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{ Platform } from '@unimodules/core';\n\nimport { getAssetByID } from './AssetRegistry';\nimport * as AssetSources from './AssetSources';\nimport * as AssetUris from './AssetUris';\nimport { getEmbeddedAssetUri } from './EmbeddedAssets';\nimport * as ImageAssets from './ImageAssets';\nimport { downloadAsync, IS_ENV_WITH_UPDATES_ENABLED } from './PlatformUtils';\nimport resolveAssetSource from './resolveAssetSource';\n\ntype AssetDescriptor = {\n name: string;\n type: string;\n hash?: string | null;\n uri: string;\n width?: number | null;\n height?: number | null;\n};\n\ntype DownloadPromiseCallbacks = {\n resolve: () => void;\n reject: (error: Error) => void;\n};\n\nexport type AssetMetadata = AssetSources.AssetMetadata;\n\nexport class Asset {\n static byHash = {};\n static byUri = {};\n\n name: string;\n type: string;\n hash: string | null = null;\n uri: string;\n localUri: string | null = null;\n width: number | null = null;\n height: number | null = null;\n downloading: boolean = false;\n downloaded: boolean = false;\n _downloadCallbacks: DownloadPromiseCallbacks[] = [];\n\n constructor({ name, type, hash = null, uri, width, height }: AssetDescriptor) {\n this.name = name;\n this.type = type;\n this.hash = hash;\n this.uri = uri;\n\n if (typeof width === 'number') {\n this.width = width;\n }\n if (typeof height === 'number') {\n this.height = height;\n }\n\n if (hash) {\n this.localUri = getEmbeddedAssetUri(hash, type);\n if (this.localUri) {\n this.downloaded = true;\n }\n }\n\n if (Platform.OS === 'web') {\n if (!name) {\n this.name = AssetUris.getFilename(uri);\n }\n if (!type) {\n this.type = AssetUris.getFileExtension(uri);\n }\n }\n }\n\n static loadAsync(moduleId: number | number[] | string | string[]): Promise<Asset[]> {\n const moduleIds = Array.isArray(moduleId) ? moduleId : [moduleId];\n return Promise.all(moduleIds.map(moduleId => Asset.fromModule(moduleId).downloadAsync()));\n }\n\n static fromModule(virtualAssetModule: number | string): Asset {\n if (typeof virtualAssetModule === 'string') {\n return Asset.fromURI(virtualAssetModule);\n }\n\n const meta = getAssetByID(virtualAssetModule);\n if (!meta) {\n throw new Error(`Module \"${virtualAssetModule}\" is missing from the asset registry`);\n }\n\n // Outside of the managed env we need the moduleId to initialize the asset\n // because resolveAssetSource depends on it\n if (!IS_ENV_WITH_UPDATES_ENABLED) {\n const { uri } = resolveAssetSource(virtualAssetModule);\n const asset = new Asset({\n name: meta.name,\n type: meta.type,\n hash: meta.hash,\n uri,\n width: meta.width,\n height: meta.height,\n });\n\n // TODO: FileSystem should probably support 'downloading' from drawable\n // resources But for now it doesn't (it only supports raw resources) and\n // React Native's Image works fine with drawable resource names for\n // images.\n if (Platform.OS === 'android' && !uri.includes(':') && (meta.width || meta.height)) {\n asset.localUri = asset.uri;\n asset.downloaded = true;\n }\n\n Asset.byHash[meta.hash] = asset;\n return asset;\n }\n\n return Asset.fromMetadata(meta);\n }\n\n static fromMetadata(meta: AssetMetadata): Asset {\n // The hash of the whole asset, not to be confused with the hash of a specific file returned\n // from `selectAssetSource`\n const metaHash = meta.hash;\n if (Asset.byHash[metaHash]) {\n return Asset.byHash[metaHash];\n }\n\n const { uri, hash } = AssetSources.selectAssetSource(meta);\n const asset = new Asset({\n name: meta.name,\n type: meta.type,\n hash,\n uri,\n width: meta.width,\n height: meta.height,\n });\n Asset.byHash[metaHash] = asset;\n return asset;\n }\n\n static fromURI(uri: string): Asset {\n if (Asset.byUri[uri]) {\n return Asset.byUri[uri];\n }\n\n // Possibly a Base64-encoded URI\n let type = '';\n if (uri.indexOf(';base64') > -1) {\n type = uri.split(';')[0].split('/')[1];\n } else {\n const extension = AssetUris.getFileExtension(uri);\n type = extension.startsWith('.') ? extension.substring(1) : extension;\n }\n\n const asset = new Asset({\n name: '',\n type,\n hash: null,\n uri,\n });\n\n Asset.byUri[uri] = asset;\n\n return asset;\n }\n\n async downloadAsync(): Promise<this> {\n if (this.downloaded) {\n return this;\n }\n if (this.downloading) {\n await new Promise((resolve, reject) => {\n this._downloadCallbacks.push({ resolve, reject });\n });\n return this;\n }\n this.downloading = true;\n\n try {\n if (Platform.OS === 'web') {\n if (ImageAssets.isImageType(this.type)) {\n const { width, height, name } = await ImageAssets.getImageInfoAsync(this.uri);\n this.width = width;\n this.height = height;\n this.name = name;\n } else {\n this.name = AssetUris.getFilename(this.uri);\n }\n }\n this.localUri = await downloadAsync(this.uri, this.hash, this.type, this.name);\n\n this.downloaded = true;\n this._downloadCallbacks.forEach(({ resolve }) => resolve());\n } catch (e) {\n this._downloadCallbacks.forEach(({ reject }) => reject(e));\n throw e;\n } finally {\n this.downloading = false;\n this._downloadCallbacks = [];\n }\n return this;\n }\n}\n"]} |