From c5bf0de631391154a1c6683ec41e9efc95a4b05a Mon Sep 17 00:00:00 2001
From: Jaco Greeff <jacogr@gmail.com>
Date: Mon, 4 Jan 2021 14:46:14 +0100
Subject: [PATCH] Parachains registration (#4318)

* Parachains registration

* Registrar dialog
---
 .../page-parachains/src/Overview/Actions.tsx  |  38 ++++++
 .../src/Overview/Parachains.tsx               |   1 +
 .../page-parachains/src/Overview/Summary.tsx  |   8 +-
 .../page-parachains/src/Overview/index.tsx    |  14 ++-
 .../page-parachains/src/modals/Register.tsx   | 118 ++++++++++++++++++
 packages/react-components/src/InputFile.tsx   |  13 +-
 packages/react-components/src/InputWasm.tsx   |  18 +--
 7 files changed, 195 insertions(+), 15 deletions(-)
 create mode 100644 packages/page-parachains/src/Overview/Actions.tsx
 create mode 100644 packages/page-parachains/src/modals/Register.tsx

diff --git a/packages/page-parachains/src/Overview/Actions.tsx b/packages/page-parachains/src/Overview/Actions.tsx
new file mode 100644
index 0000000000..fc9b7ea0ba
--- /dev/null
+++ b/packages/page-parachains/src/Overview/Actions.tsx
@@ -0,0 +1,38 @@
+// Copyright 2017-2021 @polkadot/app-parachains authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import React from 'react';
+
+import { Button } from '@polkadot/react-components';
+import { useApi, useToggle } from '@polkadot/react-hooks';
+
+import Register from '../modals/Register';
+import { useTranslation } from '../translate';
+
+interface Props {
+  canRegister?: boolean;
+}
+
+function Actions ({ canRegister }: Props): React.ReactElement<Props> {
+  const { t } = useTranslation();
+  const { api } = useApi();
+  const [showRegister, toggleRegister] = useToggle();
+
+  return (
+    <>
+      <Button.Group>
+        <Button
+          icon='plus'
+          isDisabled={!canRegister || !api.tx.registrar?.registerParathread}
+          label={t<string>('Register')}
+          onClick={toggleRegister}
+        />
+      </Button.Group>
+      {showRegister && (
+        <Register onClose={toggleRegister} />
+      )}
+    </>
+  );
+}
+
+export default React.memo(Actions);
diff --git a/packages/page-parachains/src/Overview/Parachains.tsx b/packages/page-parachains/src/Overview/Parachains.tsx
index a5bf09b3b8..621b7f50a1 100644
--- a/packages/page-parachains/src/Overview/Parachains.tsx
+++ b/packages/page-parachains/src/Overview/Parachains.tsx
@@ -12,6 +12,7 @@ import { useTranslation } from '../translate';
 import Parachain from './Parachain';
 
 interface Props {
+  canRegister?: boolean;
   ids?: ParaId[];
 }
 
diff --git a/packages/page-parachains/src/Overview/Summary.tsx b/packages/page-parachains/src/Overview/Summary.tsx
index f14d030422..f9abc57c92 100644
--- a/packages/page-parachains/src/Overview/Summary.tsx
+++ b/packages/page-parachains/src/Overview/Summary.tsx
@@ -11,11 +11,12 @@ import { formatNumber, isNumber } from '@polkadot/util';
 import { useTranslation } from '../translate';
 
 interface Props {
+  canRegister?: boolean;
   parachainCount?: number;
   upcomingCount?: number;
 }
 
-function Summary ({ parachainCount, upcomingCount }: Props): React.ReactElement<Props> {
+function Summary ({ canRegister, parachainCount, upcomingCount }: Props): React.ReactElement<Props> {
   const { t } = useTranslation();
   const { api } = useApi();
 
@@ -39,6 +40,11 @@ function Summary ({ parachainCount, upcomingCount }: Props): React.ReactElement<
           </CardSummary>
         )}
       </section>
+      <section>
+        <CardSummary label={t<string>('registration')}>
+          {canRegister ? t<string>('open') : t<string>('closed')}
+        </CardSummary>
+      </section>
       <section>
         <CardSummary
           className='media--800'
diff --git a/packages/page-parachains/src/Overview/index.tsx b/packages/page-parachains/src/Overview/index.tsx
index 8a716ec247..401c4302e7 100644
--- a/packages/page-parachains/src/Overview/index.tsx
+++ b/packages/page-parachains/src/Overview/index.tsx
@@ -1,12 +1,14 @@
 // Copyright 2017-2021 @polkadot/app-parachains authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+import type { bool } from '@polkadot/types';
 import type { ParaId } from '@polkadot/types/interfaces';
 
 import React from 'react';
 
 import { useApi, useCall } from '@polkadot/react-hooks';
 
