Initial commit, pt. 10

pkg/oauthhandler/oauth2_handler.go

@@ -6,47 +6,36 @@ import (
 	"log"
 	"net"
 	"net/http"
+	"net/url"
 	"os/exec"
 	"runtime"
 
 	"github.com/facebookincubator/go-belt/tool/logger"
 )
 
-type OAuth2Handler struct {
-	authURL      string
-	exchangeFn   func(code string) error
-	receiverAddr string
-}
-
-func NewOAuth2Handler(
-	authURL string,
-	exchangeFn func(code string) error,
-	receiverAddr string,
-) *OAuth2Handler {
-	return &OAuth2Handler{
-		authURL:      authURL,
-		exchangeFn:   exchangeFn,
-		receiverAddr: receiverAddr,
-	}
+type OAuthHandlerArgument struct {
+	AuthURL     string
+	RedirectURL string
+	ExchangeFn  func(code string) error
 }
 
 // it is guaranteed exchangeFn was called if error is nil.
-func (h *OAuth2Handler) Handle(ctx context.Context) error {
-	if h.receiverAddr != "" {
-		err := h.handleViaBrowser()
+func OAuth2Handler(ctx context.Context, arg OAuthHandlerArgument) error {
+	if arg.RedirectURL != "" {
+		err := OAuth2HandlerViaBrowser(ctx, arg)
 		if err == nil {
 			return nil
 		}
 		logger.Errorf(ctx, "unable to authenticate automatically: %v", err)
 	}
-	return h.handleViaCLI()
+	return OAuth2HandlerViaCLI(ctx, arg)
 }
 
-func (h *OAuth2Handler) handleViaCLI() error {
+func OAuth2HandlerViaCLI(ctx context.Context, arg OAuthHandlerArgument) error {
 	fmt.Printf(
 		"It is required to get an oauth2 token. "+
 			"Please open the link below in the browser:\n\n\t%s\n\n",
-		h.authURL,
+		arg.AuthURL,
 	)
 
 	fmt.Printf("Enter the code: ")
@@ -54,30 +43,35 @@ func (h *OAuth2Handler) handleViaCLI() error {
 	if _, err := fmt.Scan(&code); err != nil {
 		log.Fatalf("Unable to read authorization code %v", err)
 	}
-	return h.exchangeFn(code)
+	return arg.ExchangeFn(code)
 }
 
-func (h *OAuth2Handler) handleViaBrowser() error {
-	codeCh, err := h.newCodeReceiver()
+func OAuth2HandlerViaBrowser(ctx context.Context, arg OAuthHandlerArgument) error {
+	codeCh, err := NewCodeReceiver(arg.RedirectURL)
 	if err != nil {
 		return err
 	}
 
-	err = launchBrowser(h.authURL)
+	err = LaunchBrowser(arg.AuthURL)
 	if err != nil {
 		return err
 	}
 
-	fmt.Printf("Your browser has been launched (URL: %s).\nPlease approve the permissions.\n", h.authURL)
+	fmt.Printf("Your browser has been launched (URL: %s).\nPlease approve the permissions.\n", arg.AuthURL)
 
 	// Wait for the web server to get the code.
 	code := <-codeCh
-	return h.exchangeFn(code)
+	return arg.ExchangeFn(code)
+}
+
+func NewCodeReceiver(redirectURL string) (codeCh chan string, err error) {
+	urlParsed, err := url.Parse(redirectURL)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse URL '%s': %w", redirectURL, err)
 	}
 
-func (h *OAuth2Handler) newCodeReceiver() (codeCh chan string, err error) {
 	// this function was mostly borrowed from https://developers.google.com/youtube/v3/code_samples/go#authorize_a_request
-	listener, err := net.Listen("tcp", h.receiverAddr)
+	listener, err := net.Listen("tcp", urlParsed.Host)
 	if err != nil {
 		return nil, err
 	}
@@ -94,7 +88,7 @@ func (h *OAuth2Handler) newCodeReceiver() (codeCh chan string, err error) {
 	return codeCh, nil
 }
 
