package operation

import (
	"bytes"
	"fmt"
	"io"
	"net/http"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/seaweedfs/seaweedfs/weed/storage/needle"
	"github.com/seaweedfs/seaweedfs/weed/util"
)

type MockClient struct {
	needleHandling func(n *needle.Needle, originalSize int, e error)
}

func (m *MockClient) Do(req *http.Request) (*http.Response, error) {
	n, originalSize, _, err := needle.CreateNeedleFromRequest(req, false, 1024*1024, &bytes.Buffer{})
	if m.needleHandling != nil {
		m.needleHandling(n, originalSize, err)
	}
	return &http.Response{
		StatusCode: http.StatusNoContent,
	}, io.EOF
}

/*

The mime type is always the value passed in.

Compress or not depends on the content detection, file name extension, and compression ratio.

If the content is already compressed, need to know the content size.

*/

func TestCreateNeedleFromRequest(t *testing.T) {
	mockClient := &MockClient{}
	uploader := newUploader(mockClient)

	{
		mockClient.needleHandling = func(n *needle.Needle, originalSize int, err error) {
			assert.Equal(t, nil, err, "upload: %v", err)
			assert.Equal(t, "", string(n.Mime), "mime detection failed: %v", string(n.Mime))
			assert.Equal(t, true, n.IsCompressed(), "this should be compressed")
			assert.Equal(t, true, util.IsGzippedContent(n.Data), "this should be gzip")
			fmt.Printf("needle: %v, originalSize: %d\n", n, originalSize)
		}
		uploadOption := &UploadOption{
			UploadUrl:         "http://localhost:8080/389,0f084d17353afda0",
			Filename:          "t.txt",
			Cipher:            false,
			IsInputCompressed: false,
			MimeType:          "",
			PairMap:           nil,
			Jwt:               "",
		}
		uploadResult, err, data := uploader.Upload(bytes.NewReader([]byte(textContent)), uploadOption)
		if len(data) != len(textContent) {
			t.Errorf("data actual %d expected %d", len(data), len(textContent))
		}
		if err != nil {
			fmt.Printf("err: %v\n", err)
		}
		fmt.Printf("uploadResult: %+v\n", uploadResult)
	}

	{
		mockClient.needleHandling = func(n *needle.Needle, originalSize int, err error) {
			assert.Equal(t, nil, err, "upload: %v", err)
			assert.Equal(t, "text/plain", string(n.Mime), "mime detection failed: %v", string(n.Mime))
			assert.Equal(t, true, n.IsCompressed(), "this should be compressed")
			assert.Equal(t, true, util.IsGzippedContent(n.Data), "this should be gzip")
			fmt.Printf("needle: %v, dataSize:%d originalSize:%d\n", n, len(n.Data), originalSize)
		}
		gzippedData, _ := util.GzipData([]byte(textContent))
		uploadOption := &UploadOption{
			UploadUrl:         "http://localhost:8080/389,0f084d17353afda0",
			Filename:          "t.txt",
			Cipher:            false,
			IsInputCompressed: true,
			MimeType:          "text/plain",
			PairMap:           nil,
			Jwt:               "",
		}
		uploader.Upload(bytes.NewReader(gzippedData), uploadOption)
	}

	/*
		{
			mc.needleHandling = func(n *needle.Needle, originalSize int, err error) {
				assert.Equal(t, nil, err, "upload: %v", err)
				assert.Equal(t, "text/plain", string(n.Mime), "mime detection failed: %v", string(n.Mime))
				assert.Equal(t, true, n.IsCompressed(), "this should be compressed")
				assert.Equal(t, true, util.IsZstdContent(n.Data), "this should be zstd")
				fmt.Printf("needle: %v, dataSize:%d originalSize:%d\n", n, len(n.Data), originalSize)
			}
			zstdData, _ := util.ZstdData([]byte(textContent))
			Upload("http://localhost:8080/389,0f084d17353afda0", "t.txt", false, bytes.NewReader(zstdData), true, "text/plain", nil, "")
		}

		{
			mc.needleHandling = func(n *needle.Needle, originalSize int, err error) {
				assert.Equal(t, nil, err, "upload: %v", err)
				assert.Equal(t, "application/zstd", string(n.Mime), "mime detection failed: %v", string(n.Mime))
				assert.Equal(t, false, n.IsCompressed(), "this should not be compressed")
				assert.Equal(t, true, util.IsZstdContent(n.Data), "this should still be zstd")
				fmt.Printf("needle: %v, dataSize:%d originalSize:%d\n", n, len(n.Data), originalSize)
			}
			zstdData, _ := util.ZstdData([]byte(textContent))
			Upload("http://localhost:8080/389,0f084d17353afda0", "t.txt", false, bytes.NewReader(zstdData), false, "application/zstd", nil, "")
		}
	*/

}

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