#!/usr/bin/env python3
"""COMPUTATION lane — the app's CORE FUNCTION (input -> output) for the Aegis
Authenticator (TOTP/HOTP 2FA). Sole owner of jump_kind="value".

The core transform is TOTP code generation. Absolute code values are NOT asserted
against wall-clock time — there is a ~30 s clock skew between adb and the app, so
an absolute code is flaky. Every value test here is DETERMINISTIC and
clock-independent:

  * same secret        -> identical code          (RFC-6238 is a pure function)
  * different secret   -> (almost surely) differ
  * digits setting     -> code length             (6 default, 8 configured)
  * code format        -> digits + spaces only, len(strip) == configured digits
  * search filter      -> "Showing N entries" + which issuers remain visible

All expected values were OBSERVED on the running original, never computed here.

Nothing is keyed on package / paths / coordinates: the same file scores a
from-scratch recreation at a different package name.

Run:
  python3 test_android_computation.py <PACKAGE> <RESULTS_DIR>
"""
import os
import re
import sys

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from android_testgen_kit import *          # noqa: F403,E402

# Distinctive markers + valid base32 secrets (from recon; verified live).
SEC_A = "JBSWY3DPEHPK3PXP"
SEC_B = "GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ"


# ── shared plumbing (own copies — NOT imported from the interaction lane) ────────

def _kb_off():
    """Lower the soft keyboard on the edit form WITHOUT navigating.

    The kit's hide_keyboard() can fall back to BACK, and on EditEntryActivity BACK
    raises the "changes have not been saved" discard dialog which corrupts a
    multi-field fill. KEYCODE_ESCAPE lowers the IME with no navigation (verified).
    """
    if keyboard_visible():
        press_key("KEYCODE_ESCAPE")
        settle("keyboard")
    return not keyboard_visible()


def and_enter_main(clear=False):
    """Get to MainActivity. clear=True wipes the vault first (virgin DB).

    Runs the 4-tap onboarding skip by resource-id only, choosing rb_none so the
    vault opens directly on every relaunch (no unlock screen). Returns the last
    fresh node list, or None if Main was never reached.
    """
    if clear:
        clear_data()
    restart_app()
    wait_for_foreground()
    n = ui()
    if node_by_id(n, "btnNext"):
        for rid in ("btnNext", "rb_none", "btnNext", "btnNext"):
            t = node_by_id(n, rid)
            if t is None or not tap_node(t):
                return None
            n = ui()
    if node_by_id(n, "fab") is None:
        return None
    return n


def _count_text(nodes=None):
    nodes = ui() if nodes is None else nodes
    c = node_by_id(nodes, "entries_shown_count")
    return (c or {}).get("text")


def _issuers(nodes=None):
    """Top-to-bottom list of profile_issuer strings currently shown."""
    nodes = ui() if nodes is None else nodes
    rows = [(x["_bounds"][1], x.get("text", ""))
            for x in nodes
            if x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_issuer"
            and "_bounds" in x]
    return [t for _y, t in sorted(rows)]


def _code_for(issuer, nodes=None):
    """profile_code of the row whose profile_issuer == `issuer` (space-stripped).

    Matches by y-band: the issuer label and its code sit on the same row, so the
    code is the profile_code node closest below the issuer's top edge. Returns ""
    when not found.
    """
    nodes = ui() if nodes is None else nodes
    iss_y = None
    for x in nodes:
        if (x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_issuer"
                and x.get("text") == issuer and "_bounds" in x):
            iss_y = x["_bounds"][1]
            break
    if iss_y is None:
        return ""
    best, best_dy = "", 10 ** 9
    for x in nodes:
        if (x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_code"
                and "_bounds" in x):
            dy = abs(x["_bounds"][1] - iss_y)
            if dy < best_dy:
                best, best_dy = x.get("text", ""), dy
    # Only accept a code on the same row (rows are ~300px tall on this device).
    return best.replace(" ", "") if best_dy < 260 else ""


def _all_codes(nodes=None):
    """Every profile_code on screen (space-stripped), top-to-bottom."""
    nodes = ui() if nodes is None else nodes
    rows = [(x["_bounds"][1], x.get("text", ""))
            for x in nodes
            if x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_code"
            and "_bounds" in x]
    return [t.replace(" ", "") for _y, t in sorted(rows)]


