gitops create template requires you to type too many params

[foot]

e.g.

gitops create template capd-capi-template.yaml --values CLUSTER_NAME=ewq,FOO=foo,BAR=bar

We could easily use viper to read all the params from a config file instead, e.g.

gitops create template --config capd-capi-template-config.yaml

Given capd-capi-template-config.yaml

template-name: capd-capi-template.yaml
values:
  - CLUSTER_NAME=ewq
  - FOO=foo
  - BAR=bar
output-dir: ./clusters/management/clusters/

[foot]

Good guide to viper here with a link to example repo https://carolynvanslyck.com/blog/2020/08/sting-of-the-viper/

Also check out

weave-gitops-enterprise/cmd/clusters-service/app/server.go

Lines 279 to 307 in d28b382

	func initializeConfig(cmd *cobra.Command) error {
	// Set the base name of the config file, without the file extension.
	viper.SetConfigName(defaultConfigFilename)
	viper.AddConfigPath(".")
	if err := viper.ReadInConfig(); err != nil {
	if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
	return err
	}
	}
	// Align flag and env var names
	replacer := strings.NewReplacer("-", "_")
	viper.SetEnvKeyReplacer(replacer)
	// Read all env var values into viper
	viper.AutomaticEnv()
	// Read all flag values into viper
	// So they can be read from `viper.Get`, (sometimes user by weave-gitops (core))
	err := viper.BindPFlags(cmd.Flags())
	if err != nil {
	return err
	}
	return nil
	}