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"""AX text-content tests for massCode (Electron/Vue snippet manager)."""
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 headings(ax):
    return [h.name for h in ax.find(role="heading", max_results=30, max_depth=26) if h.name]


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 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 a pane 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 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 read-only helpers (no navigation) ──────────────────────────────────

def button_names(ax, root_id=None):
    """Trimmed AXTitle/AXDescription of every reachable button."""
    kw = {"role": "button", "max_results": 60, "max_depth": 26}
    if root_id:
        kw["root_id"] = root_id
    return [(b.name or "").strip() for b in ax.find(**kw)]


def named_button(ax, name, root_id=None):
    kw = {"role": "button", "max_results": 60, "max_depth": 26}
    if root_id:
        kw["root_id"] = root_id
    for b in ax.find(**kw):
        if (b.name or "").strip() == name:
            return b
    return None


def popup_values(ax):
    return [(p.value or "") for p in ax.find(role="popup", max_results=15, max_depth=26)]


def first_label_matching(ax_labels, pattern):
    rx = re.compile(pattern)
    for l in ax_labels:
        if rx.match((l or "").strip()):
            return (l or "").strip()
    return None


def first_label_startswith(ax_labels, prefix):
    for l in ax_labels:
        if (l or "").strip().startswith(prefix):
            return (l or "").strip()
    return None


def sheets(ax):
    return ax.find(role="sheet", max_results=5, max_depth=4)


# ── tests ────────────────────────────────────────────────────────────────────

class TestHomeText:
    """Text-bearing nodes on the home surface (window title + sidebar + search)."""

    @pytest.mark.rb(depth=0, jump_kind="none",
                    expect="window and webarea titled 'massCode'; sidebar text "
                           "LIBRARY / TAGS / Inbox / Favorites / All Snippets / Trash / FOLDERS")
    def test_window_and_sidebar_text(self, ax):
        app_ready(ax)
        go_home(ax)

        wins = ax.find(role="window", max_results=3, max_depth=1)
        assert wins, "no AXWindow exposed by the app"
        win_title = (wins[0].name or "")
        assert "massCode" in win_title, f"window AXTitle={win_title!r} (expected 'massCode')"
        assert win_title.strip() == "massCode", f"window AXTitle={win_title!r}"

        wa = webarea(ax)
        assert wa is not None, "no webarea (web content AX tree missing)"
        assert (wa.name or "").strip() == "massCode", f"webarea AXTitle={wa.name!r}"

        ls = labels(ax)
        assert ls, "no AXStaticText nodes at all — web content has no text"
        for want in ("LIBRARY", "TAGS", "Inbox", "Favorites", "All Snippets", "Trash", "FOLDERS"):
            assert want in ls, f"sidebar label {want!r} missing; labels={sorted(set(ls))[:40]}"
        # every sidebar label we matched must be non-empty readable text
        assert all((l or "").strip() for l in ls if l is not None and l != "")

        hs = headings(ax)
        assert "LIBRARY/TAGS" in hs, f"headings={hs}"
        assert "FOLDERS" in hs, f"headings={hs}"

        search = field(ax, "Search...")
        assert search is not None, "no text_field titled 'Search...'"

        screenshot_assert(
            "text_home_sidebar",
            "massCode home window. The left sidebar shows the 'LIBRARY / TAGS' switcher "
            "header, then the four system rows Inbox, Favorites, All Snippets and Trash, "
            "then a 'FOLDERS' section header with a '+' button and a 'Default' folder row. "
            "The middle column shows an empty 'Search...' box with a '+' add-snippet button; "
            "the window title reads 'massCode'.")

    @pytest.mark.rb(depth=0, jump_kind="none",
                    expect="search box placeholder 'Search...'; empty editor pane reads "
                           "'No Snippet Selected'")
    def test_search_placeholder_and_empty_editor_text(self, ax):
        app_ready(ax)
        go_home(ax)

        search = field(ax, "Search...")
        assert search is not None, "no text_field titled 'Search...'"
        assert (search.name or "") == "Search...", f"placeholder={search.name!r}"

        # Trash is empty -> selecting it clears the selection, so the editor column
        # collapses to a single explanatory label.
        assert press_labelled_group(ax, "Trash"), "could not press the sidebar 'Trash' row"
        time.sleep(1.0)
        ls = labels(ax)
        assert "No Snippet Selected" in ls, \
            f"empty-editor label missing; labels={sorted(set(ls))[:40]}"

        press_labelled_group(ax, "Inbox")
        time.sleep(0.8)


class TestPreferencesText:
    """Text living on the Preferences surface (depth 1 — reached via massCode ▸ Settings…)."""