def _raw_code_text(issuer, nodes=None):
    """The profile_code text WITH spaces (to check the grouping format)."""
    nodes = ui() if nodes is None else nodes
    iss_y = None
    for x in nodes:
        if (x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_issuer"
                and x.get("text") == issuer and "_bounds" in x):
            iss_y = x["_bounds"][1]
            break
    if iss_y is None:
        return ""
    best, best_dy = "", 10 ** 9
    for x in nodes:
        if (x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_code"
                and "_bounds" in x):
            dy = abs(x["_bounds"][1] - iss_y)
            if dy < best_dy:
                best, best_dy = x.get("text", ""), dy
    return best if best_dy < 260 else ""


def _row_node(issuer, nodes=None):
    """The profile_issuer node with text == issuer, from a fresh/given dump."""
    nodes = ui() if nodes is None else nodes
    for x in nodes:
        if (x.get("resource-id", "").rsplit("/", 1)[-1] == "profile_issuer"
                and x.get("text") == issuer):
            return x
    return None


def and_enter_editor():
    """Main -> FAB menu -> Enter manually -> EditEntryActivity. Backs a depth>=1
    claim via the and_enter_* NAME + an and_enter() call once the surface changes."""
    n = ui()
    fab = node_by_id(n, "fab")
    if fab is None or not tap_node(fab):
        return False
    n = ui()
    enter = node_by_id(n, "fab_menu_item_enter")
    if enter is None or not tap_node(enter):
        return False
    settle("tap")
    if not get_current_activity().endswith("EditEntryActivity"):
        return False
    and_enter("editor")
    return True


def _clear_field(node, rid):
    """Select-to-end + delete an EditText, then return the fresh node."""
    if not tap_node(node):
        return None
    settle("keyboard")
    press_key("KEYCODE_MOVE_END")
    for _ in range(14):
        press_key("KEYCODE_DEL")
    settle("text")
    return node_by_id(ui(), rid)


def and_expand_advanced():
    """On EditEntryActivity, expand the Advanced accordion so text_digits /
    dropdown_type become visible. Counts as crossing into that section."""
    n = ui()
    if node_by_id(n, "text_digits") is not None:
        return True                       # already expanded
    hdr = node_by_id(n, "accordian_header") or find_node_ci(n, "Advanced")
    if hdr is None or not tap_node(hdr):
        return False
    settle("tap")
    if node_by_id(ui(), "text_digits") is None:
        return False
    and_enter("advanced")
    return True


def and_create_entry(name, issuer, secret, *, digits=None, type_name=None):
    """FAB -> Enter manually -> fill name/issuer/secret (+ optional Advanced
    digits / type) -> SAVE. Returns True only when we land on Main with the new
    issuer visible."""
    if not and_enter_editor():
        return False
    n = ui()
    nm = node_by_id(n, "text_name")
    if nm is None or not type_text(nm, name):
        return False
    _kb_off()
    n = ui()
    iss = node_by_id(n, "text_issuer")
    if iss is None or not type_text(iss, issuer):
        return False
    _kb_off()
    n = ui()
    sec = node_by_id(n, "text_secret")
    if sec is None or not type_text(sec, secret):
        return False
    _kb_off()
    if digits is not None or type_name is not None:
        if not and_expand_advanced():
            return False
        if type_name is not None:
            n = ui()
            dd = node_by_id(n, "dropdown_type")
            if dd is None or not tap_node(dd):
                return False
            settle("tap")
            opt = find_node_ci(ui(), type_name)
            if opt is None or not tap_node(opt):
                return False
            settle("tap")
            _kb_off()
        if digits is not None:
            n = ui()
            dg = node_by_id(n, "text_digits")
            dg = _clear_field(dg, "text_digits")
            if dg is None or not type_text(dg, str(digits)):
                return False
            _kb_off()
    n = ui()
    save = node_by_id(n, "action_save")
    if save is None or not tap_node(save):
        return False
    n = ui()
    if find_node_ci(n, "Error saving profile"):
        return False
    if find_node_ci(n, "Your changes have not been saved"):
        sv = find_node(n, text="Save")
        if sv:
            tap_node(sv)
            n = ui()
    if not get_current_activity().endswith("MainActivity"):
        return False
    return find_node_ci(ui(), issuer) is not None


def and_open_search():
    """Main -> Search icon -> in-toolbar SearchView. Counts one surface."""
    n = ui()
    sb = node_by_id(n, "search_button")
    if sb is None or not tap_node(sb):
        return False
    settle("tap")
    if node_by_id(ui(), "search_src_text") is None:
        return False
    and_enter("search")
    return True


