{
  "version": 3,
  "sources": ["../../../lib.shared.faas/constants.ts", "../../../lib.web.resources/thumbnails.ts"],
  "sourcesContent": ["export const supported_thumbnail_dims = [128, 256, 512, 1024, 1920] as readonly number[]\n\nexport const most_common_thumbnail_dims = [\n    [128, 128],\n    [1024, 512],\n    [1920, 1920],\n] as readonly number[][]\n\nexport const broken_image_svg =\n    '<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\"><path d=\"M21,5V11.59L18,8.58L14,12.59L10,8.59L6,12.59L3,9.58V5A2,2 0 0,1 5,3H19A2,2 0 0,1 21,5M18,11.42L21,14.43V19A2,2 0 0,1 19,21H5A2,2 0 0,1 3,19V12.42L6,15.41L10,11.41L14,15.41\" style=\"fill:red\"/></svg>'\n", "import {BlobUID, BoardStyleStruct, as_BlobUID} from \"@cling/lib.shared.model\"\nimport {supported_thumbnail_dims} from \"@cling/lib.shared.faas/constants\"\nimport {not_null} from \"@cling/lib.shared.utils\"\nimport {report_info} from \"@cling/lib.shared.debug\"\n\nlet _thumbnail_url: (props: {\n    blob_uid: BlobUID\n    max_thumbnail_width: number\n    max_thumbnail_height: number\n}) => string\n\nlet _image_cache_thrash_index: (blob_uid: BlobUID) => number\n\nexport type ProvisionalThumbnail = {\n    blob_uid: BlobUID\n    mime_type: string\n    file: File\n    width: number\n    height: number\n    url?: string\n}\n\nconst provisional_thumbnails = new Map<BlobUID, ProvisionalThumbnail>()\n\nexport async function add_provisional_thumbnail(thumbnail: ProvisionalThumbnail) {\n    provisional_thumbnails.set(thumbnail.blob_uid, thumbnail)\n    try {\n        const cache = await caches.open(\"provisional_thumbnails\")\n        await cache.put(thumbnail.blob_uid, new Response(thumbnail.file))\n    } catch (error) {\n        report_info(\"Failed to cache provisional thumbnail -- ignoring\", error)\n    }\n}\n\nexport async function remove_provisional_thumbnail(blob_uid: BlobUID): Promise<boolean> {\n    const provisional = provisional_thumbnails.get(blob_uid)\n    if (provisional) {\n        if (provisional.url) {\n            URL.revokeObjectURL(provisional.url)\n        }\n        provisional_thumbnails.delete(blob_uid)\n    }\n    try {\n        const cache = await caches.open(\"provisional_thumbnails\")\n        await cache.delete(blob_uid)\n    } catch (error) {\n        report_info(\"Failed to delete provisional thumbnail from cache -- ignoring\", error)\n    }\n    return !!provisional\n}\n\n/**\n * Returns an empty string if no background image is set.\n */\nexport function board_background_image_url(\n    board_style: BoardStyleStruct,\n    {dim}: {dim: 128 | 1920} = {dim: 1920},\n): string {\n    if (board_style.background_image_url) {\n        let url = board_style.background_image_url\n        if (dim === 128) {\n            url = url.replace(\"/photos/2000w/\", \"/photos/200w/\")\n        }\n        return url\n    }\n    if (board_style.background_image_blob) {\n        return thumbnail_url({\n            blob_uid: board_style.background_image_blob.uid,\n            width: dim,\n            height: dim,\n        })\n    }\n    return \"\"\n}\n\nexport async function init(args: {\n    thumbnail_url: (props: {\n        blob_uid: BlobUID\n        max_thumbnail_width: number\n        max_thumbnail_height: number\n    }) => string\n    image_cache_thrash_index: (blob_uid: BlobUID) => number\n    skip_cache?: boolean\n}) {\n    _thumbnail_url = args.thumbnail_url\n    _image_cache_thrash_index = args.image_cache_thrash_index\n    if (args.skip_cache) {\n        return\n    }\n    try {\n        const cache = await caches.open(\"provisional_thumbnails\")\n        const keys = await cache.keys()\n        for (const key of keys) {\n            const response = await cache.match(key)\n            if (response) {\n                const file = await response.blob()\n                const blob_uid = as_BlobUID(key.url.slice(key.url.lastIndexOf(\"/\") + 1))\n                provisional_thumbnails.set(blob_uid, {\n                    blob_uid,\n                    mime_type: file.type,\n                    file: file as File,\n                    width: 0,\n                    height: 0,\n                })\n            }\n        }\n    } catch (error) {\n        report_info(\"Failed to read provisional thumbnails from cache -- ignoring\", error)\n    }\n}\n\nexport function thumbnail_url({\n    blob_uid,\n    width,\n    height,\n}: {\n    blob_uid: BlobUID\n    width: number\n    height: number\n}): string {\n    not_null(_thumbnail_url, \"`init` must be called first\")\n    const provisional = provisional_thumbnails.get(blob_uid)\n    if (provisional) {\n        if (!provisional.url) {\n            provisional.url = URL.createObjectURL(provisional.file)\n        }\n        return provisional.url\n    }\n    const thumbnail_height =\n        supported_thumbnail_dims.find((dim) => height <= dim) ||\n        supported_thumbnail_dims[supported_thumbnail_dims.length - 1]\n    const thumbnail_width =\n        supported_thumbnail_dims.find((dim) => width <= dim) ||\n        supported_thumbnail_dims[supported_thumbnail_dims.length - 1]\n    const url = _thumbnail_url({\n        blob_uid,\n        max_thumbnail_width: thumbnail_width,\n        max_thumbnail_height: thumbnail_height,\n    })\n    const thrash = _image_cache_thrash_index(blob_uid)\n    if (thrash) {\n        return `${url}${url.includes(\"?\") ? \"&\" : \"?\"}_thrash=${thrash}`\n    }\n    return url\n}\n\nexport async function thumbnail_url_preloaded({\n    blob_uid,\n    width,\n    height,\n}: {\n    blob_uid: BlobUID\n    width: number\n    height: number\n}): Promise<string> {\n    const url = thumbnail_url({blob_uid, width, height})\n    await new Promise((resolve) => {\n        const img = new Image()\n        img.onload = resolve\n        img.onerror = resolve\n        img.src = url\n    })\n    return url\n}\n\nexport function is_provisional_thumbnail_url(url: string): boolean {\n    return url.startsWith(\"blob:\")\n}\n"],
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  "names": ["supported_thumbnail_dims", "_thumbnail_url", "_image_cache_thrash_index", "provisional_thumbnails", "add_provisional_thumbnail", "thumbnail", "error", "report_info", "__name", "remove_provisional_thumbnail", "blob_uid", "provisional", "board_background_image_url", "board_style", "dim", "url", "thumbnail_url", "init", "args", "cache", "keys", "key", "response", "file", "as_BlobUID", "width", "height", "not_null", "thumbnail_height", "supported_thumbnail_dims", "thumbnail_width", "thrash", "thumbnail_url_preloaded", "resolve", "img", "is_provisional_thumbnail_url"]
}