set hidden
set shortmess+=O

" Install vim-plug
let data_dir = has('nvim') ? stdpath('data') . '/site' : '~/.vim'
if empty(glob(data_dir . '/autoload/plug.vim'))
    silent execute '!curl -fLo '.data_dir.'/autoload/plug.vim --create-dirs  https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
    autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
endif

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

" Nice defaults
Plug 'tpope/vim-sensible'

" Lua functions
Plug 'nvim-lua/plenary.nvim'

" UI
Plug 'kyazdani42/nvim-web-devicons' " for file icons
Plug 'akinsho/bufferline.nvim', { 'tag': 'v2.*' }
Plug 'majutsushi/tagbar', { 'on': 'TagbarToggle' }
Plug 'nvim-telescope/telescope.nvim'
Plug 'nvim-telescope/telescope-file-browser.nvim'
Plug 'nvim-telescope/telescope-fzf-native.nvim', { 'do': 'make' }
Plug 'lukas-reineke/indent-blankline.nvim'
Plug 'psliwka/vim-smoothie'
Plug 'kaicataldo/material.vim', { 'branch': 'main' }
Plug 'projekt0n/github-nvim-theme'
Plug 'nvim-lualine/lualine.nvim'

" Autocomplete
Plug 'neoclide/coc.nvim', { 'branch': 'release' }
Plug 'raimondi/delimitmate'

" Git
Plug 'tpope/vim-fugitive'

" Lang
Plug 'rust-lang/rust.vim', { 'for': 'rust' }
Plug 'cespare/vim-toml', { 'for': 'toml' }
Plug 'lervag/vimtex', { 'for': 'LaTeX' }
Plug 'gregsexton/MatchTag', { 'for': 'html' }
Plug 'sheerun/vim-polyglot'

" Utility
Plug 'tpope/vim-surround'
Plug 'editorconfig/editorconfig-vim'
Plug 'max397574/better-escape.nvim'
Plug 'numToStr/Comment.nvim'
Plug 'phaazon/hop.nvim'

" Snipits
Plug 'honza/vim-snippets'

call plug#end()

" Vim settings
set encoding=utf-8
set nowrap
set showmatch
set hlsearch
set number
set mouse=a
set wildchar=<Tab> wildmenu wildmode=full
syntax enable
filetype plugin indent on
set tabstop=4
set shiftwidth=4
set expandtab
set conceallevel=2
set emoji
set history=1000
set backspace=indent,eol,start
set undofile
set undodir=/tmp
set foldlevel=0
set inccommand=nosplit

" Performance
set nocursorline
set nocursorcolumn
set scrolljump=5
set lazyredraw
set redrawtime=10000
set synmaxcol=180
set re=0

" Coc
set cmdheight=1
set updatetime=300
set signcolumn=yes
set shortmess+=c
set nobackup
set nowritebackup


""" Mappings
" Remap leader
let mapleader = ","

" emulate windows copy, cut behavior
vnoremap <LeftRelease> "+y<LeftRelease>
vnoremap <C-c> "+y<CR>
vnoremap <C-x> "+d<CR>

" disable hl with 2 esc
noremap <silent><esc> <esc>:noh<CR><esc>

" Plugins
nmap <F5> :TagbarToggle<CR>

" Buffer navigation
nnoremap <silent> <tab> :BufferLineCycleNext<cr>
nnoremap <silent> <S-tab> :BufferLineCyclePrev<cr>
nnoremap <silent> kb <cmd>bdelete<cr>

" new line in normal mode and back
map <Enter> o<ESC>
map <S-Enter> O<ESC>

" Hop mappings
nnoremap f <cmd>HopChar1<cr>
nnoremap s <cmd>HopChar2<cr>
nnoremap w <cmd>HopWord<cr>
vnoremap f <cmd>HopChar1<cr>
vnoremap s <cmd>HopChar2<cr>
vnoremap w <cmd>HopWord<cr>

" Telescope mappings
nnoremap <leader>ff <cmd>Telescope find_files<cr>
nnoremap <leader>fg <cmd>Telescope live_grep<cr>
nnoremap <leader>fh <cmd>Telescope help_tags<cr>
nnoremap <f4> <cmd>Telescope file_browser<cr>

" Edit shortcuts
nnoremap <silent> <leader>ev :execute 'edit' resolve($MYVIMRC)<cr>
nnoremap <silent> <leader>xv :source $MYVIMRC<cr>

""" End mappings

" Tagbar configuration
let g:tagbar_autofocus = 1

" GUI
let g:material_theme_style = 'darker'
let $NVIM_TUI_ENABLE_TRUE_COLOR = 1
set termguicolors
silent! colorscheme github_dimmed
set synmaxcol=500

