email

type Backend struct {
	TrustedDomains  []string
	OnEmailReceived func(email *Email)
	OnEmailFailed   func(from EmailUser, to []EmailUser, raw io.Reader, err error)
}

type Email struct {
	// Unique ID for the email
	ID string `json:"ID,omitempty"`

	// Timestamp when the email was received
	ReceivedAt time.Time `json:"ReceivedAt,omitempty"`

	// Client ip address
	ClientIP net.IP

	// From is the email address of the sender.
	From EmailUser

	// Recipients is a list of email addresses of the recipients like To, Cc and Bcc.
	RcptTo []EmailUser

	// To is a list of email addresses of the recipients like To, Cc
	Recipients []EmailUser

	// Subject is the subject of the email.
	Subject string

	// Headers is a map of additional headers to include in the email.
	Headers *MimeHeaders

	// Raw is the raw email data. filename: email.eml
	Raw io.Reader

	// Body is the body of the email.
	Body io.Reader // Raw body data, can be plain text or HTML.

	BodyText *EmailContent
	BodyHTML *EmailContent

	// Attachments is a list of file paths to attach to the email.
	Attachments []*EmailContent

	// Verification checks
	SPF   bool // SPF check result
	DKIM  bool // DKIM check result
	DMARC bool // DMARC check result
}

type EmailContent struct {
	R       io.Reader          `json:"R,omitempty"`       // R is the reader for the part's content.
	Headers EmailContentHeader `json:"Headers,omitempty"` // Headers are the headers associated with the part.
	Size    int64              `json:"Size,omitempty"`    // Size is the size of the content in bytes.
}

type EmailContentHeader struct {
	MimeVersion             string            `json:"MIME-Version,omitempty"`              // MIME-Version
	ContentType             HeaderContentType `json:"Content-Type,omitempty"`              // Content-Type
	ContentTransferEncoding string            `json:"Content-Transfer-Encoding,omitempty"` // Content-Transfer-Encoding
	Extra                   Headers           `json:"Extra,omitempty"`                     // Extra headers
}

type EmailUser struct {
	Name  string `json:"Name,omitempty"`  // Name is the display name of the user.
	Email string `json:"Email,omitempty"` // Email is the email address of the user.
}

type HeaderContentType struct {
	MediaType string  `json:"Media-Type,omitempty"` // MediaType is the main type of the content, e.g., "text"
	SubType   string  `json:"Sub-Type,omitempty"`   // SubType is the subtype of the content, e.g., "plain"
	Params    Headers `json:"Params,omitempty"`     // Params are additional parameters, e.g., charset, boundary
}

type Headers map[string]string

type MimeHeaders struct {
	MimeVersion string `json:"MIME-Version,omitempty"` // MIME-Version
	Date        string `json:"Date,omitempty"`         // Date
	Subject     string `json:"Subject,omitempty"`      // Subject

	From EmailUser   `json:"From,omitempty"` // From
	To   []EmailUser `json:"To,omitempty"`   // To
	Cc   []EmailUser `json:"Cc,omitempty"`   // Cc

	ContentType             HeaderContentType `json:"Content-Type,omitempty"`              // Content-Type
	ContentTransferEncoding string            `json:"Content-Transfer-Encoding,omitempty"` // Content-Transfer-Encoding

	Extra Headers `json:"Extra,omitempty"` // Extra headers
}

type SPFRecord struct {
	Domain string
	// contains filtered or unexported fields
}

type Session struct {
	State *smtp.Conn

	TrustedDomains []string

	From   EmailUser
	RcptTo []EmailUser

	Email *Email // Current email being processed

	OnEmailReceived func(email *Email)
	OnEmailFailed   func(from EmailUser, to []EmailUser, raw io.Reader, err error)
}