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#!/usr/bin/env python3
"""COMPUTATION lane — Vector Pinball.

CORE FUNCTION = the scoring engine: launching the ball + it striking
bumpers/targets is the INPUT; the score number rising from 0 is the OUTPUT. That
number is drawn on a custom `scoreView` canvas and NEVER reaches the view tree,
so the score assertions are legitimately VLM. Scores are NONDETERMINISTIC, so we
assert value PROPERTIES that are still specific and falsifiable (== 0 at start,
> 0 after play, monotonic within a ball, a comma-formatted rendering, yellow /
top-center / large-font rendering) — never an exact number. Two tree-observable
computed outputs are also asserted with real values: the Line width numeric
round-trip (type N -> echoed N) and the High-Scores "Last Score:" == top
score-row identity; the end-of-game bar==Last-Score identity is cross-checked on
the VLM track.

The top bar is a ROTATING banner: it shows the score most of the time but
interrupts it with transient yellow status text ("Ball 3", "2x Multiplier",
"Ball Saved", "Touch to start"). A single probe→assert pair is therefore racy, so
every numeric-bar assertion first waits for TWO consecutive numeric reads (no
banner cycling) before recording. The transient on-field floating "+points" popup
is genuinely NOT capturable on demand (a single screencap catches it ~1 time in
8 on this emulator), so it is NOT asserted — its VLM slot is taken by the
reliable end-of-game identity/colour checks.

This module is the sole owner of jump_kind="value".
"""
import os
import re
import sys
import time

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from android_testgen_kit import *  # noqa: F403,F401

# A bare score row ("56,400") vs the labelled "Last Score: 56,400" row.
NUM_RE = re.compile(r"[0-9][0-9,]*")


# ── Play helpers ────────────────────────────────────────────────────────────
# The playfield/flippers are canvas-drawn (no tree nodes), so taps to PLAY are
# derived from get_screen_info() — never a hardcoded pixel literal, and never
# asserted-on. This is the only legitimate coordinate use (recon-verified).
def _play_taps(rounds=6):
    """Launch the ball and work the flippers/bumpers for `rounds` bursts."""
    s = get_screen_info()
    w, h = s["width"], s["height"]
    launch_x, launch_y = int(w * 0.5), int(h * 0.55)
    flip_l_x, flip_l_y = int(w * 0.28), int(h * 0.85)
    flip_r_x, flip_r_y = int(w * 0.72), int(h * 0.85)
    bump_x, bump_y = int(w * 0.65), int(h * 0.40)
    for _ in range(rounds):
        tap(launch_x, launch_y)
        time.sleep(0.4)
        tap(flip_l_x, flip_l_y)
        time.sleep(0.15)
        tap(flip_r_x, flip_r_y)
        time.sleep(0.3)
        tap(bump_x, bump_y)
        time.sleep(0.2)


def _vlm_read_number(image_path):
    """Ask the VLM to read the top score-bar number; return an int or None.

    Returns None when the bar shows STATUS text (Ball Saved / 2x Multiplier /
    Touch to start / etc.) rather than a numeric score.
    """
    ans = call_vlm(image_path, "Read the top bar of this pinball game. If the top "
                   "bar shows WORDS instead of a number (for example 'Ball 3', "
                   "'2x Multiplier', 'Ball Saved' or 'Touch to start'), reply with "
                   "the single word NONE. Otherwise reply with ONLY the digits (no "
                   "commas, no words).")
    if not ans:
        return None
    if "NONE" in ans.upper():
        return None
    digits = re.sub(r"[^0-9]", "", ans)
    return int(digits) if digits else None


def _wait_for_stable_numeric_bar(min_val=1, tries=8):
    """Settle the top bar onto a RESTING numeric frame reading >= `min_val`.

    Requires TWO consecutive probe reads (spaced ~0.6s) that BOTH show a number
    >= min_val — which means no banner is currently cycling — then returns at
    once, so the caller's vlm_assert lands on the still-resting numeric bar.

