func (cmd *Push) createAppSetFromContextAndManifest(contextApp models.AppParams, manifestApps []models.AppParams) ([]models.AppParams, error) {
var err error
var apps []models.AppParams
switch len(manifestApps) {
case 0:
if contextApp.Name == nil {
return nil, errors.New(
T("Incorrect Usage. The push command requires an app name. The app name can be supplied as an argument or with a manifest.yml file.") +
"\n\n" +
commandregistry.Commands.CommandUsage("push"),
)
}
err = addApp(&apps, contextApp)
case 1:
manifestApps[0].Merge(&contextApp)
err = addApp(&apps, manifestApps[0])
default:
selectedAppName := contextApp.Name
contextApp.Name = nil
if !contextApp.IsEmpty() {
return nil, errors.New(T("Incorrect Usage. Command line flags (except -f) cannot be applied when pushing multiple apps from a manifest file."))
}
if selectedAppName != nil {
var foundApp bool
for _, appParams := range manifestApps {
if appParams.Name != nil && *appParams.Name == *selectedAppName {
foundApp = true
err = addApp(&apps, appParams)
}
}
if !foundApp {
err = errors.New(T("Could not find app named '{{.AppName}}' in manifest", map[string]interface{}{"AppName": *selectedAppName}))
}
} else {
for _, manifestApp := range manifestApps {
err = addApp(&apps, manifestApp)
}
}
}
if err != nil {
return nil, errors.New(T("Error: {{.Err}}", map[string]interface{}{"Err": err.Error()}))
}
return apps, nil
}