New console package for writing to the console

1 files changed, 73 insertions, 0 deletions

diff --git a/internal/console/console.go b/internal/console/console.go
new file mode 100644
index 0000000..72f80cc
--- /dev/null
+++ b/internal/console/console.go
@@ -0,0 +1,73 @@
+package console
+
+import (
+	"fmt"
+	"io"
+	"strings"
+)
+
+func DisplayWarningMessage(message string, out io.Writer) {
+	DisplayWarningMessages([]string{message}, out)
+}
+
+func DisplayInfoMessage(message string, out io.Writer) {
+	DisplayInfoMessages([]string{message}, out)
+}
+
+func DisplayWarningMessages(messages []string, out io.Writer) {
+	DisplayMessages(messages, out, true)
+}
+
+func DisplayInfoMessages(messages []string, out io.Writer) {
+	DisplayMessages(messages, out, false)
+}
+
+func DisplayMessages(messages []string, out io.Writer, displayDivider bool) {
+	if noMessages(messages) {
+		return
+	}
+
+	displayBlankLineOrDivider(out, displayDivider)
+
+	for _, msg := range messages {
+		fmt.Fprintf(out, formatLine(msg))
+	}
+
+	displayBlankLineOrDivider(out, displayDivider)
+}
+
+func noMessages(messages []string) bool {
+	if len(messages) == 0 {
+		return true
+	}
+
+	for _, msg := range messages {
+		if len(strings.TrimSpace(msg)) > 0 {
+			return false
+		}
+	}
+
+	return true
+}
+
+func formatLine(message string) string {
+	return fmt.Sprintf("remote: %v\n", message)
+}
+
+func displayBlankLineOrDivider(out io.Writer, displayDivider bool) {
+	if displayDivider {
+		fmt.Fprintf(out, divider())
+	} else {
+		fmt.Fprintf(out, blankLine())
+	}
+}
+
+func blankLine() string {
+	return formatLine("")
+}
+
+func divider() string {
+	ruler := strings.Repeat("=", 72)
+
+	return fmt.Sprintf("%v%v%v", blankLine(), formatLine(ruler), blankLine())
+}