""""""""""""""""""""""""""
"         Plugins
""""""""""""""""""""""""""
" Install vim-plug if not found
if empty(glob('~/.config/vim/autoload/plug.vim'))
  silent !curl -fLo ~/.config/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/vim/plugged')

" UI & Themes
Plug 'sainnhe/everforest' " Everforest theme for vim
Plug 'liuchengxu/vim-which-key' " Show leader mapping cheatsheet

" Git integration
Plug 'airblade/vim-gitgutter' " Git diff

" Autocompletion, linter, syntax
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" Tools
Plug 'ap/vim-css-color' " rgb, hex color preview

call plug#end()

filetype plugin indent on " Allow filetype detection, plugins, indentation

"""""""""""""""""""""""""
"	Configuration
"""""""""""""""""""""""""
" LSP
" Navigate with tab and shift tab in the list, and enter to confirm selection
inoremap <expr> <Tab> coc#pum#visible() ? coc#pum#next(1) : "\<Tab>"
inoremap <expr> <S-Tab> coc#pum#visible() ? coc#pum#prev(1) : "\<S-Tab>"
inoremap <expr> <cr> coc#pum#visible() ? coc#pum#confirm() : "\<CR>"

" 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

" Highlight the symbol and its references when holding the cursor
autocmd CursorHold * silent call CocActionAsync('highlight')

" Netrw (filetree built-in vim)
let g:netrw_keepdir = 0 " Reload buffer usefull when moving or removing file
let g:netrw_winsize = 10 " Size of filetree buffer
let g:netrw_banner = 0 " Removing netrw banner
let g:netrw_localcopydircmd = 'cp -r' " Changing copy command to add recursive copy

" Statusline
let g:currentmode={
	\ 'n'  : 'NORMAL ',
	\ 'v'  : 'VISUAL ',
	\ 'V'  : 'V·Line ',
	\ "\<C-V>" : 'V·Block ',
	\ 'i'  : 'INSERT ',
	\ 'R'  : 'R ',
	\ 'Rv' : 'V·Replace ',
	\ 'c'  : 'Command ',
	\}

set laststatus=2
set statusline=
" VIM Mode
set statusline+=\ %{toupper(g:currentmode[mode()])}%{&spell?'[SPELL]':''}\|
" File (path, modified, readonly ? )
set statusline+=%h\ %F
set statusline+=%{&modified?'\ [+]':''}
set statusline+=%{&readonly?'\ ':''}
" Filetype
set statusline+=%=%y
set statusline+=\ \|\ %{&fileencoding?&fileencoding:&encoding}
set statusline+=\ \|\ [%{&fileformat}\]
set statusline+=\ \|\ %{coc#status()}%{get(b:,'coc_current_function','')}
" Line count and percentage
set statusline+=\ \|\ %l:%c
set statusline+=\ [%p%%]\ 

let g:gruvbox_termcolors=16

" Which Key
call which_key#register('<Space>', "g:which_key_map")
let g:which_key_map =  {}

" Buffer key help
let g:which_key_map.b = { 
    \ 'name' : '+buffer',
    \ 'd' : 'current buffer close',
    \ 'a' : 'close all buffers',
    \ 'n' : 'go to next buffer',
    \ 'p' : 'go to previous buffer', 
    \ }

" Tab key help
let g:which_key_map.t = { 
    \ 'name' : '+tab',
    \ 't<leader>' : 'go to next tab',
    \ 'n' : 'open new tab',
    \ 'o' : 'close other tabs',
    \ 'c' : 'close current tab',
    \ 'm' : 'move tab after another',
    \ 'l' : 'switch between this & last tab',
    \ 'e' : 'open new tab with current buffer',
    \ }

" Spell key help
let g:which_key_map.s = { 
    \ 'name' : '+spell',
    \ 's' : 'toggle spell check',
    \ 'n' : 'next spell word',
    \ 'p' : 'previous spell word',
    \ 'a' : 'add word in dict',
    \ '?' : 'list word alternatives',
    \ }

" Hunk key help
let g:which_key_map.h = { 
    \ 'name' : '+git hunk',
    \ 'l' : 'remove highlight',
    \ 'p' : 'go previous hunk',
    \ 'n' : 'go next hunk',
    \ 't' : 'enable/disable gitgutter',
    \ 's' : 'stage hunk',
    \ 'u' : 'undo hunk',
    \ 'P' : 'preview hunk',
    \ }

" LSP key help
" Activer WhichKey pour ALE
let g:which_key_map.g = { 
    \ 'name' : '+LSP',
    \ 'R' : 'rename object',
	\ 'f' : 'format selected code',
	\ 'a' : 'code action selected',
	\ 'c' : 'code action curseur',
	\ 's' : 'code action buffer',
	\ 'qf' : 'quickfix current line',
	\ 'r' : 'refactor all',
	\ 'cl' : 'codelens action',
    \ }