"""AX state tests for massCode — menu check marks, <select> values, custom checkboxes, focus."""
import json
import os
import re
import subprocess
import time

import pytest
import rb_testgen_kit as kit

RESULTS_DIR = os.environ.get("RESULTS_DIR", os.path.dirname(os.path.abspath(__file__)))


def screenshot_assert(test_name, description, results_dir=None):
    results_dir = results_dir or RESULTS_DIR
    ss_dir = os.path.join(results_dir, "screenshots")
    os.makedirs(ss_dir, exist_ok=True)
    ss_path = os.path.join(ss_dir, f"{test_name}.png")
    try:
        subprocess.run(["screencapture", "-x", ss_path], timeout=5)
    except Exception:
        pass
    assertions_file = os.path.join(ss_dir, "assertions.json")
    assertions = {}
    if os.path.exists(assertions_file):
        try:
            with open(assertions_file) as f:
                assertions = json.load(f)
        except Exception:
            assertions = {}
    assertions[f"{test_name}.png"] = description
    with open(assertions_file, "w") as f:
        json.dump(assertions, f, indent=2)


def _enable_web_ax(ax, timeout=10.0):
    """Chromium/Electron builds its web-content AX tree only once an AT announces itself."""
    from ApplicationServices import AXUIElementSetAttributeValue
    try:
        AXUIElementSetAttributeValue(ax._app_ref, "AXEnhancedUserInterface", True)
    except Exception:
        pass
    deadline = time.time() + timeout
    while time.time() < deadline:
        if ax.find(role="label", max_results=1, max_depth=16):
            return True
        time.sleep(0.25)
    return False


def app_ready(ax):
    """MANDATORY bring-up: build the web AX tree and foreground the app."""
    _enable_web_ax(ax)
    try:
        from AppKit import NSRunningApplication
        a = NSRunningApplication.runningApplicationWithProcessIdentifier_(int(ax.get_pid()))
        if a is not None:
            a.activateWithOptions_(1 << 1)
    except Exception:
        pass
    time.sleep(0.4)
    return ax


def labels(ax):
    return [l.value for l in ax.find(role="label", max_results=250, max_depth=26) if l.value]


def field(ax, placeholder):
    for t in ax.find(role="text_field", max_results=15, max_depth=26):
        if (t.name or "") == placeholder:
            return t
    return None


def fields(ax):
    return ax.find(role="text_field", max_results=12, max_depth=26)


def popups(ax):
    return ax.find(role="popup", max_results=12, max_depth=26)


def named_button(ax, name):
    for b in ax.find(role="button", max_results=40, max_depth=26):
        if (b.name or "").strip() == name.strip():
            return b
    return None


def press_labelled_group(ax, text):
    for g in ax.find(role="group", max_results=600, max_depth=26):
        if "AXPress" not in (g.actions or []):
            continue
        labs = ax.find(role="label", root_id=g.id, max_results=3, max_depth=2)
        if any((l.value or "").strip() == text for l in labs):
            return ax.action(g.id, "AXPress")
    return False


def webarea(ax):
    w = ax.find(role="webarea", max_results=1, max_depth=6)
    return w[0] if w else None


def menu_el(ax, path):
    items = ax.find(role="menu_bar_item", name=path[0], max_results=3, max_depth=3)
    if not items:
        return None
    cur = items[0]
    for lbl in path[1:]:
        kids = ax.find(role="menu_item", name=lbl, root_id=cur.id, max_results=3, max_depth=3)
        if not kids:
            return None
        cur = kids[0]
    return cur


def mark_of(ax, path):
    """'✓' when a checkbox/radio menu item is checked, else None."""
    el = menu_el(ax, path)
    if el is None:
        return None
    return ax.get(el.id, ["AXMenuItemMarkChar"]).get("AXMenuItemMarkChar")


def rb_enter_menu(ax, path, settle=1.2):
    """NAVIGATION: fire a menu item, crossing into whatever surface it opens."""
    el = menu_el(ax, path)
    if el is None:
        return False
    ok = ax.action(el.id, "AXPress")
    time.sleep(settle)
    return ok


