Add chain_getBlock & author_pendingExtrinsics (#132)

* Add chain_getBlock & author_pendingExtrinsics

* Remove sample

* TSLint

packages/type-primitives/package.json

@@ -34,8 +34,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.51",
-    "@polkadot/trie-hash": "^0.28.1",
-    "@polkadot/util": "^0.28.1"
+    "@polkadot/trie-hash": "^0.28.2",
+    "@polkadot/util": "^0.28.2"
   },
   "devDependencies": {
     "bn.js": "^4.11.8"

packages/type-primitives/src/codec/block/decode.ts

@@ -0,0 +1,18 @@
+// Copyright 2017-2018 @polkadot/primitives authors & contributors
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+
+import { Block } from '../../block';
+
+import createBlock from '../../create/block';
+import decodeHeader from '../header/decode';
+import decodeRaw from './decodeRaw';
+
+export default function decodeBlock (u8a: Uint8Array): Block {
+  const { header, extrinsics } = decodeRaw(u8a);
+
+  return createBlock({
+    header: decodeHeader(header),
+    extrinsics
+  });
+}

packages/type-primitives/src/json/block/decode.ts

@@ -0,0 +1,24 @@
+// Copyright 2017-2018 @polkadot/primitives authors & contributors
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+
+import { BlockDecoded } from '@polkadot/params/types';
+import { JsonBlock } from '../types';
+
+import toU8a from '@polkadot/util/u8a/toU8a';
+
+import decodeExtrinsic from '../extrinsic/decode';
+import decodeHeader from '../header/decode';
+
+export default function blockDecode ({ block: { extrinsics, header }, justification }: JsonBlock): BlockDecoded {
+  return {
+    // TODO We should decode the justifications (and change type from any)
+    justification,
+    header: decodeHeader(header),
+    extrinsics: extrinsics.map((extrinsic) =>
+      decodeExtrinsic(
+        toU8a(extrinsic as any)
+      )
+    )
+  };
+}

packages/type-primitives/src/json/extrinsic/decode.ts

@@ -0,0 +1,22 @@
+// Copyright 2017-2018 @polkadot/primitives authors & contributors
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+
+import { BlockExtrinsicDecoded, ExtrinsicDecoded } from '@polkadot/params/types';
+
+import BN from 'bn.js';
+import decoder from '@polkadot/params/decode';
+
+export default function extrinsicDecode (extrinsic: Uint8Array): BlockExtrinsicDecoded {
+  const addressDecoded = decoder('AccountId', extrinsic, 'latest');
+  const nonceDecoded = decoder('AccountIndex', extrinsic.subarray(addressDecoded.length), 'latest');
+  const extrinsicDecoded = decoder('Call', extrinsic.subarray(addressDecoded.length + nonceDecoded.length), 'latest');
+  const signature = extrinsic.subarray(addressDecoded.length + nonceDecoded.length + extrinsicDecoded.length);
+
+  return {
+    ...(extrinsicDecoded.value as ExtrinsicDecoded),
+    address: addressDecoded.value as string,
+    nonce: nonceDecoded.value as BN,
+    signature
+  };
+}

packages/type-primitives/src/json/hash/encode.ts

@@ -6,7 +6,10 @@ import { Hash } from '../../base';
 import { JsonHash } from '../types';
 
 import u8aToHex from '@polkadot/util/u8a/toHex';
+import toU8a from '@polkadot/util/u8a/toU8a';
 
-export default function hashEncode (value: Hash, bitLength: number = -1): JsonHash {
-  return u8aToHex(value);
+export default function hashEncode (value: Hash | string, bitLength: number = -1): JsonHash {
+  return u8aToHex(
+    toU8a(value)
+  );
 }

packages/type-primitives/src/json/types.d.ts

@@ -2,6 +2,8 @@
 // This software may be modified and distributed under the terms
 // of the ISC license. See the LICENSE file for details.
 
+import { ExtrinsicDecoded } from '@polkadot/params/types';
+
 export type JsonBnType = string;
 export type JsonHash = string;
 
@@ -44,8 +46,12 @@ export type JsonHeader = {
   digest: JsonDigest
 };
 
+export type JsonJustification = {};
+
 export type JsonBlock = {
-  header: JsonHeader,
-  timestamp: JsonU64,
-  transactions: Array<JsonUnchecked>
+  block: {
+    extrinsics: Array<Array<JsonBytes>>,
+    header: JsonHeader,
+  },
+  justification: JsonJustification
 };