package config

import (
	"os"
	"path/filepath"
	"strings"
	"sync"
)

// an experiment to see if this is useful
var saveMu sync.RWMutex

// returns true if config is working okay
func InitValid() bool {
	saveMu.Lock()
	defer saveMu.Unlock()
	if configPB == nil {
		// todo: try to re-init it here
		return false
	}
	return true
}

// saves your applications config file
func Save() error {
	saveMu.Lock()
	defer saveMu.Unlock()
	basedir, _ := filepath.Split(configPB.Filename)
	if err := os.MkdirAll(basedir, os.ModePerm); err != nil {
		return err
	}
	err := SavePB(configPB)
	return err
}

func Get(flag string) string {
	saveMu.Lock()
	defer saveMu.Unlock()
	if configPB == nil {
		return ""
	}
	c := findByLower(flag)
	if c == nil {
		return ""
	}

	return c.Value
}

func findByLower(lookingFor string) *Config {
	for c := range configPB.IterAll() {
		if strings.ToLower(c.Key) == strings.ToLower(lookingFor) {
			return c
		}
	}
	return nil
}

func True(flag string) bool {
	saveMu.Lock()
	defer saveMu.Unlock()
	if configPB == nil {
		return false
	}
	found := configPB.FindByKey(flag)
	if found == nil {
		return false
	}
	if strings.ToLower(found.Value) == "true" {
		return true
	}
	return false
}

func Set(key string, newValue string) error {
	saveMu.Lock()
	defer saveMu.Unlock()
	if configPB == nil {
		return NotInitialized
	}
	found := configPB.FindByKey(key)
	if found != nil {
		found.Value = newValue
	}

	newvar := new(Config)
	newvar.Key = key
	newvar.Value = newValue
	configPB.Append(newvar)
	return nil
}