package formatter

import (
	"bytes"
	"strings"
	"testing"
	"time"

	"royalroadupdates/internal/royalroad"
)

func TestPrintTableTruncation(t *testing.T) {
	stories := []royalroad.Story{
		{
			Name:         "Short Name",
			DateModified: time.Now(),
		},
		{
			Name:         "This is a very long story name that should definitely be truncated if the column width is restricted",
			DateModified: time.Now(),
		},
		{
			Name:         "Unicode Story 🌟 Sparkle",
			DateModified: time.Now(),
		},
	}

	t.Run("Natural width (no terminal)", func(t *testing.T) {
		var buf bytes.Buffer
		PrintTable(&buf, stories)
		out := buf.String()

		expectedLongName := "This is a very long story name that should definitely be truncated if the column width is restricted"
		if !strings.Contains(out, expectedLongName) {
			t.Errorf("Expected output to contain full long name when not truncated, but it didn't. Output:\n%s", out)
		}
	})

	t.Run("Check relative time alignment", func(t *testing.T) {
		var buf bytes.Buffer
		PrintTable(&buf, stories)
		out := buf.String()

		lines := strings.Split(out, "\n")
		if len(lines) < 2 {
			t.Fatalf("Expected at least 2 lines of output, got %d", len(lines))
		}
		separatorLine := lines[1]
		parts := strings.Split(separatorLine, "  ")
		if len(parts) < 2 {
			t.Fatalf("Separator line does not contain expected gutter: %s", separatorLine)
		}
		updateDashes := parts[1]
		if len(updateDashes) < len("Last Update") {
			t.Errorf("Update column separator too short: %d < 11", len(updateDashes))
		}
	})
}