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import { injectable, inject } from 'tsyringe';
import FindPresenter from '../presenters/FindPresenter';
import FindRepository from '../repositories/FindRepository';
import FindClient from '../client/FindClient';
import ConsoleClient from '../client/ConsoleClient';
@injectable()
export default class FindUseCase {
constructor(
@inject('FindPresenter') private presenter: FindPresenter,
@inject('FindRepository') private repository: FindRepository,
@inject('FindClient') private client: FindClient,
@inject('ConsoleClient') private consoleClient: ConsoleClient,
) {
}
async startFind(keyword?: string): Promise<void> {
this.presenter.clearSelection();
if (keyword) {
this.saveKeyword(keyword);
} else {
let lastKeyword = await this.getKeyword();
if (!lastKeyword) {
return this.showNoLastKeywordError();
}
this.saveKeyword(lastKeyword);
}
return this.findNext();
}
findNext(): Promise<void> {
return this.findNextPrev(false);
}
findPrev(): Promise<void> {
return this.findNextPrev(true);
}
private async findNextPrev(
backwards: boolean,
): Promise<void> {
let keyword = await this.getKeyword();
if (!keyword) {
return this.showNoLastKeywordError();
}
let found = this.presenter.find(keyword, backwards);
if (found) {
this.consoleClient.info('Pattern found: ' + keyword);
} else {
this.consoleClient.error('Pattern not found: ' + keyword);
}
}
private async getKeyword(): Promise<string | null> {
let keyword = this.repository.getLastKeyword();
if (!keyword) {
keyword = await this.client.getGlobalLastKeyword();
}
return keyword;
}
private async saveKeyword(keyword: string): Promise<void> {
this.repository.setLastKeyword(keyword);
await this.client.setGlobalLastKeyword(keyword);
}
private async showNoLastKeywordError(): Promise<void> {
await this.consoleClient.error('No previous search keywords');
}
}
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