(feat): Warning users about create OSTree static deltas before rollin…

…g out waves

Signed-off-by: Camila Macedo <[email protected]>

subcommands/waves/init.go

@@ -27,7 +27,12 @@ func init() {
 This command only initializes a wave, but does not provision its updates to devices.
 Use a "fioctl wave rollout <wave> <group>" to trigger updates of this wave to a device group.
 Use a "fioctl wave complete <wave>" to update all devices (make it globally available).
-Use a "fioctl wave cancel <wave> to cancel a wave (make it no longer available).`,
+Use a "fioctl wave cancel <wave> to cancel a wave (make it no longer available).
+
+We recommend that you generate static deltas for your production targets to optimize 
+the size of the update. Please, consider generating a static delta for targets using: 
+$ fioctl targets static-deltas.
+`,
 		Run:  doInitWave,
 		Args: cobra.ExactArgs(3),
 		Example: `
@@ -145,6 +150,24 @@ func doInitWave(cmd *cobra.Command, args []string) {
 	} else {
 		subcommands.DieNotNil(api.FactoryCreateWave(factory, &wave), "Failed to create a wave")
 	}
+
+	if !hasStaticDelta() {
+		fmt.Print(`
+WARNING: You created a wave for a target version without static deltas.
+
+We recommend that you generate static deltas for your production targets to optimize
+the size of the update. Please, consider generating a static delta for targets using:
+$ fioctl targets static-deltas.
+
+You can then cancel this wave and create a new one for a target with a static delta.
+`)
+
+	}
+}
+
+func hasStaticDelta() bool {
+	// TODO:
+	return true
 }
 
 func pruneTargets(currentTargets *client.AtsTargetsMeta, versions []string) client.AtsTargetsMeta {