email

type Mailer interface {
	// Send a message.
	Send(dest string, subject string, text []byte, html []byte) error
}

type MarkdownBuilder struct {
	Provider MarkdownProvider
}

type MarkdownProvider interface {
	// Get the markdown template by name and language (returns *text/template.Template).
	Get(templateName, lang string) (*text.Template, error)
	// Body for html messages by language (returns *html/template.Template).
	Body(lang string) (*html.Template, error)
}

type Message struct {
	Dest     user.User   `json:"dest"`
	Subject  string      `json:"subject"`
	Template string      `json:"template"`
	Data     interface{} `json:"data"`
}

type SMTP struct {
	Host     string
	Port     int
	User     string
	Password string
	Sender   string
}

type TemplateBuilder interface {
	// GenerateText for data in language lang
	Text(template, lang string, data interface{}) ([]byte, error)
	// GenerateHTML for data in language lang
	HTML(template, lang string, data interface{}) ([]byte, error)
}