feat: add --check flag to the update command

CONTRIBUTORS.md

@@ -11,4 +11,5 @@ We contributors to BuildSafe:
 * House (@dr-housemd)
 * Rakshit(@rakshitgondwal)
 * Praful(@Horiodino)
-* Sanyam(@sanyamjain04)
+* Sanyam(@sanyamjain04)
+* Hanshal(@hanshal101)

cmd/update/update.go

@@ -19,6 +19,8 @@ import (
 	"github.com/buildsafedev/bsf/pkg/update"
 )
 
+var check bool
+
 // UpdateCmd represents the update command
 var UpdateCmd = &cobra.Command{
 	Use:   "update",
@@ -29,8 +31,7 @@ var UpdateCmd = &cobra.Command{
 
 		Currently, only packages following semver versioning are supported.
 
-
-	`,
+		`,
 	Run: func(cmd *cobra.Command, args []string) {
 		fmt.Println(styles.TextStyle.Render("Updating..."))
 
@@ -42,7 +43,7 @@ var UpdateCmd = &cobra.Command{
 
 		data, err := os.ReadFile("bsf.hcl")
 		if err != nil {
-			fmt.Println(styles.ErrorStyle.Render("error: ", err.Error()))
+			fmt.Println(styles.ErrorStyle.Render("error:", err.Error()))
 			os.Exit(1)
 		}
 
@@ -55,7 +56,7 @@ var UpdateCmd = &cobra.Command{
 
 		sc, err := search.NewClientWithAddr(conf.BuildSafeAPI, conf.BuildSafeAPITLS)
 		if err != nil {
-			fmt.Println(styles.ErrorStyle.Render("error: ", err.Error()))
+			fmt.Println(styles.ErrorStyle.Render("error:", err.Error()))
 			os.Exit(1)
 		}
 
@@ -70,6 +71,15 @@ var UpdateCmd = &cobra.Command{
 			Runtime:     runtimeVersions,
 		}
 
+		if check {
+			if !update.ComparePackages(hconf.Packages.Development, devVersions) || !update.ComparePackages(hconf.Packages.Runtime, runtimeVersions) {
+				fmt.Println(styles.WarnStyle.Render("Updates are available"))
+				os.Exit(1)
+			}
+			fmt.Println(styles.SucessStyle.Render("No updates available"))
+			os.Exit(0)
+		}
+
 		fh, err := hcl2nix.NewFileHandlers(true)
 		if err != nil {
 			fmt.Println(styles.ErrorStyle.Render("Error creating file handlers: %s", err.Error()))
@@ -95,7 +105,6 @@ var UpdateCmd = &cobra.Command{
 		}
 
 		fmt.Println(styles.SucessStyle.Render("Updated ran successfully"))
-
 	},
 }
 
@@ -129,9 +138,7 @@ func parsePackagesForUpdates(versionMap map[string]*buildsafev1.FetchPackagesRes
 		case update.UpdateTypePinned:
 			newVersions = append(newVersions, k)
 			continue
-
 		}
-
 	}
 	return newVersions
 }
@@ -165,3 +172,7 @@ func fetchPackageVersions(packages []string, sc buildsafev1.SearchServiceClient)
 
 	return versionsMap
 }
+
+func init() {
+	UpdateCmd.PersistentFlags().BoolVarP(&check, "check", "c", false, "Check for updates without applying them")
+}

pkg/update/update.go

@@ -101,3 +101,22 @@ func TrimVersionInfo(pkg string) (string, string) {
 
 	return name, version
 }
+
+// ComparePackages compares the devVersions and the runtimeVersions
+func ComparePackages(a, b []string) bool {
+	if len(a) != len(b) {
+		return false
+	}
+
+	counts := make(map[string]bool)
+	for _, item := range a {
+		counts[item] = true
+	}
+	for _, item := range b {
+		if !counts[item] {
+			return false
+		}
+	}
+
+	return true
+}

pkg/update/update_test.go

@@ -198,3 +198,39 @@ func TestParseUpdateType(t *testing.T) {
 		})
 	}
 }
+
+func TestComparePackages(t *testing.T) {
+	tests := []struct {
+		name string
+		a    []string
+		b    []string
+		want bool
+	}{
+		{
+			name: "Test Case 1 - Equal slices",
+			a:    []string{"pkg1@~v1.0.0", "pkg2@~v1.1.0", "pkg3@~v1.2.0"},
+			b:    []string{"pkg3@~v1.2.0", "pkg2@~v1.1.0", "pkg1@~v1.0.0"},
+			want: true,
+		},
+		{
+			name: "Test Case 2 - Different slices",
+			a:    []string{"pkg1@~v1.0.0", "pkg2@~v1.1.0", "pkg3@~v1.2.0"},
+			b:    []string{"pkg1@~v1.2.0", "pkg2@~v1.1.0", "pkg3@~v1.3.0"},
+			want: false,
+		},
+		{
+			name: "Test Case 3 - Different lengths",
+			a:    []string{"pkg1@~v1.0.0", "pkg2@~v1.1.0"},
+			b:    []string{"pkg2@~v1.2.0", "pkg1@~v1.1.0", "pkg3@~v1.0.0"},
+			want: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ComparePackages(tt.a, tt.b); got != tt.want {
+				t.Errorf("CompareVersions() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}