af83/chouette-core

import PDFObject from 'pdfobject'
import { isNil } from 'lodash'

export class InvalidContainerError extends Error {}
export class InvalidDocumentError extends Error {}
export class ContentTypeNotSupportedError extends Error {}

export default class FileRender {
    static width = 500
    static height = 500

    static call(container, { contentType, url } = {}) {
        if (container?.constructor?.name !== 'HTMLDivElement') {
            throw new InvalidContainerError('container must be a HTMLDivElement')
        }

        if (isNil(url)) {
            throw new InvalidDocumentError('url must be provided')
        }

        const { width, height } = this

        switch (contentType) {
            case 'application/pdf':
                PDFObject.embed(url, container, { width: `${width}px`, height: `${height}px` })
                break
            case 'image/jpeg':
            case 'image/png':
                const img = new Image(width, height)
                img.src = url
                container.append(img)
                break
        }
    }
}