From c883470c2ef977b8675b12428591bb003694e235 Mon Sep 17 00:00:00 2001
From: René 'Necoro' Neumann <necoro@necoro.eu>
Date: Thu, 23 Apr 2020 20:48:17 +0200
Subject: Restructure imap pkg

---
 internal/imap/url.go | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 internal/imap/url.go

(limited to 'internal/imap/url.go')

diff --git a/internal/imap/url.go b/internal/imap/url.go
new file mode 100644
index 0000000..6ffea72
--- /dev/null
+++ b/internal/imap/url.go
@@ -0,0 +1,76 @@
+package imap
+
+import (
+	"net"
+	"net/url"
+
+	"github.com/Necoro/feed2imap-go/internal/log"
+)
+
+// Our own convenience wrapper
+type URL struct {
+	*url.URL
+	// url.URL has no port field and splits it everytime from Host
+	port *string
+}
+
+const (
+	imapsPort   = "993"
+	imapPort    = "143"
+	imapsSchema = "imaps"
+	imapSchema  = "imap"
+)
+
+func (url *URL) Port() string {
+	if url.port == nil {
+		port := url.URL.Port()
+		url.port = &port
+	}
+	return *url.port
+}
+
+func (url *URL) ForceTLS() bool {
+	return url.Scheme == imapsSchema || url.Port() == imapsPort
+}
+
+func (url *URL) setDefaultScheme() {
+	switch url.Scheme {
+	case imapSchema, imapsSchema:
+		return
+	default:
+		oldScheme := url.Scheme
+		if url.Port() == imapsPort {
+			url.Scheme = imapsSchema
+		} else {
+			url.Scheme = imapSchema
+		}
+
+		if oldScheme != "" {
+			log.Warnf("Unknown scheme '%s', defaulting to '%s'", oldScheme, url.Scheme)
+		}
+	}
+}
+
+func (url *URL) setDefaultPort() {
+	if url.Port() == "" {
+		var port string
+		if url.Scheme == imapsSchema {
+			port = imapsPort
+		} else {
+			port = imapPort
+		}
+		url.port = &port
+		url.Host = net.JoinHostPort(url.Host, port)
+	}
+}
+
+func (url *URL) sanitizeUrl() {
+	url.setDefaultScheme()
+	url.setDefaultPort()
+}
+
+func NewUrl(url *url.URL) *URL {
+	u := URL{URL: url}
+	u.sanitizeUrl()
+	return &u
+}
\ No newline at end of file
-- 
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