Major code refactoring (#164)

* Added Chromium caching of identity provider cookies

* Moved token expiry check in standalone method

* Created refreshSession function

* Session is now refreshed if the token expires

* Linting fixes

* Removed debug console.log()

* Added CC support

* Created function to prompt user for download parameters (interactive mode)

* Fix data folder for puppeteer

* Fixed multiple session error

* Fix token expire time

* Moved session refreshing to a more sensible place

* Changed Metadata name to Video (to better reflect the data structure)

* Complete CLI refactoring

* Removed useless sleep function

* Added outDir check from CLI

* Complete input parsing refactoring (both inline and file)

* Fixed and improved tests to work with the new input parsing

* Moved and improved output path generation to videoUtils

* Main code refactoring, added outpath to video type

* Minor changes in spacing and type definition style

* Updated readme after code refactoring

* Fix if inputFile doesn't start with url on line 1

* Minor naming change

* Use module 'winston' for logging

* Created logge, changed all console.log and similar to use the logger

* Added verbose logging, changed posterUrl property name on Video type

* Moved GUID extraction to input parsing

* Added support for group links

* Fixed test after last input parsing update

* Removed debug proces.exit()

* Changed from desc to asc order for group videos

* Updated test to reflect GUIDs output after parsing

* Added couple of comments and restyled some imports

* More readable verbose GUIDs logging

* Removed unused errors

* Temporary fix for timeout not working in ApiClient

* Explicit class member accessibility

* Defined array naming schema to be Array<T>

* Defined type/interface schema to be type only

* A LOT of type definitions

src/Errors.ts

@@ -1,64 +1,47 @@
-interface IError {
-    [key: number]: string
-}
-
 export const enum ERROR_CODE {
-    NO_ERROR,
     UNHANDLED_ERROR,
-    MISSING_FFMPEG,
     ELEVATED_SHELL,
-    INVALID_OUTPUT_DIR,
-    INVALID_INPUT_URLS,
-    OUTDIRS_URLS_MISMATCH,
-    INVALID_VIDEO_ID,
-    INVALID_VIDEO_GUID,
+    CANCELLED_USER_INPUT,
+    MISSING_FFMPEG,
     UNK_FFMPEG_ERROR,
+    INVALID_VIDEO_GUID,
     NO_SESSION_INFO
 }
 
-// TODO: create better errors descriptions
-export const Error: IError = {
-    [ERROR_CODE.NO_ERROR]:           'Clean exit with code 0',
 
+export const errors: {[key: number]: string} = {
     [ERROR_CODE.UNHANDLED_ERROR]:       'Unhandled error!\n' +
                                         'Timeout or fatal error, please check your downloads directory and try again',
 
     [ERROR_CODE.ELEVATED_SHELL]:        'Destreamer cannot run in an elevated (Administrator/root) shell.\n' +
                                         'Please run in a regular, non-elevated window.',
 
-    [ERROR_CODE.INVALID_OUTPUT_DIR]:    'Unable to create output directory',
+    [ERROR_CODE.CANCELLED_USER_INPUT]:  'Input was cancelled by user',
 
     [ERROR_CODE.MISSING_FFMPEG]:        'FFmpeg is missing!\n' +
                                         'Destreamer requires a fairly recent release of FFmpeg to download videos',
 
     [ERROR_CODE.UNK_FFMPEG_ERROR]:      'Unknown FFmpeg error',
 
-    [ERROR_CODE.INVALID_INPUT_URLS]:    'No valid URL from input',
-
-    [ERROR_CODE.OUTDIRS_URLS_MISMATCH]: 'Output directories and URLs mismatch!\n' +
-                                        'You must input the same number of URLs and output directories',
-
-    [ERROR_CODE.INVALID_VIDEO_ID]:      'Unable to get video ID from URL',
-
     [ERROR_CODE.INVALID_VIDEO_GUID]:    'Unable to get video GUID from URL',
 
     [ERROR_CODE.NO_SESSION_INFO]:       'Could not evaluate sessionInfo on the page'
 };
 
+
 export const enum CLI_ERROR {
-    GRACEFULLY_STOP           = ' ', // gracefully stop execution, yargs way
+    MISSING_INPUT_ARG           = 'You must specify a URLs source. \n' +
+                                'Valid options are -i for one or more URLs separated by space or -f for input file. \n',
 
-    MISSING_REQUIRED_ARG      = 'You must specify a URLs source.\n' +
-                                'Valid options are -i for one or more URLs separated by space or -f for URLs from file.',
+    INPUT_ARG_CONFLICT          = 'Too many URLs sources specified! \n' +
+                                'Please specify a single source, either -i or -f \n',
 
-    VIDEOURLS_ARG_CONFLICT    = 'Too many URLs sources specified!\n' +
-                                'Please specify a single source, either -i or -f (URLs from file)',
+    INPUTFILE_WRONG_EXTENSION   = 'The specified inputFile has the wrong extension \n' +
+                                'Please make sure to use path/to/filename.txt when useing the -f option \n',
 
-    OUTPUTDIR_ARG_CONFLICT    = 'Too many output arguments specified!\n' +
-                                'Please specify a single output argument, either -o or --outputDirectories.',
+    INPUTFILE_NOT_FOUND         = 'The specified inputFile does not exists \n'+
+                                'Please check the filename and the path you provided \n',
 
-    FILE_INPUT_VIDEOURLS_ARG  = 'Wrong input for option --videoUrls.\n' +
-                                'To read URLs from file, use --videoUrlsFile option.',
-
-    INPUT_URLS_FILE_NOT_FOUND = 'Input URL list file not found.'
-}
+    INVALID_OUTDIR              = 'Could not create the default/specified output directory \n' +
+                                'Please check directory and permissions and try again. \n'
+}