def _type_search(query):
    """Clear the search field then type `query`. Returns the visible field text."""
    st = node_by_id(ui(), "search_src_text")
    if st is None:
        return None
    tap_node(st)
    settle("keyboard")
    press_key("KEYCODE_MOVE_END")
    for _ in range(16):
        press_key("KEYCODE_DEL")
    settle("text")
    st = node_by_id(ui(), "search_src_text")
    if st is None or not type_text(st, query):
        return None
    return (node_by_id(ui(), "search_src_text") or {}).get("text")


# ══════════════════════════════════════════════════════════════════════════════
# 1. PRIMARY value test — same secret -> IDENTICAL code (RFC-6238 is a function)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_same_secret_same_code",))
def test_same_secret_same_code():
    if and_enter_main(clear=True) is None:
        record("computation_same_secret_same_code", False,
               "setup_failed: could not reach MainActivity",
               depth=0, jump_kind="value", expect="iSameA code == iSameB code")
        return
    if not (and_create_entry("nSameA", "iSameA", SEC_B)
            and and_create_entry("nSameB", "iSameB", SEC_B)):
        record("computation_same_secret_same_code", False,
               "feature_missing: could not create two entries",
               depth=0, jump_kind="value", expect="iSameA code == iSameB code")
        return
    n = ui()
    ca, cb = _code_for("iSameA", n), _code_for("iSameB", n)
    ok = bool(ca) and bool(cb) and ca == cb
    record("computation_same_secret_same_code", ok,
           "" if ok else f"behavior_wrong: identical secret gave codes "
                         f"{ca!r} vs {cb!r} (must be equal)",
           depth=0, jump_kind="value", expect="iSameA code == iSameB code")


# ══════════════════════════════════════════════════════════════════════════════
# 2. Different secrets -> different codes (almost surely)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_diff_secret_diff_code",))
def test_diff_secret_diff_code():
    if and_enter_main(clear=True) is None:
        record("computation_diff_secret_diff_code", False,
               "setup_failed: could not reach MainActivity",
               depth=0, jump_kind="value", expect="iDiffA code != iDiffB code")
        return
    if not (and_create_entry("nDiffA", "iDiffA", SEC_A)
            and and_create_entry("nDiffB", "iDiffB", SEC_B)):
        record("computation_diff_secret_diff_code", False,
               "feature_missing: could not create two entries",
               depth=0, jump_kind="value", expect="iDiffA code != iDiffB code")
        return
    n = ui()
    ca, cb = _code_for("iDiffA", n), _code_for("iDiffB", n)
    ok = bool(ca) and bool(cb) and ca != cb
    record("computation_diff_secret_diff_code", ok,
           "" if ok else f"behavior_wrong: different secrets gave equal code "
                         f"{ca!r} == {cb!r}",
           depth=0, jump_kind="value", expect="iDiffA code != iDiffB code")


# ══════════════════════════════════════════════════════════════════════════════
# 3. Default code length == 6 digits (format "XXX XXX")
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_default_six_digits",))
def test_default_six_digits():
    if and_enter_main(clear=True) is None or not and_create_entry("n6", "iSix", SEC_A):
        record("computation_default_six_digits", False,
               "setup_failed: could not create a default entry",
               depth=0, jump_kind="value", expect="code has exactly 6 digits")
        return
    n = ui()
    code = _code_for("iSix", n)
    ok = bool(code) and len(code) == 6 and code.isdigit()
    record("computation_default_six_digits", ok,
           "" if ok else f"behavior_wrong: default code {code!r} has "
                         f"{len(code)} digits (expected 6)",
           depth=0, jump_kind="value", expect="code has exactly 6 digits")


# ══════════════════════════════════════════════════════════════════════════════
# 4. Default grouping format is exactly "XXX XXX"
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_default_grouping_format",))
def test_default_grouping_format():
    if and_enter_main(clear=True) is None or not and_create_entry("ng", "iGrp", SEC_A):
        record("computation_default_grouping_format", False,
               "setup_failed: could not create a default entry",
               depth=0, jump_kind="value", expect="code text matches 'DDD DDD'")
        return
    raw = _raw_code_text("iGrp", ui())
    ok = bool(re.fullmatch(r"\d{3} \d{3}", raw))
    record("computation_default_grouping_format", ok,
           "" if ok else f"behavior_wrong: code text {raw!r} is not 'DDD DDD'",
           depth=0, jump_kind="value", expect="code text matches 'DDD DDD'")


