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/*
 * Copyright (C) 2017-2018 "IoT.bzh"
 * Author Clément Bénier <clement.benier@iot.bzh>
 *
 * 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 xdsservertest

import (
	"log"
	"os"
	"path"
	"regexp"
	"strings"
	"testing"
	"time"

	"gerrit.automotivelinux.org/gerrit/src/xds/xds-server/lib/xsapiv1"
	"github.com/stretchr/testify/assert"
)

var cpt int

/*flush channel with timeout*/
func flushChannelSdk(channel chan xsapiv1.SDK, ms time.Duration) {
	timeoutB := false
	for !timeoutB {
		select {
		case <-channel:
		case <-time.After(ms * time.Millisecond):
			timeoutB = true
		}
	}
}

func ConnectSDKStateChange(t *testing.T, sCli *IOSockClient, channel chan xsapiv1.SDK) {

	sCli.Conn.On(xsapiv1.EVTSDKStateChange, func(e xsapiv1.EventMsg) {
		sdk, _ := e.DecodeSDKEvent()
		channel <- sdk
	})

	args := xsapiv1.EventRegisterArgs{Name: xsapiv1.EVTSDKStateChange}
	assert.Nil(t, HTTPCli.Post("/events/register", args, nil))
}

func DisconnectSDKStateChange(t *testing.T, sCli *IOSockClient) {
	args := xsapiv1.EventRegisterArgs{Name: xsapiv1.EVTSDKStateChange}
	assert.Nil(t, HTTPCli.Post("/events/unregister", args, nil))
}

func InitSdkDir() {
	/*create sdk dir*/
	sdkDir := os.Getenv(envXdtSdk)
	os.MkdirAll(sdkDir, 0755)
	currentDir, err := os.Getwd()
	if err != nil {
		log.Fatal(err)
	}
	if err := Copy(path.Join(currentDir, sdkFile), path.Join(sdkDir, sdkFileName)); err != nil {
		log.Fatal(err)
	}
}

func RemoveSdk(t *testing.T, sdk xsapiv1.SDK, chSdks chan xsapiv1.SDK) {
	Debugf(t, "remove sdk %v", sdk.ID)
	assert.Nil(t, HTTPCli.Delete("/sdks/"+sdk.ID, &sdk))
	sdkFromEvt := <-chSdks //waiting for event Uninstalling
	assert.Equal(t, sdk.ID, sdkFromEvt.ID)
	assert.Equal(t, sdkFromEvt.Status, "Un-installing")
	sdkFromEvt = <-chSdks //waiting for event not installed
	assert.Equal(t, sdkFromEvt.Status, "Not Installed")
	os.RemoveAll(path.Join(os.Getenv(envXdtSdk), sdk.Profile))
	os.Remove(strings.Replace(sdk.URL, "file://", "", 1))
}

func TestSdks(t *testing.T) {
	InitSdkDir()
	/*get sdk list from sdk_latest.json*/
	var sdkArray []xsapiv1.SDK
	assert.Nil(t, HTTPCli.Get("/sdks", &sdkArray))
	_, err := os.Stat(path.Join(os.Getenv(envXdtSdk), "sdks_latest.json"))
	assert.Nil(t, err)

	/*create channel fro SDK event*/
	chSdks := make(chan xsapiv1.SDK)
	defer close(chSdks)
	ConnectSDKStateChange(t, sCli, chSdks)

