with import <nixpkgs> { overlays = [ (import ../overlays/vim-cue.nix) ]; };

vim_configurable.customize {
  name = "vim";   # Specifies the vim binary name.
  # Below you can specify what usually goes into `~/.vimrc`
  vimrcConfig.customRC = ''
    " Preferred global default settings:
    set number                    " Enable line numbers by default
    set smartindent               " Automatically insert extra level of indentation
    set tabstop=4                 " Default tabstop
    set shiftwidth=4              " Default indent spacing
    set expandtab                 " Expand [TABS] to spaces
    syntax on                     " Enable syntax highlighting
    colorscheme gruvbox           " Set the default colour scheme
    set t_Co=256                  " Use 265 colors in vim
    set spell spelllang=en_au     " Defaul spell checking language
    set spellfile=~/.vim-spell.en.utf-8.add    " Add the spellfile
    hi clear SpellBad             " Clear any unwanted default settings
    hi SpellBad cterm=underline   " Set the spell checking highlight style
    hi SpellBad ctermbg=NONE      " Set the spell checking highlight background
    match ErrorMsg '\s\+$'        "

    let g:airline_powerline_fonts = 1   " Use powerline fonts
    let g:airline_theme='gruvbox'       " Set the airline theme

    "call togglebg#map("<F10>")   " Toggle background colour between dark|light

    set laststatus=2   " Set up the status line so it's coloured and always on

    " Removes trailing spaces:
    function! TrimWhiteSpace()
        %s/\s\+$//e
    endfunction

    nnoremap <silent> <Leader>RemoveTrailingWhiteSpace :call TrimWhiteSpace()<CR>
    autocmd FileWritePre    * :call TrimWhiteSpace()
    autocmd FileAppendPre   * :call TrimWhiteSpace()
    autocmd FilterWritePre  * :call TrimWhiteSpace()
    autocmd BufWritePre     * :call TrimWhiteSpace()
    "autocmd BufWrite        * :Autoformat

    " FIXME: Currently always set to dark due to issues with Termonad Solarized theme
    " Light during the day, dark during the night
    let hour = strftime("%H")
    if 7 <= hour && hour < 17
      set background=dark
      "hi Normal ctermbg=none              " Set a transparent background
      "let g:airline_solarized_bg='dark'   " Set the airline background
    else
      set background=dark
      "hi Normal ctermbg=none              " Set a transparent background
      "let g:airline_solarized_bg='dark'   " Set the airline background
    endif

    " Transparent editing of gpg encrypted files.
    " By Wouter Hanegraaff <wouter@blub.net>
    augroup encrypted
        au!

        " First make sure nothing is written to ~/.viminfo while editing an encrypted file.
        autocmd BufReadPre,FileReadPre      *.gpg set viminfo=
        " We don't want a swap file, as it writes unencrypted data to disk
        autocmd BufReadPre,FileReadPre      *.gpg set noswapfile
        " Switch to binary mode to read the encrypted file
        autocmd BufReadPre,FileReadPre      *.gpg set bin
        autocmd BufReadPre,FileReadPre      *.gpg let ch_save = &ch|set ch=2
        autocmd BufReadPost,FileReadPost    *.gpg '[,']!gpg --decrypt 2> /dev/null
        " Switch to normal mode for editing
        autocmd BufReadPost,FileReadPost    *.gpg set nobin
        autocmd BufReadPost,FileReadPost    *.gpg let &ch = ch_save|unlet ch_save
        autocmd BufReadPost,FileReadPost    *.gpg execute ":doautocmd BufReadPost " . expand("%:r")

        " Convert all text to encrypted text before writing
        autocmd BufWritePre,FileWritePre    *.gpg   '[,']!gpg --default-key=A4122FF3971B6865 --default-recipient-self -ae 2>/dev/null
        " Undo the encryption so we are back in the normal text, directly
        " after the file has been written.
        autocmd BufWritePost,FileWritePost    *.gpg   u
    augroup END

    " Manage ISO files
    augroup iso
        au!

        " First make sure nothing is written to ~/.viminfo while editing an encrypted file.
        autocmd BufReadPre,FileReadPre      *.iso set viminfo=
        " We don't want a swap file, as it writes unencrypted data to disk
        autocmd BufReadPre,FileReadPre      *.iso set noswapfile
        " Switch to binary mode to read the encrypted file
        autocmd BufReadPre,FileReadPre      *.iso set bin
        autocmd BufReadPre,FileReadPre      *.iso let ch_save = &ch|set ch=2
        autocmd BufReadPost,FileReadPost    *.iso '[,']!gpg --decrypt 2> /dev/null
        " Switch to normal mode for editing
        autocmd BufReadPost,FileReadPost    *.iso set nobin
        autocmd BufReadPost,FileReadPost    *.iso let &ch = ch_save|unlet ch_save
        autocmd BufReadPost,FileReadPost    *.iso execute ":doautocmd BufReadPost " . expand("%:r")

        " Convert all text to encrypted text before writing
        autocmd BufWritePre,FileWritePre    *.iso   '[,']!gpg --default-key=A4122FF3971B6865 --default-recipient-self -ae 2>/dev/null
        " Undo the encryption so we are back in the normal text, directly
        " after the file has been written.
        autocmd BufWritePost,FileWritePost    *.iso   u
    augroup END

