Initial commit

internal/moon/chatlog.go

@@ -0,0 +1,49 @@
+package moon
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strconv"
+	"time"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+// ChatLog logs message to separate file, placed in basedir(Cfg.LogFile).
+func ChatLog(chatid int64, message string) {
+	var (
+		filename string
+	)
+
+	if Cfg.LogFile != "" {
+		filename = fmt.Sprintf("%s/%s", filepath.Dir(Cfg.LogFile), strconv.FormatInt(chatid, 10))
+	} else {
+		filename = os.DevNull
+	}
+
+	f, err := os.OpenFile(filename, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0644)
+
+	if err != nil {
+		fmt.Printf("Unable to open file %s for logging: %s", filename, err)
+
+		// TODO: Should we try harder?
+		return
+	}
+
+	defer f.Close()
+
+	log.Logger = log.Output(
+		zerolog.ConsoleWriter{
+			Out:        f,
+			NoColor:    true,
+			TimeFormat: time.DateTime,
+			PartsOrder: []string{"time", "message"},
+		},
+	)
+
+	log.Info().Msg(message)
+}
+
+/* vim: set ft=go noet ai ts=4 sw=4 sts=4: */