package app

import (
	"strings"
	"testing"

	"glint/internal/help"

	tea "github.com/charmbracelet/bubbletea"
)

// ctrlSlash is what the terminal sends for Ctrl+/ (the unit separator, 0x1f).
var ctrlSlash = tea.KeyMsg{Type: tea.KeyCtrlUnderscore}

func TestHelpToggleOpensAndCloses(t *testing.T) {
	a := statusApp()
	a.Update(ctrlSlash)
	if a.mode != ModeHelp {
		t.Fatalf("Ctrl+/ did not open help: mode = %v", a.mode)
	}
	a.Update(ctrlSlash)
	if a.mode != ModeEditor {
		t.Fatalf("second Ctrl+/ did not close help: mode = %v", a.mode)
	}
}

func TestHelpEscCloses(t *testing.T) {
	a := statusApp()
	a.Update(ctrlSlash)
	a.Update(tea.KeyMsg{Type: tea.KeyEsc})
	if a.mode != ModeEditor {
		t.Fatalf("Esc did not close help: mode = %v", a.mode)
	}
}

func TestHelpViewShowsHelpContent(t *testing.T) {
	a := statusApp()
	a.Update(tea.WindowSizeMsg{Width: 120, Height: 40})
	a.Update(ctrlSlash)
	got := a.View()
	if !strings.Contains(got, "USAGE") {
		t.Fatalf("help view missing content from help.Text:\n%s", got)
	}
}

func TestHelpUsesSharedSource(t *testing.T) {
	if !strings.Contains(help.Text, "EDITOR KEYS") || !strings.Contains(help.Text, "Ctrl+S") {
		t.Fatalf("help.Text is not the full reference:\n%s", help.Text)
	}
}

func TestStatusBarShowsToggleKey(t *testing.T) {
	a := statusApp()
	if got := a.statusBar(); !strings.Contains(got, "ctrl+/") {
		t.Fatalf("status bar missing help toggle key:\n%s", got)
	}
}