import { ExUnits } from "./parameterUpdate";
import { PlutusData } from "./plutus";

type RedeemerTag = "Spending" | "Minting" | "Certifying" | "Rewarding" | "Voting" | "Proposing";

export type Redeemers = { purpose: RedeemerTag; index: number | bigint; data: any; exUnits: ExUnits };

export function parseRedeemers(redeemers: any[] | Map<[number, number], [any, ExUnits]>): Redeemers[] {
  const parsedRedeemers: Redeemers[] = [];
  if (Array.isArray(redeemers)) {
    redeemers.forEach((redeemer) => {
      const tag = redeemer[0];
      switch (tag) {
        case 0:
          parsedRedeemers.push({ purpose: "Spending", index: redeemer[1], data: redeemer[3], exUnits: redeemer[4] });
          break;
        case 1:
          parsedRedeemers.push({ purpose: "Minting", index: redeemer[1], data: redeemer[3], exUnits: redeemer[4] });
          break;
        case 2:
          parsedRedeemers.push({ purpose: "Certifying", index: redeemer[1], data: redeemer[3], exUnits: redeemer[4] });
          break;
        case 3:
          parsedRedeemers.push({ purpose: "Rewarding", index: redeemer[1], data: redeemer[3], exUnits: redeemer[4] });
          break;
        case 4:
          parsedRedeemers.push({ purpose: "Voting", index: redeemer[1], data: redeemer[3], exUnits: redeemer[4] });
          break;
        case 5:
          parsedRedeemers.push({ purpose: "Proposing", index: redeemer[1], data: redeemer[3], exUnits: redeemer[4] });
          break;
        default:
          throw new Error(`Invalid Redeemer Tag: ${tag} `);
      }
    });
  } else {
    redeemers.forEach((data_exUnits, tag_index) => {
      const tag = tag_index[0];
      const index = tag_index[1];
      const data = data_exUnits[0];
      const exUnits = data_exUnits[1];
      switch (tag) {
        case 0:
          parsedRedeemers.push({ purpose: "Spending", index: index, data: data, exUnits: exUnits });
          break;
        case 1:
          parsedRedeemers.push({ purpose: "Minting", index: index, data: data, exUnits: exUnits });
          break;
        case 2:
          parsedRedeemers.push({ purpose: "Certifying", index: index, data: data, exUnits: exUnits });
          break;
        case 3:
          parsedRedeemers.push({ purpose: "Rewarding", index: index, data: data, exUnits: exUnits });
          break;
        case 4:
          parsedRedeemers.push({ purpose: "Voting", index: index, data: data, exUnits: exUnits });
          break;
        case 5:
          parsedRedeemers.push({ purpose: "Proposing", index: index, data: data, exUnits: exUnits });
          break;
        default:
          throw new Error(`Invalid Redeemer Tag: ${tag} `);
      }
    });
  }
  return parsedRedeemers;
}