#!/usr/bin/env python3
"""Write a first-stage ROI validation report.

This pass records why ROI cannot pass yet: no Cocos-produced screenshot exists
because the Cocos 4 alpha CLI is blocked by a native ABI mismatch.
"""

from __future__ import annotations

import json
from datetime import datetime, timezone
from pathlib import Path


PROJECT = Path(__file__).resolve().parents[1]


def main() -> None:
    out_dir = PROJECT / "artifacts/visual_compare"
    out_dir.mkdir(parents=True, exist_ok=True)
    report = {
        "generated_at": datetime.now(timezone.utc).isoformat(),
        "module": "main_scene_first_milestone",
        "status": "blocked",
        "rois": ["world_static", "land_area", "decor_area", "bottom_buttons"],
        "reason": "Cocos-produced screenshot is unavailable because Cocos 4 alpha CLI build fails on native webgl.node ABI mismatch.",
        "diagnostic_preview": str(PROJECT / "artifacts/canvas_preview/stage1_source_preview.png"),
        "target_thresholds": {
            "static_bitmap_similarity": 0.99,
            "object_center_delta_px": 2,
            "object_size_delta_percent": 1,
        },
    }
    path = out_dir / "stage1_roi_report.json"
    path.write_text(json.dumps(report, ensure_ascii=False, indent=2) + "\n", encoding="utf-8")
    print(path)


if __name__ == "__main__":
    main()