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aerc/models/models.go
Ben Burwell c610c3cd9d Factor IMAP-specific structs out of UI models
Before, we were using several IMAP-specific concepts to represent
information being displayed in the UI. Factor these structures out of
the IMAP package to make it easier for other backends to provide the
required information.
2019-07-08 16:06:28 -04:00

133 lines
2.7 KiB
Go

package models
import (
"bytes"
"fmt"
"io"
"regexp"
"strings"
"time"
"github.com/emersion/go-message/mail"
)
// Flag is an abstraction around the different flags which can be present in
// different email backends and represents a flag that we use in the UI.
type Flag int
const (
// SeenFlag marks a message as having been seen previously
SeenFlag Flag = iota
// RecentFlag marks a message as being recent
RecentFlag
// AnsweredFlag marks a message as having been replied to
AnsweredFlag
// DeletedFlag marks a message as having been deleted
DeletedFlag
// FlaggedFlag marks a message with a user flag
FlaggedFlag
)
type Directory struct {
Name string
Attributes []string
}
type DirectoryInfo struct {
Name string
Flags []string
ReadOnly bool
// The total number of messages in this mailbox.
Exists int
// The number of messages not seen since the last time the mailbox was opened.
Recent int
// The number of unread messages
Unseen int
}
// A MessageInfo holds information about the structure of a message
type MessageInfo struct {
BodyStructure *BodyStructure
Envelope *Envelope
Flags []Flag
InternalDate time.Time
RFC822Headers *mail.Header
Size uint32
Uid uint32
}
// A MessageBodyPart can be displayed in the message viewer
type MessageBodyPart struct {
Reader io.Reader
Uid uint32
}
// A FullMessage is the entire message
type FullMessage struct {
Reader io.Reader
Uid uint32
}
type BodyStructure struct {
MIMEType string
MIMESubType string
Params map[string]string
Description string
Encoding string
Parts []*BodyStructure
Disposition string
DispositionParams map[string]string
}
type Envelope struct {
Date time.Time
Subject string
From []*Address
ReplyTo []*Address
To []*Address
Cc []*Address
Bcc []*Address
MessageId string
}
type Address struct {
Name string
Mailbox string
Host string
}
var atom *regexp.Regexp = regexp.MustCompile("^[a-z0-9!#$%7'*+-/=?^_`{}|~ ]+$")
func (a Address) Format() string {
if a.Name != "" {
if atom.MatchString(a.Name) {
return fmt.Sprintf("%s <%s@%s>", a.Name, a.Mailbox, a.Host)
} else {
return fmt.Sprintf("\"%s\" <%s@%s>",
strings.ReplaceAll(a.Name, "\"", "'"),
a.Mailbox, a.Host)
}
} else {
return fmt.Sprintf("<%s@%s>", a.Mailbox, a.Host)
}
}
// FormatAddresses formats a list of addresses, separating each by a comma
func FormatAddresses(addrs []*Address) string {
val := bytes.Buffer{}
for i, addr := range addrs {
val.WriteString(addr.Format())
if i != len(addrs)-1 {
val.WriteString(", ")
}
}
return val.String()
}