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Version: 8.0.3

cache

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The sos.offline API groups together methods used to download and save arbitrary files, which can be accessed even if the device is offline.

warning

Emulator has certain limitations while handling offline files. Read more here

Methods​

decompressFile()​

The decompressFile() decompresses the file specified by uid into a new file specified by destinationUid.

decompressFile(uid: string, destinationUid: string, method: 'zip'): Promise<void>;

Possible errors​

The method throws an error if the uid does not exist.

deleteContent()​

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The deleteContent() method removes the value specified by uid` key.

deleteContent(uid: string): Promise<void>;

deleteFile()​

The deleteFile() method removes the file specified by uid.

deleteFile(uid: string): Promise<void>;

Possible errors​

The method throws an error if the uid does not exist.

getChecksumFile()​

The getChecksumFile() computes a checksum of the file specified by uid.

getChecksumFile(uid: string, hashType: HashAlgorithm): Promise<string>;

Possible errors​

The method throws an error if the uid does not exist or the hashing algorithm is not supported.

listContents()​

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The listContent() method lists all values saved by saveContent() method.

listContents(): Promise<string[]>;

listFiles()​

The listFiles() method list all currently cached files.

listFiles(): Promise<string[]>;

loadContent()​

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The loadContent() method gets the value specified by uid, which was previously saved by saveContent().

loadContent(uid: string): Promise<string>;

loadFile()​

The loadFile() method loads cached file, which was previously saved by saveFile() or loadOrSaveFile() methods.

loadFile(uid: string): Promise<IFile>;

Possible errors​

The method throws an error if the uid does not exists

loadOrSaveFile()​

The loadOrSaveFile() method loads the file from the cache, or downloads it if it's not already cached.

loadOrSaveFile(uid: string, uri: string, headers?: {
    [key: string]: string;
}): Promise<IFile>;

saveContent()​

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The saveContent() method saves a string value to the cache.

saveContent(uid: string, content: string): Promise<void>;

saveFile()​

The saveFile() method downloads file from uri and saves it to the offline cache.

warning

uid should have the same file extension (e.g.: mp4, svg, jpg) as the original file.

saveFile(uid: string, uri: string, headers?: {
    [key: string]: string;
}): Promise<void>;

Possible errors​

The method throws an error if the network request fails or a file with the same uid is already cached

validateChecksumFile()​

The validateChecksumFile() method validates whether the file, specified by uid, has the correct checksum.

validateChecksumFile(uid: string, hash: string, hashType: HashAlgorithm): Promise<boolean>;

Possible errors​

The method throws an error if the uid does not exist or the hashing algorithm is not supported.