package oss

import (
	"fmt"
	"os"
	"time"

	. "gopkg.in/check.v1"
)

type OssCopySuite struct {
	client *Client
	bucket *Bucket
}

var _ = Suite(&OssCopySuite{})

// Run once when the suite starts running
func (s *OssCopySuite) SetUpSuite(c *C) {
	client, err := New(endpoint, accessID, accessKey)
	c.Assert(err, IsNil)
	s.client = client

	s.client.CreateBucket(bucketName)
	time.Sleep(5 * time.Second)

	bucket, err := s.client.Bucket(bucketName)
	c.Assert(err, IsNil)
	s.bucket = bucket

	testLogger.Println("test copy started")
}

// Run before each test or benchmark starts running
func (s *OssCopySuite) TearDownSuite(c *C) {
	// Delete Part
	lmur, err := s.bucket.ListMultipartUploads()
	c.Assert(err, IsNil)

	for _, upload := range lmur.Uploads {
		var imur = InitiateMultipartUploadResult{Bucket: bucketName,
			Key: upload.Key, UploadID: upload.UploadID}
		err = s.bucket.AbortMultipartUpload(imur)
		c.Assert(err, IsNil)
	}

	//Delete Objects
	lor, err := s.bucket.ListObjects()
	c.Assert(err, IsNil)

	for _, object := range lor.Objects {
		err = s.bucket.DeleteObject(object.Key)
		c.Assert(err, IsNil)
	}

	testLogger.Println("test copy completed")
}

// Run after each test or benchmark runs
func (s *OssCopySuite) SetUpTest(c *C) {
	err := removeTempFiles("../oss", ".jpg")
	c.Assert(err, IsNil)
}

// Run once after all tests or benchmarks have finished running
func (s *OssCopySuite) TearDownTest(c *C) {
	err := removeTempFiles("../oss", ".jpg")
	c.Assert(err, IsNil)
}

// TestCopyRoutineWithoutRecovery 多线程无断点恢复的复制
func (s *OssCopySuite) TestCopyRoutineWithoutRecovery(c *C) {
	srcObjectName := objectNamePrefix + "tcrwr"
	destObjectName := srcObjectName + "-copy"
	fileName := "../sample/BingWallpaper-2015-11-07.jpg"
	newFile := "copy-new-file.jpg"

	// 上传源文件
	err := s.bucket.UploadFile(srcObjectName, fileName, 100*1024, Routines(3))
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 不指定Routines，默认单线程
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024)
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err := compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 指定线程数1
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(1))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 指定线程数3，小于分片数5
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(3))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 指定线程数5，等于分片数
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(5))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 指定线程数10，大于分片数5
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(10))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 线程值无效自动变成1
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(-1))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// option
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(3), Meta("myprop", "mypropval"))

	meta, err := s.bucket.GetObjectDetailedMeta(destObjectName)
	c.Assert(err, IsNil)
	c.Assert(meta.Get("X-Oss-Meta-Myprop"), Equals, "mypropval")

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	err = s.bucket.DeleteObject(srcObjectName)
	c.Assert(err, IsNil)
}

// CopyErrorHooker CopyPart请求Hook
func CopyErrorHooker(part copyPart) error {
	if part.Number == 5 {
		time.Sleep(time.Second)
		return fmt.Errorf("ErrorHooker")
	}
	return nil
}

// TestCopyRoutineWithoutRecoveryNegative 多线程无断点恢复的复制
func (s *OssCopySuite) TestCopyRoutineWithoutRecoveryNegative(c *C) {
	srcObjectName := objectNamePrefix + "tcrwrn"
	destObjectName := srcObjectName + "-copy"
	fileName := "../sample/BingWallpaper-2015-11-07.jpg"

	// 上传源文件
	err := s.bucket.UploadFile(srcObjectName, fileName, 100*1024, Routines(3))
	c.Assert(err, IsNil)

	copyPartHooker = CopyErrorHooker
	// worker线程错误
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 100*1024, Routines(2))

	c.Assert(err, NotNil)
	c.Assert(err.Error(), Equals, "ErrorHooker")
	copyPartHooker = defaultCopyPartHook