-func launchBrowser(url string) error {
+func LaunchBrowser(url string) error {
 	switch runtime.GOOS {
 	case "darwin":
 		return exec.Command("open", url).Start()

pkg/streamcontrol/config.go

@@ -200,6 +200,8 @@ func GetPlatformSpecificConfig[T any](
 	switch platCfgCfg := platCfgCfg.(type) {
 	case T:
 		return platCfgCfg
+	case *T:
+		return *platCfgCfg
 	case RawMessage:
 		var v T
 		err := yaml.Unmarshal(platCfgCfg, &v)

pkg/streamcontrol/twitch/config.go

@@ -1,11 +1,16 @@
 package twitch
 
 import (
+	"context"
+
+	"github.com/xaionaro-go/streamctl/pkg/oauthhandler"
 	streamctl "github.com/xaionaro-go/streamctl/pkg/streamcontrol"
 )
 
 const ID = streamctl.PlatformName("twitch")
 
+type OAuthHandler func(context.Context, oauthhandler.OAuthHandlerArgument) error
+
 type PlatformSpecificConfig struct {
 	Channel            string
 	ClientID           string
@@ -15,6 +20,7 @@ type PlatformSpecificConfig struct {
 	AppAccessToken     string
 	UserAccessToken    string
 	RefreshToken       string
+	CustomOAuthHandler OAuthHandler `yaml:"-"`
 }
 
 type Config = streamctl.PlatformConfig[PlatformSpecificConfig, StreamProfile]

pkg/streamcontrol/twitch/twitch.go

@@ -208,11 +208,12 @@ func getClient(
 	cfg Config,
 	safeCfgFn func(Config) error,
 ) (*helix.Client, error) {
-	client, err := helix.NewClient(&helix.Options{
+	options := &helix.Options{
 		ClientID:     cfg.Config.ClientID,
 		ClientSecret: cfg.Config.ClientSecret,
-		RedirectURI:  "http://localhost/",
-	})
+		RedirectURI:  "http://localhost:8091/",
+	}
+	client, err := helix.NewClient(options)
 	if err != nil {
 		return nil, fmt.Errorf("unable to create a helix client object: %w", err)
 	}
@@ -236,13 +237,23 @@ func getClient(
 					Scopes:       []string{"channel:manage:broadcast"},
 				})
 
-				oauthHandler := oauthhandler.NewOAuth2Handler(authURL, func(code string) error {
+				arg := oauthhandler.OAuthHandlerArgument{
+					AuthURL:     authURL,
+					RedirectURL: options.RedirectURI,
+					ExchangeFn: func(code string) error {
 						cfg.Config.ClientCode = code
 						err = safeCfgFn(cfg)
 						errmon.ObserveErrorCtx(ctx, err)
 						return nil
-				}, "")
-				err := oauthHandler.Handle(ctx)
+					},
+				}
+
+				oauthHandler := cfg.Config.CustomOAuthHandler
+				if oauthHandler == nil {
+					oauthHandler = oauthhandler.OAuth2HandlerViaCLI
+				}
+
+				err := oauthHandler(ctx, arg)
 				if err != nil {
 					return nil, fmt.Errorf("unable to get or exchange the oauth code to a token: %w", err)
 				}

pkg/streamcontrol/youtube/config.go

@@ -1,16 +1,22 @@
 package youtube
 
 import (
+	"context"
+
+	"github.com/xaionaro-go/streamctl/pkg/oauthhandler"
 	streamctl "github.com/xaionaro-go/streamctl/pkg/streamcontrol"
 	"golang.org/x/oauth2"
 )
 
 const ID = streamctl.PlatformName("youtube")
 
+type OAuthHandler func(context.Context, oauthhandler.OAuthHandlerArgument) error
+
 type PlatformSpecificConfig struct {
 	ClientID           string
 	ClientSecret       string
 	Token              *oauth2.Token
+	CustomOAuthHandler OAuthHandler `yaml:"-"`
 }
 
 type Config = streamctl.PlatformConfig[PlatformSpecificConfig, StreamProfile]

pkg/streamcontrol/youtube/youtube.go

@@ -122,18 +122,26 @@ func getAuthCfg(cfg Config) *oauth2.Config {
 
 func getToken(ctx context.Context, cfg Config) (*oauth2.Token, error) {
 	googleAuthCfg := getAuthCfg(cfg)
-	authURL := googleAuthCfg.AuthCodeURL("state-token", oauth2.AccessTypeOffline)
 
