let $VIMHOME = expand('~/.vim')
" check if in tty
let g:is_tty = system('case $(tty) in (/dev/tty[0-9]) echo 1;; (*) echo 0;; esac')

" vim-plug init
if empty(glob('~/.vim/autoload/plug.vim'))
  system('curl -fLo ~/.vim/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim')
  autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

call plug#begin('~/.vim/bundle')

""" Install Plugs

" Deoplete.vim
Plug 'Shougo/deoplete.nvim'
Plug 'roxma/nvim-yarp'
Plug 'roxma/vim-hug-neovim-rpc'
let g:deoplete#enable_at_startup = 1

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

" NERDTree
Plug 'scrooloose/nerdtree'
Plug 'Xuyuanp/nerdtree-git-plugin'

" tagbar
Plug 'majutsushi/tagbar'

" vim-fugitive
Plug 'tpope/vim-fugitive'

" ALE
Plug 'w0rp/ale'

" vim-airline
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'

" Colorschemes
Plug 'junegunn/seoul256.vim'
Plug 'scwood/vim-hybrid'
Plug 'kristijanhusak/vim-hybrid-material'
Plug 'srcery-colors/srcery-vim'
Plug 'nightsense/cosmic_latte'
Plug 'rafi/awesome-vim-colorschemes'

" Dockerfile.vim
Plug 'ekalinin/Dockerfile.vim'

" YAML
Plug 'mrk21/yaml-vim'

" Python
Plug 'ambv/black'

" TOML
Plug 'cespare/vim-toml'

" Autoclose
Plug 'jiangmiao/auto-pairs'

" vim-go
Plug 'fatih/vim-go'

" vim-multiple-cursor
Plug 'terryma/vim-multiple-cursors'

" rust.vim
Plug 'rust-lang/rust.vim'

call plug#end()

"""

""" ALE configuration

let g:ale_sign_error = '->'
let g:ale_sign_warning = '~>'

let g:deoplete#sources = {'_': ['ale']}
let g:ale_completion_enabled = 1

let g:ale_linters = {
\   'javascript': ['eslint'],
\   'golang': ['gopls', 'gofmt'],
\   'python': ['flake8', 'python-language-server'],
\   'rust': ['cargo'],
\}

let g:ale_fixers = {
\   'javascript': ['prettier'],
\   'golang': ['gopls', 'gofmt', 'goimports'],
\   'python': ['black', 'python-language-server'],
\   'rust': ['cargo', 'rustfmt'],
\}

let g:ale_echo_msg_error_str = 'Err'
let g:ale_echo_msg_warning_str = 'Warn'
let g:ale_echo_msg_format = '[%linter%] %s [%severity%]'

let g:ale_go_langserver_executable = 'gopls'

""" Themes and colors

set term=linux
set t_Co=256
set background=dark
colorscheme hybrid_reverse 
let g:airline_theme='hybrid'
set number
let g:enable_bold_font = 1
let g:enable_italic_font = 1

" air-line
let g:airline_powerline_fonts = 1

if !exists('g:airline_symbols') && !g:is_tty
    let g:airline_symbols = {}
    endif

    " unicode symbols
    let g:airline_left_sep = ''
    let g:airline_left_alt_sep = ''
    let g:airline_right_sep = ''
    let g:airline_right_alt_sep = ''
    let g:airline_symbols.branch = ''
    let g:airline_symbols.readonly = ''
    let g:airline_symbols.linenr = ''"
    " let g:airline_symbols.branch = '⎇'
    let g:airline_symbols.paste = 'ρ'
    " let g:airline_symbols.paste = 'Þ'
    " let g:airline_symbols.paste = '∥'
    let g:airline_symbols.whitespace = 'Ξ'


""" FZF

let g:fzf_commits_log_options = '--graph --color=always --format="%C(auto)%h%d %s %C(black)%C(bold)%cr"'

let g:fzf_action = {
\	'ctrl-t': 'tabedit',
\	'ctrl-v': 'vsplit',
\	'ctrl-x': 'split' }
let g:fzf_buffers_jump = 1

let g:fzf_commands_expect = 'alt-enter,ctrl-x'

""" NERDTree

" Close NERDTree automatically after opening a file with it.
let g:NERDTreeQuitOnOpen = 1
" Use a single click for opening things in NERDTree
let g:NERDTreeMouseMode = 3
let g:NERDTreeMapActivateNode = '<Space>'
let g:NERDTreeIgnore = [
\   '\.pyc$',
\   '^__pycache__$',
\]

