#!/usr/bin/env python3
"""Validate MVP wildlife performance-limit wiring."""

from pathlib import Path
import sys

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


def read(relative_path: str) -> str:
    path = ROOT / relative_path
    if not path.exists():
        raise AssertionError(f"Missing required file: {relative_path}")
    return path.read_text(encoding="utf-8")


def require(content: str, needle: str, context: str) -> None:
    if needle not in content:
        raise AssertionError(f"Missing {needle!r} in {context}")


def main() -> int:
    errors: list[str] = []
    checks = {
        "Source/AgrarianGame/AgrarianWildlifeBase.h": [
            "bEnablePerformanceLimits",
            "FullUpdateRadius",
            "FarUpdateIntervalSeconds",
            "ShouldRunServerThink",
            "GetNearestPlayerDistanceSquared",
            "ServerThinkAccumulator",
        ],
        "Source/AgrarianGame/AgrarianWildlifeBase.cpp": [
            "ShouldRunServerThink(DeltaSeconds)",
            "ServerThinkAccumulator += DeltaSeconds",
            "FMath::Square(FullUpdateRadius)",
            "FarUpdateIntervalSeconds",
            "SetActorTickEnabled(false)",
            "TNumericLimits<float>::Max()",
        ],
        "Source/AgrarianGame/AgrarianWildlifeSpawnManager.h": [
            "MaxActiveWildlife",
        ],
        "Source/AgrarianGame/AgrarianWildlifeSpawnManager.cpp": [
            "GetActiveWildlifeCount() >= MaxActiveWildlife",
        ],
        "AGRARIAN_DEVELOPMENT_ROADMAP.md": [
            "[x] Add performance limits.",
            "nearby wildlife updates normally",
            "far wildlife batches server",
        ],
        "Docs/TechnicalDesignDocument.md": [
            "Wildlife Performance Limits",
            "FullUpdateRadius",
            "FarUpdateIntervalSeconds",
            "MaxActiveWildlife",
        ],
    }

    for relative_path, needles in checks.items():
        try:
            content = read(relative_path)
            for needle in needles:
                require(content, needle, relative_path)
        except AssertionError as exc:
            errors.append(str(exc))

    if errors:
        for error in errors:
            print(f"ERROR: {error}", file=sys.stderr)
        return 1

    print("PASS: wildlife performance limits are wired and documented.")
    return 0


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