add web auth example (#49)

examples/auth-using-api-base/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"github.com/celestix/gotgproto"
+	"github.com/celestix/gotgproto/examples/auth-using-api-base/web"
+	"github.com/celestix/gotgproto/sessionMaker"
+	"log"
+)
+
+func main() {
+
+	// start web api
+	go web.Start()
+
+	clientType := gotgproto.ClientType{
+		// put your phone here or just leave it empty
+		// if you leave it empty, you will be asked to enter your phone number
+		Phone: "",
+	}
+	client, err := gotgproto.NewClient(
+		// Get AppID from https://my.telegram.org/apps
+		123456,
+		// Get ApiHash from https://my.telegram.org/apps
+		"API_HASH_HERE",
+		// ClientType, as we defined above
+		clientType,
+		// Optional parameters of client
+		&gotgproto.ClientOpts{
+
+			// custom authenticator using web api
+			AuthConversator: web.GetWebAuth(),
+			Session:         sessionMaker.SqliteSession("webbot"),
+		},
+	)
+	if err != nil {
+		log.Fatalln("failed to start client:", err)
+	}
+	client.Idle()
+
+}

examples/auth-using-api-base/web/api.go

@@ -0,0 +1,37 @@
+package web
+
+import (
+	"fmt"
+	"net/http"
+)
+
+// Start a web server and wait
+func Start() {
+	http.HandleFunc("/", setInfo)
+	http.ListenAndServe(":9997", nil)
+}
+
+// setInfo handle user info, set phone, code or passwd
+func setInfo(w http.ResponseWriter, req *http.Request) {
+	action := req.URL.Query().Get("set")
+
+	switch action {
+
+	case "phone":
+		num := req.URL.Query().Get("phone")
+		phone := "+" + num
+		ReceivePhone(phone)
+		fmt.Fprintf(w, "phone received: %s", phone)
+
+	case "code":
+		code := req.URL.Query().Get("code")
+		ReceiveCode(code)
+		fmt.Fprintf(w, "code received: %s", code)
+
+	case "passwd":
+		passwd := req.URL.Query().Get("passwd")
+		ReceivePasswd(passwd)
+		fmt.Fprintf(w, "passwd received: %s", passwd)
+
+	}
+}

examples/auth-using-api-base/web/webauth.go

@@ -0,0 +1,55 @@
+package web
+
+import (
+	"fmt"
+	"github.com/celestix/gotgproto"
+)
+
+type webAuth struct{}
+
+var (
+	phoneChan  = make(chan string)
+	codeChan   = make(chan string)
+	passwdChan = make(chan string)
+)
+
+func GetWebAuth() gotgproto.AuthConversator {
+	return &webAuth{}
+}
+
+func (w *webAuth) AskPhoneNumber() (string, error) {
+	fmt.Println("waiting for phone...")
+	code := <-phoneChan
+	return code, nil
+}
+
+func (w *webAuth) AskCode() (string, error) {
+	fmt.Println("waiting for code...")
+	code := <-codeChan
+	return code, nil
+}
+
+func (w *webAuth) AskPassword() (string, error) {
+	fmt.Println("waiting for 2fa password...")
+	code := <-passwdChan
+	return code, nil
+}
+
+func (w *webAuth) RetryPassword(attemptsLeft int) (string, error) {
+	fmt.Println("The 2FA Code you just entered seems to be incorrect,")
+	fmt.Println("Attempts Left:", attemptsLeft)
+	fmt.Println("Please try again.... ")
+	return w.AskCode()
+}
+
+func ReceivePhone(phone string) {
+	phoneChan <- phone
+}
+
+func ReceiveCode(code string) {
+	codeChan <- code
+}
+
+func ReceivePasswd(passwd string) {
+	passwdChan <- passwd
+}