def rb_enter_close_surface(ax, settle=1.3):
    """NAVIGATION: leave Preferences / Developer Tools / Presentation."""
    wa = webarea(ax)
    if wa is None:
        return False
    btns = ax.find(role="button", root_id=wa.id, max_results=5, max_depth=24)
    if not btns:
        return False
    ok = ax.action(btns[0].id, "AXPress")
    time.sleep(settle)
    return ok


def rb_enter_preferences_pane(ax, pane, settle=1.2):
    """NAVIGATION: open Preferences (if needed) and select one of
    Storage / Editor / Markdown / Appearance / Language in its left rail."""
    if "Preferences" not in labels(ax):
        rb_enter_menu(ax, ["massCode", "Settings…"], settle=1.6)
    ok = press_labelled_group(ax, pane)
    time.sleep(settle)
    return ok


def rb_enter_devtool(ax, tool_name, settle=1.3):
    """NAVIGATION: open Developer Tools (if needed) and select a tool in its left rail."""
    if "Developer Tools" not in labels(ax):
        rb_enter_menu(ax, ["massCode", "Developer Tools…"], settle=1.6)
    ok = press_labelled_group(ax, tool_name)
    time.sleep(settle)
    return ok


def rb_enter_new_snippet(ax):
    """NAVIGATION: create + select a fresh snippet (the editor surface)."""
    return rb_enter_menu(ax, ["File", "New Snippet"], settle=1.6)


def popup_options(ax, popup_value):
    """AXPress the popup with this value; return (opened_ok, [all option labels])."""
    tgt = None
    for p in popups(ax):
        if (p.value or "") == popup_value:
            tgt = p
            break
    if tgt is None:
        return False, []
    ax.action(tgt.id, "AXPress")
    time.sleep(0.9)
    best = []
    for p in popups(ax):
        opts = [o.value for o in ax.find(role="menu_item", root_id=p.id,
                                         max_results=300, max_depth=4)]
        if len(opts) > len(best):
            best = opts
    return True, best


def select_option(ax, popup_value, option_label, settle=1.0):
    """AXPress a <select> popup then AXPress one of the options it exposes."""
    tgt = None
    for p in popups(ax):
        if (p.value or "") == popup_value:
            tgt = p
            break
    if tgt is None:
        return False
    ax.action(tgt.id, "AXPress")
    time.sleep(0.9)
    for p in popups(ax):
        for o in ax.find(role="menu_item", root_id=p.id, max_results=300, max_depth=4):
            if (o.value or "") == option_label:
                ok = ax.action(o.id, "AXPress")
                time.sleep(settle)
                return ok
    esc()
    return False


def popup_value_now(ax, candidates):
    """Current value of whichever popup currently holds one of `candidates`."""
    for p in popups(ax):
        if (p.value or "") in candidates:
            return p.value
    return None


def checkbox_children(ax, label_text):
    """massCode renders checkboxes as a div whose tick <svg> only exists when CHECKED:
    the form-item group holding exactly this one label has 3 direct group children when
    CHECKED and 2 when UNCHECKED. Returns that count (or None)."""
    for g in ax.find(role="group", max_results=600, max_depth=26):
        labs = ax.find(role="label", root_id=g.id, max_results=4, max_depth=3)
        if len(labs) == 1 and (labs[0].value or "").strip() == label_text:
            return len(ax.find(role="group", root_id=g.id, max_results=6, max_depth=1))
    return None


def click_label(ax, label_text):
    """Toggle a custom checkbox by CG-clicking its visible label."""
    for l in ax.find(role="label", max_results=300, max_depth=26):
        if (l.value or "").strip() == label_text:
            return ax.click_element_cg(l.id)
    return False


def esc():
    subprocess.run(["osascript", "-e",
                    'tell application "System Events" to key code 53'],
                   capture_output=True, timeout=5)
    time.sleep(0.4)


def go_home(ax):
    for _ in range(3):
        ls = labels(ax)
        if "Preferences" in ls or "Developer Tools" in ls or "1 / 0" in ls:
            if rb_enter_close_surface(ax):
                continue
        break
    if "Inbox" not in labels(ax):
        press_labelled_group(ax, "LIBRARY")
        time.sleep(0.8)
    return ax


