73 lines
1.9 KiB
TypeScript
73 lines
1.9 KiB
TypeScript
import { Component, OnInit, OnDestroy, Input, OnChanges } from '@angular/core';
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import { Subscription } from 'rxjs';
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import { Block } from 'src/app/interfaces/electrs.interface';
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import { StateService } from 'src/app/services/state.service';
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@Component({
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selector: 'app-blockchain-blocks',
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templateUrl: './blockchain-blocks.component.html',
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styleUrls: ['./blockchain-blocks.component.scss']
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})
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export class BlockchainBlocksComponent implements OnInit, OnChanges, OnDestroy {
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@Input() markHeight = 0;
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blocks: Block[] = [];
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blocksSubscription: Subscription;
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interval: any;
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arrowVisible = false;
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arrowLeftPx = 30;
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constructor(
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private stateService: StateService,
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) { }
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ngOnInit() {
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this.blocksSubscription = this.stateService.blocks$
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.subscribe((block) => {
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if (this.blocks.some((b) => b.height === block.height)) {
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return;
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}
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this.blocks.unshift(block);
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this.blocks = this.blocks.slice(0, 8);
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this.moveArrowToPosition();
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});
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}
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ngOnChanges() {
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this.moveArrowToPosition();
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}
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ngOnDestroy() {
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this.blocksSubscription.unsubscribe();
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clearInterval(this.interval);
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}
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moveArrowToPosition() {
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if (!this.markHeight) {
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this.arrowVisible = false;
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return;
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}
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const blockindex = this.blocks.findIndex((b) => b.height === this.markHeight);
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if (blockindex !== -1) {
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this.arrowVisible = true;
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this.arrowLeftPx = blockindex * 155 + 30;
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}
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}
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trackByBlocksFn(index: number, item: Block) {
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return item.height;
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}
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getStyleForBlock(block: Block) {
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const greenBackgroundHeight = 100 - (block.weight / 4000000) * 100;
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return {
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left: 155 * this.blocks.indexOf(block) + 'px',
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background: `repeating-linear-gradient(#2d3348, #2d3348 ${greenBackgroundHeight}%,
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#9339f4 ${Math.max(greenBackgroundHeight, 0)}%, #105fb0 100%)`,
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};
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}
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}
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