package pcre_test

import (
	"os"
	"testing"

	"go.elara.ws/pcre"
)

func TestCompileGlob(t *testing.T) {
	r, err := pcre.CompileGlob("/**/bin")
	if err != nil {
		t.Fatal(err)
	}

	if !r.MatchString("/bin") {
		t.Error("expected /bin to match")
	}

	if !r.MatchString("/usr/bin") {
		t.Error("expected /usr/bin to match")
	}

	if !r.MatchString("/usr/local/bin") {
		t.Error("expected /usr/local/bin to match")
	}

	if r.MatchString("/usr") {
		t.Error("expected /usr not to match")
	}

	if r.MatchString("/usr/local") {
		t.Error("expected /usr/local not to match")
	}

	if r.MatchString("/home") {
		t.Error("expected /home not to match")
	}
}

func TestGlob(t *testing.T) {
	err := os.MkdirAll("pcretest/dir1", 0755)
	if err != nil {
		t.Fatal(err)
	}

	err = os.MkdirAll("pcretest/dir2", 0755)
	if err != nil {
		t.Fatal(err)
	}

	err = os.MkdirAll("pcretest/test1/dir4", 0755)
	if err != nil {
		t.Fatal(err)
	}

	err = touch("pcretest/file1")
	if err != nil {
		t.Fatal(err)
	}
	
	err = touch("pcretest/file2")
	if err != nil {
		t.Fatal(err)
	}

	err = touch("pcretest/test1/dir4/text.txt")
	if err != nil {
		t.Fatal(err)
	}

	matches, err := pcre.Glob("pcretest")
	if err != nil {
		t.Fatal(err)
	}
	if len(matches) != 1 || matches[0] != "pcretest" {
		t.Errorf("expected [pcretest], got %v", matches)
	}

	matches, err = pcre.Glob("pcretest/dir*")
	if err != nil {
		t.Fatal(err)
	}
	if len(matches) != 2 ||
		matches[0] != "pcretest/dir1" ||
		matches[1] != "pcretest/dir2" {
		t.Errorf("expected [pcretest/dir1 pcretest/dir2], got %v", matches)
	}

	matches, err = pcre.Glob("pcretest/file*")
	if err != nil {
		t.Fatal(err)
	}
	if len(matches) != 2 ||
		matches[0] != "pcretest/file1" ||
		matches[1] != "pcretest/file2" {
		t.Errorf("expected [pcretest/file1 pcretest/file2], got %v", matches)
	}

	matches, err = pcre.Glob("pcretest/**/*.txt")
	if err != nil {
		t.Fatal(err)
	}
	if len(matches) != 1 ||
		matches[0] != "pcretest/test1/dir4/text.txt" {
		t.Errorf("expected [pcretest/test1/dir4/text.txt], got %v", matches)
	}

	err = os.RemoveAll("pcretest")
	if err != nil {
		t.Fatal(err)
	}
}

func touch(path string) error {
	fl, err := os.OpenFile(path, os.O_CREATE, 0644)
	if err != nil {
		return err
	}
	return fl.Close()
}