1 files changed, 65 insertions, 0 deletions
diff --git a/internal/log.go b/internal/log.go
new file mode 100644
index 0000000..52c0f3d
--- /dev/null
+++ b/internal/log.go
@@ -0,0 +1,65 @@
+package internal
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path"
+)
+
+type FileLogger struct {
+	Level LogLevel
+	File  *os.File
+}
+
+type LogLevel int8
+
+const (
+	LOG_NOTSET LogLevel = iota
+	LOG_INFO
+	LOG_WARNING
+	LOG_ERROR
+)
+
+func (e LogLevel) String() string {
+	switch e {
+	case LOG_NOTSET:
+		return "NOTSET"
+	case LOG_INFO:
+		return "INFO"
+	case LOG_WARNING:
+		return "WARNING"
+	case LOG_ERROR:
+		return "ERROR"
+	default:
+		return "UNKNOWN"
+	}
+}
+
+func (logger *FileLogger) Init(level LogLevel, name string, directory string) error {
+	configDirErr := EnsureDirectory(directory)
+	if configDirErr != nil {
+		return configDirErr
+	}
+	logFile, logOpenErr := os.OpenFile(logger.getFilename(directory, name), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0o666)
+	if logOpenErr != nil {
+		return logOpenErr
+	}
+	log.SetOutput(logFile)
+	return nil
+}
+
+func (logger *FileLogger) getFilename(directory string, name string) string {
+	pathString := path.Join(directory, name)
+	return fmt.Sprintf("%s.log", pathString)
+}
+
+func (logger *FileLogger) Log(level LogLevel, str string) {
+	if level >= logger.Level && logger.Level != LOG_NOTSET {
+		log.Printf("[%s]: %s", level.String(), str)
+	}
+}
+
+func (logger *FileLogger) Close() {
+	logger.File.Close()
+}