import { __, I } from "./globals";

export class Server_Api {

    url: string|undefined;
    id: number|undefined;

    init( server_url: string, server_id: number ){
        this.url = server_url;
        this.id = server_id;
    }

    is_init(): boolean {
        return this.url !== undefined && this.id !== undefined;
    }

    private build_url( call: string ): string {

        let new_url: string = this.url + "upload.php";
        if( call === "check_existence" )
            new_url += "?checkExistence=true";

        return new_url;
    }

    async check_file_existence( filename: string ): Promise<boolean> {

        return new Promise( ( resolve, reject ) => {

            const XHR: XMLHttpRequest = new XMLHttpRequest();
            XHR.open( 'POST', this.build_url( 'check_existence' ), true );

            let form_data: FormData = new FormData();
            form_data.append( "filename", filename );
            form_data.append( 'reservedPostID', I.reserved_post_id );
            form_data.append( 'custom_post_type', I.custom_post_type );

            XHR.onload = () => {
                resolve( XHR.responseText === 'exists' );
            }
            XHR.onerror = () => {
                reject( false );
            }

            XHR.send( form_data );

        });

    }
}