	// 源Bucket不存在
	err = s.bucket.CopyFile("NotExist", srcObjectName, destObjectName, 100*1024, Routines(2))
	c.Assert(err, NotNil)

	// 源Object不存在
	err = s.bucket.CopyFile(bucketName, "NotExist", destObjectName, 100*1024, Routines(2))

	// 指定的分片大小无效
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024, Routines(2))
	c.Assert(err, NotNil)

	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*1024*1024*100, Routines(2))
	c.Assert(err, NotNil)

	// 删除源文件
	err = s.bucket.DeleteObject(srcObjectName)
	c.Assert(err, IsNil)
}

// TestCopyRoutineWithRecovery 多线程且有断点恢复的复制
func (s *OssCopySuite) TestCopyRoutineWithRecovery(c *C) {
	srcObjectName := objectNamePrefix + "tcrtr"
	destObjectName := srcObjectName + "-copy"
	fileName := "../sample/BingWallpaper-2015-11-07.jpg"
	newFile := "copy-new-file.jpg"

	// 上传源文件
	err := s.bucket.UploadFile(srcObjectName, fileName, 100*1024, Routines(3))
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// Routines默认值，CP开启默认路径是destObjectName+.cp
	// 第一次上传，上传4片
	copyPartHooker = CopyErrorHooker
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Checkpoint(true, ""))
	c.Assert(err, NotNil)
	c.Assert(err.Error(), Equals, "ErrorHooker")
	copyPartHooker = defaultCopyPartHook

	// check cp
	ccp := copyCheckpoint{}
	err = ccp.load(destObjectName + ".cp")
	c.Assert(err, IsNil)
	c.Assert(ccp.Magic, Equals, copyCpMagic)
	c.Assert(len(ccp.MD5), Equals, len("LC34jZU5xK4hlxi3Qn3XGQ=="))
	c.Assert(ccp.SrcBucketName, Equals, bucketName)
	c.Assert(ccp.SrcObjectKey, Equals, srcObjectName)
	c.Assert(ccp.DestBucketName, Equals, bucketName)
	c.Assert(ccp.DestObjectKey, Equals, destObjectName)
	c.Assert(len(ccp.CopyID), Equals, len("3F79722737D1469980DACEDCA325BB52"))
	c.Assert(ccp.ObjStat.Size, Equals, int64(482048))
	c.Assert(len(ccp.ObjStat.LastModified), Equals, len("2015-12-17 18:43:03 +0800 CST"))
	c.Assert(ccp.ObjStat.Etag, Equals, "\"2351E662233817A7AE974D8C5B0876DD-5\"")
	c.Assert(len(ccp.Parts), Equals, 5)
	c.Assert(len(ccp.todoParts()), Equals, 1)
	c.Assert(ccp.PartStat[4], Equals, false)

	// 第二次上传，完成剩余的一片
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Checkpoint(true, ""))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err := compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	err = ccp.load(fileName + ".cp")
	c.Assert(err, NotNil)

	// Routines指定，CP指定
	copyPartHooker = CopyErrorHooker
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(2), Checkpoint(true, srcObjectName+".cp"))
	c.Assert(err, NotNil)
	c.Assert(err.Error(), Equals, "ErrorHooker")
	copyPartHooker = defaultCopyPartHook

	// check cp
	ccp = copyCheckpoint{}
	err = ccp.load(srcObjectName + ".cp")
	c.Assert(err, IsNil)
	c.Assert(ccp.Magic, Equals, copyCpMagic)
	c.Assert(len(ccp.MD5), Equals, len("LC34jZU5xK4hlxi3Qn3XGQ=="))
	c.Assert(ccp.SrcBucketName, Equals, bucketName)
	c.Assert(ccp.SrcObjectKey, Equals, srcObjectName)
	c.Assert(ccp.DestBucketName, Equals, bucketName)
	c.Assert(ccp.DestObjectKey, Equals, destObjectName)
	c.Assert(len(ccp.CopyID), Equals, len("3F79722737D1469980DACEDCA325BB52"))
	c.Assert(ccp.ObjStat.Size, Equals, int64(482048))
	c.Assert(len(ccp.ObjStat.LastModified), Equals, len("2015-12-17 18:43:03 +0800 CST"))
	c.Assert(ccp.ObjStat.Etag, Equals, "\"2351E662233817A7AE974D8C5B0876DD-5\"")
	c.Assert(len(ccp.Parts), Equals, 5)
	c.Assert(len(ccp.todoParts()), Equals, 1)
	c.Assert(ccp.PartStat[4], Equals, false)

