package main

import (
	"crypto/md5"
	"errors"
	"fmt"
	. "gopkg.in/check.v1"
	"io/ioutil"
	"os"
)

type UploadTestSuite struct{}

// Gocheck boilerplate
var _ = Suite(&UploadTestSuite{})

type KeepTestClient struct {
}

func (k KeepTestClient) PutHB(hash string, buf []byte) (string, int, error) {
	return fmt.Sprintf("%x+%v", md5.Sum(buf), len(buf)), len(buf), nil
}

func (s *TestSuite) TestSimpleUpload(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	ioutil.WriteFile(tmpdir+"/"+"file1.txt", []byte("foo"), 0600)

	str, err := WriteTree(KeepTestClient{}, tmpdir)
	c.Check(err, IsNil)
	c.Check(str, Equals, ". acbd18db4cc2f85cedef654fccc4a4d8+3 0:3:file1.txt\n")
}

func (s *TestSuite) TestSimpleUploadTwofiles(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	ioutil.WriteFile(tmpdir+"/"+"file1.txt", []byte("foo"), 0600)
	ioutil.WriteFile(tmpdir+"/"+"file2.txt", []byte("bar"), 0600)

	str, err := WriteTree(KeepTestClient{}, tmpdir)
	c.Check(err, IsNil)
	c.Check(str, Equals, ". 3858f62230ac3c915f300c664312c63f+6 0:3:file1.txt 3:3:file2.txt\n")
}

func (s *TestSuite) TestSimpleUploadSubdir(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	os.Mkdir(tmpdir+"/subdir", 0700)

	ioutil.WriteFile(tmpdir+"/"+"file1.txt", []byte("foo"), 0600)
	ioutil.WriteFile(tmpdir+"/subdir/file2.txt", []byte("bar"), 0600)

	str, err := WriteTree(KeepTestClient{}, tmpdir)
	c.Check(err, IsNil)
	c.Check(str, Equals, `. acbd18db4cc2f85cedef654fccc4a4d8+3 0:3:file1.txt
./subdir 37b51d194a7513e45b56f6524f2d51f2+3 0:3:file2.txt
`)
}

func (s *TestSuite) TestSimpleUploadLarge(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	file, _ := os.Create(tmpdir + "/" + "file1.txt")
	data := make([]byte, 1024*1024-1)
	for i := range data {
		data[i] = byte(i % 10)
	}
	for i := 0; i < 65; i++ {
		file.Write(data)
	}
	file.Close()

	ioutil.WriteFile(tmpdir+"/"+"file2.txt", []byte("bar"), 0600)

	str, err := WriteTree(KeepTestClient{}, tmpdir)
	c.Check(err, IsNil)
	c.Check(str, Equals, ". 00ecf01e0d93385115c9f8bed757425d+67108864 485cd630387b6b1846fe429f261ea05f+1048514 0:68157375:file1.txt 68157375:3:file2.txt\n")
}

func (s *TestSuite) TestUploadEmptySubdir(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	os.Mkdir(tmpdir+"/subdir", 0700)

	ioutil.WriteFile(tmpdir+"/"+"file1.txt", []byte("foo"), 0600)

	str, err := WriteTree(KeepTestClient{}, tmpdir)
	c.Check(err, IsNil)
	c.Check(str, Equals, `. acbd18db4cc2f85cedef654fccc4a4d8+3 0:3:file1.txt
`)
}

func (s *TestSuite) TestUploadEmptyFile(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	ioutil.WriteFile(tmpdir+"/"+"file1.txt", []byte(""), 0600)

	str, err := WriteTree(KeepTestClient{}, tmpdir)
	c.Check(err, IsNil)
	c.Check(str, Equals, `. d41d8cd98f00b204e9800998ecf8427e+0 0:0:file1.txt
`)
}

type KeepErrorTestClient struct {
}

func (k KeepErrorTestClient) PutHB(hash string, buf []byte) (string, int, error) {
	return "", 0, errors.New("Failed!")
}

func (s *TestSuite) TestUploadError(c *C) {
	tmpdir, _ := ioutil.TempDir("", "")
	defer func() {
		os.RemoveAll(tmpdir)
	}()

	ioutil.WriteFile(tmpdir+"/"+"file1.txt", []byte("foo"), 0600)

	str, err := WriteTree(KeepErrorTestClient{}, tmpdir)
	c.Check(err, NotNil)
	c.Check(str, Equals, "")
}