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package dialog

import (
	"testing"

	"glint/internal/theme"

	"github.com/charmbracelet/bubbles/cursor"
	tea "github.com/charmbracelet/bubbletea"
)

func newModel() *Model { return New(theme.FlexokiDark()) }

func typeRunes(m *Model, s string) {
	for _, r := range s {
		m.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{r}})
	}
}

func TestOpenSetsTitleAndPrefill(t *testing.T) {
	m := newModel()
	m.Open("Rename", "~/Notes/", "my-note")
	if m.Title() != "Rename" {
		t.Errorf("Title() = %q, want Rename", m.Title())
	}
	if m.Value() != "my-note" {
		t.Errorf("Value() = %q, want my-note", m.Value())
	}
}

func TestTypingAppendsAfterPrefill(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "draft")
	typeRunes(m, "-2")
	if m.Value() != "draft-2" {
		t.Errorf("Value() = %q, want draft-2 (cursor must start at end of prefill)", m.Value())
	}
}

func TestEnterConfirms(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	typeRunes(m, "hello")
	res, _ := m.Update(tea.KeyMsg{Type: tea.KeyEnter})
	if res != ResultConfirm {
		t.Errorf("Enter gave %v, want ResultConfirm", res)
	}
	if m.Value() != "hello" {
		t.Errorf("Value() = %q, want hello", m.Value())
	}
}

func TestEscCancels(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	res, _ := m.Update(tea.KeyMsg{Type: tea.KeyEsc})
	if res != ResultCancel {
		t.Errorf("Esc gave %v, want ResultCancel", res)
	}
}

func TestOrdinaryKeysReturnNone(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	res, _ := m.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'x'}})
	if res != ResultNone {
		t.Errorf("rune key gave %v, want ResultNone", res)
	}
}

func TestValueTrimsSurroundingSpace(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	typeRunes(m, "  spaced  ")
	if m.Value() != "spaced" {
		t.Errorf("Value() = %q, want spaced", m.Value())
	}
}

func TestOpenClearsPreviousError(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	m.SetError("Name taken")
	m.Open("New note", "~/Notes/", "")
	if m.err != "" {
		t.Errorf("err = %q after reopen, want empty", m.err)
	}
}

func TestTypingClearsError(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	m.SetError("Type a name first")
	typeRunes(m, "a")
	if m.err != "" {
		t.Errorf("err = %q after typing, want empty", m.err)
	}
}

func TestErrorSurvivesNonKeyMessages(t *testing.T) {
	m := newModel()
	m.Open("New note", "~/Notes/", "")
	m.SetError("Type a name first")
	m.Update(cursor.BlinkMsg{})
	if m.err == "" {
		t.Error("err cleared by a cursor blink; only typing should clear it")
	}
}