" Lua settings
lua << EOF
require("bufferline").setup {
    options = {
        diagnostics = "coc",
        show_close_icon = false,
        show_buffer_close_icons = false,
        numbers = "buffer_id"
    }
}

require("indent_blankline").setup {}

require("Comment").setup()

require("hop").setup()

require("better_escape").setup {
    mapping = {",,"},
    timeout = 150,
    clear_empty_lines = false,
    keys = "<Esc>",
}

require("telescope").setup { 
    defaults = { file_ignore_patterns = {"node_modules"} },
    extensions = {
        fzf = {
            fuzzy = true,
            override_generic_sorter = true,
            override_file_sorter = true,
            case_mode = "smart_case",
        }
    }
}

require("telescope").load_extension("file_browser")
require("telescope").load_extension("fzf")

require("lualine").setup {
  options = {
    icons_enabled = true,
    theme = "github_dimmed",
    component_separators = { left = '', right = ''},
    section_separators = { left = '', right = ''},
    disabled_filetypes = {},
    always_divide_middle = true,
    globalstatus = false,
  },
  sections = {
    lualine_a = {'mode'},
    lualine_b = {'branch', 'diff', 'diagnostics'},
    lualine_c = {},
    lualine_x = {'encoding', 'fileformat', 'filetype'},
    lualine_y = {'progress'},
    lualine_z = {'location'}
  },
  inactive_sections = {
    lualine_a = {},
    lualine_b = {},
    lualine_c = {'filename'},
    lualine_x = {'location'},
    lualine_y = {},
    lualine_z = {}
  },
  tabline = {},
  extensions = {}
}
EOF

" LaTeX settings
let g:tex_flavor = 'latex'
let g:vimtex_quickfix_mode = 0
set conceallevel=1
let g:tex_conceal = 'abdmg'

" Return to last edit position when opening files
autocmd BufReadPost *
     \ if line("'\"") > 0 && line("'\"") <= line("$") |
     \   exe "normal! g`\"" |
     \ endif


" Use <c-space> to trigger completion.
if has('nvim')
  inoremap <silent><expr> <c-space> coc#refresh()
else
  inoremap <silent><expr> <c-@> coc#refresh()
endif

" Make <CR> auto-select the first completion item and notify coc.nvim to
" format on enter, <cr> could be remapped by other vim plugin
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
" Use tab for trigger completion with characters ahead and navigate.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? coc#_select_confirm() :
      \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()

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

let g:coc_snippet_next = '<tab>'
let g:coc_snippet_prev = '<S-Tab>'

" Use `[g` and `]g` to navigate diagnostics
" Use `:CocDiagnostics` to get all diagnostics of current buffer in location list.
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" 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)

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

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

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

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

" Symbol renaming.
nmap <leader>rn <Plug>(coc-rename)

" Formatting selected code.
xmap <F1> :Format<cr>
nmap <F1> :Format<cr>

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

" Remap keys for applying codeAction to the current buffer.
nmap <leader>ac  <Plug>(coc-codeaction)
" Apply AutoFix to problem on the current line.
nmap <leader>qf  <Plug>(coc-fix-current)

" Map function and class text objects
" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
xmap if <Plug>(coc-funcobj-i)
omap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap af <Plug>(coc-funcobj-a)
xmap ic <Plug>(coc-classobj-i)
omap ic <Plug>(coc-classobj-i)
xmap ac <Plug>(coc-classobj-a)
omap ac <Plug>(coc-classobj-a)

" Remap <C-f> and <C-b> for scroll float windows/popups.
if has('nvim-0.4.0') || has('patch-8.2.0750')
    nnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
    nnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
    inoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
    inoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
    vnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
    vnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
endif

" Use CTRL-S for selections ranges.
" Requires 'textDocument/selectionRange' support of language server.
nmap <silent> <C-s> <Plug>(coc-range-select)
xmap <silent> <C-s> <Plug>(coc-range-select)

" Add `:Format` command to format current buffer.
command! -nargs=0 Format :call CocAction('format')

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

" Add `:OR` command for organize imports of the current buffer.
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Coc languages
let g:coc_global_extensions = [
      \ 'coc-vimtex',
      \ 'coc-omni',
      \ 'coc-clangd',
      \ 'coc-snippets',
      \ 'coc-pyright',
      \ 'coc-json',
      \ 'coc-css',
      \ 'coc-yaml',
      \ 'coc-rust-analyzer',
      \ 'coc-vimlsp',
      \ 'coc-tsserver',
      \ 'coc-syntax',
      \ 'coc-prettier',
      \ 'coc-git',
      \ 'coc-sh',
      \ 'coc-highlight',
      \ 'coc-html',
      \ 'coc-eslint',
      \ 'coc-lists'
      \]