init.vim

filetype plugin on

" Install vim-plug if not found
if empty(glob('~/.vim/autoload/plug.vim'))
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
endif

" Run PlugInstall if there are missing plugins
autocmd VimEnter * if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
  \| PlugInstall --sync | source $MYVIMRC
\| endif

call plug#begin('~/.config/nvim/plugged')

Plug 'airblade/vim-gitgutter'
Plug 'ctrlpvim/ctrlp.vim'
Plug 'mileszs/ack.vim'
Plug 'raimondi/delimitmate'
Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
Plug 'tomasr/molokai'
Plug 'tpope/vim-endwise'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'neovim/nvim-lspconfig'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/cmp-buffer'
Plug 'hrsh7th/cmp-path'
Plug 'hrsh7th/cmp-cmdline'
Plug 'hrsh7th/nvim-cmp'
Plug 'neoclide/coc.nvim', {'branch': 'release'}

call plug#end()

colorscheme molokai " Use the molokai colorscheme
syntax on " Enable syntax highlighting

" Behaviour
set autoread " Automatically read new file changes
set fileformat=unix " Use the unix EOL
set hidden " Enable changing files without needing to save the current one
set nobackup " Turn backup off
set nocompatible " Set not compatible with Vi
set noswapfile " Turn buffer swapfile off
set nowritebackup " Turn save backups off
set ttyfast " Enable redrawing of more characters

" Search
set hlsearch " Highlight all search matches
set ignorecase " Make search case-insensitive
set incsearch " Jump to partial search match
set smartcase " Make search case-sensitive when using uppercase characters
set wildignore+=*/\.git/*,*/cache/*,*/log/*,*/tmp/*,*/uploads/*,*/vendor/*,.DS_Store,*.jpeg,*.jpg,*.orig,*.otf,*.png,*.so,*.swp,*.woff,*.zip " Set patterns to ignore in search

" Styling
set cursorline " Highlight current line
set mousehide " Hide mouse pointer when typing
set noshowcmd " Hide partial command in the last line
set noshowmode " Do not put a message in the last line with the current mode
set nostartofline " Avoid jumping to start of line when scrolling
set number " Enable line numbers
set scrolloff=10 " Start scrolling 5 lines before the horizontal window border
set shortmess=filmnrxoOI " Shorten some messages
set visualbell " Use visual bell instead of system beep
set wildmenu " Show possible matches when invoking completion
set wildmode=list:longest,full " Select match based on longest common string
set whichwrap=<,>,[,] " Wrap when moving left/right at begining/end of line

" Text formatting
set autoindent " Enable automatic indentation
set backspace=indent,eol,start " Make backspace work properly
set expandtab " Use spaces instead of tabs
set shiftwidth=2 " Auto-indent using 2 spaces
set smartindent " Enable smart indentation
set tabstop=2 " Convert 1 tab to 2 spaces
set virtualedit=block " Allow placing cursor on empty section in visual block mode

" Spellcheck and wrap commit messages
autocmd Filetype gitcommit setlocal spell textwidth=72

" Handle long lines (80 characters)
highlight ColorColumn ctermbg=235 guibg=#2c2d27
let &colorcolumn=join(range(81,999),",")

"" Customisations and aliases
let mapleader=" " " Set leader key to space

" Avoid having to hold shift for : commands in EN layouts (e.g. allows ;w for save)
nnoremap ; :

" Use jj to get out of insert mode without having to hit Esc or Ctrl+c
inoremap jj <ESC>

" Split vertically
map <leader>\ <C-W>v

" Split horizontally
map <leader>- <C-W>s

" Move between split windows
map <leader>j <C-W>j
map <leader>k <C-W>k
map <leader>h <C-W>h
map <leader>l <C-W>l

" Navigate buffers using Ctrl+l and Ctrl+h
nnoremap <C-l> :bnext<CR>
nnoremap <C-h> :bprevious<CR>

" Call ack
map <leader>a :Ack<space>

"" Plugins

" Initialize deoplete and set tab completion
let g:deoplete#enable_at_startup=1

" Set up vim-airline
set laststatus=2
let g:airline_powerline_fonts=1
let g:airline_detect_paste=1
let g:airline#extensions#tabline#enabled=1
let g:airline_theme='tomorrow'

" Better grep (needs ripgrep installed)
let g:ackprg='rg -n'

" Faster CtrlP
let g:ctrlp_user_command='rg %s --files'
let g:ctrlp_use_caching=0

" coc-tsserver
nmap <leader>ca <Plug>(coc-codeaction)
nmap <leader>qf <Plug>(coc-fix-current)
autocmd BufWritePre * :CocCommand prettier.formatFile

" GoTo code navigation
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window
nnoremap <silent> K :call ShowDocumentation()<CR>

function! ShowDocumentation()
  if CocAction('hasProvider', 'hover')
    call CocActionAsync('doHover')
  else
    call feedkeys('K', 'in')
  endif
endfunction

" Applying code actions to the selected code block
" Example: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap keys for applying code actions at the cursor position
nmap <leader>ac  <Plug>(coc-codeaction-cursor)
" Remap keys for apply code actions affect whole buffer
nmap <leader>as  <Plug>(coc-codeaction-source)
" Apply the most preferred quickfix action to fix diagnostic on the current line
nmap <leader>qf  <Plug>(coc-fix-current)

" Remap keys for applying refactor code actions
nmap <silent> <leader>re <Plug>(coc-codeaction-refactor)
xmap <silent> <leader>r  <Plug>(coc-codeaction-refactor-selected)
nmap <silent> <leader>r  <Plug>(coc-codeaction-refactor-selected)

" Run the Code Lens action on the current line
nmap <leader>cl  <Plug>(coc-codelens-action)