"""Tests for TUI DIALOGS (show_confirm, show_cert_form).

Uses the same mock-curses approach as test_widgets.py — no real terminal needed.
"""
from unittest.mock import MagicMock, patch
import curses as _curses

# Stub curses constants before importing the module under test, mirroring
# what test_widgets.py does for InputField's dependencies.
_curses.color_pair   = lambda x: 0
_curses.A_UNDERLINE  = 0
_curses.A_BOLD       = 0
_curses.KEY_BACKSPACE = 263
_curses.KEY_LEFT     = 260
_curses.KEY_RIGHT    = 261
_curses.KEY_HOME     = 262
_curses.KEY_END      = 360
_curses.KEY_DC       = 330
_curses.KEY_BTAB     = 353
_curses.KEY_F5       = 269
_curses.KEY_ENTER    = 343

from openvpncertupdate import show_confirm, show_cert_form, CertFormResult


def _make_stdscr(rows=40, cols=120):
    """Return a minimal MagicMock that looks like a curses stdscr."""
    stdscr = MagicMock()
    stdscr.getmaxyx.return_value = (rows, cols)
    return stdscr


def _make_win(rows=20, cols=60):
    """Return a minimal MagicMock for the subwindow created by curses.newwin."""
    win = MagicMock()
    win.getmaxyx.return_value = (rows, cols)
    return win


# ---------------------------------------------------------------------------
# show_confirm tests
# ---------------------------------------------------------------------------

def test_show_confirm_yes():
    """Pressing 'y' returns True."""
    stdscr = _make_stdscr()
    win = _make_win()
    win.getch.side_effect = [ord("y")]
    with patch("curses.newwin", return_value=win):
        result = show_confirm(stdscr, "Do you want to continue?")
    assert result is True


def test_show_confirm_esc():
    """Pressing Escape (27) returns False."""
    stdscr = _make_stdscr()
    win = _make_win()
    win.getch.side_effect = [27]
    with patch("curses.newwin", return_value=win):
        result = show_confirm(stdscr, "Do you want to continue?")
    assert result is False


# ---------------------------------------------------------------------------
# show_cert_form tests
# ---------------------------------------------------------------------------

def test_show_cert_form_cancel():
    """Pressing Escape returns a CertFormResult with cancelled=True."""
    stdscr = _make_stdscr()
    win = _make_win(rows=20, cols=70)
    win.getch.side_effect = [27]
    with patch("curses.newwin", return_value=win):
        result = show_cert_form(stdscr, cn="alice", email="alice@example.com")
    assert isinstance(result, CertFormResult)
    assert result.cancelled is True


def test_show_cert_form_confirm():
    """Pressing Enter three times advances through all 3 fields and confirms.

    The form has 3 active fields (cn, email, password).  Enter on field 0
    advances to field 1; Enter on field 1 advances to field 2; Enter on
    field 2 (the last) confirms.  We therefore need 3 Enter keypresses.
    """
    stdscr = _make_stdscr()
    win = _make_win(rows=20, cols=70)
    # Three Enter keypresses to advance through each field and confirm.
    win.getch.side_effect = [10, 10, 10]
    with patch("curses.newwin", return_value=win):
        result = show_cert_form(stdscr, cn="bob", email="bob@example.com")
    assert isinstance(result, CertFormResult)
    assert result.cancelled is False
    assert result.cn == "bob"
    assert result.email == "bob@example.com"
    assert len(result.password) > 0