# ── local additions ─────────────────────────────────────────────────────────
CHECK = "✓"                      # AXMenuItemMarkChar for a checked item
SORT_OPTS = ("Date Modified", "Date Created", "Name")


def _mk(mark):
    """Normalise AXMenuItemMarkChar: an UNCHECKED item reports None (some toolkits
    report ''), a CHECKED item reports its mark character. Keeps the CHECKED/UNCHECKED
    distinction while tolerating the empty-string spelling of 'no mark'."""
    return mark if mark else None


def sort_marks(ax):
    """(Date Modified, Date Created, Name) mark chars — the radio group's state."""
    return tuple(_mk(mark_of(ax, ["View", "Sort Snippets By", o])) for o in SORT_OPTS)


def is_enabled(ax, el):
    return bool(ax.get(el.id, ["AXEnabled"]).get("AXEnabled"))


# ── menu CHECKED / radio state ──────────────────────────────────────────────
class TestMenuCheckState:
    """Native menu-item CHECKED state (AXMenuItemMarkChar). massCode persists these in
    electron-store, so every test reads the mark BEFORE, flips it, and restores it."""

    @pytest.mark.rb(depth=0, jump_kind="transition",
                    expect="View ▸ Compact Mode AXMenuItemMarkChar flips None <-> '✓' "
                           "and is restored to its entry value")
    def test_compact_mode_check_state_flips_and_restores(self, ax):
        app_ready(ax)
        path = ["View", "Compact Mode"]
        assert menu_el(ax, path) is not None, "View ▸ Compact Mode menu item missing"

        before = _mk(mark_of(ax, path))
        assert rb_enter_menu(ax, path), "could not press View ▸ Compact Mode"
        after = _mk(mark_of(ax, path))
        # restore BEFORE asserting — the setting persists across app relaunches
        rb_enter_menu(ax, path)
        restored = _mk(mark_of(ax, path))

        assert kit.rb_flip(before, after,
                           expect="Compact Mode ✓ toggles"), \
            f"Compact Mode mark did not change: {before!r} -> {after!r}"
        assert {before, after} == {None, CHECK}, \
            f"expected the mark to move between None and '✓', got {before!r}/{after!r}"
        assert restored == before, \
            f"Compact Mode not restored: {restored!r} != {before!r}"

    @pytest.mark.rb(depth=0, jump_kind="transition",
                    expect="View ▸ Hide Subfolder Snippets AXMenuItemMarkChar flips "
                           "None <-> '✓' and is restored to its entry value")
    def test_hide_subfolder_snippets_check_state_flips_and_restores(self, ax):
        app_ready(ax)
        path = ["View", "Hide Subfolder Snippets"]
        assert menu_el(ax, path) is not None, "View ▸ Hide Subfolder Snippets missing"

        before = _mk(mark_of(ax, path))
        assert rb_enter_menu(ax, path), "could not press View ▸ Hide Subfolder Snippets"
        after = _mk(mark_of(ax, path))
        rb_enter_menu(ax, path)
        restored = _mk(mark_of(ax, path))

        assert kit.rb_flip(before, after,
                           expect="Hide Subfolder Snippets ✓ toggles"), \
            f"Hide Subfolder Snippets mark did not change: {before!r} -> {after!r}"
        assert {before, after} == {None, CHECK}, \
            f"expected the mark to move between None and '✓', got {before!r}/{after!r}"
        assert restored == before, \
            f"Hide Subfolder Snippets not restored: {restored!r} != {before!r}"

