From 3ff3fa59eb5249be9a98136ee7435c81096ff8e1 Mon Sep 17 00:00:00 2001
From: Ian Gulliver <ian@flamingcow.tv>
Date: Sun, 30 Oct 2022 20:31:51 +0000
Subject: [PATCH] IMAP client wrapper

---
 go.mod        | 10 +++++++
 go.sum        | 10 +++++++
 imap2asana.go | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 go.mod
 create mode 100644 go.sum
 create mode 100644 imap2asana.go

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..ca6ddb9
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,10 @@
+module github.com/firestuff/imap2asana
+
+go 1.18
+
+require github.com/emersion/go-imap v1.2.1
+
+require (
+	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 // indirect
+	golang.org/x/text v0.3.7 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..827662c
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,10 @@
+github.com/emersion/go-imap v1.2.1 h1:+s9ZjMEjOB8NzZMVTM3cCenz2JrQIGGo5j1df19WjTA=
+github.com/emersion/go-imap v1.2.1/go.mod h1:Qlx1FSx2FTxjnjWpIlVNEuX+ylerZQNFE5NsmKFSejY=
+github.com/emersion/go-message v0.15.0/go.mod h1:wQUEfE+38+7EW8p8aZ96ptg6bAb1iwdgej19uXASlE4=
+github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 h1:OJyUGMJTzHTd1XQp98QTaHernxMYzRaOasRir9hUlFQ=
+github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
+github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594/go.mod h1:aqO8z8wPrjkscevZJFVE1wXJrLpC5LtJG7fqLOsPb2U=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
diff --git a/imap2asana.go b/imap2asana.go
new file mode 100644
index 0000000..e820c2c
--- /dev/null
+++ b/imap2asana.go
@@ -0,0 +1,76 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/emersion/go-imap"
+	"github.com/emersion/go-imap/client"
+)
+
+func main() {
+	ic, err := NewImapClient(
+		os.Getenv("IMAP_HOST"),
+		os.Getenv("IMAP_USERNAME"),
+		os.Getenv("IMAP_PASSWORD"),
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	defer ic.Close()
+
+	mboxs, err := ic.List("", "*")
+	if err != nil {
+		panic(err)
+	}
+
+	for _, mbox := range mboxs {
+		fmt.Printf("%#v\n", mbox)
+	}
+}
+
+// go-imap's API is a pile of stupid; wrap it
+type ImapClient struct {
+	cli *client.Client
+}
+
+func NewImapClient(host, user, pass string) (*ImapClient, error) {
+	c, err := client.DialTLS(host, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.Login(user, pass)
+	if err != nil {
+		c.Logout()
+		return nil, err
+	}
+
+	return &ImapClient{
+		cli: c,
+	}, nil
+}
+
+func (ic *ImapClient) Close() {
+	ic.cli.Logout()
+}
+
+func (ic *ImapClient) List(ref, name string) ([]*imap.MailboxInfo, error) {
+	ch := make(chan *imap.MailboxInfo, 10)
+	var err error
+	go func() {
+		err = ic.cli.List(ref, name, ch)
+	}()
+
+	ret := []*imap.MailboxInfo{}
+	for mbox := range ch {
+		ret = append(ret, mbox)
+	}
+
+	if err != nil {
+		return nil, err
+	} else {
+		return ret, nil
+	}
+}