#!/bin/bash
# Green-light check: re-runs both display regression tests AND the rate-control
# drift test, from the Blu-ray. ~2 min. Run from the repo root. Any non-zero
# exit means something drifted.
set -e
cd "$(dirname "$0")/../.."
[ -d /media/reala-misaki/BDROM ] || {
  echo "Blu-ray not mounted. udisksctl loop-setup -r -f DRAGONS_LAIR.iso"; exit 2; }

python3 tools/encoder/extract.py 00020 tmp/fr_00020 12 crop
mkdir -p tmp/snap_verify tmp/snap256

run() {  # run <script> <snapdir>
  rm -f "tmp/$2/x68000"/*.png
  ( cd tmp && SDL_VIDEODRIVER=dummy timeout -k 5 120 mame x68000 -bios ipl10 \
      -video soft -window -sound none -nothrottle -plugins \
      -autoboot_script "../tools/bench/$1" \
      -snapshot_directory "./$2" -snapview native -seconds_to_run 6 >"$2.log" 2>&1 )
}

echo "--- session 3: 768-wide IPL timing (FINDINGS 22) ---"
python3 tools/bench/prep_frame.py tmp/fr_00020 tmp/frame.bin 0
run show_frame.lua snap_verify
python3 tools/bench/verify_frame.py

echo "--- session 4: real 256x256 mode (FINDINGS 23) ---"
python3 tools/bench/prep_frame.py tmp/fr_00020 tmp/frame256.bin 0 --reserve-black
run show_frame256.lua snap256
python3 tools/bench/verify_frame256.py

echo "--- session 6: rate-control drift (FINDINGS 26/27) ---"
# The codec is temporally recursive, so a rate controller can report quality for
# a reconstruction no decoder will ever produce -- silently. This asserts that a
# decoder replaying the emitted stream rebuilds exactly what the encoder
# recorded. ~55 s, nearly all of it k-means in H.build.
[ -d tmp/fr_singe ] || python3 tools/encoder/extract.py 00223 tmp/fr_singe 12 crop 539.4 10.0
# NOT piped into tail: a pipeline's exit status is the last command's, which
# would swallow the failure this whole script exists to catch.
python3 tools/analysis/09_ratectl_drift.py > tmp/drift_check.log 2>&1 \
  || { cat tmp/drift_check.log; exit 1; }
tail -9 tmp/drift_check.log

echo "--- session 7: display-path coherency (FINDINGS 28.1) ---"
# 10_pathmix_drift.py is a COUNTEREXAMPLE, kept runnable: the dual-path plan of
# FINDINGS 24.5/25.6 must still be shown to corrupt frames, and the strategy the
# player actually uses must still be clean. A green light here means the reason
# decode.s has one display path is still demonstrable, not just asserted.
python3 tools/analysis/10_pathmix_drift.py > tmp/pathmix.log 2>&1 \
  && { echo "FAIL: the dual-path plan no longer reproduces its own defect"; \
       cat tmp/pathmix.log; exit 1; }
grep -a "frames displaying pixels" tmp/pathmix.log
python3 tools/analysis/10_pathmix_drift.py --fix direct > tmp/pathmix_direct.log 2>&1 \
  || { echo "FAIL: direct-to-GVRAM is no longer coherent"; cat tmp/pathmix_direct.log; exit 1; }