    @pytest.mark.rb(depth=1, jump_kind="transition",
                    expect="View ▸ Sort Snippets By submenu: exactly one of "
                           "Date Modified / Date Created / Name is ✓, and the ✓ MOVES "
                           "to whichever item is pressed (radio exclusivity)")
    def test_sort_radio_exclusive_and_moves(self, ax):
        app_ready(ax)
        for opt in SORT_OPTS:
            assert menu_el(ax, ["View", "Sort Snippets By", opt]) is not None, \
                f"Sort Snippets By ▸ {opt} missing"

        original = sort_marks(ax)
        assert rb_enter_menu(ax, ["View", "Sort Snippets By", "Name"]), \
            "could not press Sort Snippets By ▸ Name"
        m1 = sort_marks(ax)
        assert rb_enter_menu(ax, ["View", "Sort Snippets By", "Date Created"]), \
            "could not press Sort Snippets By ▸ Date Created"
        m2 = sort_marks(ax)

        # restore the originally-checked option (this setting persists)
        orig_idx = [i for i, m in enumerate(original) if m == CHECK]
        if orig_idx:
            rb_enter_menu(ax, ["View", "Sort Snippets By", SORT_OPTS[orig_idx[0]]])
        restored = sort_marks(ax)

        assert original.count(CHECK) == 1, \
            f"exactly one sort option must be ✓ on entry, got {original!r}"
        assert m1 == (None, None, CHECK), \
            f"after pressing Name expected (None, None, '✓'), got {m1!r}"
        assert m2 == (None, CHECK, None), \
            f"after pressing Date Created expected (None, '✓', None), got {m2!r}"
        assert kit.rb_flip(m1, m2,
                           expect="sort radio ✓ moves from Name to Date Created"), \
            f"sort radio mark did not move: {m1!r} -> {m2!r}"
        assert restored == original, \
            f"sort radio not restored: {restored!r} != {original!r}"


# ── HTML <select> popup state ───────────────────────────────────────────────
class TestSelectPopupState:
    """<select> popups expose only the SELECTED option while collapsed and ALL options
    once AXPressed — so the option list itself is a reachable surface."""

    @pytest.mark.rb(depth=2, jump_kind="reach",
                    expect="both Wrap options (Word Wrap, Off) exposed when the select "
                           "expands")
    def test_wrap_select_expands_to_all_options(self, ax):
        app_ready(ax)
        assert rb_enter_preferences_pane(ax, "Editor"), \
            "could not reach Preferences ▸ Editor"
        cur = popup_value_now(ax, {"Word Wrap", "Off"})
        assert cur in ("Word Wrap", "Off"), \
            f"Wrap select not found; popup values = {[p.value for p in popups(ax)]}"
        target = "Off" if cur == "Word Wrap" else "Word Wrap"

        before = kit.rb_showing(ax, max_depth=20)
        opened, opts = popup_options(ax, cur)
        after = kit.rb_showing(ax, max_depth=20)
        esc()

        assert opened, "the Wrap select did not respond to AXPress"
        assert kit.rb_reach(before, after, target=target), \
            f"expanding the Wrap select did not expose {target!r} (options seen: {opts!r})"
        assert set(opts) == {"Word Wrap", "Off"}, \
            f"expected Wrap options {{'Word Wrap', 'Off'}}, got {sorted(set(opts))!r}"
        rb_enter_close_surface(ax)

    @pytest.mark.rb(depth=1, jump_kind="transition",
                    expect="Preferences ▸ Editor Wrap select value flips Word Wrap <-> Off "
                           "and is restored")
    def test_wrap_select_value_changes_and_restores(self, ax):
        app_ready(ax)
        assert rb_enter_preferences_pane(ax, "Editor"), \
            "could not reach Preferences ▸ Editor"
        cur = popup_value_now(ax, {"Word Wrap", "Off"})
        assert cur in ("Word Wrap", "Off"), \
            f"Wrap select not found; popup values = {[p.value for p in popups(ax)]}"
        other = "Off" if cur == "Word Wrap" else "Word Wrap"

        changed = select_option(ax, cur, other)
        now = popup_value_now(ax, {"Word Wrap", "Off"})
        # restore first — a Preferences popup change is written to electron-store
        if now == other:
            select_option(ax, other, cur)
        back = popup_value_now(ax, {"Word Wrap", "Off"})

        assert changed, f"could not select the {other!r} option of the Wrap select"
        assert kit.rb_flip(cur, now, expect="Wrap select value changes"), \
            f"Wrap select value did not change: {cur!r} -> {now!r}"
        assert now == other, f"expected Wrap == {other!r}, got {now!r}"
        assert back == cur, f"Wrap not restored: {back!r} != {cur!r}"
        rb_enter_close_surface(ax)

