rodo/rodo.rkt

137 lines
4.3 KiB
Racket
Executable File

#! /usr/bin/env racket
#lang racket/base
(require racket/vector)
(define program-name "rodo")
(define program-directory ".rodo/")
(define program-path "~/")
(define (d-hash-ref hash-list key)
(display (hash-ref messages key)))
(define (d-vector-ref args key)
(display (vector-ref args key)))
(define messages
(hash
'incorrect-usage (string-append
"> For usage type "
"`" program-name " -h`"
" or "
"`" program-name " --help`\n")
'creating (string-append
"> Creating a "
program-directory
" folder in "
program-path " ...\n")
'creation-error (string-append
"> Error: Could not create "
program-directory
" in "
program-path ".\n"
"> This may be due to directory permissions\n")
'already-exists (string-append
"> "
program-directory
" folder already exists in "
program-path "\n")
'successfully-created (string-append
"> "
program-path program-directory
" has been successfully created\n")
'not-found (string-append
"> "
program-directory
" has not been setup in "
program-path "\n"
"> Would you like to set it up now? [y/n]\n")
'choose-y/n "> Error: Please choose y or n\n"
'item-added-prefix "> Added "
'item-added-suffix " to list\n"
'item-removed-prefix "> Removed "
'item-removed-suffix " from list\n"
'terminating (string-append "> Exiting " program-name " ...\n")))
;; some possible user-input related "mistakes" that
;; will be accepted for input
(define y/n
(hash
'yes '("yes" "Yes" "y" "Y")
'no '("no" "No" "n" "N")))
(define (open/create-file list-name)
(let ([path (expand-user-path (string-append
program-path
program-directory
list-name))])
(let ([opened-file (open-output-file path
#:mode 'text
#:exists 'can-update)])
(close-output-port opened-file))))
(define (create-folder)
(make-directory (expand-user-path (string-append
program-path
program-directory))))
(define (check-for-folder)
(directory-exists? (expand-user-path (string-append
program-path
program-directory))))
;; prompt user for file initial file creation
(define (prompt-user chosen-message)
(d-hash-ref messages chosen-message)
(display "> ")
(let ([user-input (read-line)])
(cond
[(member user-input (hash-ref y/n 'yes))
(d-hash-ref messages 'creating)
(create-folder)
(if (check-for-folder)
(d-hash-ref messages 'successfully-created)
(d-hash-ref messages 'creation-error))]
[(member user-input (hash-ref y/n 'no))
(d-hash-ref messages 'terminating)]
[else
(prompt-user 'choose-y/n)])))
(define (check-args args)
(let ([args-length (vector-length args)])
(cond
[(and (equal? args-length 2) (equal? (vector-member "add" args) 0))
(d-hash-ref messages 'item-added-prefix)
(d-vector-ref args 1)
(d-hash-ref messages 'item-added-suffix)]
[(and (equal? args-length 2) (equal? (vector-member "remove" args) 0))
(d-hash-ref messages 'item-removed-prefix)
(d-vector-ref args 1)
(d-hash-ref messages 'item-removed-suffix)]
[(and (equal? args-length 1) (equal? (vector-member "init" args) 0))
(todo-list-exist?)]
[else (d-hash-ref messages 'incorrect-usage)])))
;; does the file exist that holds the list(s?)
(define (todo-list-exist?)
(if (check-for-folder)
(d-hash-ref messages 'already-exists)
(prompt-user 'not-found)))
(define (main)
(check-args (current-command-line-arguments)))
(main)