import ko from 'ko';
import { pInt } from 'Common/Utils';
import { File } from 'Common/File';

import { AbstractModel } from 'Knoin/AbstractModel';

class ComposeAttachmentModel extends AbstractModel {
	/**
	 * @param {string} id
	 * @param {string} fileName
	 * @param {?number=} size = null
	 * @param {boolean=} isInline = false
	 * @param {boolean=} isLinked = false
	 * @param {string=} CID = ''
	 * @param {string=} contentLocation = ''
	 */
	constructor(id, fileName, size = null, isInline = false, isLinked = false, CID = '', contentLocation = '') {
		super();

		this.id = id;
		this.isInline = !!isInline;
		this.isLinked = !!isLinked;
		this.CID = CID;
		this.contentLocation = contentLocation;
		this.fromMessage = false;

		this.addObservables({
			fileName: fileName,
			size: size,
			tempName: '',

			progress: 0,
			error: '',
			waiting: true,
			uploading: false,
			enabled: true,
			complete: false
		});

		this.progressText = ko.computed(() => {
			const p = this.progress();
			return 0 === p ? '' : '' + (98 < p ? 100 : p) + '%';
		});

		this.progressStyle = ko.computed(() => {
			const p = this.progress();
			return 0 === p ? '' : 'width:' + (98 < p ? 100 : p) + '%';
		});

		this.title = ko.computed(() => {
			return this.error() || this.fileName();
		});

		this.friendlySize = ko.computed(() => {
			const localSize = this.size();
			return null === localSize ? '' : File.friendlySize(localSize);
		});

		this.mimeType = ko.computed(() => File.getContentType(this.fileName()));
		this.fileExt = ko.computed(() => File.getExtension(this.fileName()));
	}

	static fromAttachment(item)
	{
		const attachment = new ComposeAttachmentModel(
			item.download,
			item.fileName,
			item.estimatedSize,
			item.isInline,
			item.isLinked,
			item.cid,
			item.contentLocation
		);
		attachment.fromMessage = true;
		return attachment;
	}

	/**
	 * @param {FetchJsonComposeAttachment} json
	 * @returns {boolean}
	 */
	initByUploadJson(json) {
		let bResult = false;
		if (json) {
			this.fileName(json.Name);
			this.size(undefined === json.Size ? 0 : pInt(json.Size));
			this.tempName(undefined === json.TempName ? '' : json.TempName);
			this.isInline = false;

			bResult = true;
		}

		return bResult;
	}

	/**
	 * @returns {string}
	 */
	iconClass() {
		return File.getIconClass(this.fileExt(), this.mimeType())[0];
	}

	/**
	 * @returns {string}
	 */
	iconText() {
		return File.getIconClass(this.fileExt(), this.mimeType())[1];
	}
}

export { ComposeAttachmentModel, ComposeAttachmentModel as default };