init.vim

init.vim

let mapleader = "\<Space>"

filetype plugin indent on
set encoding=utf-8
set number
set ruler
set autoindent
set smartindent
set signcolumn=yes
set tabstop=2
set shiftwidth=2
set expandtab
set clipboard=unnamed
set termguicolors
set autoread
set noswapfile
set nobackup
set nowritebackup
set showmatch
set list
set listchars=tab:\▸\-,trail:-,extends:»,precedes:«,nbsp:%
set ignorecase
set smartcase
set incsearch
set gdefault
set wrapscan
set hlsearch
set hidden
set showcmd
set relativenumber
set mouse=a " Enable mouse usage (all modes) in terminals
set undodir=~/.vimdid " Permanent undo
set undofile
set updatetime=300
set shortmess+=c
set signcolumn=yes
set pumblend=15
set numberwidth=5
set colorcolumn=120
set cursorline

" =============================================================================
" # Plugins
" =============================================================================

call plug#begin(stdpath('data') . '/plugged')

Plug 'neoclide/coc.nvim', {'branch': 'release'}
Plug 'andymass/vim-matchup'
Plug 'itchyny/lightline.vim'
Plug 'easymotion/vim-easymotion'
Plug 'machakann/vim-highlightedyank'
Plug 'preservim/nerdcommenter'
Plug 'terryma/vim-expand-region'
Plug 'cespare/vim-toml'
Plug 'ryanoasis/vim-devicons'
Plug 'lukas-reineke/indent-blankline.nvim'
Plug 'nvim-treesitter/nvim-treesitter'
Plug 'windwp/nvim-ts-autotag'
" Auto-indentation etc.
Plug 'sheerun/vim-polyglot'
" filer
Plug 'lambdalisue/fern.vim'
" color scheme
Plug 'savq/melange'
Plug 'luisiacc/gruvbox-baby', {'branch': 'main'}
Plug 'EdenEast/nightfox.nvim'
" make background transparent
Plug 'tribela/vim-transparent'

" Fuzzy finder
Plug 'airblade/vim-rooter'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'

call plug#end()


" =============================================================================
" # Looks
" =============================================================================

syntax enable
let colorschemes = ['melange', 'gruvbox-baby', 'nordfox']
" Choose colorscheme randomly on each session
execute 'colorscheme' colorschemes[rand() % len(colorschemes)]

" lightline
function! CocCurrentFunction()
    return get(b:, 'coc_current_function', '')
endfunction

let g:lightline = {
      \ 'colorscheme': 'powerline',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'cocstatus', 'currentfunction', 'readonly', 'relativepath', 'modified' ] ]
      \ },
      \ 'component_function': {
      \   'cocstatus': 'coc#status',
      \   'currentfunction': 'CocCurrentFunction'
      \ },
      \ }


" =============================================================================
" # Key mappings
" =============================================================================

nnoremap j gj
nnoremap k gk
nnoremap <C-k> gk
inoremap <silent> jj <ESC>
inoremap <silent> jk <ESC>
inoremap <silent> <C-h> <ESC>
nmap <Esc><Esc> :nohlsearch<CR><Esc>

" <leader><leader> toggles between buffers
nnoremap <leader><leader> <c-^>

" Quick-save
nmap <leader>w :w<CR>

" Search results centered please
nnoremap <silent> n nzz
nnoremap <silent> N Nzz
nnoremap <silent> * *zz
nnoremap <silent> # #zz
nnoremap <silent> g* g*zz

" Jump to start and end of line using the home row keys
map H ^
map L $

" Easy to split windows and move between them
nnoremap s <Nop>
nnoremap sj <C-w>j
nnoremap sk <C-w>k
nnoremap sl <C-w>l
nnoremap sh <C-w>h
nnoremap sJ <C-w>J
nnoremap sK <C-w>K
nnoremap sL <C-w>L
nnoremap sH <C-w>H
nnoremap ss :<C-u>sp<CR>
nnoremap sv :<C-u>vs<CR>
nnoremap sq :<C-u>q<CR>
nnoremap sQ :<C-u>bd<CR>
nnoremap st :<C-u>tabnew<CR>
nnoremap sn gt
nnoremap sp gT

" Emacs-like key bindings in command line mode
cnoremap <C-a> <Home>
cnoremap <C-b> <Left>
cnoremap <C-d> <Del>
cnoremap <C-e> <End>
cnoremap <C-f> <Right>
cnoremap <C-n> <Down>
cnoremap <C-p> <Up>
cnoremap <M-b> <S-Left>
cnoremap <M-f> <S-Right>

" =============================================================================
" # Coc.nvim settings
" # including fzf-preview
" =============================================================================

let g:coc_global_extensions = [
          \ 'coc-css',
          \ 'coc-git',
          \ 'coc-lists',
          \ 'coc-fzf-preview',
          \ 'coc-highlight',
          \ 'coc-html',
          \ 'coc-json',
          \ 'coc-prettier',
          \ 'coc-python',
          \ 'coc-rust-analyzer',
          \ 'coc-tsserver',
          \ 'coc-deno',
          \ 'coc-clangd',
          \ 'coc-eslint',
          \ 'coc-yaml'
          \ ]

let $BAT_THEME                     = 'gruvbox-dark'
let $FZF_PREVIEW_PREVIEW_BAT_THEME = 'gruvbox-dark'
let g:fzf_preview_grep_cmd = 'rg --line-number --no-heading --smart-case'

