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# app.py
import os
import json
import tempfile
from typing import Dict, Any, Optional, Tuple
import gradio as gr
from replayproof_sim import (
SimConfig,
SimState,
reset_sim,
step_sim,
render_world_image,
render_pov_image,
)
from replayproof_receipts import (
Recorder,
build_receipt_bundle_zip,
verify_receipt_bundle_zip,
replay_from_receipt_bundle_zip,
)
APP_TITLE = "ReplayProof — Agent POV + Verified Replay"
APP_SUB = "Play it. Prove it. Replay it."
def _new_session(
seed: int,
size: int,
walls_pct: float,
coins: int,
hazards: int,
pov_radius: int,
) -> Dict[str, Any]:
cfg = SimConfig(
size=int(size),
walls_pct=float(walls_pct),
coins=int(coins),
hazards=int(hazards),
pov_radius=int(pov_radius),
max_steps=2000,
)
state = reset_sim(cfg, seed=int(seed))
rec = Recorder.new_session(
sim_spec="replayproof-sim-v0",
cfg=cfg.to_dict(),
seed=int(seed),
)
rec.record_event(state=state, action="RESET")
return {"cfg": cfg, "state": state, "rec": rec}
def _render(state: SimState) -> Tuple[Any, Any, str]:
world = render_world_image(state)
pov = render_pov_image(state)
status = (
f"step={state.step} score={state.score} done={state.done} "
f"final_hash={(state.last_state_sha256 or '')[:12]}"
)
return world, pov, status
def _receipt_tail(rec: Recorder, n: int = 25) -> str:
tail = rec.events[-n:]
lines = []
for e in tail:
lines.append(
f"{e['step']:04d} a={e['action']:<6} "
f"state={e['state_sha256'][:12]} event={e['event_sha256'][:12]}"
)
return "\n".join(lines) if lines else ""
def ui_new(seed, size, walls_pct, coins, hazards, pov_radius):
sess = _new_session(seed, size, walls_pct, coins, hazards, pov_radius)
world, pov, status = _render(sess["state"])
receipts = _receipt_tail(sess["rec"])
return sess, world, pov, status, receipts, None
def ui_step(sess: Optional[Dict[str, Any]]):
if not sess:
return sess, None, None, "No session. Click New Session.", ""
cfg: SimConfig = sess["cfg"]
state: SimState = sess["state"]
rec: Recorder = sess["rec"]
if state.done:
world, pov, status = _render(state)
return sess, world, pov, status + " (done)", _receipt_tail(rec)
new_state, action = step_sim(cfg, state)
sess["state"] = new_state
rec.record_event(state=new_state, action=action)
world, pov, status = _render(new_state)
return sess, world, pov, status, _receipt_tail(rec)
def ui_run(sess: Optional[Dict[str, Any]], steps: int):
if not sess:
return sess, None, None, "No session. Click New Session.", ""
cfg: SimConfig = sess["cfg"]
state: SimState = sess["state"]
rec: Recorder = sess["rec"]
n = int(steps)
for _ in range(n):
if state.done:
break
state, action = step_sim(cfg, state)
rec.record_event(state=state, action=action)
sess["state"] = state
world, pov, status = _render(state)
return sess, world, pov, status, _receipt_tail(rec)
def ui_export_bundle(sess: Optional[Dict[str, Any]], include_gif: bool, watermark: bool):
if not sess:
return None, "No session. Create a session first."
cfg: SimConfig = sess["cfg"]
state: SimState = sess["state"]
rec: Recorder = sess["rec"]
out_dir = tempfile.mkdtemp(prefix="replayproof_")
zip_path = os.path.join(out_dir, f"replayproof_bundle_{rec.session_id}.zip")
build_receipt_bundle_zip(
zip_path=zip_path,
recorder=rec,
cfg=cfg,
final_state=state,
include_gif=bool(include_gif),
watermark=bool(watermark),
)
msg = f"Bundle created: {os.path.basename(zip_path)}"
return zip_path, msg
def ui_verify(zip_file):
if zip_file is None:
return "Upload a receipt bundle ZIP."
zip_path = zip_file if isinstance(zip_file, str) else zip_file.name
report = verify_receipt_bundle_zip(zip_path)
return json.dumps(report, indent=2)
def ui_replay(zip_file, export_gif_flag: bool, watermark: bool):
if zip_file is None:
return None, None, "Upload a receipt bundle ZIP."
