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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 (
	"bytes"
	"os"
	"os/exec"
	"path"
	"testing"

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

func InitExec(t *testing.T) string {
	Debugf(t, "Create helloworld directory with app-templates")
	/*copy helloworld from fixtures to envRootCfgDir*/
	helloworldDir := path.Join(os.Getenv(envRootCfgDir), "helloworld")
	cmd := exec.Command("cp", "-r", helloworldFixturesDir, helloworldDir)
	var out bytes.Buffer
	cmd.Stdout = &out
	assert.Nil(t, cmd.Run())

	/*clone submodules app templates into helloworld*/
	subHelloworldAppTemplateDir := path.Join(helloworldDir, "conf.d", "app-templates")
	cmd = exec.Command("git", "clone", "-b", "flounder",
		"https://gerrit.automotivelinux.org/gerrit/p/apps/app-templates.git",
		subHelloworldAppTemplateDir)
	assert.Nil(t, cmd.Run())
	return helloworldDir
}

func TestExec(t *testing.T) {
	helloworldDir := InitExec(t)
	/*channel for SDK events*/
	chSdks := make(chan xsapiv1.SDK)
	defer close(chSdks)
	sdk := xsapiv1.SDKInstallArgs{
		ID:       "",
		Filename: sdkFileName,
		Force:    false,
	}
	ConnectSDKStateChange(t, sCli, chSdks)
	sdkRes := installFakeSdk(t, sdk, chSdks)

	/*check there is no project*/
	var cfgArray []xsapiv1.FolderConfig
	assert.Nil(t, HTTPCli.Get("/folders", &cfgArray))
	assert.Equal(t, len(cfgArray), 0)

	fPrj := xsapiv1.FolderConfig{
		Label:      "testproject",
		ClientPath: helloworldDir,
		Type:       xsapiv1.TypePathMap,
		ClientData: "clientdatatest",
		DataPathMap: xsapiv1.PathMapConfig{
			ServerPath: helloworldDir,
		},
	}
	/*create project*/
	var cfg xsapiv1.FolderConfig
	assert.Nil(t, HTTPCli.Post("/folders", fPrj, &cfg))
	assert.NotNil(t, cfg)

	/*channel for ExecExitMsg*/
	chExec := make(chan xsapiv1.ExecExitMsg)
	defer close(chExec)
	sCli.Conn.On(xsapiv1.ExecExitEvent, func(ev xsapiv1.ExecExitMsg) {
		chExec <- ev
	})

	/*Collect commands output in */
	cmdOut := ""
	sCli.Conn.On(xsapiv1.ExecOutEvent, func(ev xsapiv1.ExecOutMsg) {
		cmdOut += ev.Stdout + ev.Stderr
	})

	/*basic check: verify that environment is set correctly (use the right sdk)*/
	var execRes xsapiv1.ExecArgs
	cmd := "pwd && echo \"SDKTARGETSYSROOT=<$SDKTARGETSYSROOT>\""
	exec := xsapiv1.ExecArgs{
		ID:    cfg.ID,
		Cmd:   cmd,
		SdkID: sdkRes.ID,
	}
	Debugf(t, "exec cmake cmd(%v)", cmd)
	cmdOut = ""
	assert.Nil(t, HTTPCli.Post("/exec", exec, &execRes))
	exitMsg := <-chExec
	assert.Equal(t, exitMsg.Code, 0)

	/*cmake helloworld project with fake sdk*/
	cmd = "cd " + fPrj.ClientPath
	cmd = cmd + " && "
	cmd = cmd + "mkdir -p build"
	cmd = cmd + " && "
	cmd = cmd + "cd build"
	cmd = cmd + " && "
	cmd = cmd + "cmake .."

	/*post exec cmd cmake*/
	exec = xsapiv1.ExecArgs{
		ID:  cfg.ID,
		Cmd: cmd,
	}
	Debugf(t, "exec cmake cmd(%v)", cmd)
	assert.Nil(t, HTTPCli.Post("/exec", exec, &execRes))
	exitMsg = <-chExec
	assert.Equal(t, exitMsg.Code, 0)

	/*make helloworld project with fake sdk*/
	cmd = "cd " + fPrj.ClientPath
	cmd = cmd + "&&"
	cmd = cmd + "cd build"
	cmd = cmd + "&&"
	cmd = cmd + "make"
	exec.Cmd = cmd
	/*post exec cmd make*/
	Debugf(t, "exec make cmd(%v)", cmd)
	assert.Nil(t, HTTPCli.Post("/exec", exec, &execRes))
	exitMsg = <-chExec
	assert.Equal(t, exitMsg.Code, 0)

	/*check if helloworld.so exists*/
	Debug(t, "check that helloworld.so exists")
	_, err := os.Stat(path.Join(fPrj.ClientPath, "build/helloworld/helloworld.so"))
	assert.Nil(t, err)

	/*deinit*/
	assert.Nil(t, HTTPCli.Delete("/folders/"+cfg.ID, &cfg))
	RemoveSdk(t, sdkRes, chSdks)
	DisconnectSDKStateChange(t, sCli)
}