echo "--- session 7: 68000 decoder is pixel-exact (FINDINGS 28) ---"
# The strongest display test in the tree: 120 frames decoded in sequence by
# 68000 code, every block mode, full temporal recursion. A SKIP block is a claim
# about the previous frame still being on screen, so the last frame is only
# right if all 120 were.
# The gate container is the CURRENT default encode: scsi (the only profile left
# after session 9 dropped sasi on capacity, FINDINGS 32), cost-aware mode
# decision on, DLX2 4-byte-aligned records. It is also the heavier stream --
# 43% RAW against sasi's 10% -- so it exercises the decoder harder than the
# session-7 container this gate used to run on.
DLX=tmp/rc_fr_singe_scsi_cpufit.dlx
[ -f "$DLX" ] || python3 tools/encoder/encode.py tmp/fr_singe "$DLX" --profile scsi
python3 tools/bench/prep_dlx.py "$DLX" > tmp/prep_dlx.log
# The rig loads the whole stream into a 2 MB machine, so a scsi window does not
# fit and prep_dlx truncates it. Verify against exactly the prefix it emitted.
NF=$(sed -n 's/.*nframes=\([0-9]*\),.*/\1/p' tmp/decode_meta.lua)
grep -a "TRUNCATED" tmp/prep_dlx.log || true
tools/vasm/vasmm68k_mot -Fbin -o tmp/decode.bin src/player/decode.s > /dev/null
mkdir -p tmp/snap_decode
rm -f tmp/snap_decode/x68000/*.png
# stdbuf -oL: a FILE is block-buffered too, so without it a long MAME run is
# unobservable until it exits and a run that is merely finishing looks exactly
# like one that is wedged (FINDINGS 34.1).
# -seconds_to_run must cover the WHOLE sequential pass. The scsi container is
# 2.7x the payload of the session-7 one this gate used to run on, and at 20 s
# the pass was truncated -- MAME exited mid-decode and verify_decode.py then
# compared a partially drawn screen and reported 49,005 differing pixels, which
# reads as a decoder bug and is not one.
( cd tmp && DLX_VERIFY_ONLY=1 SDL_VIDEODRIVER=dummy stdbuf -oL timeout -k 5 300 mame x68000 \
    -bios ipl10 -ramsize 2M -video soft -window -sound none -nothrottle -plugins \
    -autoboot_script ../tools/bench/decode.lua \
    -snapshot_directory ./snap_decode -snapview native -seconds_to_run 45 \
    > decode_check.log 2>&1 )
# A truncated run must fail as a truncated run. Without this the only symptom is
# a pixel diff against a half-drawn frame.
grep -q "snapshot taken" tmp/decode_check.log || {
  echo "FAIL: the 68000 sequential pass did not complete -- no snapshot marker."
  echo "      Raise -seconds_to_run; the pass needs the whole container decoded."
  tail -5 tmp/decode_check.log; exit 1; }
python3 tools/bench/verify_decode.py "$DLX" --nframes "$NF"

echo "--- session 10: the same decode on a second CPU core (FINDINGS 37) ---"
# A SECOND emulator, and the cheapest strong test in the tree: seconds, no MAME,
# no ROMs. px68k's C68K core has its own cycle table and its own memory model,
# so a pass here says decode.s is pixel-exact under two independent cores and
# that the harness's byte-swapped RAM / high-byte-discarding GVRAM is right --
# which is what licenses its cycle and bus numbers.
# Skipped rather than failed when px68k is not checked out: it is an external
# tree, not part of this repo.
PX68K=${PX68K:-$HOME/src/px68k}
if [ -f "$PX68K/m68000/c68k.c" ]; then
  make -s -C tools/bench/c68k PX68K="$PX68K"
  bash tools/bench/c68k/run.sh tmp/c68k_frames.csv 2>tmp/c68k.log
  grep -a "sequential pass" tmp/c68k.log
  python3 tools/bench/c68k/verify_c68k.py "$DLX" --nframes "$NF"

  echo "--- session 10: the bus model still matches the machine (FINDINGS 38) ---"
  # 15_bus_occupancy.py derives instruction prefetch, which no emulator here can
  # report, and validates itself against the DATA accesses the harness counts.
  # If that check ever stops holding, every bus figure in FINDINGS 38/39 is
  # unfounded -- so it is a gate, not a report.
  python3 tools/analysis/15_bus_occupancy.py "$DLX" | sed -n '3,7p'
else
  echo "  SKIPPED: no px68k at $PX68K (set PX68K= to point at a checkout)"
fi

echo "ALL GREEN"