500e8e317c
API can now be started without properly configured SMTP (it complains when it is used) Send() function can now use alternative dialers (mostly used for testing) Added mailhog service (make mailhog.up) to ease mail testing Add default .env example that points to localhost:1025 (mailhog) setup Proper unit testing
79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
package mail
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import (
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"regexp"
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"github.com/pkg/errors"
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gomail "gopkg.in/mail.v2"
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"github.com/crusttech/crust/internal/config"
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)
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type (
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Dialer interface {
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DialAndSend(...*gomail.Message) error
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}
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)
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const (
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addressCheckRE = "^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$"
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)
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var (
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addressCheck *regexp.Regexp
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defaultDialer Dialer
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defaultFrom string
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defaultDialerError error
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)
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func init() {
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addressCheck = regexp.MustCompile(addressCheckRE)
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}
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func SetupDialer(config *config.SMTP) {
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defaultDialerError = config.RuntimeValidation()
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if defaultDialerError != nil {
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return
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}
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defaultFrom = config.From
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defaultDialer = gomail.NewDialer(
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config.Host,
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config.Port,
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config.User,
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config.Pass,
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)
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}
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func New() *gomail.Message {
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message := gomail.NewMessage()
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message.SetHeader("From", defaultFrom)
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return message
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}
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// Sends message with SMTP dialer
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func Send(message *gomail.Message, dd ...Dialer) (err error) {
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for _, d := range append(dd, defaultDialer) {
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if d == nil {
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continue
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}
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return errors.WithStack(d.DialAndSend(message))
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}
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// At this point, none of the dialer could be used,
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// is there an error with default dialer?
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if defaultDialerError != nil {
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return errors.Wrap(defaultDialerError, "could not send email")
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}
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return errors.New("unable to find configured and working SMTP dialer")
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}
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func IsValidAddress(addr string) bool {
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return addressCheck.MatchString(addr)
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}
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