New base code for mempool blockchain explorerer

frontend/src/app/services/electrs-api.service.ts

@@ -0,0 +1,57 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { Block, Transaction, Address, Outspend, Recent } from '../interfaces/electrs.interface';
+
+const API_BASE_URL = 'https://www.blockstream.info/api';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ElectrsApiService {
+  constructor(
+    private httpClient: HttpClient,
+  ) {
+  }
+
+  getBlock$(hash: string): Observable<Block> {
+    return this.httpClient.get<Block>(API_BASE_URL + '/block/' + hash);
+  }
+
+  listBlocks$(height?: number): Observable<Block[]> {
+    return this.httpClient.get<Block[]>(API_BASE_URL + '/blocks/' + (height || ''));
+  }
+
+  getTransaction$(txId: string): Observable<Transaction> {
+    return this.httpClient.get<Transaction>(API_BASE_URL + '/tx/' + txId);
+  }
+
+  getRecentTransaction$(): Observable<Recent[]> {
+    return this.httpClient.get<Recent[]>(API_BASE_URL + '/mempool/recent');
+  }
+
+  getOutspend$(hash: string, vout: number): Observable<Outspend> {
+    return this.httpClient.get<Outspend>(API_BASE_URL + '/tx/' + hash + '/outspend/' + vout);
+  }
+
+  getOutspends$(hash: string): Observable<Outspend[]> {
+    return this.httpClient.get<Outspend[]>(API_BASE_URL + '/tx/' + hash + '/outspends');
+  }
+
+  getBlockTransactions$(hash: string, index: number = 0): Observable<Transaction[]> {
+    return this.httpClient.get<Transaction[]>(API_BASE_URL + '/block/' + hash + '/txs/' + index);
+  }
+
+  getAddress$(address: string): Observable<Address> {
+    return this.httpClient.get<Address>(API_BASE_URL + '/address/' + address);
+  }
+
+  getAddressTransactions$(address: string): Observable<Transaction[]> {
+    return this.httpClient.get<Transaction[]>(API_BASE_URL + '/address/' + address + '/txs');
+  }
+
+  getAddressTransactionsFromHash$(address: string, txid: string): Observable<Transaction[]> {
+    return this.httpClient.get<Transaction[]>(API_BASE_URL + '/address/' + address + '/txs/chain/' + txid);
+  }
+
+}