" Fisa-nvim-config
" http://nvim.fisadev.com
" version: 9.5 beta

" TODO current problems:
" * end key not working undef tmux+fish

" ============================================================================
" Vim-plug initialization
" Avoid modify this section, unless you are very sure of what you are doing
let vim_plug_just_installed = 0
let vim_plug_path = expand('~/.config/nvim/autoload/plug.vim')
if !filereadable(vim_plug_path)
    echo "Installing Vim-plug..."
    echo ""
    silent !mkdir -p ~/.config/nvim/autoload
    silent !curl -fLo ~/.config/nvim/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
    let vim_plug_just_installed = 1
endif

" manually load vim-plug the first time
if vim_plug_just_installed
    :execute 'source '.fnameescape(vim_plug_path)
endif

" Obscure hacks done, you can now modify the rest of the .vimrc as you wish :)

" ============================================================================
" Active plugins
" You can disable or add new ones here:

" this needs to be here, so vim-plug knows we are declaring the plugins we
" want to use
call plug#begin('~/.config/nvim/plugged')

" Now the actual plugins:

Plug 'ntpeters/vim-better-whitespace'

" Nice support for latex files
Plug 'lervag/vimtex'

" Override configs by directory
Plug 'arielrossanigo/dir-configs-override.vim'

" Code commenter
Plug 'scrooloose/nerdcommenter'

" Better file browser
Plug 'scrooloose/nerdtree'

" Class/module browser
Plug 'majutsushi/tagbar'
" TODO known problems:
" * current block not refreshing

" Search results counter
Plug 'vim-scripts/IndexedSearch'

" Terminal Vim with 256 colors colorscheme
Plug 'patstockwell/vim-monokai-tasty'

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

" Code and files fuzzy finder
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'

Plug 'neomake/neomake'

" Pre-built configurations for the neovim LSP client
Plug 'neovim/nvim-lspconfig'

" List all symbols in the file
Plug 'simrat39/symbols-outline.nvim'

" Statusline information about the LS state
Plug 'nvim-lua/lsp-status.nvim'

" Autocomplete, may switch to COQ in the future
Plug 'hrsh7th/cmp-nvim-lsp', {'branch' : 'main'}
Plug 'hrsh7th/cmp-path', {'branch' : 'main'}
Plug 'hrsh7th/nvim-cmp', {'branch' : 'main'}
Plug 'hrsh7th/cmp-vsnip', {'branch' : 'main'}
Plug 'hrsh7th/vim-vsnip'

" Surround
Plug 'tpope/vim-surround'

" Indent text object
Plug 'michaeljsmith/vim-indent-object'

" Indentation based movements
Plug 'jeetsukumaran/vim-indentwise'

" Better language packs
Plug 'sheerun/vim-polyglot'
let g:polyglot_disabled = ['latex']

" Ack code search (requires ack installed in the system)
Plug 'mileszs/ack.vim'
" TODO is there a way to prevent the progress which hides the editor?

" Paint css colors with the real color
Plug 'lilydjwg/colorizer'
" TODO is there a better option for neovim?

" Window chooser
Plug 't9md/vim-choosewin'

" Highlight matching html tags
Plug 'valloric/MatchTagAlways'

" Git integration
Plug 'tpope/vim-fugitive'

" Git/mercurial/others diff icons on the side of the file lines
Plug 'mhinz/vim-signify'

" Relative numbering of lines (0 is the current line)
" (disabled by default because is very intrusive and can't be easily toggled
" on/off. When the plugin is present, will always activate the relative
" numbering every time you go to normal mode. Author refuses to add a setting
" to avoid that)
Plug 'myusuf3/numbers.vim'


" Official rust plugin
Plug 'rust-lang/rust.vim'
Plug 'simrat39/rust-tools.nvim'


" Tell vim-plug we finished declaring plugins, so it can load them
call plug#end()

lua << EOF
-- Setup LSP status to display the number of diagnostics in the statusbar
local lsp_status = require('lsp-status')
local kind_labels_mt = {__index = function(_, k) return k end}
local kind_labels = {}
setmetatable(kind_labels, kind_labels_mt)

lsp_status.register_progress()
lsp_status.config({
  current_function = false,
  kind_labels = kind_labels,
  indicator_hint = '?',
  -- the default is a wide codepoint which breaks absolute and relative
  -- line counts if placed before airline's Z section
  status_symbol = "",
})

