// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0
// snippet-start:[ec2.go.delete_security_group]
package main

// snippet-start:[ec2.go.delete_security_group.imports]
import (
    "flag"
    "fmt"

    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/ec2"
    "github.com/aws/aws-sdk-go/service/ec2/ec2iface"
)
// snippet-end:[ec2.go.delete_security_group.imports]

// RemoveSecurityGroup deletes a security group.
// Inputs:
//     svc is an Amazon EC2 service client
//     name is the name of the security group
// Output:
//     If success, nil
//     Otherwise, an error from the call to DeleteSecurityGroup
func RemoveSecurityGroup(svc ec2iface.EC2API, name *string) error {
    // snippet-start:[ec2.go.delete_security_group.call]
    _, err := svc.DeleteSecurityGroup(&ec2.DeleteSecurityGroupInput{
        GroupName: name,
    })
    // snippet-end:[ec2.go.delete_security_group.call]
    if err != nil {
        return err
    }

    return nil
}

func main() {
    // snippet-start:[ec2.go.delete_security_group.args]
    name := flag.String("n", "", "The name of the security group to delete")
    flag.Parse()

    if *name == "" {
        fmt.Println("You must supply the name of the security group to delete")
        return
    }
    // snippet-end:[ec2.go.delete_security_group.args]

    // snippet-start:[ec2.go.delete_security_group.session]
    sess := session.Must(session.NewSessionWithOptions(session.Options{
        SharedConfigState: session.SharedConfigEnable,
    }))

    svc := ec2.New(sess)
    // snippet-end:[ec2.go.delete_security_group.session]

    err := RemoveSecurityGroup(svc, name)
    if err != nil {
        fmt.Println("Got an error deleting security group:")
        fmt.Println(err)
        return
    }

    fmt.Println("Deleted security group with ID " + *name)
}
// snippet-end:[ec2.go.delete_security_group]
