move SFTPGo package to the internal folder

SFTPGo is a daemon and command line tool, not a library.

The public API are provided by the SDK

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

internal/logger/lego.go

@@ -0,0 +1,72 @@
+// Copyright (C) 2019-2022  Nicola Murino
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package logger
+
+import "fmt"
+
+const (
+	legoLogSender = "lego"
+)
+
+// LegoAdapter is an adapter for lego.StdLogger
+type LegoAdapter struct {
+	LogToConsole bool
+}
+
+// Fatal emits a log at Error level
+func (l *LegoAdapter) Fatal(args ...any) {
+	if l.LogToConsole {
+		ErrorToConsole(fmt.Sprint(args...))
+		return
+	}
+	Log(LevelError, legoLogSender, "", fmt.Sprint(args...))
+}
+
+// Fatalln is the same as Fatal
+func (l *LegoAdapter) Fatalln(args ...any) {
+	l.Fatal(args...)
+}
+
+// Fatalf emits a log at Error level
+func (l *LegoAdapter) Fatalf(format string, args ...any) {
+	if l.LogToConsole {
+		ErrorToConsole(format, args...)
+		return
+	}
+	Log(LevelError, legoLogSender, "", format, args...)
+}
+
+// Print emits a log at Info level
+func (l *LegoAdapter) Print(args ...any) {
+	if l.LogToConsole {
+		InfoToConsole(fmt.Sprint(args...))
+		return
+	}
+	Log(LevelInfo, legoLogSender, "", fmt.Sprint(args...))
+}
+
+// Println is the same as Print
+func (l *LegoAdapter) Println(args ...any) {
+	l.Print(args...)
+}
+
+// Printf emits a log at Info level
+func (l *LegoAdapter) Printf(format string, args ...any) {
+	if l.LogToConsole {
+		InfoToConsole(format, args...)
+		return
+	}
+	Log(LevelInfo, legoLogSender, "", format, args...)
+}