package test

import (
	"os"
	"testing"

	"github.com/Marcusk19/dotctl/tools"
	"github.com/spf13/afero"
)

func init() {
  tools.SetTestFs()
}


func TestCopyFile(t *testing.T) {
  fs := afero.NewMemMapFs()

  fs.MkdirAll("test/src", 0755)
  fs.MkdirAll("test/dest", 0755)
  err := afero.WriteFile(fs, "test/src/a.txt", []byte("file a"), 0644)
  if err != nil {
    t.Errorf("problem creating source file: %s", err.Error())
  }

  err = tools.CopyFile(fs, "test/src/a.txt", "test/dest/a.txt")
  if err != nil {
    t.Error(err.Error())
  }
  _, err = fs.Stat("test/dest/a.txt")
  if os.IsNotExist(err) {
    t.Errorf("expected destination file does not exist")
  }
  
  result, err := afero.ReadFile(fs, "test/dest/a.txt")
  if err != nil {
    t.Error(err.Error())
  }

  if string(result) != "file a" {
    t.Errorf("expected 'file a' got '%s'", string(result))
  }
  
}

func TestCopyDir(t *testing.T) {
  fs := afero.NewMemMapFs()

  fs.MkdirAll("test/src/dirA", 0755)
  fs.MkdirAll("test/dest/", 0755)
  fs.Mkdir("test/src/dirA/dirB", 0755)

  err := afero.WriteFile(fs, "test/src/dirA/a.txt", []byte("file a"), 0644)
  if err != nil {
    t.Error(err.Error())
  }
  err = afero.WriteFile(fs, "test/src/dirA/dirB/b.txt", []byte("file b"), 0644)
  if err != nil {
    t.Error(err.Error())
  }

  err = tools.CopyDir(fs, "test/src", "test/dest")
  if err != nil {
    t.Error(err.Error())
  }

  result, err := afero.ReadFile(fs, "test/dest/dirA/a.txt")
  if err != nil {
    t.Error(err.Error())
  }

  if string(result) != "file a" {
    t.Errorf("expected 'file a' got '%s'", string(result))
  }

  result, err = afero.ReadFile(fs, "test/dest/dirA/dirB/b.txt")
  if err != nil {
    t.Error(err.Error())
  }

  if string(result) != "file b" {
    t.Errorf("expected 'file b' got '%s'", string(result))
  }

}