#!/usr/bin/env bash
# Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
# See LICENSE.md for license information.
# SPDX-License-Identifier: MIT
#
# verify-amiga-display.sh - the Amiga's present, checked on the planes the
# copper shows. UBER's golden hashes are of the stage; a present that leaves
# stale rows on screen passes them. The display flips between two plane
# sets: each present draws into the one not shown, which holds the frame
# before last, from the union of two frames' dirty bands
# (src/amiga/presentScan.s). UBERPROB (UBER with UBER_PROBE,
# make/examples.mk) runs its Amiga display row (op_probePresentPageSum): a
# battery of draws, each presented and the shown planes summed against the
# stage's (jlAmigaProbePresentPageSums in src/amiga/hal.c). It must PASS.
#
# Usage:   scripts/verify-amiga-display.sh
# Exit:    0 PASS, 1 FAIL
# Requires: FS-UAE and a Kickstart (install.sh install emulator:amiga); it
#           builds the probe (make -f make/amiga.mk amiga-uberprob).

set -uo pipefail

repo=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
label=verify-amiga-display
dir=$repo/build/amiga/probe

if ! make -s -f "$repo/make/amiga.mk" amiga-uberprob; then
    echo "$label: FAIL - building the UBERPROB failed" >&2
    exit 1
fi
rm -f "$dir/joeylog.txt"
BENCH_PROG=Uberprob BENCH_BIN_DIR="$dir" TIMEOUT="${TIMEOUT:-300}" "$repo/scripts/bench-amiga.sh" > /dev/null 2>&1
line=$(grep "UBER-PROBE: presentPageSum" "$dir/joeylog.txt" 2>/dev/null)
if [[ "$line" == *"presentPageSum PASS"* ]]; then
    echo "$label: PASS - ${line#UBER-PROBE: }"
    exit 0
fi
echo "$label: FAIL - ${line:-no presentPageSum line in its log}" >&2
exit 1