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path: root/.config/nvim/init.vim
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" "
" Plugins
" "

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

Plug 'doums/darcula'

Plug 'preservim/nerdtree'
Plug 'ryanoasis/vim-devicons'
Plug 'Xuyuanp/nerdtree-git-plugin'

Plug 'nvim-lua/plenary.nvim'
Plug 'nvim-telescope/telescope.nvim'

Plug 'airblade/vim-gitgutter'

Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}

Plug 'lukas-reineke/indent-blankline.nvim'

Plug 'iamcco/markdown-preview.nvim', {'do': { -> mkdp#util#install() }, 'for': ['markdown', 'vim-plug']}
" if install fails do `:call mkdp#util#install() manually`

Plug 'neovim/nvim-lspconfig'
Plug 'williamboman/nvim-lsp-installer'
Plug 'hrsh7th/nvim-cmp'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'saadparwaiz1/cmp_luasnip'
Plug 'L3MON4D3/LuaSnip'

Plug 'https://gitlab.com/dweipert.de/rclone.nvim'

call plug#end()


" "
" Config
" "

nnoremap <SPACE> <Nop>
let mapleader=" "

set shiftwidth=2
set tabstop=2
set expandtab

set list
set listchars=tab:\ \ ,trail:-

set mouse=a
set splitright

set updatetime=250

" ruler
set relativenumber number
augroup numbertoggle
  autocmd!
  autocmd BufEnter,WinEnter * if &nu && mode() != 'i' | set relativenumber | endif
  autocmd BufLeave,WinLeave * if &nu | set norelativenumber | endif
augroup END

colorscheme darcula
set termguicolors
hi Normal guibg=NONE ctermbg=NONE


" Nerdtree

let g:NERDTreeShowHidden=1
let g:NERDTreeGitStatusShowIgnored=1

if !&diff
  autocmd StdinReadPre * let s:std_in=1
  autocmd VimEnter * NERDTree | if argc() > 0 || exists('s:std_in') | wincmd p | endif
  autocmd VimEnter * if argc() > 0 | silent NERDTreeFind | wincmd p | endif
endif

autocmd BufWinEnter * if getcmdwintype() == '' | silent NERDTreeMirror | endif
autocmd BufEnter * if winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif

map <C-b> <cmd>NERDTreeToggle<CR>


" Telescope
 
nnoremap <leader>ff <cmd>Telescope find_files<CR>
nnoremap <leader>fg <cmd>Telescope live_grep<CR>
nnoremap <leader><leader> <cmd>Telescope buffers<CR>


" GitGutter

nnoremap <leader>gp <cmd>GitGutterPreviewHunk<CR>
nnoremap <leader>gu <cmd>GitGutterUndoHunk<CR>


" Treesitter

lua <<EOF
require('nvim-treesitter.configs').setup {
  ensure_installed = 'maintained', -- one of "all", "maintained" (parsers with maintainers), or a list of languages
  sync_install = false, -- install languages synchronously (only applied to `ensure_installed`)
  indent = {
    enable = true,
  },
  highlight = {
    enable = true,
    additional_vim_regex_highlighting = false,
  },
}
EOF


" Indent Blankline
lua <<EOF
vim.cmd [[highlight IndentBlanklineChar guifg=#303030 gui=nocombine]]
vim.cmd [[highlight IndentBlanklineContextChar guifg=#404040 gui=nocombine]]

require('indent_blankline').setup {
	use_treesitter = true,
	show_first_indent_level = false,
	show_trailing_blankline_indent = false,
	show_current_context = true,
}
EOF


" Markdown Preview

let g:mkdp_preview_options = {
  \ 'disable_sync_scroll': 1
\ }


" LSP

lua <<EOF
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.
  local opts = { noremap=true, silent=true }

  -- 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', '<space>D', '<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>e', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
  buf_set_keymap('n', '[d', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
  buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
  buf_set_keymap('n', '<space>q', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
  buf_set_keymap('n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)

vim.o.completeopt = 'menuone,noselect'

local lsp_installer = require('nvim-lsp-installer')
lsp_installer.on_server_ready(function(server)
  server:setup({
    on_attach = on_attach,
    capabilities = capabilities,
  })
end)

local cmp = require('cmp')
local luasnip = require('luasnip')
cmp.setup {
  snippet = {
    expand = function(args)
      luasnip.lsp_expand(args.body)
    end,
  },
  mapping = {
    ['<C-p>'] = cmp.mapping.select_prev_item(),
    ['<C-n>'] = cmp.mapping.select_next_item(),
    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
    ['<C-f>'] = cmp.mapping.scroll_docs(4),
    ['<C-Space>'] = cmp.mapping.complete(),
    ['<C-e>'] = cmp.mapping.close(),
    ['<CR>'] = cmp.mapping.confirm {
      behavior = cmp.ConfirmBehavior.Replace,
      select = true,
    },
    ['<Tab>'] = function(fallback)
      if cmp.visible() then
        cmp.select_next_item()
      elseif luasnip.expand_or_jumpable() then
        luasnip.expand_or_jump()
      else
        fallback()
      end
    end,
    ['<S-Tab>'] = function(fallback)
      if cmp.visible() then
        cmp.select_prev_item()
      elseif luasnip.jumpable(-1) then
        luasnip.jump(-1)
      else
        fallback()
      end
    end,
  },
  sources = {
    { name = 'nvim_lsp' },
    { name = 'luasnip' },
  },
}
EOF


" "
" Keys
" "

" buffer pane navigation
nnoremap <A-Left> <C-w><Left>
nnoremap <A-Up> <C-w><Up>
nnoremap <A-Right> <C-w><Right>
nnoremap <A-Down> <C-w><Down>

nnoremap <C-Left> <cmd>tabprevious<CR>
nnoremap <C-Right> <cmd>tabnext<CR>

" esc / quit
map <ESC><C-c> <CR>
nnoremap <C-q> <cmd>q<CR>

" save
nnoremap <silent> <C-s> <cmd>w<CR>
inoremap <silent> <C-s> <ESC><cmd>w<CR>