    @pytest.mark.rb(depth=1, jump_kind="value",
                    expect="Preferences rail: Storage/Editor/Markdown/Appearance/Language")
    def test_preferences_rail_labels(self, ax):
        app_ready(ax)
        assert rb_enter_menu(ax, ["massCode", "Settings…"], settle=1.6), \
            "menu massCode ▸ Settings… did not fire"

        ls = labels(ax)
        observed = sorted(set(ls) & {"Storage", "Editor", "Markdown", "Appearance", "Language"})
        expected = sorted(["Appearance", "Editor", "Language", "Markdown", "Storage"])
        assert kit.rb_value(observed, expected), \
            f"Preferences rail text = {observed} (expected {expected}); labels={sorted(set(ls))[:40]}"
        assert "Preferences" in headings(ax), f"headings={headings(ax)}"

        rb_enter_close_surface(ax)

    @pytest.mark.rb(depth=1, jump_kind="value",
                    expect="Storage pane: '<N> snippets.' count, storage path ending "
                           "'/massCode', the massCode-v1.0 migrate sentence and 6 storage buttons")
    def test_preferences_storage_pane_text(self, ax):
        app_ready(ax)
        assert rb_enter_preferences_pane(ax, "Storage"), \
            "could not select the 'Storage' pane in the Preferences rail"

        ls = labels(ax)
        assert "Migrate" in ls, f"'Migrate' section label missing; labels={sorted(set(ls))[:40]}"
        assert "Count" in ls, f"'Count' label missing; labels={sorted(set(ls))[:40]}"

        count_text = first_label_matching(ls, r"^\d+ snippets?\.$")
        assert kit.rb_value(bool(count_text), True), \
            f"no '<N> snippets.' count label; labels={sorted(set(ls))[:40]}"

        # long sentence — AX truncates it, so prefix-match only
        migrate_text = first_label_startswith(
            ls, "To migrate from massCode v1.0 select the folder")
        assert migrate_text is not None, \
            f"massCode-v1.0 migrate sentence missing; labels={sorted(set(ls))[:40]}"

        names = button_names(ax)
        for want in ("Move Storage", "Open Storage", "New Storage", "Reload Storage",
                     "From massCode v1.0", "From SnippetsLab"):
            assert want in names, f"storage button {want!r} missing; buttons={names}"

        path = None
        for t in fields(ax):
            v = (t.value or "")
            if v.endswith("/massCode"):
                path = v
                break
        assert path, f"no storage-path text_field; values={[(t.value or '') for t in fields(ax)]}"
        assert kit.rb_value(path[-9:], "/massCode"), f"storage path = {path!r}"

        screenshot_assert(
            "text_preferences_storage",
            "massCode Preferences page, title 'Preferences'. The left rail lists "
            "Storage / Editor / Markdown / Appearance / Language with 'Storage' selected. "
            "The Storage pane shows a path field whose value ends in '/massCode', the four "
            "buttons Move Storage / Open Storage / New Storage / Reload Storage, a 'Count' "
            f"row reading '{count_text}', and a 'Migrate' section whose text begins "
            "'To migrate from massCode v1.0 select the folder containing the database files.' "
            "above the From massCode v1.0 and From SnippetsLab buttons.")

        rb_enter_close_surface(ax)

    @pytest.mark.rb(depth=1, jump_kind="value",
                    expect="all nine Editor preference labels present")
    def test_preferences_editor_pane_text(self, ax):
        app_ready(ax)
        assert rb_enter_preferences_pane(ax, "Editor"), \
            "could not select the 'Editor' pane in the Preferences rail"

        ls = set(labels(ax))
        expected = ["Font Size", "Font Family", "Wrap", "Tab Size", "Highlight Line",
                    "Match Brackets", "Trailing Comma", "Semi", "Single Quote"]
        missing = [e for e in expected if e not in ls]
        assert kit.rb_value(missing, []), \
            f"Editor pane labels missing: {missing}; labels={sorted(ls)[:40]}"

        hs = headings(ax)
        assert "Editor" in hs, f"headings={hs}"
        assert "Prettier" in hs, f"headings={hs}"

        rb_enter_close_surface(ax)


class TestDeveloperToolsText:
    """Text living on the Developer Tools surface (depth 1)."""

