// Package server The commands from the SDK are defined with `cobra` and configured with the
// `viper` package.
//
// This takes place in the `InterceptConfigsPreRunHandler` function.
// Since the `viper` package is used for configuration the precedence is dictated
// by that package. That is
//
// 1. Command line switches
// 2. Environment variables
// 3. Files from configuration values
// 4. Default values
//
// The global configuration instance exposed by the `viper` package is not
// used by Cosmos SDK in this function. A new instance of `viper.Viper` is created
// and the following is performed. The environmental variable prefix is set
// to the current program name. Environmental variables consider the underscore
// to be equivalent to the `.` or `-` character. This means that an configuration
// value called `rpc.laddr` would be read from an environmental variable called
// `MYTOOL_RPC_LADDR` if the current program name is `mytool`.
//
// Running the `InterceptConfigsPreRunHandler` also reads `app.toml`
// and `config.toml` from the home directory under the `config` directory.
// If `config.toml` or `app.toml` do not exist then those files are created
// and populated with default values. `InterceptConfigsPreRunHandler` takes
// two parameters to set/update a custom template to create custom `app.toml`.
// If these parameters are empty, the server then creates a default template
// provided by the SDK.
package server