import {
  encodeCrock,
  stringToBytes
} from "@gnu-taler/taler-util";
import { Fragment, h, VNode } from "preact";
import { useLayoutEffect, useRef, useState } from "preact/hooks";
import { AuthMethodSetupProps } from ".";
import { PhoneNumberInput } from "../../../components/fields/NumberInput";
import { AnastasisClientFrame } from "../index";

export function AuthMethodSmsSetup({ addAuthMethod, cancel, configured }: AuthMethodSetupProps): VNode {
  const [mobileNumber, setMobileNumber] = useState("");
  const addSmsAuth = (): void => {
    addAuthMethod({
      authentication_method: {
        type: "sms",
        instructions: `SMS to ${mobileNumber}`,
        challenge: encodeCrock(stringToBytes(mobileNumber)),
      },
    });
  };
  const inputRef = useRef<HTMLInputElement>(null);
  useLayoutEffect(() => {
    inputRef.current?.focus();
  }, []);
  const errors = !mobileNumber ? 'Add a mobile number' : undefined
  return (
    <AnastasisClientFrame hideNav title="Add SMS authentication">
      <div>
        <p>
          For SMS authentication, you need to provide a mobile number. When
          recovering your secret, you will be asked to enter the code you
          receive via SMS.
        </p>
        <div class="container">
          <PhoneNumberInput
            label="Mobile number"
            placeholder="Your mobile number"
            grabFocus
            bind={[mobileNumber, setMobileNumber]} />
        </div>
        {configured.length > 0 && <section class="section">
          <div class="block">
            Your mobile numbers:
          </div><div class="block">
            {configured.map((c, i) => {
              return <div key={i} class="box" style={{ display: 'flex', justifyContent: 'space-between' }}>
                <p style={{ marginTop: 'auto', marginBottom: 'auto' }}>{c.instructions}</p>
                <div><button class="button is-danger" onClick={c.remove}>Delete</button></div>
              </div>
            })}
          </div></section>}
        <div style={{ marginTop: '2em', display: 'flex', justifyContent: 'space-between' }}>
          <button class="button" onClick={cancel}>Cancel</button>
          <span data-tooltip={errors}>
            <button class="button is-info" disabled={errors !== undefined} onClick={addSmsAuth}>Add</button>
          </span>
        </div>
      </div>
    </AnastasisClientFrame>
  );
}
