commands.v

module vargus

// NOTE:
// The function below is repetitive,
// I explicitly did not combine them since it leaks pointer 
//  memory error (indirectly lost) in valgrind.

// new creates a new commander root instance
pub fn new(cmdConfig CmdConfig) &Commander {
	// commands created from new are root
	return create_command(cmdConfig, true)
}

// add_command adds a command to the main vargus commander instance
pub fn (mut c Commander) add_command(cmdConfig CmdConfig) &Commander {
	// commands created from add_command are non-root
	cmd := create_command(cmdConfig, false)

	// append to parent command's sub_commands
	c.sub_commands << cmd
	c.sub_commands_string << cmd.command

	// return the cmd from the sub_commands
	return c.sub_commands[c.sub_commands.index(cmd)]
}

fn create_command(cmdConfig CmdConfig, root bool) &Commander {
	// check cmdconfig command
	command_checker(cmdConfig)

	t := CmdConfig{}

	return &Commander{
		command: cmdConfig.command
		short_desc: cmdConfig.short_desc
		long_desc: cmdConfig.long_desc
		allow_next_args: cmdConfig.allow_next_args
		is_root: root
		function: cmdConfig.function
		exec_func: if t.function != cmdConfig.function { true } else { false }
		hooks: CmdHooks{
			pre_run: cmdConfig.hooks.pre_run
			use_pre_run: if t.hooks.pre_run != cmdConfig.hooks.pre_run { true } else { false }
			post_run: cmdConfig.hooks.post_run
			use_post_run: if t.hooks.post_run != cmdConfig.hooks.post_run { true } else { false }
		}
		persistent_hooks: PersistentCmdHooks{
			persistent_pre_run: cmdConfig.hooks.persistent_pre_run
			use_persistent_pre_run: if t.hooks.persistent_pre_run != cmdConfig.hooks.persistent_pre_run {
				true
			} else {
				false
			}
			persistent_post_run: cmdConfig.hooks.persistent_post_run
			use_persistent_post_run: if t.hooks.persistent_post_run != cmdConfig.hooks.persistent_post_run {
				true
			} else {
				false
			}
		}
		config: CommandConfig{
			errors: ErrorConfig{
				required: cmdConfig.config.errors.required
				use_custom_required: if t.config.errors.required != cmdConfig.config.errors.required {
					true
				} else {
					false
				}
				value: cmdConfig.config.errors.value
				use_custom_value: if t.config.errors.value != cmdConfig.config.errors.value {
					true
				} else {
					false
				}
				blank: cmdConfig.config.errors.blank
				use_custom_blank: if t.config.errors.blank != cmdConfig.config.errors.blank {
					true
				} else {
					false
				}
				unknown: cmdConfig.config.errors.unknown
				use_custom_unknown: if t.config.errors.unknown != cmdConfig.config.errors.unknown {
					true
				} else {
					false
				}
				command: cmdConfig.config.errors.command
				use_custom_command: if t.config.errors.command != cmdConfig.config.errors.command {
					true
				} else {
					false
				}
			}
			custom_help: cmdConfig.config.help
			use_custom_help: if t.config.help != cmdConfig.config.help { true } else { false }
			validators: ValidatorsConfig{
				integer: cmdConfig.config.validators.integer
				use_custom_integer: if t.config.validators.integer != cmdConfig.config.validators.integer {
					true
				} else {
					false
				}
				string_var: cmdConfig.config.validators.string_var
				use_custom_string_var: if t.config.validators.string_var != cmdConfig.config.validators.string_var {
					true
				} else {
					false
				}
				float: cmdConfig.config.validators.float
				use_custom_float: if t.config.validators.float != cmdConfig.config.validators.float {
					true
				} else {
					false
				}
				boolean: cmdConfig.config.validators.boolean
				use_custom_boolean: if t.config.validators.boolean != cmdConfig.config.validators.boolean {
					true
				} else {
					false
				}
			}
		}
	}
}