LogErr logs the given error

* GetDownloadFilePathName returns the absolute path of the file present in downloads folder takes fileName as argument */

* Fetch downlods a file to downloads folder from the given url, and names it as given fileName */

checkFileExistsAndAppendToBuffer checks if the given output file exits, then appends the path to buffer.

DeleteFile deletes the given file

* FileIDGen returns an unique videoID and appends the fileExtension to it, it takes the fileExtensionas parameter */

* GetOutputFilePathName returns the absolute path of the file present in output folder takes fileName as argument */

IsFileValid checks if the file is present on that path, returns true, if file is there else false

createDirPath creates a directory at the given path

GetQueryHash returns the md5 hash of the query string

Init function will perform all route operations

RemoveExtensionFromFile returns the fileName without the extension, if fileName doesn't end with ext, it returns the fileName

sortString sorts the given string

StringToArgsGenerator takes a map of arguments, and it returns the command line form of arguments

WrapStringInQuotes returns the string wrapped in quotes

deleteVideoFiles deletes the videos given in the path

generateMPD (Media Presentation Description), generates the XML description file for the given output path.

generateThumbnail generates a thumbnail at given timestamp, from the target file and write it to output file

Returns input based on if the watermark is needed or not

Returns an overlay of watermark which can be used in Filter

* MakeRequest is a helper function that creates an HTTP request and sends it to the router, returning the response that the router returns. It takes i

router is a function that returns a new instance of the Gin router with a single route defined:

* TestPing is a test function that sends a GET request to the "/api/v1/ping" route and verifies that the response has a 200 OK status code and a body