zip_path = zip_file if isinstance(zip_file, str) else zip_file.name
replay = replay_from_receipt_bundle_zip(
zip_path,
export_gif_flag=bool(export_gif_flag),
watermark=bool(watermark),
)
world = replay.get("world_img")
pov = replay.get("pov_img")
msg = replay.get("message", "")
gif_path = replay.get("gif_path")
return world, pov, (gif_path if gif_path else None), msg
with gr.Blocks(title=APP_TITLE) as demo:
gr.Markdown(
f"# {APP_TITLE}\n"
f"**{APP_SUB}**\n\n"
"Interactive agent POV sandbox with signed, hash-chained receipts. "
"Export a clip + receipt bundle, then verify and replay anywhere."
)
with gr.Row():
seed = gr.Number(value=12345, label="Seed", precision=0)
size = gr.Slider(8, 20, value=12, step=1, label="Grid Size")
walls_pct = gr.Slider(0.0, 0.35, value=0.18, step=0.01, label="Walls %")
coins = gr.Slider(0, 12, value=5, step=1, label="Coins")
hazards = gr.Slider(0, 10, value=4, step=1, label="Hazards")
pov_radius = gr.Slider(2, 6, value=4, step=1, label="POV Radius")
sess_state = gr.State(None)
with gr.Row():
btn_new = gr.Button("New Session", variant="primary")
btn_step = gr.Button("Step")
btn_run_50 = gr.Button("Run 50")
btn_run_250 = gr.Button("Run 250")
with gr.Row():
world_img = gr.Image(label="World View", type="pil")
pov_img = gr.Image(label="Agent POV", type="pil")
status = gr.Textbox(label="Status", value="", interactive=False)
with gr.Tabs():
with gr.Tab("Receipts"):
receipts_box = gr.Textbox(label="Latest receipts (tail)", lines=14, interactive=False)
with gr.Row():
include_gif = gr.Checkbox(value=True, label="Include GIF in bundle")
watermark = gr.Checkbox(value=True, label="Watermark final hash on frames")
btn_export = gr.Button("Download Receipt Bundle (ZIP)", variant="primary")
bundle_file = gr.File(label="Bundle ZIP")
export_msg = gr.Textbox(label="Export message", interactive=False)
with gr.Tab("Verify"):
verify_upload = gr.File(label="Upload receipt bundle ZIP")
btn_verify = gr.Button("Verify Bundle", variant="primary")
verify_report = gr.Textbox(label="Verification report (JSON)", lines=18)
with gr.Tab("Replay"):
replay_upload = gr.File(label="Upload receipt bundle ZIP")
with gr.Row():
replay_export_gif_flag = gr.Checkbox(value=True, label="Export replay GIF")
replay_watermark = gr.Checkbox(value=True, label="Watermark final hash on frames")
btn_replay = gr.Button("Replay From Bundle", variant="primary")
with gr.Row():
replay_world = gr.Image(label="Replayed World", type="pil")
replay_pov = gr.Image(label="Replayed POV", type="pil")
replay_gif = gr.File(label="Replayed GIF (if exported)")
replay_msg = gr.Textbox(label="Replay result", interactive=False)
btn_new.click(
ui_new,
inputs=[seed, size, walls_pct, coins, hazards, pov_radius],
outputs=[sess_state, world_img, pov_img, status, receipts_box, bundle_file],
)
btn_step.click(
ui_step,
inputs=[sess_state],
outputs=[sess_state, world_img, pov_img, status, receipts_box],
)
btn_run_50.click(
lambda s: ui_run(s, 50),
inputs=[sess_state],
outputs=[sess_state, world_img, pov_img, status, receipts_box],
)
btn_run_250.click(
lambda s: ui_run(s, 250),
inputs=[sess_state],
outputs=[sess_state, world_img, pov_img, status, receipts_box],
)
btn_export.click(
ui_export_bundle,
inputs=[sess_state, include_gif, watermark],
outputs=[bundle_file, export_msg],
)
btn_verify.click(
ui_verify,
inputs=[verify_upload],
outputs=[verify_report],
)
btn_replay.click(
ui_replay,
inputs=[replay_upload, replay_export_gif_flag, replay_watermark],
outputs=[replay_world, replay_pov, replay_gif, replay_msg],
)
if __name__ == "__main__":
demo.launch() |