+import Actions from './Actions';
 import Parachains from './Parachains';
 import Summary from './Summary';
 import Upcoming from './Upcoming';
@@ -15,20 +17,30 @@ interface Props {
   className?: string;
 }
 
+const transformRegister = {
+  transform: (value: bool): boolean => value.isTrue
+};
+
 function Overview (): React.ReactElement<Props> {
   const { api } = useApi();
   const paraIds = useCall<ParaId[]>(api.query.paras?.parachains);
   const upcomingIds = useCall<ParaId[]>(api.query.paras?.upcomingParas);
+  const canRegister = useCall<boolean>(api.query.registrar?.parathreadsRegistrationEnabled, [], transformRegister);
 
   return (
     <>
       <Summary
+        canRegister={canRegister}
         parachainCount={paraIds?.length}
         upcomingCount={upcomingIds?.length}
       />
+      <Actions canRegister={canRegister} />
       {api.query.paras && (
         <>
-          <Parachains ids={paraIds} />
+          <Parachains
+            canRegister={canRegister}
+            ids={paraIds}
+          />
           <Upcoming ids={upcomingIds} />
         </>
       )}
diff --git a/packages/page-parachains/src/modals/Register.tsx b/packages/page-parachains/src/modals/Register.tsx
new file mode 100644
index 0000000000..2251da1ace
--- /dev/null
+++ b/packages/page-parachains/src/modals/Register.tsx
@@ -0,0 +1,118 @@
+// Copyright 2017-2021 @polkadot/app-parachains authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import React, { useCallback, useState } from 'react';
+
+import { InputAddress, InputFile, InputNumber, InputWasm, Modal, TxButton } from '@polkadot/react-components';
+import { useApi } from '@polkadot/react-hooks';
+import { BN_ZERO, compactAddLength } from '@polkadot/util';
+
+import { useTranslation } from '../translate';
+
+interface Props {
+  className?: string;
+  onClose: () => void;
+}
+
+interface CodeState {
+  isWasmValid: boolean;
+  wasm: Uint8Array | null;
+}
+
+function Register ({ className, onClose }: Props): React.ReactElement<Props> {
+  const { t } = useTranslation();
+  const { api } = useApi();
+  const [accountId, setAccountId] = useState<string | null>(null);
+  const [paraId, setParaId] = useState(BN_ZERO);
+  const [{ isWasmValid, wasm }, setWasm] = useState<CodeState>({ isWasmValid: false, wasm: null });
+  const [genesisState, setGenesisState] = useState<Uint8Array | null>(null);
+
+  const _setGenesisState = useCallback(
+    (data: Uint8Array) => setGenesisState(compactAddLength(data)),
+    []
+  );
+
+  const _setWasm = useCallback(
+    (wasm: Uint8Array, isWasmValid: boolean) => setWasm({ isWasmValid, wasm }),
+    []
+  );
+
+  console.error(genesisState);
+
+  return (
+    <Modal
+      className={className}
+      header={t<string>('Register parachain')}
+    >
+      <Modal.Content>
+        <Modal.Columns>
+          <Modal.Column>
+            <InputAddress
+              label={t<string>('register from')}
+              onChange={setAccountId}
+              type='account'
+              value={accountId}
+            />
+          </Modal.Column>
+          <Modal.Column>
+            <p>{t<string>('This account will be associated with the parachain and pay the deposit.')}</p>
+          </Modal.Column>
+        </Modal.Columns>
+        <Modal.Columns>
+          <Modal.Column>
+            <InputNumber
+              label={t<string>('parachain id')}
+              onChange={setParaId}
+            />
+          </Modal.Column>
+          <Modal.Column>
+            <p>{t<string>('The id of this parachain as known on the network')}</p>
+          </Modal.Column>
+        </Modal.Columns>
+        <Modal.Columns>
+          <Modal.Column>
+            <InputWasm
+              help={t<string>('The compiled runtime WASM for the parachain you wish to register.')}
+              isError={!isWasmValid}
+              label={t<string>('code')}
+              onChange={_setWasm}
+              placeholder={
+                wasm && !isWasmValid
+                  ? t<string>('The code is not recognized as being in valid WASM format')
+                  : null
+              }
+            />
+          </Modal.Column>
+          <Modal.Column>
+            <p>{t<string>('The WASM validation function for this parachain.')}</p>
+          </Modal.Column>
+        </Modal.Columns>
+        <Modal.Columns>
+          <Modal.Column>
+            <InputFile
+              help={t<string>('The genesis state for the parachain.')}
+              isError={!genesisState}
+              label={t<string>('initial state')}
+              onChange={_setGenesisState}
+            />
+          </Modal.Column>
+          <Modal.Column>
+            <p>{t<string>('The genesis state for this parachain.')}</p>
+          </Modal.Column>
+        </Modal.Columns>
+      </Modal.Content>
+      <Modal.Actions onCancel={onClose}>
+        <TxButton
+          accountId={accountId}
+          icon='plus'
+          isDisabled={!isWasmValid || !genesisState}
+          onStart={onClose}
+          params={[paraId, genesisState, wasm]}
+          tx={api.tx.registrar.registerParathread}
+        />
+      </Modal.Actions>
+    </Modal>
+  );
+}
+
+export default React.memo(Register);
diff --git a/packages/react-components/src/InputFile.tsx b/packages/react-components/src/InputFile.tsx
index 1477fc3221..0f457dac15 100644
--- a/packages/react-components/src/InputFile.tsx
+++ b/packages/react-components/src/InputFile.tsx
@@ -12,10 +12,7 @@ import { formatNumber, hexToU8a, isHex, u8aToString } from '@polkadot/util';
 import Labelled from './Labelled';
 import { useTranslation } from './translate';
 
