Ilia Denisov
bfa8797f8c
Engine: multi-player drop-out-and-continue with a per-game tile disposition (remove default / return), resigned seats skipped and excluded from the win, leaver rack never revealed; 2-player behaviour unchanged. New domains (service/store, no HTTP yet): internal/social (friend request/accept graph, per-user blocks, per-game chat with nudge as a message kind, content filter via mvdan.cc/xurls/v2 + leet/separator normaliser + phone heuristic) and internal/lobby (in-memory variant-keyed matchmaking pool, friend-game invitations invite->accept with lazy 7-day expiry). account gains profile editing and the email confirm-code flow (Mailer seam: SMTP or log mailer). Migration 00003_social.sql + regenerated jet. main wires the new services into the server (accessors for the Stage 6 handlers); robot substitution stays in Stage 5, REST/stream/push in Stage 6/8. Docs (PLAN, ARCHITECTURE, FUNCTIONAL+ru, TESTING, README) updated.
85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
package account
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import (
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"context"
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"fmt"
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"net"
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"net/smtp"
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"go.uber.org/zap"
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)
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// Mailer delivers a transactional email. It is the seam behind which the email
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// confirm-code flow sends codes, so the relay is swappable and unit tests use a
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// fixture (see docs/TESTING.md: no real network in tests). The context is offered
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// for cancellation; the standard-library SMTP implementation sends synchronously
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// and ignores it.
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type Mailer interface {
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Send(ctx context.Context, to, subject, body string) error
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}
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// SMTPConfig configures the SMTP relay. An empty Host selects the LogMailer
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// instead, so a deployment without a relay still runs (the code lands in the log).
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type SMTPConfig struct {
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Host string
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Port string
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Username string
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Password string
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From string
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}
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// SMTPMailer sends mail through an SMTP relay using the standard library. When a
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// username is set it authenticates with PLAIN; otherwise it relays unauthenticated.
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type SMTPMailer struct {
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cfg SMTPConfig
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}
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// NewSMTPMailer constructs an SMTPMailer for cfg.
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func NewSMTPMailer(cfg SMTPConfig) SMTPMailer {
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return SMTPMailer{cfg: cfg}
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}
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// Send delivers a plain-text UTF-8 message to to via the configured relay.
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func (m SMTPMailer) Send(_ context.Context, to, subject, body string) error {
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addr := net.JoinHostPort(m.cfg.Host, m.cfg.Port)
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var auth smtp.Auth
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if m.cfg.Username != "" {
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auth = smtp.PlainAuth("", m.cfg.Username, m.cfg.Password, m.cfg.Host)
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}
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if err := smtp.SendMail(addr, auth, m.cfg.From, []string{to}, message(m.cfg.From, to, subject, body)); err != nil {
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return fmt.Errorf("account: send mail to %s: %w", to, err)
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}
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return nil
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}
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// message renders a minimal RFC 5322 plain-text email.
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func message(from, to, subject, body string) []byte {
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return []byte("From: " + from + "\r\n" +
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"To: " + to + "\r\n" +
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"Subject: " + subject + "\r\n" +
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"MIME-Version: 1.0\r\n" +
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"Content-Type: text/plain; charset=UTF-8\r\n" +
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"\r\n" + body + "\r\n")
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}
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// LogMailer logs the message instead of sending it. It is the default when no
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// SMTP relay is configured and is intended for development only: it logs the body,
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// which carries the confirm-code, so it must not be used in production.
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type LogMailer struct {
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log *zap.Logger
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}
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// NewLogMailer constructs a LogMailer that logs through log.
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func NewLogMailer(log *zap.Logger) LogMailer {
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return LogMailer{log: log}
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}
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// Send logs the message at info level and reports success.
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func (m LogMailer) Send(_ context.Context, to, subject, body string) error {
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if m.log != nil {
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m.log.Info("email not sent (log mailer)",
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zap.String("to", to), zap.String("subject", subject), zap.String("body", body))
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}
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return nil
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}
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