-- Setup nvim-cmp.
local cmp = require'cmp'

cmp.setup({
  completion = {
    autocomplete = false,
  },
  snippet = {
    -- REQUIRED - you must specify a snippet engine
    expand = function(args)
      vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
    end,
  },
  mapping = {
    ['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
    ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
    ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
    ['<C-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
    ['<C-e>'] = cmp.mapping({
      i = cmp.mapping.abort(),
      c = cmp.mapping.close(),
    }),
    ['<CR>'] = cmp.mapping.confirm({ select = true }),
  },
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
  }, {
    { name = 'path' },
  })
})

-- Setup the actual language servers
local nvim_lsp = require('lspconfig')

local opts = { noremap=true, silent=true }
vim.api.nvim_set_keymap('n', '<space>e', '<cmd>lua vim.diagnostic.open_float()<CR>', opts)
vim.api.nvim_set_keymap('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
vim.api.nvim_set_keymap('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
vim.api.nvim_set_keymap('n', '<space>q', '<cmd>lua vim.diagnostic.setloclist()<CR>', opts)

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
local on_attach = function(client, bufnr)
  local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
  local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end

  -- Enable completion triggered by <c-x><c-o>
  buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
  buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
  buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
  buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
  buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
  buf_set_keymap('n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
  buf_set_keymap('n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
  buf_set_keymap('n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
  buf_set_keymap('n', 'gy', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
  buf_set_keymap('n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
  buf_set_keymap('n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
  buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
  buf_set_keymap('n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)

  lsp_status.on_attach(client)
end

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
local servers = { 'clangd', 'hls', 'rust_analyzer', 'texlab', 'pylsp' }
for _, lsp in ipairs(servers) do
  local config = {
    on_attach = on_attach,
    flags = {
      debounce_text_changes = 150,
    },
    capabilities = require('cmp_nvim_lsp').update_capabilities(lsp_status.capabilities)
  }
  if lsp == 'pylsp' then
    config['settings'] = {pylsp = {plugins = {pylint = {enabled = true}}}}
  end
  if lsp == 'rust_analyzer' then
    require('rust-tools').setup({server = config})
  else
    nvim_lsp[lsp].setup(config)
  end
end

EOF

nmap <silent><space>s :SymbolsOutline<CR>
nmap <F4> :SymbolsOutline<CR>

function! LspStatus() abort
  return trim(luaeval("require('lsp-status').status()"))
endfunction
call airline#parts#define_function('lsp_status', 'LspStatus')
call airline#parts#define_condition('lsp_status', 'luaeval("#vim.lsp.buf_get_clients() > 0")')
let g:airline#extensions#nvimlsp#enabled = 0
let g:airline_section_warning = airline#section#create_right(['lsp_status'])

" ============================================================================
" Vim settings and mappings
" You can edit them as you wish

" tabs and spaces handling
set expandtab
set tabstop=4
set softtabstop=4
set shiftwidth=4

" show line numbers
set nu

" use 256 colors when possible
colorscheme vim-monokai-tasty

" needed so deoplete can auto select the first suggestion
set completeopt+=noinsert
" comment this line to enable autocompletion preview window
" (displays documentation related to the selected completion option)
set completeopt-=preview

" autocompletion of files and commands behaves like shell
" (complete only the common part, list the options that match)
set wildmode=list:longest

" save as sudo
ca w!! w !sudo tee "%"

" tab navigation mappings
map tt :tabnew 
map <M-Right> :tabn<CR>
imap <M-Right> <ESC>:tabn<CR>
map <M-Left> :tabp<CR>
imap <M-Left> <ESC>:tabp<CR>

" when scrolling, keep cursor 3 lines away from screen border
set scrolloff=3

" clear search results
nnoremap <silent> // :noh<CR>

" clear empty spaces at the end of lines on save of python files
autocmd BufWritePre *.py :%s/\s\+$//e

" ============================================================================
" Plugins settings and mappings
" Edit them as you wish.