# ══════════════════════════════════════════════════════════════════════════════
# 5. Digits setting -> code length == 8 (Advanced accordion; depth>=1)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_digits_eight",))
def test_digits_eight():
    if and_enter_main(clear=True) is None:
        record("computation_digits_eight", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", expect="code has exactly 8 digits")
        return
    if not and_create_entry("n8", "iEight", SEC_A, digits=8):
        record("computation_digits_eight", False,
               "feature_missing: could not set Advanced digits=8 and save",
               depth=1, jump_kind="value", expect="code has exactly 8 digits")
        return
    code = _code_for("iEight", ui())
    ok = bool(code) and len(code) == 8 and code.isdigit()
    record("computation_digits_eight", ok,
           "" if ok else f"behavior_wrong: digits=8 gave code {code!r} with "
                         f"{len(code)} digits (expected 8)",
           depth=1, jump_kind="value", expect="code has exactly 8 digits")


# ══════════════════════════════════════════════════════════════════════════════
# 6. 8-digit grouping format is exactly "XXX XXX XX"
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_eight_grouping_format",))
def test_eight_grouping_format():
    if and_enter_main(clear=True) is None:
        record("computation_eight_grouping_format", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", expect="code text matches 'DDD DDD DD'")
        return
    if not and_create_entry("n8g", "iEightG", SEC_A, digits=8):
        record("computation_eight_grouping_format", False,
               "feature_missing: could not set Advanced digits=8 and save",
               depth=1, jump_kind="value", expect="code text matches 'DDD DDD DD'")
        return
    raw = _raw_code_text("iEightG", ui())
    ok = bool(re.fullmatch(r"\d{3} \d{3} \d{2}", raw))
    record("computation_eight_grouping_format", ok,
           "" if ok else f"behavior_wrong: 8-digit code text {raw!r} is not "
                         f"'DDD DDD DD'",
           depth=1, jump_kind="value", expect="code text matches 'DDD DDD DD'")


# ══════════════════════════════════════════════════════════════════════════════
# 7. Digits contrast: a 6-digit row and an 8-digit row coexist with the right lens
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_digits_contrast",))
def test_digits_contrast():
    if and_enter_main(clear=True) is None:
        record("computation_digits_contrast", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", expect="iC6->6 digits, iC8->8 digits")
        return
    if not (and_create_entry("nc6", "iC6", SEC_A)
            and and_create_entry("nc8", "iC8", SEC_A, digits=8)):
        record("computation_digits_contrast", False,
               "feature_missing: could not create a 6- and an 8-digit entry",
               depth=1, jump_kind="value", expect="iC6->6 digits, iC8->8 digits")
        return
    n = ui()
    c6, c8 = _code_for("iC6", n), _code_for("iC8", n)
    ok = (bool(c6) and bool(c8) and len(c6) == 6 and len(c8) == 8
          and c6.isdigit() and c8.isdigit())
    record("computation_digits_contrast", ok,
           "" if ok else f"behavior_wrong: iC6={c6!r}({len(c6)}) iC8={c8!r}"
                         f"({len(c8)}) (expected 6 and 8)",
           depth=1, jump_kind="value", expect="iC6->6 digits, iC8->8 digits")


# ══════════════════════════════════════════════════════════════════════════════
# 8. Code format: only digits + spaces, and len(strip) == configured digits (6)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_code_charset",))
def test_code_charset():
    if and_enter_main(clear=True) is None or not and_create_entry("ncs", "iCharset", SEC_B):
        record("computation_code_charset", False,
               "setup_failed: could not create an entry",
               depth=0, jump_kind="value", expect="code is /^[0-9 ]+$/ with 6 digits")
        return
    raw = _raw_code_text("iCharset", ui())
    only_digits_spaces = bool(raw) and bool(re.fullmatch(r"[0-9 ]+", raw))
    ndig = len(raw.replace(" ", ""))
    ok = only_digits_spaces and ndig == 6
    record("computation_code_charset", ok,
           "" if ok else f"behavior_wrong: code text {raw!r} not digits+spaces "
                         f"or digit-count {ndig} != 6",
           depth=0, jump_kind="value", expect="code is /^[0-9 ]+$/ with 6 digits")


