{"version":3,"file":"image.js","names":["_parseURL","imageUrl","splittedURL","split","urlPart","paramsPart","_getTag","img","tagName","toLowerCase","getAttributesOfNewImage","origFormat","match","slice","imageFormat","replace","imageOriginalFormat","replaceImageAttributes","imgSrc","originalImg","newUrl","initialUrl","RegExp","url","format","changeImage","imageToUpdate","originalImageData","newImageSrc","tag","updatedData","originalImgUrl","baseUrl","updateAttr","attr","srcset","setAttribute","src","a","getAttributesOfOriginalImage","image","imageSrc","getAttribute","replaceImageSource","element","pattern","replacement","picture","parentElement","nodeName","querySelectorAll","forEach","source","getVideoThumbnail","videoURL","Promise","resolve","canvas","document","createElement","video","muted","autoplay","onloadeddata","ctx","getContext","width","videoWidth","height","videoHeight","drawImage","pause","toDataURL","setters","execute"],"sources":["toolbox/image.js"],"sourcesContent":["/**\n * Library is used for work with images\n */\n\n/**\n * Split URL into basepath and params parts. Returns info as object\n * @param {object} imageUrl - source of image\n * @return {object} - basepath and params\n */\nfunction _parseURL(imageUrl) {\n    const splittedURL = imageUrl.split('?') || [];\n    const urlPart = splittedURL[0] || '';\n    const paramsPart = splittedURL[1] || '';\n    return { urlPart, paramsPart };\n}\n\n/**\n * Returns HTML tag name of HTML element\n * @param {HTMLElement} img - Image element\n * @returns {string} - get tag type\n */\nfunction _getTag(img) {\n    return img ? img.tagName.toLowerCase() : '';\n}\n\n/**\n * Prepare object with attributes of new image which should be shown.\n * @param {string} imageUrl - source of new image\n * @return {object} - config object that could be used to replace img attr string\n */\nexport function getAttributesOfNewImage(imageUrl) {\n    const { urlPart, paramsPart } = _parseURL(imageUrl);\n    let origFormat = paramsPart ? paramsPart.match(/sfrm=\\w+/g) : '';\n    origFormat = origFormat ? (origFormat[0]).slice(5) : '';\n    let imageFormat = urlPart && urlPart.match(/(\\.\\w+)$/);\n    imageFormat = imageFormat ? (imageFormat[0]).slice(1) : '';\n\n    return {\n        imageFormat,\n        imageUrl: urlPart.replace(/(\\.\\w+)$/, ''),\n        imageOriginalFormat: origFormat,\n    };\n}\n/**\n * Prepare object with initial image attributes. It would be used as template for replace.\n * @param {HTMLElement} image - link to DOM-node of the image\n * @return {object} - object with image attributes strings and baseUrl\n */\nexport function getAttributesOfOriginalImage(image) {\n    const imageSrc = image.getAttribute('src');\n    const { urlPart } = _parseURL(imageSrc);\n    return {\n        srcset: image.getAttribute('srcset'),\n        src: imageSrc,\n        baseUrl: urlPart.replace(/(\\.\\w+)$/, ''),\n    };\n}\n\n/**\n * Update attributes of imageUrl with new attributes passed as parameters.\n * @param {string} imgSrc - initial string parts of what would be replaced\n * @param {object} originalImg - originalImg data\n * @param {string} newUrl - url of the image in full path without image extension\n * @param {string} imageOriginalFormat - original format of the image\n * @return {string} - attribute string with changed image URL\n */\nexport function replaceImageAttributes(imgSrc, originalImg, newUrl) {\n    const initialUrl = new RegExp(originalImg.url, 'g');\n    imgSrc = imgSrc.replace(initialUrl, newUrl);\n\n    if (originalImg.format !== '') {\n        imgSrc = imgSrc.replace(/&sfrm=\\w+/g, `&sfrm=${originalImg.format}`);\n    }\n    return imgSrc;\n}\n/**\n * Returns HTML tag name of HTML element\n * @param {HTMLElement} imageToUpdate - Element to be updated\n * @param {Object} originalImageData - Data of the image URL\n * @param {string} newImageSrc - Source of the new image\n */\nexport function changeImage(imageToUpdate, originalImageData, newImageSrc) {\n    const tag = _getTag(imageToUpdate);\n    if (tag === 'img' && newImageSrc) {\n        const updatedData = getAttributesOfNewImage(newImageSrc);\n        const originalImgUrl = originalImageData.baseUrl;\n        /**\n         * Update image attributes\n         * @param {string} attr -\n         * @returns {string} - URL of the replaced image\n         */\n        const updateAttr = function updateAttr(attr) {\n            return replaceImageAttributes(\n                attr,\n                {\n                    url: originalImgUrl,\n                    format: updatedData.imageFormat,\n                },\n                updatedData.imageUrl,\n            );\n        };\n\n        // In case of images without source sets (ex: placeholder), do not perform setting of 'srcset' attribute\n        if (originalImageData.srcset) {\n            imageToUpdate.setAttribute('srcset', updateAttr(originalImageData.srcset));\n        }\n\n        imageToUpdate.setAttribute('src', updateAttr(originalImageData.src));\n    }\n}\n/**\n * Replace image source\n * Replace all mathers of pattern with replacement for image.\n * This support img and picture tag.\n * For picture tag updates srcset attribute of source nodes.\n * For img tag updates srcset and src attributes.\n * @param {HTMLElement} element - img element\n * @param {String} pattern - search pattern\n * @param {String} replacement - replacement string\n */\nexport function replaceImageSource(element, pattern, replacement) {\n    const picture = element.parentElement;\n    // check if we have a picture over img element\n    if (picture.nodeName === 'PICTURE') {\n        // replace srcset for all source tags\n        picture.querySelectorAll('source').forEach((source) => {\n            source.setAttribute('srcset', source.getAttribute('srcset').replace(new RegExp(pattern, 'g'), replacement));\n        });\n    }\n\n    // update img tag\n    changeImage(element, {\n        baseUrl: pattern,\n        src: element.getAttribute('src'),\n        srcset: element.getAttribute('srcset'),\n    }, replacement);\n}\n\n/**\n * Returns video thumbnail URL on resolve\n * @param {String} videoURL video source URL\n * @returns {Promise} returns video thumbnail URL on resolve\n */\nexport function getVideoThumbnail(videoURL) {\n    return new Promise((resolve) => {\n        const canvas = document.createElement('canvas');\n        const video = document.createElement('video');\n\n        video.muted = true;\n        video.autoplay = true;\n        video.src = videoURL;\n\n        video.onloadeddata = () => {\n            const ctx = canvas.getContext('2d');\n\n            canvas.width = video.videoWidth;\n            canvas.height = video.videoHeight;\n\n            ctx.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);\n            video.pause();\n            return resolve(canvas.toDataURL('image/png'));\n        };\n    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