    Returns the last numeric value seen (int) or None. When no ball is alive it
    nudges the flippers/bumpers to keep one in play.
    """
    shot = os.path.join(RESULTS_DIR, "screenshots", "_bar_probe.png")
    last = None
    prev_ok = False
    for _ in range(tries):
        if not prev_ok:
            _play_taps(2)          # keep a ball alive if a banner was showing
        time.sleep(2.0)            # let any active status banner expire
        if not screencap(shot):
            continue
        val = _vlm_read_number(shot)
        if val is not None:
            last = val
        if val is not None and val >= min_val:
            if prev_ok:
                return val
            prev_ok = True
            time.sleep(0.6)        # short gap, immediately re-confirm
            if screencap(shot):
                v2 = _vlm_read_number(shot)
                if v2 is not None:
                    last = v2
                if v2 is not None and v2 >= min_val:
                    return v2
            prev_ok = False
        else:
            prev_ok = False
    return last


def and_start_game():
    """menu -> gameplay (surface +1). Returns the gameplay tree, or None."""
    restart_app()
    if not wait_for_foreground(10):
        return None
    sg = node_by_id(ui(), "startGameButton")
    if sg is None:
        return None
    before = and_showing()
    tap_node(sg)
    time.sleep(2)
    after = and_showing()
    # gameplay proven by tree flip: pauseIcon appears, START GAME disappears.
    if not and_reach(before, after, target="pauseIcon", source="START GAME"):
        return None
    and_enter("gameplay")
    return ui()


def and_start_game_clean():
    """Like and_start_game but from wiped data (fresh high-score table)."""
    clear_data()
    launch_app()
    if not wait_for_foreground(10):
        return None
    sg = node_by_id(ui(), "startGameButton")
    if sg is None:
        return None
    tap_node(sg)
    time.sleep(2)
    and_enter("gameplay")
    return ui()


def and_start_game_on_next_table(n_next=1):
    """menu -> switch table `n_next` times -> gameplay. Returns tree or None."""
    restart_app()
    if not wait_for_foreground(10):
        return None
    for _ in range(n_next):
        nxt = node_by_id(ui(), "nextTableButton")
        if nxt is None:
            return None
        tap_node(nxt)
        time.sleep(1)
    sg = node_by_id(ui(), "startGameButton")
    if sg is None:
        return None
    tap_node(sg)
    time.sleep(2)
    and_enter("gameplay")
    return ui()


def and_reach_high_scores_after_game():
    """Play a full game, End Game, then open the High Scores panel (surfaces).

    Returns the high-score panel tree, or None. depth accrues through gameplay
    and the panel.
    """
    if and_start_game_clean() is None:
        return None
    _play_taps(6)
    # Pause, then End Game -> back to fresh menu.
    pi = node_by_id(ui(), "pauseIcon")
    if pi is None:
        return None
    tap_node(pi)
    time.sleep(1)
    eg = node_by_id(ui(), "endGameButton")
    if eg is None:
        return None
    tap_node(eg)
    time.sleep(2)
    # Open the High Scores panel.
    hs = node_by_id(ui(), "highScoreButton")
    if hs is None:
        return None
    if not and_reach_surface(hs, target="highScorePanel", source="START GAME"):
        return None
    return ui()


def and_enter_line_width_dialog():
    """menu -> Preferences -> Line width dialog (surfaces +2).

    Returns the sole EditText node in the open dialog, or None.
    """
    restart_app()
    if not wait_for_foreground(10):
        return None
    pref = node_by_id(ui(), "preferencesButton")
    if pref is None:
        return None
    tap_node(pref)
    time.sleep(1.5)
    and_enter("preferences")
    row = scroll_into_view("Line width")
    if row is None:
        return None
    tap_node(row)
    time.sleep(1)
    and_enter("line_width_dialog")
    et = find_by_class(ui(), "EditText")
    return et[0] if et else None


# ── VLM: score starts at exactly 0 ──────────────────────────────────────────
@and_test(expects=("computation_score_zero_at_start_vlm",))
def test_score_zero_at_start():
    if and_start_game() is None:
        record("computation_score_zero_at_start_vlm", False,
               "setup_failed: could not enter gameplay", depth=1,
               jump_kind="value", tag="content")
        return
    vlm_assert("computation_score_zero_at_start",
               "Look at the top score bar of this pinball game. Does the score "
               "read exactly 0 (zero)?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="content")


