new: feat: add keypair validation

core/create.go

@@ -84,6 +84,12 @@ func (h *Handler) Create(ctx context.Context, opts CreateOptions) (CreateOutput,
 		startupScript = script
 	}
 
+	// validate key pair
+	_, err = helpers.GetKeyPair(ctx, client, keyName)
+	if err != nil {
+		return CreateOutput{}, err
+	}
+
 	// get the image of the dev space machine
 	devSpaceAMI, err := helpers.GetImageFromFilter(ctx, client, helpers.AMIFilter{
 		ID:    opts.DevSpaceAMI.ID,

core/helpers/keypair.go

@@ -0,0 +1,25 @@
+package helpers
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/aws/aws-sdk-go-v2/service/ec2"
+	"github.com/aws/aws-sdk-go-v2/service/ec2/types"
+	"github.com/felipemarinho97/invest-path/clients"
+)
+
+func GetKeyPair(ctx context.Context, client clients.IEC2Client, keyName string) (*types.KeyPairInfo, error) {
+	keyPairs, err := client.DescribeKeyPairs(ctx, &ec2.DescribeKeyPairsInput{
+		KeyNames: []string{keyName},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	if len(keyPairs.KeyPairs) == 0 {
+		return nil, fmt.Errorf("no key pair found with name %s", keyName)
+	}
+
+	return &keyPairs.KeyPairs[0], nil
+}