Convert build number to int

internal/build/resolver/url.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"regexp"
+	"strconv"
 
 	"github.com/buildkite/cli/v3/internal/build"
 )
@@ -13,21 +14,31 @@ func ResolveFromURL(args []string) BuildResolverFn {
 		if len(args) != 1 {
 			return nil, fmt.Errorf("Incorrect number of arguments, expected 1, got %d", len(args))
 		}
-		resolvedURL := splitBuildURL(args[0])
+		resolvedBuild := splitBuildURL(args[0])
 
-		org, name, buildNumber := resolvedURL.Organization, resolvedURL.Pipeline, resolvedURL.BuildNumber
+		if resolvedBuild == nil {
+			return nil, fmt.Errorf("Unable to resolve build from URL: %s", args[0])
+		}
 
-		return &build.Build{Pipeline: name, Organization: org, BuildNumber: buildNumber}, nil
+		return resolvedBuild, nil
 	}
 }
 
-func splitBuildURL(url string) build.Build {
+func splitBuildURL(url string) *build.Build {
 	re := regexp.MustCompile(`https://buildkite.com/([^/]+)/([^/]+)/builds/(\d+)$`)
 	matches := re.FindStringSubmatch(url)
+	if matches == nil || len(matches) != 4 {
+		return nil
+	}
+
+	num, err := strconv.Atoi(matches[3])
+	if err != nil {
+		return nil
+	}
 
-	return build.Build{
+	return &build.Build{
 		Organization: matches[1],
 		Pipeline:     matches[2],
-		BuildNumber:  matches[3],
+		BuildNumber:  num,
 	}
 }