import type { DeviceAction, DeviceActionArg } from "@ledgerhq/coin-framework/bot/types";
import {
  deviceActionFlow,
  formatDeviceAmount,
  SpeculosButton,
} from "@ledgerhq/coin-framework/bot/specs";
import type { Transaction, Vote } from "../types";
import { Account } from "@ledgerhq/types-live";

function subAccount(subAccountId: string, account: Account) {
  const sub = (account.subAccounts || []).find(a => a.id === subAccountId);
  if (!sub || sub.type !== "TokenAccount")
    throw new Error("expected sub account id " + subAccountId);
  return sub;
}

const resourceExpected = ({ transaction: { resource } }: DeviceActionArg<Transaction, any>) =>
  resource ? resource.slice(0, 1).toUpperCase() + resource.slice(1).toLowerCase() : "";

export const acceptTransaction: DeviceAction<Transaction, any> = deviceActionFlow({
  steps: [
    {
      title: "Review",
      button: SpeculosButton.RIGHT, // TODO define expectedValue
    },
    {
      title: "Claim",
      button: SpeculosButton.RIGHT,
    },
    {
      title: "Gain",
      button: SpeculosButton.RIGHT,
      expectedValue: arg => resourceExpected(arg),
    },
    {
      title: "Resource",
      button: SpeculosButton.RIGHT,
      expectedValue: arg => resourceExpected(arg),
    },
    {
      title: "Amount",
      button: SpeculosButton.RIGHT,
      expectedValue: ({ account, status, transaction }) =>
        formatDeviceAmount(
          transaction.subAccountId
            ? subAccount(transaction.subAccountId, account).token
            : account.currency,
          status.amount,
          {
            hideCode: true,
          },
        ),
    },
    {
      title: "Token",
      button: SpeculosButton.RIGHT,
      expectedValue: ({ account, transaction }) => {
        const isTokenTransaction = Boolean(transaction.subAccountId);
        if (isTokenTransaction) {
          const token = subAccount(transaction.subAccountId!, account).token;
          const [, tokenType, tokenId] = token.id.split("/");
          if (tokenType === "trc10") {
            return `${token.name.split(" ")[0]}[${tokenId}]`;
          } else {
            return token.ticker;
          }
        }
        return "TRX";
      },
    },
    {
      title: "From Address",
      button: SpeculosButton.RIGHT,
      expectedValue: ({ account }) => account.freshAddress,
    },
    {
      title: "Freeze To",
      button: SpeculosButton.RIGHT,
      expectedValue: ({ account }) => account.freshAddress,
    },
    {
      title: "Delegated To",
      button: SpeculosButton.RIGHT,
      expectedValue: ({ account }) => account.freshAddress,
    },
    {
      title: "To",
      button: SpeculosButton.RIGHT,
      expectedValue: ({ transaction }) => transaction.recipient,
    },
    {
      title: "Sign",
      button: SpeculosButton.BOTH,
      final: true,
    },
  ],
  fallback: ({ event, transaction }) => {
    if (transaction.mode === "vote") {
      for (const vote of transaction.votes) {
        const title = `${vote.address.slice(0, 5)}...${vote.address.slice(
          vote.address.length - 5,
        )}`;

        if (event.text === title) {
          return voteAction(vote, title);
        }
      }
    }
  },
});

function voteAction(
  vote: Vote,
  title: string,
): { title: string; button: SpeculosButton; expectedValue: () => string } {
  return {
    title,
    button: SpeculosButton.RIGHT,
    expectedValue: () => String(vote.voteCount),
  };
}