	/*checking startup installing of SDKs*/
	for i := 0; i < len(sdkArray); i++ {
		re := regexp.MustCompile("^[0-9a-z]+-[0-9a-z]+-[0-9a-z]+-[0-9a-z]+-[0-9a-z]+$")
		assert.True(t, re.MatchString(sdkArray[i].ID))
		assert.Equal(t, sdkArray[0].Status, "Not Installed")

		var sdk xsapiv1.SDK
		assert.Nil(t, HTTPCli.Get("/sdks/"+sdkArray[i].ID, &sdk))
		assert.Equal(t, sdkArray[i], sdk)

		var sdkRes xsapiv1.SDK
		/*install sdk*/
		Debugf(t, "install sdk %v", sdk.Name)
		assert.Nil(t, HTTPCli.Post("/sdks", sdk, &sdkRes))
		assert.Equal(t, sdkRes.Status, "Installing")
		sdkFromEvent := <-chSdks //waiting for installing event
		assert.Equal(t, sdkRes.ID, sdkFromEvent.ID)
		assert.Equal(t, sdkFromEvent.Status, "Installing")

		/*abort sdk install*/
		Debugf(t, "abort install sdk %v", sdk.Name)
		assert.Nil(t, HTTPCli.Post("/sdks/abortinstall", sdk, &sdkRes))
		assert.Equal(t, sdkRes.Status, "Not Installed")
		sdkFromEvent = <-chSdks //waiting for not installed status*/
		assert.Equal(t, sdkRes.ID, sdkFromEvent.ID)
		assert.Equal(t, sdkRes.Status, sdkFromEvent.Status)
	}
}

func installFakeSdk(t *testing.T, sdkInstall xsapiv1.SDKInstallArgs, chSdks chan xsapiv1.SDK) xsapiv1.SDK {
	InitSdkDir()
	var sdkRes xsapiv1.SDK
	assert.Nil(t, HTTPCli.Post("/sdks", sdkInstall, &sdkRes))
	Debugf(t, "Install fake sdk %v (force=%v)", sdkRes.Name, sdkInstall.Force)
	assert.Equal(t, sdkRes.Status, "Installing")
	sdkFromEvent := <-chSdks
	assert.Equal(t, sdkRes.ID, sdkFromEvent.ID)
	assert.Equal(t, sdkFromEvent.Status, "Installing")
	/*waiting for SDKStateChange event from channel*/
	sdkFromEvent = <-chSdks
	assert.Equal(t, sdkRes.ID, sdkFromEvent.ID)
	assert.Equal(t, "Installed", sdkFromEvent.Status)
	assert.Equal(t, sdkFromEvent.LastError, "")
	Debugf(t, "Fake sdk %v installed", sdkFromEvent.Name)
	return sdkFromEvent
}

func TestInstallFakeSdk(t *testing.T) {
	sdk := xsapiv1.SDKInstallArgs{
		ID:       "",
		Filename: sdkFileName,
		Force:    false,
	}

	chSdks := make(chan xsapiv1.SDK)
	defer close(chSdks)
	ConnectSDKStateChange(t, sCli, chSdks)
	installFakeSdk(t, sdk, chSdks)

	/*test force install*/
	sdk.Force = true
	sdkRes := installFakeSdk(t, sdk, chSdks)
	RemoveSdk(t, sdkRes, chSdks)
	DisconnectSDKStateChange(t, sCli)
}

func TestSdksError(t *testing.T) {
	sdk := xsapiv1.SDKInstallArgs{
		ID:       "",
		Filename: "",
		Force:    false,
	}
	Debugf(t, "error while installing sdk with no ID and no Filename")
	var sdkRes xsapiv1.SDK
	/*error with no ID no filename*/
	assert.NotNil(t, HTTPCli.Post("/sdks", sdk, &sdkRes))
	sdk.ID = "42885c24-374e-3ef0-9723-0c8a05191aa"
	Debugf(t, "error while installing sdk with a fake id=%v", sdk.ID)
	/*error with fake ID*/
	assert.NotNil(t, HTTPCli.Post("/sdks", sdk, &sdkRes))
	sdk.ID = ""
	sdk.Filename = "fake"
	Debugf(t, "error while installing sdk with a fake filename=%v", sdk.Filename)
	/*error with fake filename*/
	assert.NotNil(t, HTTPCli.Post("/sdks", sdk, &sdkRes))
}