    @pytest.mark.rb(depth=1, jump_kind="value",
                    expect="3 group headers + 10 tool names")
    def test_devtools_rail_text(self, ax):
        app_ready(ax)
        assert rb_enter_menu(ax, ["massCode", "Developer Tools…"], settle=1.6), \
            "menu massCode ▸ Developer Tools… did not fire"

        assert "Developer Tools" in headings(ax), f"headings={headings(ax)}"

        ls = set(labels(ax))
        expected = ["Text Tools", "Cryptography / Security", "Encoders / Decoders",
                    "Case Converter", "Slug Generator", "Sort Lines", "URL Parser",
                    "Hash Generator", "HMAC Generator", "Password Generator",
                    "UUID Generator", "URL Encoder / Decoder", "Base64 Encoder / Decoder"]
        missing = [e for e in expected if e not in ls]
        assert kit.rb_value(missing, []), \
            f"Developer Tools rail text missing: {missing}; labels={sorted(ls)[:40]}"

        screenshot_assert(
            "text_devtools_rail",
            "massCode Developer Tools page, title 'Developer Tools'. The left rail is split "
            "into three labelled groups: 'Text Tools' (Case Converter, Slug Generator, "
            "Sort Lines, URL Parser), 'Cryptography / Security' (Hash Generator, "
            "HMAC Generator, Password Generator, UUID Generator) and 'Encoders / Decoders' "
            "(URL Encoder / Decoder, Base64 Encoder / Decoder).")

        rb_enter_close_surface(ax)


class TestSnippetEditorText:
    """Default text of a freshly created snippet (depth 1 — File ▸ New Snippet)."""

    @pytest.mark.rb(depth=1, jump_kind="value",
                    expect="new snippet reads 'Untitled snippet', language 'Plain Text', "
                           "cursor status 'Line 1, Column 1'")
    def test_new_snippet_default_text(self, ax):
        app_ready(ax)
        go_home(ax)
        assert rb_enter_new_snippet(ax), "menu File ▸ New Snippet did not fire"

        name = field(ax, "Type snippet name")
        assert name is not None, "no text_field titled 'Type snippet name'"
        assert kit.rb_value((name.value or "").strip(), "Untitled snippet"), \
            f"snippet name box = {name.value!r} (expected 'Untitled snippet')"

        tag = field(ax, "Add Tag")
        assert tag is not None, "no text_field titled 'Add Tag'"
        assert (tag.name or "") == "Add Tag", f"tag placeholder={tag.name!r}"

        pv = popup_values(ax)
        assert "Plain Text" in pv, f"language popup value not 'Plain Text'; popups={pv}"

        ls = labels(ax)
        cursor = first_label_matching(ls, r"^Line \d+, Column \d+$")
        assert kit.rb_value(cursor, "Line 1, Column 1"), \
            f"cursor status = {cursor!r}; labels={sorted(set(ls))[:40]}"

        screenshot_assert(
            "text_snippet_editor",
            "massCode snippet editor for a freshly created snippet: the name box at the top "
            "of the right-hand pane reads 'Untitled snippet', below it an empty tag input "
            "placeholdered 'Add Tag', then an empty code editor area. The bottom bar shows "
            "the language dropdown reading 'Plain Text' and the cursor status text "
            "'Line 1, Column 1'. The middle list shows an 'Untitled snippet' row.")


class TestAboutDialogText:
    """Text inside the modal About sheet (depth 1 — massCode ▸ About massCode)."""

    @pytest.mark.rb(depth=1, jump_kind="value",
                    expect="About sheet shows the title 'massCode', a detail block containing "
                           "'Version' and an OK button")
    def test_about_dialog_text(self, ax):
        app_ready(ax)
        assert rb_enter_menu(ax, ["massCode", "About massCode"], settle=1.8), \
            "menu massCode ▸ About massCode did not fire"

        sh = sheets(ax)
        assert len(sh) == 1, f"expected exactly 1 sheet, found {len(sh)}"
        sheet_id = sh[0].id

        sheet_labels = [(l.value or "") for l in
                        ax.find(role="label", root_id=sheet_id, max_results=20, max_depth=8)
                        if l.value]
        assert any(t.strip() == "massCode" for t in sheet_labels), \
            f"About sheet has no 'massCode' title label; labels={sheet_labels}"

        ok = named_button(ax, "OK", root_id=sheet_id)
        assert ok is not None, \
            f"About sheet has no OK button; buttons={button_names(ax, root_id=sheet_id)}"

