import { defineProperties } from "../utils/properties.js";

import { assertArgument } from "../utils/index.js";

import type {
    FeeData, Provider
} from "./provider.js";



const EnsAddress = "0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e";

export class NetworkPlugin {
    readonly name!: string;

    constructor(name: string) {
        defineProperties<NetworkPlugin>(this, { name });
    }

    clone(): NetworkPlugin {
        return new NetworkPlugin(this.name);
    }

//    validate(network: Network): NetworkPlugin {
//        return this;
//    }
}

// Networks can use this plugin to override calculations for the
// intrinsic gas cost of a transaction for networks that differ
// from the latest hardfork on Ethereum mainnet.
export type GasCostParameters = {
    txBase?: number;
    txCreate?: number;
    txDataZero?: number;
    txDataNonzero?: number;
    txAccessListStorageKey?: number;
    txAccessListAddress?: number;
};

export class GasCostPlugin extends NetworkPlugin implements GasCostParameters {
    readonly effectiveBlock!: number;

    readonly txBase!: number;
    readonly txCreate!: number;
    readonly txDataZero!: number;
    readonly txDataNonzero!: number;
    readonly txAccessListStorageKey!: number;
    readonly txAccessListAddress!: number;

    constructor(effectiveBlock?: number, costs?: GasCostParameters) {
        if (effectiveBlock == null) { effectiveBlock = 0; }
        super(`org.ethers.network.plugins.GasCost#${ (effectiveBlock || 0) }`);

        const props: Record<string, number> = { effectiveBlock };
        function set(name: keyof GasCostParameters, nullish: number): void {
            let value = (costs || { })[name];
            if (value == null) { value = nullish; }
            assertArgument(typeof(value) === "number", `invalud value for ${ name }`, "costs", costs);
            props[name] = value;
        }

        set("txBase", 21000);
        set("txCreate", 32000);
        set("txDataZero", 4);
        set("txDataNonzero", 16);
        set("txAccessListStorageKey", 1900);
        set("txAccessListAddress", 2400);

        defineProperties<GasCostPlugin>(this, props);
    }

    clone(): GasCostPlugin {
        return new GasCostPlugin(this.effectiveBlock, this);
    }
}

// Networks shoudl use this plugin to specify the contract address
// and network necessary to resolve ENS names.
export class EnsPlugin extends NetworkPlugin {

    // The ENS contract address
    readonly address!: string;

    // The network ID that the ENS contract lives on
    readonly targetNetwork!: number;

    constructor(address?: null | string, targetNetwork?: null | number) {
        super("org.ethers.plugins.network.Ens");
        defineProperties<EnsPlugin>(this, {
            address: (address || EnsAddress),
            targetNetwork: ((targetNetwork == null) ? 1: targetNetwork)
        });
    }

    clone(): EnsPlugin {
        return new EnsPlugin(this.address, this.targetNetwork);
    }
}

export class FeeDataNetworkPlugin extends NetworkPlugin {
    readonly #feeDataFunc: (provider: Provider) => Promise<FeeData>;

    get feeDataFunc(): (provider: Provider) => Promise<FeeData> {
        return this.#feeDataFunc;
    }

    constructor(feeDataFunc: (provider: Provider) => Promise<FeeData>) {
        super("org.ethers.plugins.network.FeeData");
        this.#feeDataFunc = feeDataFunc;
    }

    async getFeeData(provider: Provider): Promise<FeeData> {
        return await this.#feeDataFunc(provider);
    }

    clone(): FeeDataNetworkPlugin {
        return new FeeDataNetworkPlugin(this.#feeDataFunc);
    }
}

/*
export class CustomBlockNetworkPlugin extends NetworkPlugin {
    readonly #blockFunc: (provider: Provider, block: BlockParams<string>) => Block<string>;
    readonly #blockWithTxsFunc: (provider: Provider, block: BlockParams<TransactionResponseParams>) => Block<TransactionResponse>;

    constructor(blockFunc: (provider: Provider, block: BlockParams<string>) => Block<string>, blockWithTxsFunc: (provider: Provider, block: BlockParams<TransactionResponseParams>) => Block<TransactionResponse>) {
        super("org.ethers.network-plugins.custom-block");
        this.#blockFunc = blockFunc;
        this.#blockWithTxsFunc = blockWithTxsFunc;
    }

    async getBlock(provider: Provider, block: BlockParams<string>): Promise<Block<string>> {
        return await this.#blockFunc(provider, block);
    }

    async getBlockions(provider: Provider, block: BlockParams<TransactionResponseParams>): Promise<Block<TransactionResponse>> {
        return await this.#blockWithTxsFunc(provider, block);
    }

    clone(): CustomBlockNetworkPlugin {
        return new CustomBlockNetworkPlugin(this.#blockFunc, this.#blockWithTxsFunc);
    }
}
*/