    @pytest.mark.rb(depth=2, jump_kind="value",
                    expect="Trailing Comma options None / All / ES5")
    def test_trailing_comma_select_options(self, ax):
        app_ready(ax)
        assert rb_enter_preferences_pane(ax, "Editor"), \
            "could not reach Preferences ▸ Editor"
        cur = popup_value_now(ax, {"None", "All", "ES5"})
        assert cur in ("None", "All", "ES5"), \
            f"Trailing Comma select not found; popups = {[p.value for p in popups(ax)]}"

        opened, opts = popup_options(ax, cur)
        esc()

        assert opened, "the Trailing Comma select did not respond to AXPress"
        assert kit.rb_value(sorted(opts), sorted(["None", "All", "ES5"])), \
            f"expected Trailing Comma options ['All', 'ES5', 'None'], got {sorted(opts)!r}"
        rb_enter_close_surface(ax)

    @pytest.mark.rb(depth=2, jump_kind="value",
                    expect="8 hash algorithms MD5…SHA512")
    def test_hash_algorithm_select_options(self, ax):
        app_ready(ax)
        assert rb_enter_devtool(ax, "Hash Generator"), \
            "could not reach Developer Tools ▸ Hash Generator"
        ps = popups(ax)
        assert ps, "Hash Generator exposes no Algorithm select"
        cur = ps[0].value

        opened, opts = popup_options(ax, cur)
        esc()

        screenshot_assert(
            "states_hash_algorithms",
            "massCode Developer Tools page. The left rail lists Text Tools "
            "(Case Converter, Slug Generator, Sort Lines, URL Parser), "
            "Cryptography / Security (Hash Generator, HMAC Generator, Password "
            "Generator, UUID Generator) and Encoders / Decoders, with Hash Generator "
            "highlighted as the active row. The Hash Generator pane on the right shows "
            "an Input String box, an Algorithm dropdown whose selected value is one of "
            "the eight algorithms MD5 / RIPEMD160 / SHA1 / SHA224 / SHA256 / SHA3 / "
            "SHA384 / SHA512 (MD5 by default), and a Result field below it.",
            RESULTS_DIR)

        assert opened, "the Algorithm select did not respond to AXPress"
        expected = ["MD5", "RIPEMD160", "SHA1", "SHA224",
                    "SHA256", "SHA3", "SHA384", "SHA512"]
        assert kit.rb_value(sorted(opts), sorted(expected)), \
            f"expected the 8 hash algorithms {sorted(expected)!r}, got {sorted(opts)!r}"
        rb_enter_close_surface(ax)


# ── custom (display:none input) checkbox state ──────────────────────────────
class TestCustomCheckboxState:
    """massCode's checkboxes hide the real <input>, so CHECKED is observed structurally:
    the form-item group has 3 direct group children when ticked and 2 when not."""

    @pytest.mark.rb(depth=1, jump_kind="transition",
                    expect="Password Generator 'Symbols' checkbox: tick node appears / "
                           "disappears (2 <-> 3 child groups) and is restored")
    def test_password_symbols_checkbox_toggles(self, ax):
        app_ready(ax)
        assert rb_enter_devtool(ax, "Password Generator"), \
            "could not reach Developer Tools ▸ Password Generator"

        before = checkbox_children(ax, "Symbols")
        assert before in (2, 3), \
            f"Symbols checkbox not found / unexpected shape (children={before!r})"
        clicked = click_label(ax, "Symbols")
        time.sleep(1.2)
        after = checkbox_children(ax, "Symbols")

        screenshot_assert(
            "states_password_options",
            "massCode Developer Tools page with Password Generator selected (highlighted) "
            "in the Cryptography / Security group of the left rail. The pane shows a "
            "Length text field (default 10) with a 'Max: 2048' hint beside it, an Options "
            "row of four custom checkboxes labelled Numbers, Symbols, Lowercase and "
            "Uppercase (Numbers, Lowercase and Uppercase are ticked by default), a "
            "Generate button and a Result field. The Symbols checkbox has just been "
            "clicked, so its tick mark is inverted relative to the other three.",
            RESULTS_DIR)