" ripgrep
if executable('rg')
  let $FZF_DEFAULT_COMMAND = 'rg --files --hidden --follow --glob "!.git/*"'
  set grepprg=rg\ --vimgrep
  command! -bang -nargs=* Find call fzf#vim#grep('rg --column --line-number --no-heading --fixed-strings --ignore-case --hidden --follow --glob "!.git/*" --color "always" '.shellescape(<q-args>).'| tr -d "\017"', 1, <bang>0)
endif

" Search in files with ripgrep + preview with bat 
function! Fzf_dev()
  let l:fzf_files_options = '--preview "bat --style=numbers,changes --color always {2..-1} | head -'.&lines.'"'

  function! s:files()
    let l:files = split(system($FZF_DEFAULT_COMMAND), '\n')
    return s:format_list(l:files)
  endfunction

  function! s:format_list(candidates)
    let l:result = []
    for l:candidate in a:candidates
      let l:filename = fnamemodify(l:candidate, ':p:t')
      let l:icon = ">-" 
      call add(l:result, printf('%s %s', l:icon, l:candidate))
    endfor

    return l:result
  endfunction

  function! s:edit_file(item)
    let l:pos = stridx(a:item, ' ')
    let l:file_path = a:item[pos+1:-1]
    execute 'silent e' l:file_path
  endfunction

  call fzf#run({
        \ 'source': <sid>files(),
        \ 'sink':   function('s:edit_file'),
        \ 'options': '-m ' . l:fzf_files_options,
        \ 'down':    '40%' })
endfunction

""" general

set nospell
" restore screen after quitting
au VimLeave * :!clear

packloadall

silent! helptags ALL

" Enable persistent undo
set undodir=$VIMHOME/.undo//
set undofile
set undolevels=1000 "maximum number of changes that can be undone
set undoreload=10000 "maximum number lines to save for undo on a buffer reload

" Automatically re-open files after they have changed without prompting.
" This can be a little more destructive, but a lot less annoying.
set autoread

set autochdir
set autoindent
set showmatch

" Put all special files in the right place
set backupdir=$VIMHOME/.backup//
set directory=$VIMHOME/.swp//

" Draw tabs and trailing spaces.
" set listchars=tab:<->
set listchars=tab:›\ ,trail:•,extends:#,nbsp:. 
set list

" Set the right margin.
set colorcolumn=89
" Automatically split words at the margin.
set wrap

" Default to spaces instead of tabs
set expandtab

" Set tab width to 4.
set tabstop=4
set shiftwidth=4
" Setting this will make backspace delete space indents
set softtabstop=4

" Disable automatic wrapping.
set textwidth=0

" Make :Q and :W work like :q and :w
command! W w
command! Q q

" Make completion smarter.
set ignorecase
set smartcase

" viminfo settings
" '100 : Remember marks for 100 previously edited files.
" <50  : ???
" s10  : ???
" h    : ???
" "100 : Save 100 lines for each register
" :50  : Remember 50 lines of command history
set viminfo='100,<50,s10,h,\"100,:50

" Jump at last opened cursor position position, if valid
if has("autocmd")
  au BufReadPost * if line("'\"") > 0 && line("'\"") <= line("$")
    \| exe "normal! g'\"" | endif
endif

" Warn about not being able to write to .viminfo, which messes up restoring
" the cursor position when editing.
let s:info_filename = expand('~/.viminfo')

if !empty(glob(s:info_filename)) && !filewritable(s:info_filename)
    echoerr 'The .viminfo file cannot be written to!'
endif


""" keybindings

let mapleader = ','
nnoremap <silent> <C-d> :bd<CR>
nnoremap <C-e> :NERDTree<CR>
nnoremap <C-h> <C-w><Left>
nnoremap <C-j> <C-w><Down>
nnoremap <C-k> <C-w><Up>
nnoremap <C-l> <C-w><Right>
nnoremap <C-t> :Tagbar<CR>
nnoremap <leader>b :Gblame<CR>
nnoremap <C-p> :FZF<CR>
nnoremap <C-a> :Buffers<CR>
nnoremap <C-F> :Files<CR>
nnoremap <C-\> :Rg<CR>
nnoremap <leader>\ :call Fzf_dev()<CR>
nnoremap <leader>c :Commits
map <leader><Tab> :bnext<CR>
map <leader><S-Tab> :bprev<CR>