From bb257f52cef54e13418ccf564dd1758a69d8d566 Mon Sep 17 00:00:00 2001
From: Abdessamad Derraz <3028866+Abdess@users.noreply.github.com>
Date: Sun, 29 Mar 2026 13:21:08 +0200
Subject: [PATCH] feat: add export_native.py CLI

---
 scripts/export_native.py | 113 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 scripts/export_native.py

diff --git a/scripts/export_native.py b/scripts/export_native.py
new file mode 100644
index 00000000..416df180
--- /dev/null
+++ b/scripts/export_native.py
@@ -0,0 +1,113 @@
+"""Export truth data to native platform formats."""
+
+from __future__ import annotations
+
+import argparse
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+
+import yaml
+
+from common import list_registered_platforms, load_platform_config
+from exporter import discover_exporters
+
+
+OUTPUT_FILENAMES: dict[str, str] = {
+    "retroarch": "System.dat",
+    "batocera": "batocera-systems",
+    "recalbox": "es_bios.xml",
+    "retrobat": "batocera-systems.json",
+}
+
+
+def output_filename(platform: str) -> str:
+    """Return the native output filename for a platform."""
+    return OUTPUT_FILENAMES.get(platform, f"{platform}_bios.dat")
+
+
+def run(
+    platforms: list[str],
+    truth_dir: str,
+    output_dir: str,
+    platforms_dir: str,
+) -> int:
+    """Export truth to native formats, return exit code."""
+    exporters = discover_exporters()
+    output_path = Path(output_dir)
+    output_path.mkdir(parents=True, exist_ok=True)
+
+    errors = 0
+
+    for platform in sorted(platforms):
+        exporter_cls = exporters.get(platform)
+        if not exporter_cls:
+            print(f"  SKIP {platform}: no exporter available")
+            continue
+
+        truth_file = Path(truth_dir) / f"{platform}.yml"
+        if not truth_file.exists():
+            print(f"  SKIP {platform}: {truth_file} not found")
+            continue
+
+        with open(truth_file) as f:
+            truth_data = yaml.safe_load(f) or {}
+
+        scraped: dict | None = None
+        try:
+            scraped = load_platform_config(platform, platforms_dir)
+        except (FileNotFoundError, OSError):
+            pass
+
+        dest = str(output_path / output_filename(platform))
+        exporter = exporter_cls()
+        exporter.export(truth_data, dest, scraped_data=scraped)
+
+        issues = exporter.validate(truth_data, dest)
+        if issues:
+            print(f"  WARN {platform}: {len(issues)} validation issue(s)")
+            for issue in issues:
+                print(f"       {issue}")
+            errors += 1
+        else:
+            print(f"  OK   {platform} -> {dest}")
+
+    return 1 if errors else 0
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(
+        description="Export truth data to native platform formats.",
+    )
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument("--all", action="store_true", help="export all platforms")
+    group.add_argument("--platform", help="export a single platform")
+    parser.add_argument(
+        "--output-dir", default="dist/upstream", help="output directory",
+    )
+    parser.add_argument(
+        "--truth-dir", default="dist/truth", help="truth YAML directory",
+    )
+    parser.add_argument(
+        "--platforms-dir", default="platforms", help="platform configs directory",
+    )
+    parser.add_argument(
+        "--include-archived", action="store_true",
+        help="include archived platforms",
+    )
+    args = parser.parse_args()
+
+    if args.all:
+        platforms = list_registered_platforms(
+            args.platforms_dir, include_archived=args.include_archived,
+        )
+    else:
+        platforms = [args.platform]
+
+    code = run(platforms, args.truth_dir, args.output_dir, args.platforms_dir)
+    sys.exit(code)
+
+
+if __name__ == "__main__":
+    main()