        # restore
        click_label(ax, "Symbols")
        time.sleep(1.2)
        restored = checkbox_children(ax, "Symbols")

        assert clicked, "could not click the Symbols checkbox label"
        assert kit.rb_flip(before, after,
                           expect="Symbols checkbox tick appears/disappears"), \
            f"Symbols checkbox state did not change: {before!r} -> {after!r}"
        assert {before, after} == {2, 3}, \
            f"expected the child-group count to move between 2 and 3, got {before!r}/{after!r}"
        assert restored == before, \
            f"Symbols checkbox not restored: {restored!r} != {before!r}"



# ── focus + enabled state ───────────────────────────────────────────────────
class TestFocusAndEnabledState:

    @pytest.mark.rb(depth=0, jump_kind="transition",
                    expect="File ▸ Find moves AXFocused onto the 'Search...' text field "
                           "(False -> True)")
    def test_find_menu_focuses_search_field(self, ax):
        app_ready(ax)
        go_home(ax)
        # park focus elsewhere first so the flip is genuine
        press_labelled_group(ax, "Inbox")
        time.sleep(0.6)

        s = field(ax, "Search...")
        assert s is not None, f"no 'Search...' text field on home; labels={labels(ax)[:20]}"
        before = bool(ax.get(s.id, ["AXFocused"]).get("AXFocused"))

        assert rb_enter_menu(ax, ["File", "Find"], settle=1.2), \
            "could not press File ▸ Find"

        s = field(ax, "Search...")
        assert s is not None, "'Search...' text field vanished after File ▸ Find"
        after = bool(ax.get(s.id, ["AXFocused"]).get("AXFocused"))

        assert after is True, "File ▸ Find did not focus the 'Search...' field"
        assert kit.rb_flip(before, after,
                           expect="search field becomes focused"), \
            f"AXFocused did not change: {before!r} -> {after!r}"

    @pytest.mark.rb(depth=1, jump_kind="none",
                    expect="every core control (snippet name / Add Tag / Search... fields, "
                           "language popup, File ▸ New Snippet, Editor ▸ Copy Snippet to "
                           "Clipboard, View ▸ Compact Mode) reports AXEnabled == True and "
                           "the search field's AXValue is settable")
    def test_core_controls_report_enabled(self, ax):
        app_ready(ax)
        go_home(ax)
        assert rb_enter_new_snippet(ax), "could not create a snippet via File ▸ New Snippet"

        controls = {}
        for placeholder in ("Type snippet name", "Add Tag", "Search..."):
            el = field(ax, placeholder)
            assert el is not None, \
                f"text field {placeholder!r} not found; labels={labels(ax)[:20]}"
            controls[f"text_field {placeholder!r}"] = el

        ps = popups(ax)
        assert ps, "no language <select> popup in the snippet editor column"
        controls["language popup"] = ps[0]

        for path in (["File", "New Snippet"],
                     ["Editor", "Copy Snippet to Clipboard"],
                     ["View", "Compact Mode"]):
            el = menu_el(ax, path)
            assert el is not None, f"menu item {' ▸ '.join(path)} not found"
            controls["menu " + " ▸ ".join(path)] = el

        disabled = [k for k, el in controls.items() if not is_enabled(ax, el)]
        assert disabled == [], f"controls reporting AXEnabled != True: {disabled}"

        search = field(ax, "Search...")
        assert search is not None, "'Search...' text field disappeared"
        assert ax.is_attribute_settable(search.id, "AXValue") is True, \
            "'Search...' AXValue is not settable"