import { HardhatUserConfig } from "hardhat/types";
import {
  DEFAULT_CURRENCY,
  DEFAULT_CURRENCY_DISPLAY_PRECISION,
  DEFAULT_JSON_OUTPUT_FILE,
  DEFAULT_OPTIMISM_HARDFORK,
  BASE_ECOTONE_BASE_FEE_SCALAR,
  BASE_ECOTONE_BLOB_BASE_FEE_SCALAR,
  OPTIMISM_ECOTONE_BASE_FEE_SCALAR,
  OPTIMISM_ECOTONE_BLOB_BASE_FEE_SCALAR,
  TABLE_NAME_TERMINAL
} from "../constants";

import { GasReporterOptions, OptimismHardfork } from "../types";

/**
 * Validates Optimism hardfork option
 * @param hardfork
 * @returns {boolean}
 */
function isOptimismHardfork(hardfork: string | undefined) {
  if (hardfork === undefined) return false;

  return ["bedrock, ecotone"].includes(hardfork);
}

/**
 * Sets default reporter options
 */
export function getDefaultOptions(userConfig: Readonly<HardhatUserConfig>): GasReporterOptions {
  let optimismHardfork: OptimismHardfork;
  let opStackBaseFeeScalar: number = 0;
  let opStackBlobBaseFeeScalar: number = 0;

  const userOptions = userConfig.gasReporter;

  // NB: silently coercing to default if there's a misspelling or option not avail
  if (userOptions) {
    if (userOptions.L2 === "optimism" || userOptions.L2 === "base")
      if (!isOptimismHardfork(userOptions.optimismHardfork)){
        optimismHardfork = DEFAULT_OPTIMISM_HARDFORK;
      }

    if (userOptions.L2 === "optimism") {
      if (!userOptions.opStackBaseFeeScalar) {
        opStackBaseFeeScalar = OPTIMISM_ECOTONE_BASE_FEE_SCALAR;
      }
      if (!userOptions.opStackBlobBaseFeeScalar) {
        opStackBlobBaseFeeScalar = OPTIMISM_ECOTONE_BLOB_BASE_FEE_SCALAR
      }
    }

    if (userOptions.L2 === "base") {
      if (!userOptions.opStackBaseFeeScalar) {
        opStackBaseFeeScalar = BASE_ECOTONE_BASE_FEE_SCALAR;
      }
      if (!userOptions.opStackBlobBaseFeeScalar) {
        opStackBlobBaseFeeScalar = BASE_ECOTONE_BLOB_BASE_FEE_SCALAR
      }
    }
  }

  return {
    currency: DEFAULT_CURRENCY,
    currencyDisplayPrecision: DEFAULT_CURRENCY_DISPLAY_PRECISION,
    darkMode: false,
    enabled: true,
    excludeContracts: [],
    excludeAutoGeneratedGetters: false,
    forceTerminalOutput: false,
    includeBytecodeInJSON: false,
    includeIntrinsicGas: true,
    L1: "ethereum",
    noColors: false,
    offline: false,
    opStackBaseFeeScalar,
    opStackBlobBaseFeeScalar,
    optimismHardfork,
    outputJSON: false,
    outputJSONFile: DEFAULT_JSON_OUTPUT_FILE,
    reportFormat: TABLE_NAME_TERMINAL,
    reportPureAndViewMethods: false,
    rst: false,
    rstTitle: "",
    suppressTerminalOutput: false,
    showMethodSig: false,
    showUncalledMethods: false,
  };
}