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import { Component, EventEmitter, Output, ViewChild } from '@angular/core';
import { NgxCsvParser, NgxCSVParserError } from 'ngx-csv-parser';
import Dataset from 'src/app/_data/Dataset';
@Component({
selector: 'app-dataset-load',
templateUrl: './dataset-load.component.html',
styleUrls: ['./dataset-load.component.css']
})
export class DatasetLoadComponent {
@Output() loaded = new EventEmitter<string>();
delimiter: string = "";
delimiterOptions: Array<string> = [",", ";", "\t", "razmak", "|"]; //podrazumevano ","
hasHeader: boolean = true;
slice: string = "";
csvRecords: any[] = [];
files: any[] = [];
rowsNumber: number = 0;
colsNumber: number = 0;
dataset: Dataset;
constructor(private ngxCsvParser: NgxCsvParser) {
this.dataset = new Dataset();
}
@ViewChild('fileImportInput', { static: false }) fileImportInput: any;
changeListener($event: any): void {
this.files = $event.srcElement.files;
this.update();
}
update() {
if (this.files.length < 1)
return;
this.ngxCsvParser.parse(this.files[0], { header: false, delimiter: (this.delimiter == "razmak") ? " " : (this.delimiter == "") ? "," : this.delimiter})
.pipe().subscribe((result) => {
console.log('Result', result);
if (result.constructor === Array) {
this.csvRecords = result;
if (this.hasHeader)
this.rowsNumber = this.csvRecords.length - 1;
else
this.rowsNumber = this.csvRecords.length;
this.colsNumber = this.csvRecords[0].length;
this.dataset.header = this.csvRecords[0];
this.loaded.emit("loaded");
}
}, (error: NgxCSVParserError) => {
console.log('Error', error);
});
}
}
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