owpengram-server/internal/domain/welcome_message.go

42 lines
1.9 KiB
Go

package domain
import (
"fmt"
"math"
"strings"
)
const officialWelcomeMessageTemplate = "👋 Welcome to OwpenGram!\n\nYou just signed in via %s.\n\nIf this wasn't you, revoke this session from \"Settings > Privacy and Security > Active sessions\" immediately.\n\nIf you haven't already, feel free to join @zio for all the latest updates!"
// OfficialWelcomeMessage builds the account-visible incoming message sent
// from the official system account on every completed sign-in (SignUp and
// every subsequent SignIn/SignInWithEmail), regardless of delivery channel.
// Unlike OfficialLoginCodeMessage this never embeds a secret, so it is safe
// to send unconditionally — it exists to give the account owner (and, on a
// self-hosted single-admin server, that's usually also "the admin") a
// visible record of every session start.
func OfficialWelcomeMessage(userID int64, method string, date int) (Message, error) {
method = strings.TrimSpace(method)
if userID <= 0 || IsSystemUserID(userID) || method == "" || date < 0 || date > math.MaxInt32 {
return Message{}, fmt.Errorf("%w: user=%d method=%q date=%d", ErrLoginCodeDeliveryInvalid, userID, method, date)
}
return Message{
OwnerUserID: userID,
Peer: Peer{Type: PeerTypeUser, ID: OfficialSystemUserID},
From: Peer{Type: PeerTypeUser, ID: OfficialSystemUserID},
Date: date,
Body: fmt.Sprintf(officialWelcomeMessageTemplate, method),
}, nil
}
// SignInMethodLabel returns the human-readable method name embedded in
// OfficialWelcomeMessage. Email-signup accounts are identified by
// SignupEmail (see NewEmailSignupDisplayPhone) rather than by their stored
// Phone, which — once assigned — is an ordinary-looking short number that
// carries no information about the signup method.
func SignInMethodLabel(u User) string {
if u.SignupEmail != "" {
return "email"
}
return "phone number"
}