package main

// The frame is the one place where an off-by-one becomes a broken screen, so it
// is checked rather than eyeballed: every rendered line must be exactly the
// width asked for, at every size, with and without tabs.

import (
	"strings"
	"testing"

	"github.com/charmbracelet/lipgloss"
)

func lines(s string) []string { return strings.Split(s, "\n") }

func TestFrameEveryLineIsExactWidth(t *testing.T) {
	for w := 10; w <= 90; w++ {
		for h := 3; h <= 20; h++ {
			for _, tabs := range [][]string{nil, {"one", "two"}, {"a"}} {
				for _, focused := range []bool{false, true} {
					p := panel{title: "tasks", tabs: tabs, width: w, height: h, focused: focused}
					out := p.render([]string{"first", "second"})
					got := lines(out)
					if len(got) != h {
						t.Fatalf("width %d height %d: got %d lines, want %d", w, h, len(got), h)
					}
					for i, ln := range got {
						if lipgloss.Width(ln) != w {
							t.Fatalf("width %d height %d tab=%v focus=%v line %d: width %d (%q)",
								w, h, tabs, focused, i, lipgloss.Width(ln), ln)
						}
					}
				}
			}
		}
	}
}

func TestFrameBodyIsClippedNotWrapped(t *testing.T) {
	p := panel{title: "t", width: 20, height: 4}
	out := p.render([]string{"a line that is much too long for the frame"})
	for i, ln := range lines(out) {
		if lipgloss.Width(ln) != 20 {
			t.Fatalf("line %d is %d wide, want 20: %q", i, lipgloss.Width(ln), ln)
		}
	}
}

func TestTruncateVisibleKeepsStylingAndWidth(t *testing.T) {
	styled := lipgloss.NewStyle().Bold(true).Render("abcdefghij")
	got := truncateVisible(styled, 5)
	if lipgloss.Width(got) > 5 {
		t.Fatalf("truncated width %d, want at most 5: %q", lipgloss.Width(got), got)
	}
	if !strings.Contains(got, "…") {
		t.Fatalf("truncation should say it truncated: %q", got)
	}
}