feat(log): Formatted console logging with file output

writer.go

@@ -0,0 +1,84 @@
+package masterlog
+
+import (
+	"io"
+	"os"
+)
+
+// isTerminal checks if the writer is a terminal (TTY)
+func isTerminal(w io.Writer) bool {
+	file, ok := w.(*os.File)
+	if !ok {
+		return false
+	}
+
+	// Check if it's a terminal by trying to get file info
+	stat, err := file.Stat()
+	if err != nil {
+		return false
+	}
+
+	// Check if it's a character device (terminal)
+	return (stat.Mode() & os.ModeCharDevice) != 0
+}
+
+// ConsoleWriter writes to stdout
+type ConsoleWriter struct {
+	writer     io.Writer
+	isTerminal bool
+}
+
+func NewConsoleWriter() *ConsoleWriter {
+	writer := os.Stdout
+	return &ConsoleWriter{
+		writer:     writer,
+		isTerminal: isTerminal(writer),
+	}
+}
+
+func (w *ConsoleWriter) Write(data []byte) error {
+	_, err := w.writer.Write(data)
+	return err
+}
+
+func (w *ConsoleWriter) Close() error {
+	return nil
+}
+
+func (w *ConsoleWriter) SupportsColors() bool {
+	return w.isTerminal
+}
+
+// FileWriter writes to a file
+type FileWriter struct {
+	file   *os.File
+	writer io.Writer
+}
+
+func NewFileWriter(filename string) (*FileWriter, error) {
+	file, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
+	if err != nil {
+		return nil, err
+	}
+
+	return &FileWriter{
+		file:   file,
+		writer: file,
+	}, nil
+}
+
+func (w *FileWriter) Write(data []byte) error {
+	_, err := w.writer.Write(data)
+	return err
+}
+
+func (w *FileWriter) Close() error {
+	if w.file != nil {
+		return w.file.Close()
+	}
+	return nil
+}
+
+func (w *FileWriter) SupportsColors() bool {
+	return false // File writers never support colors
+}