import { Address, beginCell, Cell, Contract, ContractProvider, Sender, toNano, Builder, StateInit } from '@ton/core';

export type NftItemData = {
    inited: boolean;
    index: number;
    collection: Address | null;
    owner: Address | null;
    content: Cell | null;
};

export class NftItem implements Contract {
    static readonly code = Cell.fromBase64(
        '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',
    );

    constructor(
        readonly address: Address,
        readonly init?: StateInit,
    ) {}

    static createFromAddress(address: Address) {
        return new NftItem(address);
    }

    async sendTransfer(
        provider: ContractProvider,
        via: Sender,
        params: {
            value?: bigint;
            to: Address;
            responseTo?: Address;
            forwardAmount?: bigint;
            forwardBody?: Cell | Builder;
        },
    ) {
        await provider.internal(via, {
            value: params.value ?? toNano('0.05'),
            body: beginCell()
                .storeUint(0x5fcc3d14, 32) // op
                .storeUint(0, 64) // query id
                .storeAddress(params.to)
                .storeAddress(params.responseTo)
                .storeBit(false) // custom payload
                .storeCoins(params.forwardAmount ?? 0n)
                .storeMaybeRef(params.forwardBody)
                .endCell(),
        });
    }

    async getData(provider: ContractProvider): Promise<NftItemData> {
        const { stack } = await provider.get('get_nft_data', []);
        return {
            inited: stack.readBoolean(),
            index: stack.readNumber(),
            collection: stack.readAddressOpt(),
            owner: stack.readAddressOpt(),
            content: stack.readCellOpt(),
        };
    }
}