feat(auth): #154 send verification mails

utils/env.go

@@ -14,6 +14,7 @@ var (
 	SmtpFromMail string
 	SmtpFromName string
 	BaseUrl      string
+	Environment  string
 )
 
 func MustInitEnv() {
@@ -24,6 +25,7 @@ func MustInitEnv() {
 	SmtpFromMail = os.Getenv("SMTP_FROM_MAIL")
 	SmtpFromName = os.Getenv("SMTP_FROM_NAME")
 	BaseUrl = os.Getenv("BASE_URL")
+	Environment = os.Getenv("ENVIRONMENT")
 
 	if SmtpHost == "" {
 		log.Fatal("SMTP_HOST must be set")
@@ -46,12 +48,10 @@ func MustInitEnv() {
 	if BaseUrl == "" {
 		log.Fatal("BASE_URL must be set")
 	}
+	if Environment == "" {
+		log.Fatal("ENVIRONMENT must be set")
+	}
 
 	slog.Info("BASE_URL is " + BaseUrl)
-	slog.Info("SMTP_HOST is " + SmtpHost)
-	slog.Info("SMTP_PORT is " + SmtpPort)
-	slog.Info("SMTP_USER is " + SmtpUser)
-	slog.Info("SMTP_PASS is " + SmtpPass)
-	slog.Info("SMTP_FROM_MAIL is " + SmtpFromMail)
-	slog.Info("SMTP_FROM_NAME is " + SmtpFromName)
+	slog.Info("ENVIRONMENT is " + Environment)
 }

utils/http.go

@@ -0,0 +1,72 @@
+package utils
+
+import (
+	"database/sql"
+	"log/slog"
+	"me-fit/types"
+	"net/http"
+	"time"
+)
+
+type ContextKey string
+
+const (
+	ContextKeyUser ContextKey = "user_id"
+)
+
+func DoRedirect(w http.ResponseWriter, r *http.Request, url string) {
+	isHtmx := r.Header.Get("HX-Request") == "true"
+	if isHtmx {
+		w.Header().Add("HX-Redirect", url)
+	} else {
+		http.Redirect(w, r, url, http.StatusSeeOther)
+	}
+}
+
+func GetUser(r *http.Request) *types.User {
+	user := r.Context().Value(ContextKeyUser)
+	if user != nil {
+		return user.(*types.User)
+	} else {
+		return nil
+	}
+}
+
+func GetUserFromSession(db *sql.DB, r *http.Request) *types.User {
+	sessionId := getSessionID(r)
+	if sessionId == "" {
+		return nil
+	}
+
+	var user types.User
+	var createdAt time.Time
+
+	user.SessionId = sessionId
+
+	err := db.QueryRow(`
+			SELECT u.user_uuid, u.email, u.email_verified, s.created_at
+			FROM session s
+			INNER JOIN user u ON s.user_uuid = u.user_uuid
+			WHERE session_id = ?`, sessionId).Scan(&user.Id, &user.Email, &user.EmailVerified, &createdAt)
+	if err != nil {
+		slog.Warn("Could not verify session: " + err.Error())
+		return nil
+	}
+
+	if createdAt.Add(time.Duration(8 * time.Hour)).Before(time.Now()) {
+		user.SessionValid = false
+	} else {
+		user.SessionValid = true
+	}
+
+	return &user
+}
+
+func getSessionID(r *http.Request) string {
+	for _, c := range r.Cookies() {
+		if c.Name == "id" {
+			return c.Value
+		}
+	}
+	return ""
+}

utils/mail.go

@@ -1,19 +1,15 @@
 package utils
 
 import (
-	"log/slog"
+	"fmt"
 	"net/smtp"
 )
 
-func SendWelcomeMail(to string) {
+func SendMail(to string, subject string, message string) error {
 
 	auth := smtp.PlainAuth("", SmtpUser, SmtpPass, SmtpHost)
 
-	msg := "From: " + SmtpFromName + " <" + SmtpFromMail + ">\nTo: " + to + "\nSubject: Welcome to me-fit\n\nWelcome to me-fit!"
-
-	err := smtp.SendMail(SmtpHost+":"+SmtpPort, auth, SmtpFromMail, []string{to}, []byte(msg))
-	if err != nil {
-		slog.Error("Could not send mail: " + err.Error())
-	}
+	msg := fmt.Sprintf("From: %v <%v>\nTo: %v\nSubject: %v\nMIME-version: 1.0;\nContent-Type: text/html; charset=\"UTF-8\";\n\n%v", SmtpFromName, SmtpFromMail, to, subject, message)
 
+	return smtp.SendMail(SmtpHost+":"+SmtpPort, auth, SmtpFromMail, []string{to}, []byte(msg))
 }