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package imap
import (
"fmt"
"strings"
imapClient "github.com/emersion/go-imap/client"
"github.com/Necoro/feed2imap-go/pkg/config"
"github.com/Necoro/feed2imap-go/pkg/log"
)
func newImapClient(url config.Url) (*imapClient.Client, error) {
var (
c *imapClient.Client
err error
)
if url.ForceTLS() {
if c, err = imapClient.DialTLS(url.HostPort(), nil); err != nil {
return nil, fmt.Errorf("connecting (TLS) to %s: %w", url.Host, err)
}
log.Print("Connected to ", url.HostPort(), " (TLS)")
} else {
if c, err = imapClient.Dial(url.HostPort()); err != nil {
return nil, fmt.Errorf("connecting to %s: %w", url.Host, err)
}
}
return c, nil
}
func (cl *Client) connect(url config.Url) (*connection, error) {
c, err := newImapClient(url)
if err != nil {
return nil, err
}
conn := cl.createConnection(c)
if !url.ForceTLS() {
if err = conn.startTls(); err != nil {
return nil, err
}
}
if err = c.Login(url.User, url.Password); err != nil {
return nil, fmt.Errorf("login to %s: %w", url.Host, err)
}
cl.connChannel <- conn
return conn, nil
}
func Connect(url config.Url) (*Client, error) {
var err error
client := NewClient()
client.host = url.Host
defer func() {
if err != nil {
client.Disconnect()
}
}()
client.startCommander()
var conn *connection // the main connection
if conn, err = client.connect(url); err != nil {
return nil, err
}
delim, err := conn.fetchDelimiter()
if err != nil {
return nil, fmt.Errorf("fetching delimiter: %w", err)
}
client.delimiter = delim
toplevel := url.Root
if toplevel[0] == '/' {
toplevel = toplevel[1:]
}
client.toplevel = client.folderName(strings.Split(toplevel, "/"))
log.Printf("Determined '%s' as toplevel, with '%s' as delimiter", client.toplevel, client.delimiter)
if err = conn.ensureFolder(client.toplevel); err != nil {
return nil, err
}
// the other connections
for i := 1; i < len(client.connections); i++ {
go func(id int) {
if _, err := client.connect(url); err != nil { // explicitly new var 'err', b/c these are now harmless
log.Warnf("connecting #%d: %s", id, err)
}
}(i)
}
return client, nil
}
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