package color

import (
	"strings"
	"testing"
)

func TestWrapANSIDisabled(t *testing.T) {
	s := "this is a very long line that would normally be wrapped if enabled"
	if got := WrapANSI(s, 0); got != s {
		t.Errorf("WrapANSI(_, 0) = %q, want unchanged", got)
	}
}

func TestWrapANSIShortLineUntouched(t *testing.T) {
	s := "    indented menu item"
	if got := WrapANSI(s, 80); got != s {
		t.Errorf("short line was modified: got %q, want %q", got, s)
	}
}

func TestWrapANSIWrapsLongLine(t *testing.T) {
	s := "alpha bravo charlie delta echo foxtrot golf hotel india juliet"
	got := WrapANSI(s, 20)
	lines := strings.Split(got, "\r\n")
	if len(lines) < 2 {
		t.Fatalf("expected multiple lines, got %d: %q", len(lines), got)
	}
	for _, l := range lines {
		if VisibleLen(l) > 20 {
			t.Errorf("line exceeds width: %q (%d)", l, VisibleLen(l))
		}
	}
	if strings.Join(strings.Fields(got), " ") != s {
		t.Errorf("words not preserved: %q", got)
	}
}

func TestWrapANSIIgnoresColorCodes(t *testing.T) {
	colored := FgCode("xterm256", 182) + "hello world" + Reset
	if VisibleLen(colored) > 80 {
		t.Fatalf("test setup wrong, visible len = %d", VisibleLen(colored))
	}
	if got := WrapANSI(colored, 80); got != colored {
		t.Errorf("colored line within width was wrapped: %q", got)
	}
}

func TestWrapANSISplitsOnNewlines(t *testing.T) {
	got := WrapANSI("first line\nsecond line", 80)
	want := "first line\r\nsecond line"
	if got != want {
		t.Errorf("WrapANSI newline handling = %q, want %q", got, want)
	}
}