#!/usr/bin/env python3
"""Create the isolated L132 owner snapshot with a native plan for existing FI strate 1."""
from __future__ import annotations

import json
from pathlib import Path


ROOT = Path(__file__).resolve().parents[4]
SOURCE = ROOT / "Standalone/data/owner_world.json"
MANIFEST = ROOT / "Saved/Linux/l132/fixtures/owner-native-fi.world-assembly.json"
LAYOUT = ROOT / "Saved/Linux/l132/fixtures/owner-native-fi.resolved-layout.json"
OUTPUT = ROOT / "Saved/Linux/l132/fixtures/owner_world_native_fi.json"


def main() -> int:
    owner = json.loads(SOURCE.read_text(encoding="utf-8"))
    manifest_text = MANIFEST.read_text(encoding="utf-8").strip()
    layout_text = LAYOUT.read_text(encoding="utf-8").strip()
    manifest = json.loads(manifest_text)
    layout = json.loads(layout_text)
    islands = manifest.get("floating_islands", [])
    native = [row for row in islands if row.get("strate_index") == 1]
    resolved = [row for row in layout.get("strates", [])
                if row.get("strate_index") == 1]
    if len(native) != 1 or len(resolved) != 1:
        raise SystemExit("native FI snapshot must contain exactly one strate-1 island plan/layout")
    if (resolved[0].get("generator_kind") != "FloatingIslands"
            or resolved[0].get("recipe_id") != "FloatingIslands.ClusterField"
            or resolved[0].get("recipe_version") != 8):
        raise SystemExit("resolved strate 1 is not FloatingIslands.ClusterField v8")
    owner["world_assembly"] = manifest
    owner["core_world_assembly_json"] = manifest_text
    owner["resolved_layout_json"] = layout_text
    OUTPUT.parent.mkdir(parents=True, exist_ok=True)
    OUTPUT.write_text(json.dumps(owner, separators=(",", ":")) + "\n", encoding="utf-8")
    print(f"[L132NativeFISnapshot] path={OUTPUT.relative_to(ROOT)} "
          f"islands={len(native[0].get('manifest', {}).get('plan', {}).get('islands', []))} "
          "strate=1 recipe=FloatingIslands.ClusterField/v8 status=PASS")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())