# ── VLM (flagship): score becomes > 0 after ball activity ────────────────────
@and_test(expects=("computation_score_positive_after_play_vlm",))
def test_score_positive_after_play():
    if and_start_game() is None:
        record("computation_score_positive_after_play_vlm", False,
               "setup_failed: could not enter gameplay", depth=1,
               jump_kind="value", tag="content")
        return
    _play_taps(6)
    # Settle onto a resting numeric-bar frame (not a status banner) so the
    # recorded assertion is honest and non-flaky. Replay if the ball drained.
    val = _wait_for_stable_numeric_bar(min_val=1)
    if not (val and val > 0):
        _play_taps(6)
        _wait_for_stable_numeric_bar(min_val=1)
    vlm_assert("computation_score_positive_after_play",
               "Look at the top score bar of this pinball game. Is the displayed "
               "score a number strictly greater than zero (i.e. NOT 0)?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="content")


# ── VLM: score is MONOTONIC within a single ball's play ──────────────────────
@and_test(expects=("computation_score_monotonic_vlm",))
def test_score_monotonic():
    if and_start_game() is None:
        record("computation_score_monotonic_vlm", False,
               "setup_failed: could not enter gameplay", depth=1,
               jump_kind="value", tag="content")
        return
    _play_taps(3)
    first_val = _wait_for_stable_numeric_bar(min_val=1)
    _play_taps(4)
    # Settle onto a resting numeric frame again, then compare the CURRENT bar
    # against the earlier read.
    _wait_for_stable_numeric_bar(min_val=(first_val or 0) + 1)
    baseline = first_val if (first_val is not None) else 0
    vlm_assert("computation_score_monotonic",
               "Look at the top score bar of this pinball game. Is the displayed "
               f"score a number GREATER than {baseline}?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="content")


# ── VLM: end-of-game identity — the score bar equals the panel 'Last Score' ──
# (The transient on-field "+points" popup is not capturable on demand, so this
#  reliable computed-identity check takes its VLM slot.)
@and_test(expects=("computation_endgame_bar_matches_lastscore_vlm",))
def test_endgame_bar_matches_lastscore():
    if and_reach_high_scores_after_game() is None:
        record("computation_endgame_bar_matches_lastscore_vlm", False,
               "setup_failed: could not play a game and open High Scores", depth=2,
               jump_kind="value", tag="content")
        return
    vlm_assert("computation_endgame_bar_matches_lastscore",
               "This screenshot shows a pinball High Scores dialog. The thin status "
               "strip across the very top of the screen shows a number, and inside "
               "the dialog there is a 'Last Score:' line with a number. Are those two "
               "numbers equal to each other?",
               RESULTS_DIR, depth=2, jump_kind="value", tag="content")


# ── VLM (fine, color): the end-of-game score bar text is yellow ───────────────
@and_test(expects=("computation_highscore_bar_yellow_vlm",))
def test_highscore_bar_yellow():
    if and_reach_high_scores_after_game() is None:
        record("computation_highscore_bar_yellow_vlm", False,
               "setup_failed: could not play a game and open High Scores", depth=2,
               jump_kind="value", tag="color")
        return
    vlm_assert("computation_highscore_bar_yellow",
               "Look at the thin status strip across the very top of this screen "
               "(above the 'High scores' dialog). It contains a short label followed "
               "by a number. Are those characters, INCLUDING the number, rendered in "
               "a YELLOW color?",
               RESULTS_DIR, depth=2, jump_kind="value", tag="color")


# ── VLM (fine, color): the running score in the top bar is yellow ────────────
@and_test(expects=("computation_score_bar_yellow_vlm",))
def test_score_bar_yellow():
    if and_start_game() is None:
        record("computation_score_bar_yellow_vlm", False,
               "setup_failed: could not enter gameplay", depth=1,
               jump_kind="value", tag="color")
        return
    _play_taps(5)
    _wait_for_stable_numeric_bar(min_val=1)
    vlm_assert("computation_score_bar_yellow",
               "Look at the number shown in the top score bar of this pinball "
               "game. Are those score digits rendered in a YELLOW color?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="color")


# ── VLM (fine, size): the score is the prominent large text in the bar ───────
@and_test(expects=("computation_score_large_font_vlm",))
def test_score_large_font():
    if and_start_game() is None:
        record("computation_score_large_font_vlm", False,
               "setup_failed: could not enter gameplay", depth=1,
               jump_kind="value", tag="size")
        return
    _play_taps(5)
    _wait_for_stable_numeric_bar(min_val=1)
    vlm_assert("computation_score_large_font",
               "Look at the top bar of this pinball game. Is the score number "
               "rendered in a LARGE font, clearly larger than the small circular "
               "icons in the corners of the same top bar?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="size")


