// Copyright (c) 2020-2021 Drew Lemmy
// This file is part of KristWeb 2 under AGPL-3.0.
// Full details: https://github.com/tmpim/KristWeb2/blob/master/LICENSE.txt
import { useMemo } from "react";
import classNames from "classnames";
import { Tooltip } from "antd";

import { useTranslation } from "react-i18next";

import { KristAddress } from "@api/types";
import { Wallet, useWallets } from "@wallets";
import { Contact, useContacts } from "@contacts";
import { parseCommonMeta, CommonMeta, useNameSuffix, stripNameSuffix } from "@utils/krist";
import { useBooleanSetting } from "@utils/settings";

import { KristNameLink } from "../names/KristNameLink";
import { ConditionalLink } from "@comp/ConditionalLink";
import { SmallCopyable } from "@comp/SmallCopyable";

import { getVerified, VerifiedAddressLink } from "./VerifiedAddress";

import "./ContextualAddress.less";

interface Props {
  address: KristAddress | string;
  wallet?: Wallet | false;
  contact?: Contact | false;
  metadata?: string;
  source?: boolean;
  hideNameAddress?: boolean;
  allowWrap?: boolean;
  neverCopyable?: boolean;
  nonExistent?: boolean;
  noLink?: boolean;
  className?: string;
}

export function ContextualAddress({
  address: origAddress,
  wallet: origWallet,
  contact: origContact,
  metadata,
  source,
  hideNameAddress,
  allowWrap,
  neverCopyable,
  nonExistent,
  noLink,
  className
}: Props): JSX.Element {
  const { t } = useTranslation();

  const { walletAddressMap } = useWallets();
  const { contactAddressMap } = useContacts();

  const nameSuffix = useNameSuffix();
  const addressCopyButtons = useBooleanSetting("addressCopyButtons");

  const address = typeof origAddress === "object"
    ? origAddress.address
    : origAddress;

  // If we were given a wallet, use it. Otherwise, look it up, unless it was
  // explicitly excluded (e.g. the Wallets table)
  const walletLabel = origWallet !== false
    ? (origWallet || walletAddressMap[address])?.label
    : undefined;
  const contactLabel = origContact !== false
    ? (origContact || contactAddressMap[address])?.label
    : undefined;

  // Parse the CommonMeta, if metadata was supplied, to determine whether or not
  // to display a name or metaname.
  const {
    name: cmName,
    recipient: cmRecipient,
    return: cmReturn,
    returnName: cmReturnName,
    returnRecipient: cmReturnRecipient
  } = useMemo(
    () => parseCommonMeta(nameSuffix, metadata) || {} as Partial<CommonMeta>,
    [nameSuffix, metadata]
  );

  // Finally, whether or not this a metaname should be displayed:
  const hasMetaname = source ? !!cmReturnRecipient : !!cmRecipient;

  // Display a verified address if available
  const verified = getVerified(address);

  // If the address definitely doesn't exist, show the 'not yet initialised'
  // tooltip on hover instead.
  const showTooltip = !verified &&
    ((hideNameAddress && !!hasMetaname) || !!walletLabel || !!contactLabel);
  const tooltipTitle = nonExistent
    ? t("contextualAddressNonExistentTooltip")
    : (showTooltip ? address : undefined);

  const copyable = !neverCopyable && addressCopyButtons
    ? { text: address } : undefined;

  const classes = classNames("contextual-address", className, {
    "contextual-address-allow-wrap": allowWrap,
    "contextual-address-non-existent": nonExistent
  });

  // The main contents of the contextual address, may be wrapped in a tooltip
  const mainContents = useMemo(() => hasMetaname
    ? (
      // Display the metaname and link to the name if possible
      <AddressMetaname
        nameSuffix={nameSuffix}
        address={address}
        source={!!source}
        hideNameAddress={!!hideNameAddress}
        noLink={!!noLink}

        name={cmName}
        recipient={cmRecipient}
        return={cmReturn}
        returnName={cmReturnName}
      />
    )
    : (verified
      // Display the verified address if possible
      ? <VerifiedAddressLink
        address={address}
        verified={verified}
        noLink={noLink}
      />
      : (
        // Display the regular address or label
        <ConditionalLink
          to={"/network/addresses/" + encodeURIComponent(address)}
          matchTo matchExact
          condition={!nonExistent && !noLink}
        >
          <AddressContent
            walletLabel={walletLabel}
            contactLabel={contactLabel}
            address={address}
          />
        </ConditionalLink>
      )
    ), [
    hideNameAddress, nonExistent, noLink, source, nameSuffix,
    address, walletLabel, contactLabel, verified,
    cmName, cmRecipient, cmReturn, cmReturnName, hasMetaname,
  ]);

  return <span className={classes}>
    {/* Only render the tooltip component if it's actually used */}
    {tooltipTitle
      ? (
        <Tooltip title={tooltipTitle}>
          {mainContents}

          {/* This empty child here forces the Tooltip to change its hover
            * behaviour. Pretty funky, needs investigating. */}
          <></>
        </Tooltip>
      )
      : mainContents}

    {copyable && <SmallCopyable {...copyable} />}
  </span>;
}

interface AddressContentProps {
  walletLabel?: string;
  contactLabel?: string;
  address: string;
}

/** The label of the wallet or contact, or the address itself (not a metaname) */
function AddressContent({
  walletLabel,
  contactLabel,
  address,
  ...props
}: AddressContentProps): JSX.Element {
  return walletLabel
    ? <span className="address-wallet" {...props}>{walletLabel}</span>
    : (contactLabel
      ? <span className="address-contact" {...props}>{contactLabel}</span>
      : <span className="address-address" {...props}>{address}</span>);
}

interface AddressMetanameProps {
  nameSuffix: string;
  address: string;
  source: boolean;
  hideNameAddress: boolean;
  noLink: boolean;

  name?: string;
  recipient?: string;
  return?: string;
  returnName?: string;
}

export function AddressMetaname({
  nameSuffix,
  address,
  source,
  hideNameAddress,
  noLink,

  name: cmName,
  recipient: cmRecipient,
  return: cmReturn,
  returnName: cmReturnName
}: AddressMetanameProps): JSX.Element {
  const rawMetaname = (source ? cmReturn : cmRecipient) || undefined;
  const name = (source ? cmReturnName : cmName) || undefined;
  const nameWithoutSuffix = name ? stripNameSuffix(nameSuffix, name) : undefined;

  const verified = getVerified(address);

  function AddressContent() {
    return verified
      ? (
        // Verified address
        <VerifiedAddressLink
          address={address}
          verified={verified}
          parens
          noLink={noLink}
        />
      )
      : (
        // Regular address
        <span className="address-original">
          <ConditionalLink
            to={"/network/addresses/" + encodeURIComponent(address)}
            matchTo matchExact
            condition={!noLink}
          >
            ({address})
          </ConditionalLink>
        </span>
      );
  }

  return name
    ? <>
      {/* Display the name/metaname (e.g. foo@bar.kst) */}
      <KristNameLink
        className="address-name"
        name={nameWithoutSuffix!}
        text={rawMetaname}
        noLink={noLink}
      />

      {/* Display the original address too */}
      {!hideNameAddress && <>
        &nbsp;<AddressContent />
      </>}
    </>
    : (
      // Display the raw metaname, but link to the owner address
      <ConditionalLink
        to={"/network/addresses/" + encodeURIComponent(address)}
        matchTo
        matchExact
        condition={!noLink}
      >
        <span className="address-raw-metaname">{rawMetaname}</span>
      </ConditionalLink>
    );
}