import {Inject, Injectable, Sanitizer} from '@angular/core';
import {BehaviorSubject} from "rxjs";
import {File} from "../../models/File";
import {invoke} from "@tauri-apps/api/tauri";
import {DOCUMENT} from "@angular/common";
import {DomSanitizer, SafeResourceUrl} from "@angular/platform-browser";

@Injectable({
  providedIn: 'root'
})
export class FileService {

  displayedFiles = new BehaviorSubject<File[]>([]);

  constructor(@Inject(DomSanitizer) private sanitizer: DomSanitizer) {

  }

  public async getFiles() {
    let all_files = await invoke<File[]>("get_all_files");
    this.displayedFiles.next(all_files.slice(70, 100));
  }

  public async readFile(hash: string, mime_type: string): Promise<SafeResourceUrl> {
    const data = await invoke<number[]>("read_file_by_hash", {hash});
    const blob = new Blob([new Uint8Array(data)], {type: mime_type});

    const url = URL?.createObjectURL(blob);
    return this.sanitizer.bypassSecurityTrustResourceUrl(url);
  }
}