from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
FILES = {
    "AgrarianInventoryComponent.h": ROOT / "Source" / "AgrarianGame" / "AgrarianInventoryComponent.h",
    "AgrarianInventoryComponent.cpp": ROOT / "Source" / "AgrarianGame" / "AgrarianInventoryComponent.cpp",
    "AgrarianGamePlayerController.h": ROOT / "Source" / "AgrarianGame" / "AgrarianGamePlayerController.h",
    "AgrarianGamePlayerController.cpp": ROOT / "Source" / "AgrarianGame" / "AgrarianGamePlayerController.cpp",
    "TechnicalDesignDocument.md": ROOT / "Docs" / "TechnicalDesignDocument.md",
    "InventoryDataModel.md": ROOT / "Docs" / "InventoryDataModel.md",
    "AGRARIAN_DEVELOPMENT_ROADMAP.md": ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md",
}

EXPECTED = {
    "AgrarianInventoryComponent.h": [
        "bool SplitStackByIndex(int32 StackIndex, int32 SplitQuantity);",
        "void ServerSplitStackByIndex(int32 StackIndex, int32 SplitQuantity);",
    ],
    "AgrarianInventoryComponent.cpp": [
        "bool UAgrarianInventoryComponent::SplitStackByIndex",
        "Items.IsValidIndex(StackIndex)",
        "Items.Num() >= MaxSlots",
        "SplitQuantity >= SourceStack.Quantity",
        "FAgrarianItemStack SplitStack = SourceStack;",
        "SplitStack.Quantity = SplitQuantity;",
        "SourceStack.Quantity -= SplitQuantity;",
        "Items.Add(SplitStack);",
        "BroadcastInventoryChanged();",
        "void UAgrarianInventoryComponent::ServerSplitStackByIndex_Implementation",
    ],
    "AgrarianGamePlayerController.h": [
        "void AgrarianSplitStack(int32 StackIndex, int32 SplitQuantity);",
        "void ServerAgrarianSplitStack(int32 StackIndex, int32 SplitQuantity);",
    ],
    "AgrarianGamePlayerController.cpp": [
        "void AAgrarianGamePlayerController::AgrarianSplitStack(int32 StackIndex, int32 SplitQuantity)",
        "Usage: AgrarianSplitStack <StackIndex> <SplitQuantity>",
        "ServerAgrarianSplitStack(StackIndex, SplitQuantity);",
        "void AAgrarianGamePlayerController::ServerAgrarianSplitStack_Implementation",
        "InventoryComponent->SplitStackByIndex(StackIndex, SplitQuantity)",
        "Split %d items from stack %d.",
    ],
    "TechnicalDesignDocument.md": [
        "`AgrarianSplitStack StackIndex SplitQuantity`",
        "creates a separate inventory slot",
        "does not re-merge",
    ],
    "InventoryDataModel.md": [
        "Stack splitting:",
        "server moves a requested quantity into a new stack when slots",
    ],
    "AGRARIAN_DEVELOPMENT_ROADMAP.md": [
        "[x] Add stack splitting.",
    ],
}


def main():
    missing = []
    for label, path in FILES.items():
        text = path.read_text(encoding="utf-8")
        for snippet in EXPECTED[label]:
            if snippet not in text:
                missing.append(f"{label}: {snippet}")

    if missing:
        raise RuntimeError("Stack splitting verification failed: " + "; ".join(missing))

    print("Agrarian stack splitting verification complete.")


if __name__ == "__main__":
    main()