tui simulation

internal/tui/logger.go

@@ -0,0 +1,89 @@
+package tui
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+// LogEntry represents a single log entry with timestamp and level
+type LogEntry struct {
+	Time    time.Time
+	Level   string // INFO, CONN, TX, RX, ERR
+	Message string
+}
+
+// LogBuffer is a thread-safe circular buffer for log entries
+type LogBuffer struct {
+	mu      sync.RWMutex
+	entries []LogEntry
+	maxSize int
+}
+
+// NewLogBuffer creates a new LogBuffer with the given max size
+func NewLogBuffer(maxSize int) *LogBuffer {
+	return &LogBuffer{
+		entries: make([]LogEntry, 0, maxSize),
+		maxSize: maxSize,
+	}
+}
+
+// Log adds a new log entry
+func (l *LogBuffer) Log(level, message string) {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+
+	entry := LogEntry{
+		Time:    time.Now(),
+		Level:   level,
+		Message: message,
+	}
+	l.entries = append(l.entries, entry)
+	if len(l.entries) > l.maxSize {
+		l.entries = l.entries[1:]
+	}
+	// No p.Send() - TUI refreshes via tick
+}
+
+// Info logs an INFO level message
+func (l *LogBuffer) Info(format string, args ...any) {
+	l.Log("INFO", fmt.Sprintf(format, args...))
+}
+
+// Conn logs a CONN level message
+func (l *LogBuffer) Conn(format string, args ...any) {
+	l.Log("CONN", fmt.Sprintf(format, args...))
+}
+
+// TX logs a TX level message
+func (l *LogBuffer) TX(format string, args ...any) {
+	l.Log("TX", fmt.Sprintf(format, args...))
+}
+
+// RX logs an RX level message
+func (l *LogBuffer) RX(format string, args ...any) {
+	l.Log("RX", fmt.Sprintf(format, args...))
+}
+
+// Err logs an ERR level message
+func (l *LogBuffer) Err(format string, args ...any) {
+	l.Log("ERR", fmt.Sprintf(format, args...))
+}
+
+// Entries returns a copy of all log entries
+func (l *LogBuffer) Entries() []LogEntry {
+	l.mu.RLock()
+	defer l.mu.RUnlock()
+
+	result := make([]LogEntry, len(l.entries))
+	copy(result, l.entries)
+	return result
+}
+
+// Len returns the number of entries
+func (l *LogBuffer) Len() int {
+	l.mu.RLock()
+	defer l.mu.RUnlock()
+	return len(l.entries)
+}
+