# ══════════════════════════════════════════════════════════════════════════════
# 9. Code is STABLE within a 30 s period (two close reads must match)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_code_stable_in_period",))
def test_code_stable_in_period():
    if and_enter_main(clear=True) is None or not and_create_entry("nst", "iStable", SEC_B):
        record("computation_code_stable_in_period", False,
               "setup_failed: could not create an entry",
               depth=0, jump_kind="value", expect="two close reads give the same code")
        return
    c1 = _code_for("iStable", ui())
    c2 = _code_for("iStable", ui())      # a fresh dump, only ~1 s later
    ok = bool(c1) and c1 == c2
    record("computation_code_stable_in_period", ok,
           "" if ok else f"behavior_wrong: code changed within one read pair "
                         f"{c1!r} -> {c2!r}",
           depth=0, jump_kind="value", expect="two close reads give the same code")


# ══════════════════════════════════════════════════════════════════════════════
# 10. Copy code -> the clipboard holds the code that was displayed AT COPY TIME.
#     We read the clipboard THROUGH the app: copy, then paste into the search
#     field and read its text back. depth>=1 (action mode + search surface).
#
#     The copy + navigate-to-search sequence can straddle a 30 s TOTP period
#     boundary, so a single displayed-code snapshot goes stale. We therefore
#     accept the clipboard iff it equals a code the app ACTUALLY showed for this
#     row during the copy window (the read right before AND the read right after
#     the copy tap). This stays strict — the clipboard must match an OBSERVED
#     displayed code, never an arbitrary 6-digit string — while tolerating the
#     one boundary the slow navigation can cross.
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_copy_matches_display",))
def test_copy_matches_display():
    if and_enter_main(clear=True) is None or not and_create_entry("ncp", "iCopy", SEC_A):
        record("computation_copy_matches_display", False,
               "setup_failed: could not create an entry to copy",
               depth=1, jump_kind="value", expect="clipboard digits == a displayed code")
        return
    # Read the code and locate the row from the SAME dump, so the copy happens
    # immediately after the snapshot.
    n = ui()
    disp_before = _code_for("iCopy", n)
    row = _row_node("iCopy", n)
    if not disp_before or row is None:
        record("computation_copy_matches_display", False,
               "setup_failed: could not read the displayed code / row",
               depth=1, jump_kind="value", expect="clipboard digits == a displayed code")
        return
    # Long-press the row -> action mode -> Copy.
    if not long_press(row):
        record("computation_copy_matches_display", False,
               "feature_missing: long-press did not open action mode",
               depth=1, jump_kind="value", expect="clipboard digits == a displayed code")
        return
    and_enter("action_mode")
    cp = node_by_id(ui(), "action_copy")
    if cp is None or not tap_node(cp):
        record("computation_copy_matches_display", False,
               "feature_missing: no Copy control in action mode",
               depth=1, jump_kind="value", expect="clipboard digits == a displayed code")
        return
    settle("tap")
    # Leave action mode if still up, then read the code AGAIN from Main — this
    # brackets the copy so a boundary crossing is captured either side.
    done = node_by_id(ui(), "action_mode_close_button")
    if done:
        tap_node(done)
        settle("tap")
    disp_after = _code_for("iCopy", ui())
    valid_codes = {c for c in (disp_before, disp_after) if c}
    # Paste the clipboard into the search field and read it back.
    if not and_open_search():
        record("computation_copy_matches_display", False,
               "setup_failed: could not open search to read the clipboard back",
               depth=1, jump_kind="value", expect="clipboard digits == a displayed code")
        return
    st = node_by_id(ui(), "search_src_text")
    tap_node(st)
    settle("keyboard")
    press_key(279)                       # KEYCODE_PASTE
    settle("text")
    pasted = (node_by_id(ui(), "search_src_text") or {}).get("text", "") or ""
    clip_digits = re.sub(r"\D", "", pasted)
    ok = bool(clip_digits) and clip_digits in valid_codes
    record("computation_copy_matches_display", ok,
           "" if ok else f"behavior_wrong: pasted clipboard {pasted!r} "
                         f"(digits {clip_digits!r}) not in displayed codes "
                         f"{sorted(valid_codes)}",
           depth=1, jump_kind="value", expect="clipboard digits == a displayed code")