nnoremap <silent> gq  :<C-u>CocCommand fzf-preview.CocCurrentDiagnostics<CR>
nnoremap <silent> gr :<C-u>CocCommand fzf-preview.CocReferences<CR>
nnoremap <silent> gi :<C-u>CocCommand fzf-preview.CocImplementations<CR>
" Call coc-definition directly because `fzf-preview.CocDefinition` doesn't work for Go somehow
"nnoremap <silent> gd  :<C-u>CocCommand fzf-preview.CocDefinition<CR>
nmap <silent> gd <Plug>(coc-definition)
nnoremap <silent> gy  :<C-u>CocCommand fzf-preview.CocTypeDefinition<CR>
nnoremap <silent> go  :<C-u>CocCommand fzf-preview.CocOutline --add-fzf-arg=--exact --add-fzf-arg=--no-sort<CR>
nnoremap <silent> gh :<C-u>call <SID>show_documentation()<CR>
nmap <silent> <leader>rn <Plug>(coc-rename)
" Create mappings for function text object, requires document symbols feature of languageserver.
xmap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap if <Plug>(coc-funcobj-i)
omap af <Plug>(coc-funcobj-a)
" Apply codeAction to the current word
nmap <silent> <leader>a  <Plug>(coc-codeaction-selected)iw

function! s:show_documentation() abort
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" use <tab> for trigger completion and navigate to the next complete item
inoremap <silent><expr> <Tab>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ <SID>check_back_space() ? "\<Tab>" :
      \ coc#refresh()

" navigate to the next item
inoremap <silent><expr> <C-j> coc#pum#visible() ? coc#pum#next(1) : "\<Tab>"

" navigate to the previous item
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
inoremap <expr><C-k> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"

" Use <C-.> to trigger completion
inoremap <silent><expr> <C-.> coc#refresh()

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

" Use <CR> to confirm completion when completions are shown,
" in other cases to format code style.
inoremap <silent><expr> <cr> coc#pum#visible() ? coc#pum#confirm() : "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

" Use <Tab> to go next placeholder in snippet
let g:coc_snippet_next = '<Tab>'

" Highlight symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')

" Add `:Fold` command to fold current buffer.
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" Change diagnotic sign character
let g:coc_status_error_sign = has('mac') ? '  ' : 'E: '
let g:coc_status_warning_sign = has('mac') ? '  ' : 'W: '

" =============================================================================
" # Plugin settings
" =============================================================================

" easymotion
nmap <leader>t <Plug>(easymotion-overwin-f2)
let g:EasyMotion_smartcase = 1
let g:EasyMotion_do_mapping = 0 " Disable the default mappings

" fzf.vim
let $FZF_DEFAULT_OPTS="--layout=reverse"
let $FZF_DEFAULT_COMMAND="rg --files --hidden --glob '!.git/**'"
let g:fzf_layout = {'up':'~90%', 'window': { 'width': 0.8, 'height': 0.8, 'yoffset':0.5, 'xoffset': 0.5, 'border': 'sharp' } }
nnoremap <silent> <C-p>  :<C-u>Files<CR>
nnoremap <silent> <leader>s :<C-u>Rg<CR>
nnoremap <silent> <leader>; :<C-u>Buffers<CR>
" :GFiles include untracked files
" See https://github.com/junegunn/fzf.vim/issues/129
command! -bang -nargs=? -complete=dir GFiles call fzf#vim#gitfiles('--exclude-standard --cached --others')

" fern
" <Leader>n to open fern
nnoremap <silent> <Leader>n :<C-u>Fern . -reveal=%<CR>
let g:fern#disable_default_mappings = 1
function! s:init_fern() abort
  " Enable original key mappings
  nmap <buffer> N <Plug>(fern-action-new-file)
  nmap <buffer> K <Plug>(fern-action-new-dir)
  nmap <buffer> c <Plug>(fern-action-copy)
  nmap <buffer> m <Plug>(fern-action-move)
  nmap <buffer> r <Plug>(fern-action-rename)
  nmap <buffer> R <Plug>(fern-action-remove)
  nmap <buffer> <CR> <Plug>(fern-action-open-or-enter)
  nmap <buffer> - <Plug>(fern-action-mark:toggle)
  vmap <buffer> - <Plug>(fern-action-mark:toggle)
endfunction
augroup fern-custom
  autocmd! *
  autocmd FileType fern call s:init_fern()
augroup END
let g:fern#default_hidden=1

" treesitter
lua <<EOF
require('nvim-treesitter.configs').setup {
  ensure_installed = {
    "typescript",
    "tsx",
    "go",
    "rust",
    "cpp",
    "yaml",
    "vue",
    "json",
  },
  highlight = {
    enable = true,
  },
  autotag = {
    enable = true,
  },
}
EOF

" indent-blackline.nvim
lua <<EOF
require("indent_blankline").setup {
  show_current_context = true,
  show_current_context_start = true,
}
EOF

" =============================================================================
" # Autocommands
" =============================================================================

" Jump to last edit position on opening file
if has("autocmd")
  " https://stackoverflow.com/questions/31449496/vim-ignore-specifc-file-in-autocommand
  au BufReadPost * if expand('%:p') !~# '\m/\.git/' && line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
endif

" Auto-loading a file as soon as it changes on disk
set autoread
au CursorHold * checktime