Add plug update reminder

.gitignore

@@ -10,6 +10,7 @@ vim/vim.symlink/bundle
 
 nvim/nvim.symlink/plugged
 nvim/nvim.symlink/.netrwhist
+nvim/nvim.symlink/plugged-update
 
 zsh/zsh.symlink/liquidprompt
 zsh/zsh.symlink/zsh-completions

nvim/nvim.symlink/init.vim

@@ -238,6 +238,8 @@ nnoremap <leader>ev :call OpenFileWindow($MYVIMRC)<cr>
 
 " Second part, every time I write to $MYVIMRC, source it for me.
 augroup updateVimrc
+    autocmd!
+
     autocmd BufWritePost $MYVIMRC :source $MYVIMRC
 augroup END
 
@@ -355,6 +357,7 @@ endfunction
 
 augroup AutoMkdir
     autocmd!
+
     autocmd BufNewFile * :call EnsureDirExists()
 augroup END
 
@@ -364,6 +367,7 @@ endfunc
 
 augroup WindowManagement
     autocmd!
+
     autocmd WinEnter * call HandleWinEnter()
 augroup END
 
@@ -424,3 +428,54 @@ function! OpenFileWindow(file)
 
     return newwinnr
 endfunc
+
+" Remind me to update my plugins every so often. Run a function at startup
+" that checks when they were last updated.
+let g:plug_update_file = '~/dotfiles/nvim/nvim.symlink/plugged-update'
+" Update every two weeks
+let g:plug_update_timeout = 60 * 60 * 24 * 14
+
+function! NeedsUpdate(update_file)
+    let now = system('date +%s')
+
+    if !filereadable(a:update_file)
+        return v:true
+    endif
+
+    let contents = readfile(a:update_file)
+    if !exists('contents[0]')
+        return v:true
+    endif
+
+    let updated_at = contents[0]
+    let updated_threshold = now - g:plug_update_timeout
+
+    if updated_at == '' || updated_at < updated_threshold
+        return v:true
+    endif
+
+    return v:false
+endfunc
+
+function! UpdatePlugReminder()
+    let file = expand(g:plug_update_file)
+    let now = system('date +%s')
+    if NeedsUpdate(file)
+        let msg = "Your plugins haven't been updated for over two weeks."
+        let msg .= "\n" . "Update plugins now? : "
+        if input(msg, "Y") == "Y"
+            PlugUpdate
+            call writefile([now], file)
+        endif
+    endif
+endfunc
+
+function! StartUp()
+    call UpdatePlugReminder()
+endfunc
+
+augroup startUp
+    autocmd!
+
+    autocmd VimEnter * call StartUp()
+augroup END