	// 第二次上传，完成剩余的一片
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(2), Checkpoint(true, srcObjectName+".cp"))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	err = ccp.load(srcObjectName + ".cp")
	c.Assert(err, NotNil)

	// 一次完成上传，中间没有错误
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(3), Checkpoint(true, ""))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 用多协程下载，中间没有错误
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(10), Checkpoint(true, ""))
	c.Assert(err, IsNil)

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// option
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(5), Checkpoint(true, ""), Meta("myprop", "mypropval"))
	c.Assert(err, IsNil)

	meta, err := s.bucket.GetObjectDetailedMeta(destObjectName)
	c.Assert(err, IsNil)
	c.Assert(meta.Get("X-Oss-Meta-Myprop"), Equals, "mypropval")

	err = s.bucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = s.bucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 删除源文件
	err = s.bucket.DeleteObject(srcObjectName)
	c.Assert(err, IsNil)
}

// TestCopyRoutineWithRecoveryNegative 多线程无断点恢复的复制
func (s *OssCopySuite) TestCopyRoutineWithRecoveryNegative(c *C) {
	srcObjectName := objectNamePrefix + "tcrwrn"
	destObjectName := srcObjectName + "-copy"

	// 源Bucket不存在
	err := s.bucket.CopyFile("NotExist", srcObjectName, destObjectName, 100*1024, Checkpoint(true, ""))
	c.Assert(err, NotNil)
	c.Assert(err, NotNil)

	// 源Object不存在
	err = s.bucket.CopyFile(bucketName, "NotExist", destObjectName, 100*1024, Routines(2), Checkpoint(true, ""))
	c.Assert(err, NotNil)

	// 指定的分片大小无效
	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024, Checkpoint(true, ""))
	c.Assert(err, NotNil)

	err = s.bucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*1024*1024*100, Routines(2), Checkpoint(true, ""))
	c.Assert(err, NotNil)
}

// TestCopyFileCrossBucket 跨Bucket直接的复制
func (s *OssCopySuite) TestCopyFileCrossBucket(c *C) {
	destBucketName := bucketName + "-cfcb-desc"
	srcObjectName := objectNamePrefix + "tcrtr"
	destObjectName := srcObjectName + "-copy"
	fileName := "../sample/BingWallpaper-2015-11-07.jpg"
	newFile := "copy-new-file.jpg"

	destBucket, err := s.client.Bucket(destBucketName)
	c.Assert(err, IsNil)

	// 创建目标Bucket
	err = s.client.CreateBucket(destBucketName)

	// 上传源文件
	err = s.bucket.UploadFile(srcObjectName, fileName, 100*1024, Routines(3))
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 复制文件
	err = destBucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(5), Checkpoint(true, ""))
	c.Assert(err, IsNil)

	err = destBucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err := compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = destBucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 带option的复制
	err = destBucket.CopyFile(bucketName, srcObjectName, destObjectName, 1024*100, Routines(10), Checkpoint(true, "copy.cp"), Meta("myprop", "mypropval"))
	c.Assert(err, IsNil)

	err = destBucket.GetObjectToFile(destObjectName, newFile)
	c.Assert(err, IsNil)

	eq, err = compareFiles(fileName, newFile)
	c.Assert(err, IsNil)
	c.Assert(eq, Equals, true)

	err = destBucket.DeleteObject(destObjectName)
	c.Assert(err, IsNil)
	os.Remove(newFile)

	// 删除目标Bucket
	err = s.client.DeleteBucket(destBucketName)
	c.Assert(err, IsNil)
}