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|
package main
import (
"context"
"fmt"
"log"
"net/http"
"os"
"yato/config"
"yato/lib"
"yato/screens"
tea "github.com/charmbracelet/bubbletea"
)
var (
authorizationChan = make(chan struct{})
codeVerifier string
errorChan = make(chan error)
)
func main() {
if err := config.LoadConfig(); err != nil {
log.Fatalf(err.Error())
}
config := config.GetConfig()
if config.MyAnimeList.AccessToken == "" {
go StartOAuthFlow()
select {
case <-authorizationChan: // Authorization successful
case err := <-errorChan:
log.Fatalf("Unable to authenticate: %s", err)
}
}
StartApp()
}
func StartApp() {
p := tea.NewProgram(screens.Initialize(), tea.WithAltScreen())
if _, err := p.Run(); err != nil {
fmt.Println("Error starting program:", err)
os.Exit(1)
}
}
func StartOAuthFlow() {
var err error
codeVerifier, err = lib.GetNewCodeVerifier()
if err != nil {
log.Fatalf("failed to generate code verifier: %s", err)
}
url := lib.GetOAuthURL(codeVerifier)
server := &http.Server{Addr: ":42069"}
http.HandleFunc("/authenticate", handleOAuthCallback)
go func() {
if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
log.Printf("HTTP server error: %v", err)
}
}()
if err := lib.OpenBrowser(url); err != nil {
log.Printf("failed to open browser: %v. Visit %s in your browser to authenticate.", err, url)
}
select {
case <-authorizationChan:
case err := <-errorChan:
log.Fatalf("Unable to authenticate: %s", err)
}
if err := server.Shutdown(context.Background()); err != nil {
log.Printf("failed to shutdown server: %v", err)
}
}
func handleOAuthCallback(w http.ResponseWriter, r *http.Request) {
code := r.URL.Query().Get("code")
if code == "" {
errorChan <- fmt.Errorf("user cancelled authentication")
http.Error(w, "missing code query parameter. user cancelled authentication", http.StatusBadRequest)
return
}
malConfig, err := lib.ExchangeToken(code, codeVerifier)
if err != nil {
errorChan <- fmt.Errorf("failed to exchange token: %w", err)
http.Error(w, "failed to exchange token", http.StatusInternalServerError)
return
}
config.GetConfig().MyAnimeList = *malConfig
if err := config.SaveConfig(); err != nil {
errorChan <- fmt.Errorf("failed to save config: %w", err)
http.Error(w, "failed to save config", http.StatusInternalServerError)
return
}
w.Write([]byte("Authentication successful! You can now close this tab."))
authorizationChan <- struct{}{}
}
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