/**
 * AWS File upload 
 * @extends FileUpload
 * @author Nike
 * @version 1.0
 * @category MyEic
 * @subcategory Libraries
 */
class AwsFileUpload extends FileUpload { 
    constructor(el, options) { 
        super(el, options);
        this.filename = options.filename
        this.pic = options.pic
        this.pid = options.pid
    }

	mergeOptionsNode(target, source) {
		for (let option in source) {
			if(typeof source[option] === 'object' && !Array.isArray(source[option]) && (option in target) && !(target[option] instanceof(Element))) {
				this.mergeOptionsNode(target[option], source[option]);
			} else {
				target[option] = source[option];
			}	
		}
	}

    async onBeforeUploadOneStart(file) {
        let response
        let ext = file.name.substring(file.name.lastIndexOf('.')+1) //Get the extension from the user file name

        if((!this.filename) || (this.filename != this.createFileName(this.pic, this.pid)+'.'+ext)) { // Carefull: extension could change !
            this.filename = this.createFileName(this.pic, this.pid)+'.'+ext
        }
        let uri = this.options.getSignedUrl+this.filename
        try {
            response = await fetch(uri, {
                method: this.options.getSignedMethod,
                headers: {  'Accept': 'application/json', 
                            'Content-Type': file.type,
                        },
                credentials: 'include',
            }).then( response => response.json())
            let payload = response.payload
            this.options.uploadUrl = payload.url // Signed url is here
            this.options.uploadMethod = 'PUT'
        } catch(debugMessage) {
            console.warn('Error getting upload signed URL:',debugMessage)
            return(false)
        }        
        return(true)
    }

    createFileName(pic, pid) { return(pic+'_'+pid+'_'+crypto.randomUUID()) }
   
}