package conf

import (
	"errors"
	"os"
)

// reverse look up map
var dirToNick map[string]string = make(map[string]string)



// given a valid deployment, add it
// internal, thread unsafe
func addDeployment(d *Msg) error {
	if err := validateDeployment(d); err != nil {
		d.reply <- err
		return err
	}
	conf.Deployments[d.Args["name"]] = d.Args["path"]
	dirToNick[d.Args["path"]] = d.Args["name"]
	saveConf()
	d.reply <- nil
	return nil
}
/*
func RmDeployment(string arg) error {
    reply = make(chan error)
    rmDeploymentChan <-
    
    	// Assume nick, check if registered
	deps := GetConf().Deployments
	arg := args[0]
	if _,ok := deps[arg]; !ok {
		// not a registered nick, try as path
		absPath := absPath(path, arg)
//		if _,ok := conf.
	}
}
*/
// Validate a deployment is ok to insert
// internal thread unsafe
func validateDeployment(d *Msg) error {
	// check if exists
	if _, ok := conf.Deployments[d.Args["Name"]]; ok {
		return errors.New("Deployment with that name already exists")
	}

	if r, ok := dirToNick[d.Args["path"]]; ok {
		return errors.New("Directory with that name already registered under nick '" + r + "'")
	}

	// check if dir exists
	if _, err := os.Stat(d.Args["path"]); err != nil {
		return err
	}
	return nil
}