        # NEVER assert the version digits — only that a Version line is rendered.
        has_version = any("Version" in t for t in sheet_labels)
        assert kit.rb_value(has_version, True), \
            f"About detail text has no 'Version' line; labels={sheet_labels}"

        ax.action(ok.id, "AXPress")
        time.sleep(1.0)
        assert len(sheets(ax)) == 0, "About sheet did not close after pressing OK"


class TestTextTransitions:
    """Text that CHANGES as a result of an interaction (depth 1 — snippet editor)."""

    @pytest.mark.rb(depth=1, jump_kind="transition",
                    expect="snippet-list row text follows the rename to 'RB Text Marker'")
    def test_snippet_rename_updates_list_row(self, ax):
        app_ready(ax)
        go_home(ax)
        assert rb_enter_new_snippet(ax), "menu File ▸ New Snippet did not fire"

        name = field(ax, "Type snippet name")
        assert name is not None, "no text_field titled 'Type snippet name'"

        before_labels = labels(ax)
        assert "Untitled snippet" in before_labels, \
            f"new snippet row not listed; labels={sorted(set(before_labels))[:40]}"

        assert ax.set_value(name.id, "RB Text Marker"), "set_value on the name box failed"
        time.sleep(1.2)
        after_labels = labels(ax)

        assert "RB Text Marker" in after_labels, \
            f"renamed row text missing; labels={sorted(set(after_labels))[:40]}"

        # State-relative: other snippets may ALSO be called 'Untitled snippet', so flip on
        # the COUNT of that row text (membership alone is not decisive with leftover state).
        before_n = before_labels.count("Untitled snippet")
        after_n = after_labels.count("Untitled snippet")
        assert kit.rb_flip(before_n, after_n,
                           expect="list row text follows the renamed snippet"), \
            f"'Untitled snippet' row count unchanged ({before_n} -> {after_n})"
        assert after_n == before_n - 1, \
            f"expected exactly one 'Untitled snippet' row to be renamed ({before_n} -> {after_n})"

    @pytest.mark.rb(depth=1, jump_kind="transition",
                    expect="'RB Search Marker' row hidden by a non-matching query and "
                           "restored by a matching one")
    def test_search_filters_snippet_list_text(self, ax):
        app_ready(ax)
        go_home(ax)
        assert rb_enter_new_snippet(ax), "menu File ▸ New Snippet did not fire"

        name = field(ax, "Type snippet name")
        assert name is not None, "no text_field titled 'Type snippet name'"
        assert ax.set_value(name.id, "RB Search Marker"), "set_value on the name box failed"
        time.sleep(1.0)

        s = field(ax, "Search...")
        assert s is not None, "no text_field titled 'Search...'"
        assert ax.set_value(s.id, "zzzznomatch"), "set_value on the search box failed"
        time.sleep(1.5)
        filtered = labels(ax)
        row_when_filtered = "RB Search Marker" in filtered
        gone = (not row_when_filtered) and ("No Snippet Selected" in filtered)

        s2 = field(ax, "Search...")
        assert s2 is not None, "search box disappeared while filtering"
        assert ax.set_value(s2.id, "RB Search Marker"), "set_value on the search box failed"
        time.sleep(1.5)
        restored = labels(ax)
        row_when_matching = "RB Search Marker" in restored
        back = row_when_matching

        assert kit.rb_flip(row_when_filtered, row_when_matching,
                           expect="search hides then re-shows the snippet row"), \
            (f"row visibility did not flip: filtered={row_when_filtered} "
             f"matching={row_when_matching}")
        assert gone, ("query 'zzzznomatch' did not hide the row / show 'No Snippet Selected'; "
                      f"labels={sorted(set(filtered))[:40]}")
        assert back, ("query 'RB Search Marker' did not restore the row; "
                      f"labels={sorted(set(restored))[:40]}")

        s3 = field(ax, "Search...")
        if s3 is not None:
            ax.set_value(s3.id, "")
            time.sleep(0.4)