refact round 3

content/handler.messageboard.index.go

@@ -0,0 +1,40 @@
+package content
+
+import (
+	"bbs-server/engine"
+	"fmt"
+)
+
+// MessageBoardIndexHandler displays the message board posts
+type MessageBoardIndexHandler struct {
+	board *MessageBoard
+}
+
+func NewMessageBoardIndexHandler(board *MessageBoard) *MessageBoardIndexHandler {
+	return &MessageBoardIndexHandler{board: board}
+}
+
+func (h *MessageBoardIndexHandler) Handle(s *engine.Session) {
+	s.Printer.BoxHeader(s.Lang["MsgBoardTitle"], engine.GR)
+
+	h.board.mu.Lock()
+	snap := make([]message, len(h.board.messages))
+	copy(snap, h.board.messages)
+	h.board.mu.Unlock()
+
+	if len(snap) == 0 {
+		s.Printer.Send(fmt.Sprintf("  %s%s%s\r\n", engine.GY, s.Lang["MsgNoMessages"], engine.R))
+	} else {
+		start := 0
+		if len(snap) > 30 {
+			start = len(snap) - 30
+		}
+		for i, msg := range snap[start:] {
+			s.Printer.Send(fmt.Sprintf("  %s%02d%s %s%s%s  %s%s:%s %s\r\n",
+				engine.GR, i+1, engine.R,
+				engine.GY, msg.Timestamp, engine.R,
+				engine.WH, msg.User, engine.R, msg.Text))
+		}
+	}
+	s.Printer.Pause(s.Lang)
+}