func updateCustomer(c *gin.Context) {
    id := c.Param("id")
    for index, customer := range customers {
        if customer.ID == id {
            if err := c.BindJSON(&customer); err != nil {
                c.JSON(400, gin.H{"error": err.Error()})
                return
            }

            customers[index] = customer
            c.JSON(200, customer)
            return
        }
    }
    c.JSON(404, gin.H{"error": "customer not found"})
}

func deleteCustomer(c *gin.Context) {
    id := c.Param("id")
    for index, customer := range customers {
        if customer.ID == id {
            customers = append(customers[:index], customers[index+1:]...)
            c.JSON(200, gin.H{"message": "customer deleted"})
            return
        }
    }
    c.JSON(404, gin.H{"error": "customer not found"})
}