/*
 *     Copyright 2020 The Dragonfly Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package dfget

import (
	"context"
	"io"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/google/uuid"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"go.uber.org/mock/gomock"

	"d7y.io/dragonfly/v2/client/config"
	"d7y.io/dragonfly/v2/pkg/digest"
	"d7y.io/dragonfly/v2/pkg/source"
	"d7y.io/dragonfly/v2/pkg/source/mocks"
)

func Test_downloadFromSource(t *testing.T) {
	homeDir, err := os.UserHomeDir()
	assert.Nil(t, err)
	output := filepath.Join(homeDir, uuid.New().String())
	defer os.Remove(output)

	content := uuid.New().String()
	sourceClient := mocks.NewMockResourceClient(gomock.NewController(t))
	require.Nil(t, source.Register("http", sourceClient, func(request *source.Request) *source.Request {
		return request
	}))
	defer source.UnRegister("http")

	cfg := &config.DfgetConfig{
		URL:    "http://a.b.c/xx",
		Output: output,
		Digest: strings.Join([]string{digest.AlgorithmSHA256, digest.SHA256FromStrings(content)}, ":"),
	}
	request, err := source.NewRequest(cfg.URL)
	assert.Nil(t, err)
	sourceClient.EXPECT().Download(request).Return(source.NewResponse(io.NopCloser(strings.NewReader(content))), nil)

	err = downloadFromSource(context.Background(), cfg, nil)
	assert.Nil(t, err)
}

func Test_parseHeader(t *testing.T) {
	tests := []struct {
		name   string
		s      []string
		expect map[string]string
	}{
		{
			name: "parse header",
			s: []string{
				"Accept: *",
				"Host: abc",
			},
			expect: map[string]string{
				"Accept": "*",
				"Host":   "abc",
			},
		},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			assert := assert.New(t)
			hdr := parseHeader(tc.s)
			assert.Equal(tc.expect, hdr)
		})
	}
}