    " Use persistent history.
    if !isdirectory("/tmp/.vim-undo-dir")
        call mkdir("/tmp/.vim-undo-dir", "", 0700)
    endif
    set undodir=/tmp/.vim-undo-dir
    set undofile

    " My Markdown environment
    function! MarkdownSettings()
        set textwidth=79
        set spell spelllang=en_au
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.mdwn :call MarkdownSettings()
    autocmd BufNewFile,BufFilePre,BufRead *.md :call MarkdownSettings()

    " My ReStructured Text environment
    function! ReStructuredSettings()
        set textwidth=79
        set spell spelllang=en_au
        hi clear SpellBad             " Clear any unwanted default settings
        hi SpellBad cterm=underline   " Set the spell checking highlight style
        hi SpellBad ctermbg=NONE      " Set the spell checking highlight background
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.rst :call ReStructuredSettings()
    autocmd BufNewFile,BufFilePre,BufRead *.txt :call ReStructuredSettings()

    " My LaTeX environment:
    function! LaTeXSettings()
        set textwidth=79
        set spell spelllang=en_au
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.tex :call LaTeXSettings()

    " Settings for my Haskell environment:
    function! HaskellSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.hs :call HaskellSettings()

    " Settings for my Nix environment:
    function! NixSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
        set filetype=nix
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.nix :call NixSettings()

    " Settings for my Cue environment:
    function! CueSettings()
        set tabstop=2
        set shiftwidth=2
        set textwidth=79
        let g:cue_fmt_on_save = 1
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.cue :call CueSettings()

    " Settings for my Rust environment:
    function! RustSettings()
        set tabstop=4
        set shiftwidth=4
        set expandtab
        set textwidth=79
        let g:rustfmt_autosave = 1
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.rs :call RustSettings()

    " Settings for my Crystal environment:
    function! CrystalSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
        set filetype=crystal
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.cr :call CrystalSettings()

    " Settings for my Golang environment:
    function! GoSettings()
        set tabstop=7
        set shiftwidth=7
        set noexpandtab
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.go :call GoSettings()

    " Settings for my Python environment:
    function! PythonSettings()
        set tabstop=4
        set shiftwidth=4
        set expandtab
        set textwidth=79
        set spell!
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.py :call PythonSettings()

    " My Mutt environment
    function! MuttSettings()
        set textwidth=79
        set spell spelllang=en_au
        hi clear SpellBad             " Clear any unwanted default settings
        hi SpellBad cterm=underline   " Set the spell checking highlight style
        hi SpellBad ctermbg=NONE      " Set the spell checking highlight background
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead mutt-* :call MuttSettings()
    autocmd BufNewFile,BufFilePre,BufRead neomutt-* :call MuttSettings()

    " Settings for my C environment:
    function! CSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.c :call CSettings()

    " Settings for my YAML environment:
    function! YAMLSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
        set spell spelllang=en_au
        hi clear SpellBad             " Clear any unwanted default settings
        hi SpellBad cterm=underline   " Set the spell checking highlight style
        hi SpellBad ctermbg=NONE      " Set the spell checking highlight background
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.yaml :call YAMLSettings()
    autocmd BufNewFile,BufFilePre,BufRead *.yml :call YAMLSettings()

    " Settings for my Bash environment:
    function! BashSettings()
        set tabstop=4
        set shiftwidth=4
        set expandtab
        set textwidth=79
        set spell!
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.sh :call BashSettings()

    " My Bzr commit environment
    function! BzrSettings()
        set textwidth=79
        set spell spelllang=en_au
        set tabstop=4
        set shiftwidth=4
        set expandtab
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead bzr_* :call BzrSettings()
  '';
  # store your plugins in Vim packages
  vimrcConfig.packages.myVimPackage = with pkgs.vimPlugins; {
    start = [               # Plugins loaded on launch
      airline               # Lean & mean status/tabline for vim that's light as air
      ctrlp                 # Full path fuzzy file, buffer, mru, tag, ... finder for Vim
      fugitive              # Vim Git wrapper
      gruvbox               # Install the gruvbox theme
      haskell-vim           # Syntax Highlighting and Indentation for Haskell
      neocomplete-vim       # Keyword completion system
      nerdcommenter         # Comment functions so powerful—no comment necessary
      nerdtree              # File system explorer
      nerdtree-git-plugin   # Plugin for nerdtree showing git status
      nord-vim              # Nord theme for ViM
      snipmate              # Concise vim script implementing TextMate's snippets features
      solarized             # Solarized colours for Vim
      supertab              # Allows you to use <Tab> for all your insert completion
      syntastic             # Syntax checking hacks
      tabular               # Script for text filtering and alignment
      vim-addon-nix         # Scripts assisting writing .nix files
      vim-airline-themes    # Collection of themes for airline
      vim-autoformat        # Automatically format code
      vim-colorschemes      # Collection of ViM colour schemes
      vim-cue               # Cue filetype plugin for Vim
      vim-nix               # Support for writing Nix expressions in vim
      vim-polyglot          # A solid language pack for Vim
    ];
    # manually loadable by calling `:packadd $plugin-name`
    # opt = [ phpCompletion elm-vim ];
    # To automatically load a plugin when opening a filetype, add vimrc lines like:
    # autocmd FileType php :packadd phpCompletion
  };
}