" NERDTree -----------------------------

" toggle nerdtree display
map <F3> :NERDTreeToggle<CR>
" open nerdtree with the current file selected
nmap ,t :NERDTreeFind<CR>
" don;t show these file types
let NERDTreeIgnore = ['\.pyc$', '\.pyo$']


" Fzf ------------------------------

" file finder mapping
nmap ,e :Files<CR>
" buffer search
nmap ,b :Buffers<CR>
" Ag search
nmap ,a :Ag<CR>
" tags (symbols) in current file finder mapping
nmap ,g :BTag<CR>
" tags (symbols) in all files finder mapping
nmap ,G :Tag<CR>
" general code finder in current file mapping
nmap ,f :BLines<CR>
" general code finder in all files mapping
nmap ,F :Lines<CR>
" commands finder mapping
nmap ,c :Commands<CR>
" to be able to call CtrlP with default search text
"function! CtrlPWithSearchText(search_text, ctrlp_command_end)
    "execute ':CtrlP' . a:ctrlp_command_end
    "call feedkeys(a:search_text)
"endfunction
" same as previous mappings, but calling with current word as default text
"nmap ,wg :call CtrlPWithSearchText(expand('<cword>'), 'BufTag')<CR>
"nmap ,wG :call CtrlPWithSearchText(expand('<cword>'), 'BufTagAll')<CR>
"nmap ,wf :call CtrlPWithSearchText(expand('<cword>'), 'Line')<CR>
"nmap ,we :call CtrlPWithSearchText(expand('<cword>'), '')<CR>
"nmap ,pe :call CtrlPWithSearchText(expand('<cfile>'), '')<CR>
"nmap ,wm :call CtrlPWithSearchText(expand('<cword>'), 'MRUFiles')<CR>
"nmap ,wc :call CtrlPWithSearchText(expand('<cword>'), 'CmdPalette')<CR>


" Ack.vim ------------------------------

" mappings
nmap ,r :Ack
nmap ,wr :Ack <cword><CR>

" Window Chooser ------------------------------

" mapping
nmap  -  <Plug>(choosewin)
" show big letters
let g:choosewin_overlay_enable = 1

" Signify ------------------------------

" this first setting decides in which order try to guess your current vcs
" UPDATE it to reflect your preferences, it will speed up opening files
let g:signify_vcs_list = [ 'git', 'hg' ]
" mappings to jump to changed blocks
nmap <leader>sn <plug>(signify-next-hunk)
nmap <leader>sp <plug>(signify-prev-hunk)
" nicer colors
highlight DiffAdd           cterm=bold ctermbg=none ctermfg=119
highlight DiffDelete        cterm=bold ctermbg=none ctermfg=167
highlight DiffChange        cterm=bold ctermbg=none ctermfg=227
highlight SignifySignAdd    cterm=bold ctermbg=237  ctermfg=119
highlight SignifySignDelete cterm=bold ctermbg=237  ctermfg=167
highlight SignifySignChange cterm=bold ctermbg=237  ctermfg=227

" Autoclose ------------------------------

" Fix to let ESC work as espected with Autoclose plugin
" (without this, when showing an autocompletion window, ESC won't leave insert
"  mode)
let g:AutoClosePumvisible = {"ENTER": "\<C-Y>", "ESC": "\<ESC>"}

" Airline ------------------------------

let g:airline_powerline_fonts = 0
let g:airline_theme = 'bubblegum'
let g:airline#extensions#whitespace#enabled = 0

" to use fancy symbols for airline, uncomment the following lines and use a
" patched font (more info on docs/fancy_symbols.rst)
"if !exists('g:airline_symbols')
   "let g:airline_symbols = {}
"endif
"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:vimtex_view_method = 'zathura'

set clipboard=unnamedplus inccommand=nosplit
set mouse=a
let g:tex_flavor = "latex"
au BufNewFile,BufRead *.tex,*.latex,*.sty,*.dtx,*.ltx set sw=2 sts=2

function PrintFile(fname)
   call system("gtklp " . a:fname)
   call delete(a:fname)
   return v:shell_error
endfunction
set printexpr=PrintFile(v:fname_in)