# ══════════════════════════════════════════════════════════════════════════════
# 11. Search filter: exact issuer query -> "Showing 1 entry" + only that issuer
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_search_matches_one",))
def test_search_matches_one():
    if and_enter_main(clear=True) is None:
        record("computation_search_matches_one", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", expect="Showing 1 entry + only AppleCorp")
        return
    if not (and_create_entry("na", "AppleCorp", SEC_A)
            and and_create_entry("nb", "BananaInc", SEC_B)):
        record("computation_search_matches_one", False,
               "feature_missing: could not create two entries",
               depth=1, jump_kind="value", expect="Showing 1 entry + only AppleCorp")
        return
    if not and_open_search():
        record("computation_search_matches_one", False,
               "feature_missing: could not open Search",
               depth=1, jump_kind="value", expect="Showing 1 entry + only AppleCorp")
        return
    _type_search("Apple")
    n = ui()
    cnt = _count_text(n)
    iss = _issuers(n)
    ok = cnt == "Showing 1 entry" and iss == ["AppleCorp"]
    record("computation_search_matches_one", ok,
           "" if ok else f"behavior_wrong: query 'Apple' -> count {cnt!r} "
                         f"issuers {iss!r} (expected 'Showing 1 entry' + ['AppleCorp'])",
           depth=1, jump_kind="value", expect="Showing 1 entry + only AppleCorp")


# ══════════════════════════════════════════════════════════════════════════════
# 12. Search filter: no-match query -> "Showing 0 entries", no rows
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_search_matches_none",))
def test_search_matches_none():
    if and_enter_main(clear=True) is None:
        record("computation_search_matches_none", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", expect="Showing 0 entries + no rows")
        return
    if not (and_create_entry("na", "AppleCorp", SEC_A)
            and and_create_entry("nb", "BananaInc", SEC_B)):
        record("computation_search_matches_none", False,
               "feature_missing: could not create two entries",
               depth=1, jump_kind="value", expect="Showing 0 entries + no rows")
        return
    if not and_open_search():
        record("computation_search_matches_none", False,
               "feature_missing: could not open Search",
               depth=1, jump_kind="value", expect="Showing 0 entries + no rows")
        return
    _type_search("ZZZQQ")
    n = ui()
    cnt = _count_text(n)
    iss = _issuers(n)
    ok = cnt == "Showing 0 entries" and iss == []
    record("computation_search_matches_none", ok,
           "" if ok else f"behavior_wrong: query 'ZZZQQ' -> count {cnt!r} "
                         f"issuers {iss!r} (expected 'Showing 0 entries' + [])",
           depth=1, jump_kind="value", expect="Showing 0 entries + no rows")


# ══════════════════════════════════════════════════════════════════════════════
# 13. Search is case-insensitive substring: lowercase query still matches issuer
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_search_case_insensitive",))
def test_search_case_insensitive():
    if and_enter_main(clear=True) is None:
        record("computation_search_case_insensitive", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", expect="'banana' -> Showing 1 entry + BananaInc")
        return
    if not (and_create_entry("na", "AppleCorp", SEC_A)
            and and_create_entry("nb", "BananaInc", SEC_B)):
        record("computation_search_case_insensitive", False,
               "feature_missing: could not create two entries",
               depth=1, jump_kind="value", expect="'banana' -> Showing 1 entry + BananaInc")
        return
    if not and_open_search():
        record("computation_search_case_insensitive", False,
               "feature_missing: could not open Search",
               depth=1, jump_kind="value", expect="'banana' -> Showing 1 entry + BananaInc")
        return
    _type_search("banana")               # lowercase substring of "BananaInc"
    n = ui()
    cnt = _count_text(n)
    iss = _issuers(n)
    ok = cnt == "Showing 1 entry" and iss == ["BananaInc"]
    record("computation_search_case_insensitive", ok,
           "" if ok else f"behavior_wrong: query 'banana' -> count {cnt!r} "
                         f"issuers {iss!r} (expected 'Showing 1 entry' + ['BananaInc'])",
           depth=1, jump_kind="value", expect="'banana' -> Showing 1 entry + BananaInc")