-export interface InputFileProps {
-  // Reference Example Usage: https://github.com/react-dropzone/react-dropzone/tree/master/examples/Accept
-  // i.e. MIME types: 'application/json, text/plain', or '.json, .txt'
-  accept?: string;
+export interface InputFilePropsBase {
   className?: string;
   clearContent?: boolean;
   help?: React.ReactNode;
@@ -23,12 +20,18 @@ export interface InputFileProps {
   isError?: boolean;
   isFull?: boolean;
   label: React.ReactNode;
-  onChange?: (contents: Uint8Array, name: string) => void;
   placeholder?: React.ReactNode | null;
   withEllipsis?: boolean;
   withLabel?: boolean;
 }
 
+export interface InputFileProps extends InputFilePropsBase {
+  // Reference Example Usage: https://github.com/react-dropzone/react-dropzone/tree/master/examples/Accept
+  // i.e. MIME types: 'application/json, text/plain', or '.json, .txt'
+  accept?: string;
+  onChange?: (contents: Uint8Array, name: string) => void;
+}
+
 interface FileState {
   name: string;
   size: number;
diff --git a/packages/react-components/src/InputWasm.tsx b/packages/react-components/src/InputWasm.tsx
index 1eaae7a013..f8eb76d72b 100644
--- a/packages/react-components/src/InputWasm.tsx
+++ b/packages/react-components/src/InputWasm.tsx
@@ -1,24 +1,26 @@
 // Copyright 2017-2021 @polkadot/react-components authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+import type { InputFilePropsBase } from './InputFile';
+
 import React, { useCallback } from 'react';
 
 import { compactAddLength, isWasm } from '@polkadot/util';
 
-import InputFile, { InputFileProps } from './InputFile';
+import InputFile from './InputFile';
 
-interface Props extends Omit<InputFileProps, 'accept'> {
-  isValidRef: React.MutableRefObject<boolean>;
-  onChange: (contents: Uint8Array, name?: string) => void;
+interface Props extends InputFilePropsBase {
+  onChange: (contents: Uint8Array, isValid: boolean, name?: string) => void;
 }
 
-function InputWasm ({ isValidRef, onChange, ...props }: Props): React.ReactElement<Props> {
+function InputWasm ({ onChange, ...props }: Props): React.ReactElement<Props> {
   const _onChange = useCallback(
     (wasm: Uint8Array, name: string): void => {
-      isValidRef.current = isWasm(wasm);
-      onChange(compactAddLength(wasm), name);
+      const isValid = isWasm(wasm);
+
+      onChange(compactAddLength(wasm), isValid, name);
     },
-    [isValidRef, onChange]
+    [onChange]
   );
 
   return (