# ── TREE VALUE: the score is rendered with correct comma thousands-grouping ──
# The running-score canvas bar is a racy VLM target for this (needs a resting
# frame at >= 1000 AND a correct comma read), so this asserts the SAME computed
# formatting off the DETERMINISTIC, tree-readable high-score row instead: after a
# real game the panel shows a bare score row like "3,100". The falsifiable claim
# is proper grouping — well-formed \d{1,3}(,\d{3})* AND a comma present iff the
# value is >= 1000 — so a recreation that renders "3100" (no grouping) fails.
COMMA_GROUP_RE = re.compile(r"[0-9]{1,3}(,[0-9]{3})*")


@and_test(expects=("computation_score_comma_formatted",))
def test_score_comma_formatted():
    n = and_reach_high_scores_after_game()
    if n is None:
        record("computation_score_comma_formatted", False,
               "setup_failed: could not play a game and open High Scores", depth=2,
               jump_kind="value",
               expect="high-score row uses comma grouping (comma iff value>=1000)")
        return
    texts = [x.get("text", "").strip() for x in n if x.get("text", "").strip()]
    rows = [t for t in texts
            if NUM_RE.fullmatch(t) and not t.lower().startswith("last score")]
    if not rows:
        record("computation_score_comma_formatted", False,
               f"feature_missing: no bare numeric score row (texts={texts})",
               depth=2, jump_kind="value",
               expect="high-score row uses comma grouping (comma iff value>=1000)")
        return
    row = rows[0]
    well_formed = COMMA_GROUP_RE.fullmatch(row) is not None
    val = int(row.replace(",", ""))
    comma_iff_big = ("," in row) == (val >= 1000)
    ok = well_formed and comma_iff_big
    record("computation_score_comma_formatted", ok,
           "" if ok else (f"behavior_wrong: score row {row!r} is not correctly "
                          f"comma-grouped (well_formed={well_formed}, "
                          f"comma_iff>=1000={comma_iff_big})"),
           depth=2, jump_kind="value",
           expect=f"score row {row!r}: \\d{{1,3}}(,\\d{{3}})* with comma iff >=1000")


# ── VLM: engine runs PER-TABLE — table 2 starts at 0 ─────────────────────────
@and_test(expects=("computation_table2_zero_at_start_vlm",))
def test_table2_zero_at_start():
    if and_start_game_on_next_table(1) is None:
        record("computation_table2_zero_at_start_vlm", False,
               "setup_failed: could not switch table and start game", depth=1,
               jump_kind="value", tag="content")
        return
    vlm_assert("computation_table2_zero_at_start",
               "Look at the top score bar of this pinball game. Does the score "
               "read exactly 0 (zero)?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="content")


# ── VLM: engine runs PER-TABLE — table 2 goes > 0 after play ─────────────────
@and_test(expects=("computation_table2_positive_after_play_vlm",))
def test_table2_positive_after_play():
    if and_start_game_on_next_table(1) is None:
        record("computation_table2_positive_after_play_vlm", False,
               "setup_failed: could not switch table and start game", depth=1,
               jump_kind="value", tag="content")
        return
    _play_taps(6)
    val = _wait_for_stable_numeric_bar(min_val=1)
    if not (val and val > 0):
        _play_taps(6)
        _wait_for_stable_numeric_bar(min_val=1)
    vlm_assert("computation_table2_positive_after_play",
               "Look at the top score bar of this pinball game. Is the displayed "
               "score a number strictly greater than zero (i.e. NOT 0)?",
               RESULTS_DIR, depth=1, jump_kind="value", tag="content")


# ── VLM: at end-of-game the achieved total is reflected (High Score bar) ─────
@and_test(expects=("computation_endgame_total_reflected_vlm",))
def test_endgame_total_reflected():
    if and_reach_high_scores_after_game() is None:
        record("computation_endgame_total_reflected_vlm", False,
               "setup_failed: could not play a game and open High Scores", depth=2,
               jump_kind="value", tag="content")
        return
    # With the High Scores panel open the top bar reads "High Score: <total>".
    vlm_assert("computation_endgame_total_reflected",
               "Look at the very top bar of this screen (it starts with 'High "
               "Score:'). Does it show a number that is greater than zero?",
               RESULTS_DIR, depth=2, jump_kind="value", tag="content")