# ══════════════════════════════════════════════════════════════════════════════
# 14. Search transition: a matching row is PRESENT, then a no-match query makes
#     it ABSENT — the discriminator's positive/negative pairing.
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_search_present_then_absent",))
def test_search_present_then_absent():
    if and_enter_main(clear=True) is None or not and_create_entry("nsp", "SoloIssuer", SEC_A):
        record("computation_search_present_then_absent", False,
               "setup_failed: could not create an entry",
               depth=1, jump_kind="transition", expect="SoloIssuer present->absent on no-match")
        return
    if not and_open_search():
        record("computation_search_present_then_absent", False,
               "feature_missing: could not open Search",
               depth=1, jump_kind="transition", expect="SoloIssuer present->absent on no-match")
        return
    _type_search("Solo")
    present = find_node_ci(ui(), "SoloIssuer") is not None
    _type_search("ZZZQQ")
    absent = find_node_ci(ui(), "SoloIssuer") is None
    ok = present and absent
    record("computation_search_present_then_absent", ok,
           "" if ok else f"behavior_wrong: SoloIssuer present_on_match={present} "
                         f"absent_on_nomatch={absent}",
           depth=1, jump_kind="transition", expect="SoloIssuer present->absent on no-match")


# ══════════════════════════════════════════════════════════════════════════════
# 15. TOTP type default is "TOTP" (Advanced spinner default) — value in editor
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_type_default_totp",))
def test_type_default_totp():
    if and_enter_main(clear=True) is None or not and_enter_editor():
        record("computation_type_default_totp", False,
               "setup_failed: could not open the editor",
               depth=2, jump_kind="value", expect="dropdown_type == 'TOTP'")
        return
    if not and_expand_advanced():
        record("computation_type_default_totp", False,
               "feature_missing: could not expand Advanced",
               depth=2, jump_kind="value", expect="dropdown_type == 'TOTP'")
        return
    dd = node_by_id(ui(), "dropdown_type")
    got = (dd or {}).get("text")
    ok = got == "TOTP"
    record("computation_type_default_totp", ok,
           "" if ok else f"behavior_wrong: default type spinner is {got!r} "
                         f"(expected 'TOTP')",
           depth=2, jump_kind="value", expect="dropdown_type == 'TOTP'")


# ══════════════════════════════════════════════════════════════════════════════
# 16. Default digits field default is "6" (Advanced) — value in editor
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_digits_field_default_six",))
def test_digits_field_default_six():
    if and_enter_main(clear=True) is None or not and_enter_editor():
        record("computation_digits_field_default_six", False,
               "setup_failed: could not open the editor",
               depth=2, jump_kind="value", expect="text_digits == '6'")
        return
    if not and_expand_advanced():
        record("computation_digits_field_default_six", False,
               "feature_missing: could not expand Advanced",
               depth=2, jump_kind="value", expect="text_digits == '6'")
        return
    dg = node_by_id(ui(), "text_digits")
    got = (dg or {}).get("text")
    ok = got == "6"
    record("computation_digits_field_default_six", ok,
           "" if ok else f"behavior_wrong: default digits field is {got!r} "
                         f"(expected '6')",
           depth=2, jump_kind="value", expect="text_digits == '6'")


# ══════════════════════════════════════════════════════════════════════════════
# 17. Period field default is "30" (Advanced) — value in editor
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("computation_period_field_default_thirty",))
def test_period_field_default_thirty():
    if and_enter_main(clear=True) is None or not and_enter_editor():
        record("computation_period_field_default_thirty", False,
               "setup_failed: could not open the editor",
               depth=2, jump_kind="value", expect="text_period_counter == '30'")
        return
    if not and_expand_advanced():
        record("computation_period_field_default_thirty", False,
               "feature_missing: could not expand Advanced",
               depth=2, jump_kind="value", expect="text_period_counter == '30'")
        return
    pc = node_by_id(ui(), "text_period_counter")
    got = (pc or {}).get("text")
    ok = got == "30"
    record("computation_period_field_default_thirty", ok,
           "" if ok else f"behavior_wrong: default period field is {got!r} "
                         f"(expected '30')",
           depth=2, jump_kind="value", expect="text_period_counter == '30'")


# ══════════════════════════════════════════════════════════════════════════════
# ── VLM cluster (exactly 4): genuinely RENDERED code properties ─────────────────
# All questions authored from screenshots captured on the running original.
# Fine tags used: color, size, position, size (>= 2 distinct fine tags).
# NOTE observed on the original: this build shows NO per-row countdown pie/ring,
# so that property is deliberately NOT asserted (it would fail on the ground
# truth). Instead VLM #1 asserts the code's distinct accent colour, which IS
# rendered (the code sits in a clear blue, unlike the black issuer text).
# ══════════════════════════════════════════════════════════════════════════════