 	var tok *oauth2.Token
-	oauthHandler := oauthhandler.NewOAuth2Handler(authURL, func(code string) error {
+	oauthHandlerArg := oauthhandler.OAuthHandlerArgument{
+		AuthURL:     googleAuthCfg.AuthCodeURL("state-token", oauth2.AccessTypeOffline),
+		RedirectURL: googleAuthCfg.RedirectURL,
+		ExchangeFn: func(code string) error {
 			_tok, err := googleAuthCfg.Exchange(ctx, code)
 			if err != nil {
 				return fmt.Errorf("unable to get a token: %w", err)
 			}
 			tok = _tok
 			return nil
-	}, "")
-	err := oauthHandler.Handle(ctx)
+		},
+	}
+
+	oauthHandler := cfg.Config.CustomOAuthHandler
+	if oauthHandler == nil {
+		oauthHandler = oauthhandler.OAuth2HandlerViaCLI
+	}
+	err := oauthHandler(ctx, oauthHandlerArg)
 	if err != nil {
 		return nil, err
 	}

pkg/streampanel/panel.go

@@ -5,7 +5,9 @@ import (
 	_ "embed"
 	"fmt"
 	"os"
+	"os/exec"
 	"path"
+	"runtime"
 	"runtime/debug"
 	"sort"
 	"strings"
@@ -20,6 +22,7 @@ import (
 	"github.com/facebookincubator/go-belt/tool/experimental/errmon"
 	"github.com/facebookincubator/go-belt/tool/logger"
 	"github.com/go-ng/xmath"
+	"github.com/xaionaro-go/streamctl/pkg/oauthhandler"
 	"github.com/xaionaro-go/streamctl/pkg/streamcontrol"
 	"github.com/xaionaro-go/streamctl/pkg/streamcontrol/twitch"
 	"github.com/xaionaro-go/streamctl/pkg/streamcontrol/youtube"
@@ -35,6 +38,7 @@ type Panel struct {
 	dataLock sync.Mutex
 	data     panelData
 
+	app                fyne.App
 	config             config
 	startStopMutex     sync.Mutex
 	updateTimerHandler *updateTimerHandler
@@ -77,23 +81,24 @@ func (p *Panel) Loop(ctx context.Context) error {
 		return fmt.Errorf("unable to load the data '%s': %w", p.dataPath, err)
 	}
 
+	p.app = fyneapp.New()
+
 	if err := p.initStreamControllers(); err != nil {
 		return fmt.Errorf("unable to initialize stream controllers: %w", err)
 	}
 
-	a := fyneapp.New()
-	p.initTwitchData(a)
+	p.initTwitchData()
 	p.normalizeTwitchData()
-	p.initYoutubeData(a)
+	p.initYoutubeData()
 	p.normalizeYoutubeData()
 
-	p.initMainWindow(ctx, a)
+	p.initMainWindow(ctx)
 
 	p.mainWindow.ShowAndRun()
 	return nil
 }
 
-func (p *Panel) initTwitchData(a fyne.App) {
+func (p *Panel) initTwitchData() {
 	logger.FromCtx(p.defaultContext).Debugf("initializing Twitch data")
 	defer logger.FromCtx(p.defaultContext).Debugf("endof initializing Twitch data")
 
@@ -110,7 +115,7 @@ func (p *Panel) initTwitchData(a fyne.App) {
 
 	allCategories, err := twitch.GetAllCategories(p.defaultContext)
 	if err != nil {
-		p.displayError(a, err)
+		p.displayError(err)
 		return
 	}
 
@@ -133,7 +138,7 @@ func (p *Panel) normalizeTwitchData() {
 	})
 }
 
-func (p *Panel) initYoutubeData(a fyne.App) {
+func (p *Panel) initYoutubeData() {
 	logger.FromCtx(p.defaultContext).Debugf("initializing Youtube data")
 	defer logger.FromCtx(p.defaultContext).Debugf("endof initializing Youtube data")
 
