Add blockchain.getDifficulty RPC

packages/jellyfish-api-core/__tests__/category/blockchain.test.ts

@@ -249,6 +249,27 @@ describe('masternode', () => {
     })
   })
 
+  // getDifficulty of masternode & non masternode
+  describe('getdifficulty', () => {
+    // const container = new DifficultyRegTest()
+    const client = new ContainerAdapterClient(container)
+
+    beforeAll(async () => {
+      await container.start()
+      await container.waitForReady()
+      // await container.waitForWalletCoinbaseMaturity()
+    })
+
+    afterAll(async () => {
+      await container.stop()
+    })
+
+    it('should getDifficulty', async () => {
+      const getdifficulty = await client.blockchain.getDifficulty()
+      expect(getdifficulty).toBeGreaterThanOrEqual(0)
+    })
+  })
+
   describe('getRawMempool', () => {
     beforeAll(async () => {
       await client.wallet.setWalletFlag(wallet.WalletFlag.AVOID_REUSE)

packages/jellyfish-api-core/src/category/blockchain.ts

@@ -110,6 +110,14 @@ export class Blockchain {
     return await this.client.call('getchaintips', [], 'number')
   }
 
+  /**
+   * Get difficulty of everything.
+   * Return difficulty as number.
+   */
+  async getDifficulty (): Promise<number> {
+    return await this.client.call('getdifficulty', [], 'number')
+  }
+
   /**
    * Get details of unspent transaction output (UTXO).
    *

website/docs/jellyfish/api/blockchain.md

@@ -188,6 +188,14 @@ interface ChainTip {
   status: string
 }
 ```
+## getDifficulty
+Return the proof-of-work difficulty as a multiple of the minimum difficulty.
+```ts tile="client.blockchain.getDifficulty()"
+interface difficulty {
+    getDifficulty (): Promise<number>
+}
+```
+
 
 ## getTxOut