package utils

import (
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"
	"strings"

	"github.com/sirupsen/logrus"
)

func ExistsFile(name string) bool {
	_, err := ioutil.ReadFile(name)
	return err == nil
}

func ExistsDir(name string) bool {
	_, err := ioutil.ReadDir(name)
	return err == nil
}

func MkdirAll(dir string) error {
	err := os.MkdirAll(dir, 0755)
	if err != nil {
		Log.WithError(err).Panicf("failed to create dir %v", dir)
	}
	return err
}

func RemoveAll(name string) error {
	err := os.RemoveAll(name)
	if err != nil {
		Log.WithError(err).Panicf("failed to remove %v", name)
	}
	return err
}

func Save(name, data string) error {
	err := ioutil.WriteFile(name, []byte(data), 0644)
	if err != nil {
		Log.WithError(err).Panicf("failed to save %v", name)
	} else {
		Log.Debugf("saved file len(%v) %v", len(data), name)
	}
	return err
}

func SaveExec(name, data string) error {
	err := ioutil.WriteFile(name, []byte(data), 0755)
	if err != nil {
		Log.WithError(err).Panicf("failed to save %v", name)
	} else {
		Log.Debugf("saved file len(%v) %v", len(data), name)
	}
	return err
}

func SaveBytes(name string, data []byte) error {
	err := ioutil.WriteFile(name, data, 0644)
	if err != nil {
		Log.WithError(err).Panicf("failed to save %v", name)
	}
	return err
}

//TODO: export error
func Load(name string) string {
	out, err := ioutil.ReadFile(name)
	if err != nil {
		Log.WithError(err).Errorf("failed to load %v", name)
	}
	return string(out)
}

//TODO: export error
func LoadOptional(name string) string {
	out, err := ioutil.ReadFile(name)
	if err != nil {
		Log.WithError(err).Debugf("failed to load (optional) %v", name)
	}
	return string(out)
}

func GoQtPkgPath(s ...string) string {
	return filepath.Join(MustGoPath(), "src", "github.com", "therecipe", "qt", filepath.Join(s...))
}

//TODO: export error
func RunCmd(cmd *exec.Cmd, name string) string {
	fields := logrus.Fields{"func": "RunCmd", "name": name, "cmd": strings.Join(cmd.Args, " "), "env": strings.Join(cmd.Env, " ")}
	Log.WithFields(fields).Debug("Execute")
	out, err := cmd.CombinedOutput()
	if err != nil {
		Log.WithError(err).WithFields(fields).Error("failed to run command")
		println(string(out))
		os.Exit(1)
	}
	return string(out)
}

//TODO: export error
func RunCmdOptional(cmd *exec.Cmd, name string) string {
	fields := logrus.Fields{"func": "RunCmdOptional", "name": name, "cmd": strings.Join(cmd.Args, " "), "env": strings.Join(cmd.Env, " ")}
	Log.WithFields(fields).Debug("Execute")
	out, err := cmd.CombinedOutput()
	if err != nil {
		Log.WithError(err).WithFields(fields).Error("failed to run command")
		println(string(out))
	}
	return string(out)
}

func RunCmdOptionalError(cmd *exec.Cmd, name string) (string, error) {
	fields := logrus.Fields{"func": "RunCmdOptionalError", "name": name, "cmd": strings.Join(cmd.Args, " "), "env": strings.Join(cmd.Env, " ")}
	Log.WithFields(fields).Debug("Execute")
	out, err := cmd.CombinedOutput()
	if err != nil {
		Log.WithError(err).WithFields(fields).Error("failed to run command")
		println(string(out))
	}
	return string(out), err
}