@@ -150,7 +155,7 @@ func (p *Panel) initYoutubeData(a fyne.App) {
 
 	broadcasts, err := youtube.ListBroadcasts(p.defaultContext)
 	if err != nil {
-		p.displayError(a, err)
+		p.displayError(err)
 		return
 	}
 
@@ -223,6 +228,77 @@ func (p *Panel) savePlatformConfig(
 	return p.saveData()
 }
 
+func (p *Panel) oauthHandlerTwitch(ctx context.Context, arg oauthhandler.OAuthHandlerArgument) error {
+	logger.Infof(ctx, "oauthHandlerTwitch: %#+v", arg)
+	defer logger.Infof(ctx, "/oauthHandlerTwitch")
+	return p.oauthHandler(ctx, arg)
+}
+
+func (p *Panel) oauthHandlerYouTube(ctx context.Context, arg oauthhandler.OAuthHandlerArgument) error {
+	logger.Infof(ctx, "oauthHandlerYouTube: %#+v", arg)
+	defer logger.Infof(ctx, "/oauthHandlerYouTube")
+	return p.oauthHandler(ctx, arg)
+}
+
+func (p *Panel) oauthHandler(ctx context.Context, arg oauthhandler.OAuthHandlerArgument) error {
+	codeCh, err := oauthhandler.NewCodeReceiver(arg.RedirectURL)
+	if err != nil {
+		return err
+	}
+
+	if err := p.openBrowser(arg.AuthURL); err != nil {
+		return fmt.Errorf("unable to open browser with URL '%s': %w", arg.AuthURL, err)
+	}
+
+	logger.Infof(ctx, "Your browser has been launched (URL: %s).\nPlease approve the permissions.\n", arg.AuthURL)
+
+	// Wait for the web server to get the code.
+	code := <-codeCh
+	logger.Debugf(ctx, "received the auth code")
+	return arg.ExchangeFn(code)
+}
+
+func (p *Panel) openBrowser(authURL string) error {
+	var browserCmd string
+	switch runtime.GOOS {
+	case "darwin":
+		browserCmd = "open"
+	case "linux":
+		browserCmd = "xdg-open"
+	default:
+		return oauthhandler.LaunchBrowser(authURL)
+	}
+
+	waitCh := make(chan struct{})
+
+	w := p.app.NewWindow("Browser selection window")
+	browserField := widget.NewEntry()
+	browserField.PlaceHolder = "command to execute the browser"
+	browserField.OnSubmitted = func(s string) {
+		close(waitCh)
+	}
+	okButton := widget.NewButton("OK", func() {
+		close(waitCh)
+	})
+	w.SetContent(container.NewBorder(
+		browserField,
+		okButton,
+		nil,
+		nil,
+		nil,
+	))
+
+	go w.ShowAndRun()
+	<-waitCh
+	w.Close()
+
+	if browserField.Text != "" {
+		browserCmd = browserField.Text
+	}
+
+	return exec.Command(browserCmd, authURL).Start()
+}
+
 func (p *Panel) initStreamControllers() error {
 	for platName, cfg := range p.data.Backends {
 		var err error
@@ -230,11 +306,11 @@ func (p *Panel) initStreamControllers() error {
 		case strings.ToLower(string(twitch.ID)):
 			p.streamControllers.Twitch, err = newTwitch(p.defaultContext, cfg, func(cfg *streamcontrol.AbstractPlatformConfig) error {
 				return p.savePlatformConfig(twitch.ID, cfg)
-			})
+			}, p.oauthHandlerTwitch)
 		case strings.ToLower(string(youtube.ID)):
 			p.streamControllers.YouTube, err = newYouTube(p.defaultContext, cfg, func(cfg *streamcontrol.AbstractPlatformConfig) error {
 				return p.savePlatformConfig(youtube.ID, cfg)
-			})
+			}, p.oauthHandlerYouTube)
 		}
 		if err != nil {
 			return fmt.Errorf("unable to initialize '%s': %w", platName, err)
@@ -432,8 +508,8 @@ func (p *Panel) setFilter(filter string) {
 	p.refilterProfiles()
 }
 
