// Copyright 2015 The Hugo Authors. All rights reserved.
//
// 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 commands

import (
	"fmt"
	"net/http"
	"os"
	"runtime"
	"testing"
	"time"

	"github.com/gohugoio/hugo/helpers"

	"github.com/spf13/viper"
	"github.com/stretchr/testify/require"
)

func TestServer(t *testing.T) {
	if isWindowsCI() {
		// TODO(bep) not sure why server tests have started to fail on the Windows CI server.
		t.Skip("Skip server test on appveyor")
	}
	assert := require.New(t)
	dir, err := createSimpleTestSite(t)
	assert.NoError(err)

	// Let us hope that this port is available on all systems ...
	port := 1331

	defer func() {
		os.RemoveAll(dir)
	}()

	stop := make(chan bool)

	b := newCommandsBuilder()
	scmd := b.newServerCmdSignaled(stop)

	cmd := scmd.getCommand()
	cmd.SetArgs([]string{"-s=" + dir, fmt.Sprintf("-p=%d", port)})

	go func() {
		_, err = cmd.ExecuteC()
		assert.NoError(err)
	}()

	// There is no way to know exactly when the server is ready for connections.
	// We could improve by something like https://golang.org/pkg/net/http/httptest/#Server
	// But for now, let us sleep and pray!
	time.Sleep(2 * time.Second)

	resp, err := http.Get("http://localhost:1331/")
	assert.NoError(err)
	defer resp.Body.Close()
	homeContent := helpers.ReaderToString(resp.Body)

	assert.Contains(homeContent, "List: Hugo Commands")

	// Stop the server.
	stop <- true

}

func TestFixURL(t *testing.T) {
	type data struct {
		TestName   string
		CLIBaseURL string
		CfgBaseURL string
		AppendPort bool
		Port       int
		Result     string
	}
	tests := []data{
		{"Basic http localhost", "", "http://foo.com", true, 1313, "http://localhost:1313/"},
		{"Basic https production, http localhost", "", "https://foo.com", true, 1313, "http://localhost:1313/"},
		{"Basic subdir", "", "http://foo.com/bar", true, 1313, "http://localhost:1313/bar/"},
		{"Basic production", "http://foo.com", "http://foo.com", false, 80, "http://foo.com/"},
		{"Production subdir", "http://foo.com/bar", "http://foo.com/bar", false, 80, "http://foo.com/bar/"},
		{"No http", "", "foo.com", true, 1313, "//localhost:1313/"},
		{"Override configured port", "", "foo.com:2020", true, 1313, "//localhost:1313/"},
		{"No http production", "foo.com", "foo.com", false, 80, "//foo.com/"},
		{"No http production with port", "foo.com", "foo.com", true, 2020, "//foo.com:2020/"},
		{"No config", "", "", true, 1313, "//localhost:1313/"},
	}

	for i, test := range tests {
		b := newCommandsBuilder()
		s := b.newServerCmd()
		v := viper.New()
		baseURL := test.CLIBaseURL
		v.Set("baseURL", test.CfgBaseURL)
		s.serverAppend = test.AppendPort
		s.serverPort = test.Port
		result, err := s.fixURL(v, baseURL, s.serverPort)
		if err != nil {
			t.Errorf("Test #%d %s: unexpected error %s", i, test.TestName, err)
		}
		if result != test.Result {
			t.Errorf("Test #%d %s: expected %q, got %q", i, test.TestName, test.Result, result)
		}
	}
}

func isWindowsCI() bool {
	return runtime.GOOS == "windows" && os.Getenv("CI") != ""
}