# ── TREE VALUE: computed identity — 'Last Score:' == the score-row number ────
@and_test(expects=("computation_last_score_matches_row",))
def test_last_score_matches_row():
    n = and_reach_high_scores_after_game()
    if n is None:
        record("computation_last_score_matches_row", False,
               "setup_failed: could not play a game and open High Scores", depth=2,
               jump_kind="value",
               expect="'Last Score: N' number == the numeric high-score row N")
        return
    texts = [x.get("text", "").strip() for x in n if x.get("text", "").strip()]
    last_rows = [t for t in texts if t.lower().startswith("last score")]
    # Bare numeric rows: a score row like "56,400" that is NOT the labelled one.
    num_rows = [t for t in texts
                if NUM_RE.fullmatch(t) and not t.lower().startswith("last score")]
    if not last_rows:
        record("computation_last_score_matches_row", False,
               f"feature_missing: no 'Last Score:' row (texts={texts})", depth=2,
               jump_kind="value",
               expect="'Last Score: N' number == the numeric high-score row N")
        return
    if not num_rows:
        record("computation_last_score_matches_row", False,
               f"feature_missing: no bare numeric score row (texts={texts})",
               depth=2, jump_kind="value",
               expect="'Last Score: N' number == the numeric high-score row N")
        return
    last_num = re.sub(r"[^0-9]", "", NUM_RE.search(last_rows[0]).group(0))
    row_nums = {re.sub(r"[^0-9]", "", r) for r in num_rows}
    ok = last_num in row_nums and last_num != ""
    record("computation_last_score_matches_row", ok,
           "" if ok else (f"behavior_wrong: Last Score {last_num!r} not among "
                          f"score rows {row_nums!r}"),
           depth=2, jump_kind="value",
           expect=f"'Last Score:' number ({last_num}) equals a high-score row")


# ── TREE VALUE: Line width round-trip — type 12 -> echoed 12 ─────────────────
@and_test(expects=("computation_linewidth_roundtrip_12",))
def test_linewidth_roundtrip_12():
    et = and_enter_line_width_dialog()
    if et is None:
        record("computation_linewidth_roundtrip_12", False,
               "setup_failed: Line width dialog / EditText unreachable", depth=2,
               jump_kind="value", expect="Line width EditText echoes '12'")
        return
    # Type the value and read it straight back out of a fresh dump.
    type_text(et, "12")
    fresh = find_by_class(ui(), "EditText")
    got = (fresh[0].get("text", "") if fresh else "").strip()
    got_digits = re.sub(r"[^0-9]", "", got)
    ok = got_digits == "12"
    record("computation_linewidth_roundtrip_12", ok,
           "" if ok else f"behavior_wrong: EditText shows {got!r}, expected '12'",
           depth=2, jump_kind="value", expect="Line width EditText echoes '12'")


# ── TREE VALUE: Line width accepts 0 (the documented default) -> echoed 0 ────
@and_test(expects=("computation_linewidth_roundtrip_0",))
def test_linewidth_roundtrip_0():
    et = and_enter_line_width_dialog()
    if et is None:
        record("computation_linewidth_roundtrip_0", False,
               "setup_failed: Line width dialog / EditText unreachable", depth=2,
               jump_kind="value", expect="Line width EditText echoes '0'")
        return
    type_text(et, "0")
    fresh = find_by_class(ui(), "EditText")
    got = (fresh[0].get("text", "") if fresh else "").strip()
    got_digits = re.sub(r"[^0-9]", "", got)
    ok = got_digits == "0"
    record("computation_linewidth_roundtrip_0", ok,
           "" if ok else f"behavior_wrong: EditText shows {got!r}, expected '0'",
           depth=2, jump_kind="value", expect="Line width EditText echoes '0'")


TESTS = [
    test_score_zero_at_start,
    test_score_positive_after_play,
    test_score_monotonic,
    test_endgame_bar_matches_lastscore,
    test_highscore_bar_yellow,
    test_score_bar_yellow,
    test_score_large_font,
    test_score_comma_formatted,
    test_table2_zero_at_start,
    test_table2_positive_after_play,
    test_endgame_total_reflected,
    test_last_score_matches_row,
    test_linewidth_roundtrip_12,
    test_linewidth_roundtrip_0,
]

if __name__ == "__main__":
    if not device_online():
        print("Device offline — aborting; a whole module of setup_failed usually "
              "means the emulator/tunnel dropped, not that the app is broken.")
    run_suite(TESTS, "computation")