feat: setup/register flow impl and login refactor

api/pageRegister.go

@@ -0,0 +1,76 @@
+package api
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"os"
+)
+
+type RegisterPage struct {
+	PageError *PageError `json:"error"`
+	Username  string     `json:"username"`
+	Email     string     `json:"email"`
+}
+
+var EmptyRegisterPage = &RegisterPage{
+	PageError: NewPageError(""),
+	Username:  "",
+	Email:     "",
+}
+
+func GetRegisterPageHandler(registerPage *RegisterPage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if IsLoggedIn(r) || !IsUserTableEmpty() {
+			http.Redirect(w, r, "/home", http.StatusSeeOther)
+			return
+		}
+		if r.Method == http.MethodPost {
+			PostRegisterPage(w, r)
+			return
+		}
+		bs, err := Container.GetPageUseCase.GetPage("setup1", &registerPage)
+		if err != nil {
+			_, _ = w.Write([]byte(err.Error()))
+		}
+		_, _ = w.Write(bs)
+	}
+}
+
+func PostRegisterPage(w http.ResponseWriter, r *http.Request) {
+	_ = r.ParseForm()
+
+	credentials, err := json.Marshal(&UserRegister{
+		Username: r.FormValue("username"),
+		Password: r.FormValue("password"),
+		Email:    r.FormValue("email"),
+	})
+	if err != nil {
+		r.Method = http.MethodGet
+		GetRegisterPageHandler(&RegisterPage{
+			PageError: NewPageError("Invalid register form data format."),
+			Username:  r.FormValue("username"),
+			Email:     r.FormValue("email"),
+		})(w, r)
+		return
+	}
+
+	response, err := http.Post(
+		"http://localhost:"+os.Getenv("PORT")+"/v1/auth/register",
+		"application/json",
+		bytes.NewBuffer(credentials))
+
+	if err != nil || response.StatusCode != http.StatusOK {
+		r.Method = http.MethodGet
+		GetRegisterPageHandler(&RegisterPage{
+			PageError: NewPageError("Username should be between 3 and 20 characters long, password should be between 8 and 20 characters long, and email should be a valid email address."),
+			Username:  r.FormValue("username"),
+			Email:     r.FormValue("email"),
+		})(w, r)
+		return
+	}
+
+	w.Header().Set("Set-Cookie", response.Header.Get("Set-Cookie"))
+
+	http.Redirect(w, r, "/register-confirm", http.StatusSeeOther)
+}