# VLM #1 — the generated code digits are rendered in a distinct ACCENT COLOUR.
@and_test(expects=("computation_code_accent_color_vlm",))
def test_code_accent_color_vlm():
    if and_enter_main(clear=True) is None or not and_create_entry("nac", "iAccent", SEC_B):
        record("computation_code_accent_color_vlm", False,
               "setup_failed: could not create an entry",
               depth=0, jump_kind="value", tag="color")
        return
    vlm_assert("computation_code_accent_color",
               "On the single authenticator entry row, are the large numeric TOTP "
               "code digits rendered in a distinct coloured accent (for example a "
               "blue/teal tint) that is clearly DIFFERENT from the plain black/dark "
               "issuer and account-name text on the same row?",
               RESULTS_DIR, expect="YES", depth=0, jump_kind="value", tag="color")


# VLM #2 — the TOTP code digits are rendered large (prominent size).
@and_test(expects=("computation_code_large_font_vlm",))
def test_code_large_font_vlm():
    if and_enter_main(clear=True) is None or not and_create_entry("nlf", "iLargeFont", SEC_B):
        record("computation_code_large_font_vlm", False,
               "setup_failed: could not create an entry",
               depth=0, jump_kind="value", tag="size")
        return
    vlm_assert("computation_code_large_font",
               "On the single authenticator entry row, are the numeric TOTP code "
               "digits rendered in a noticeably LARGER font than the smaller "
               "issuer/account-name text on the same row (i.e. the code is the "
               "most prominent text)?",
               RESULTS_DIR, expect="YES", depth=0, jump_kind="value", tag="size")


# VLM #3 — the 6-digit code is split into two space-separated groups of 3.
@and_test(expects=("computation_code_grouped_vlm",))
def test_code_grouped_vlm():
    if and_enter_main(clear=True) is None or not and_create_entry("ngp", "iGrouped", SEC_A):
        record("computation_code_grouped_vlm", False,
               "setup_failed: could not create an entry",
               depth=0, jump_kind="value", tag="position")
        return
    vlm_assert("computation_code_grouped",
               "Look at the six-digit TOTP code on the entry row. Is it displayed "
               "as TWO groups of three digits separated by a visible gap/space "
               "(for example '123 456'), rather than six digits with no gap?",
               RESULTS_DIR, expect="YES", depth=0, jump_kind="value", tag="position")


# VLM #4 — an 8-digit code is visibly WIDER than a 6-digit code on the same list.
@and_test(expects=("computation_eight_wider_than_six_vlm",))
def test_eight_wider_than_six_vlm():
    if and_enter_main(clear=True) is None:
        record("computation_eight_wider_than_six_vlm", False,
               "setup_failed: could not reach MainActivity",
               depth=1, jump_kind="value", tag="size")
        return
    # Name them so their alphabetical relation makes the 6-digit row sit above.
    if not (and_create_entry("na", "Alpha6", SEC_A)
            and and_create_entry("nz", "Zulu8", SEC_A, digits=8)):
        record("computation_eight_wider_than_six_vlm", False,
               "feature_missing: could not create a 6- and an 8-digit entry",
               depth=1, jump_kind="value", tag="size")
        return
    vlm_assert("computation_eight_wider_than_six",
               "This authenticator list has two entries. One shows a six-digit "
               "code and the other shows an eight-digit code. Is the eight-digit "
               "code visibly WIDER (occupies more horizontal space) than the "
               "six-digit code?",
               RESULTS_DIR, expect="YES", depth=1, jump_kind="value", tag="size")


TESTS = [
    test_same_secret_same_code,
    test_diff_secret_diff_code,
    test_default_six_digits,
    test_default_grouping_format,
    test_digits_eight,
    test_eight_grouping_format,
    test_digits_contrast,
    test_code_charset,
    test_code_stable_in_period,
    test_copy_matches_display,
    test_search_matches_one,
    test_search_matches_none,
    test_search_case_insensitive,
    test_search_present_then_absent,
    test_type_default_totp,
    test_digits_field_default_six,
    test_period_field_default_thirty,
    test_code_accent_color_vlm,
    test_code_large_font_vlm,
    test_code_grouped_vlm,
    test_eight_wider_than_six_vlm,
]

if __name__ == "__main__":
    run_suite(TESTS, "computation")