-func (p *Panel) initMainWindow(ctx context.Context, a fyne.App) {
-	w := a.NewWindow("TimeTracker")
+func (p *Panel) initMainWindow(ctx context.Context) {
+	w := p.app.NewWindow("StreamPanel")
 
 	p.startStopButton = widget.NewButtonWithIcon("", theme.MediaPlayIcon(), p.onStartStopButton)
 	p.startStopButton.Importance = widget.SuccessImportance
@@ -449,7 +525,7 @@ func (p *Panel) initMainWindow(ctx context.Context, a fyne.App) {
 	topPanel := container.NewVBox(
 		container.NewHBox(
 			widget.NewButtonWithIcon("Profile", theme.ContentAddIcon(), func() {
-				p.newProfileWindow(ctx, a)
+				p.newProfileWindow(ctx)
 			}),
 		),
 		profileFilter,
@@ -512,13 +588,13 @@ func cleanYoutubeRecordingName(in string) string {
 	return strings.ToLower(strings.Trim(in, " "))
 }
 
-func (p *Panel) newProfileWindow(_ context.Context, a fyne.App) fyne.Window {
+func (p *Panel) newProfileWindow(_ context.Context) fyne.Window {
 	var (
 		twitchProfile  *twitch.StreamProfile
 		youtubeProfile *youtube.StreamProfile
 	)
 
-	w := a.NewWindow("Create a profile")
+	w := p.app.NewWindow("Create a profile")
 	w.Resize(fyne.NewSize(400, 300))
 	activityTitle := widget.NewEntry()
 	activityTitle.SetPlaceHolder("title")
@@ -682,7 +758,7 @@ func (p *Panel) newProfileWindow(_ context.Context, a fyne.App) fyne.Window {
 			}
 			err := fmt.Errorf("creating a profile is not implemented")
 			if err != nil {
-				p.displayError(a, err)
+				p.displayError(err)
 				return
 			}
 			w.Close()
@@ -704,8 +780,8 @@ func (p *Panel) newProfileWindow(_ context.Context, a fyne.App) fyne.Window {
 	return w
 }
 
-func (p *Panel) displayError(a fyne.App, err error) {
-	w := a.NewWindow("Got an error: " + err.Error())
+func (p *Panel) displayError(err error) {
+	w := p.app.NewWindow("Got an error: " + err.Error())
 	errorMessage := fmt.Sprintf("Error: %v\n\nstack trace:\n%s", err, debug.Stack())
 	w.Resize(fyne.NewSize(400, 300))
 	w.SetContent(widget.NewLabelWithStyle(errorMessage, fyne.TextAlignLeading, fyne.TextStyle{Bold: true}))

pkg/streampanel/stream_controller.go

@@ -14,6 +14,7 @@ func newTwitch(
 	ctx context.Context,
 	cfg *streamcontrol.AbstractPlatformConfig,
 	saveCfgFunc func(*streamcontrol.AbstractPlatformConfig) error,
+	customOAuthHandler twitch.OAuthHandler,
 ) (
 	*twitch.Twitch,
 	error,
@@ -26,6 +27,7 @@ func newTwitch(
 	}
 
 	logger.Debugf(ctx, "twitch config: %#+v", platCfg)
+	platCfg.Config.CustomOAuthHandler = customOAuthHandler
 	return twitch.New(ctx, *platCfg,
 		func(c twitch.Config) error {
 			return saveCfgFunc(&streamcontrol.AbstractPlatformConfig{
@@ -40,6 +42,7 @@ func newYouTube(
 	ctx context.Context,
 	cfg *streamcontrol.AbstractPlatformConfig,
 	saveCfgFunc func(*streamcontrol.AbstractPlatformConfig) error,
+	customOAuthHandler youtube.OAuthHandler,
 ) (
 	*youtube.YouTube,
 	error,
@@ -52,6 +55,7 @@ func newYouTube(
 	}
 
 	logger.Debugf(ctx, "youtube config: %#+v", platCfg)
+	platCfg.Config.CustomOAuthHandler = customOAuthHandler
 	return youtube.New(ctx, *platCfg,
 		func(c youtube.Config) error {
 			return saveCfgFunc(&streamcontrol.AbstractPlatformConfig{