let mapleader=" "

" -----------------
" Plugins.
" -----------------

call plug#begin('~/.nvim/plugged')
    Plug 'gruvbox-community/gruvbox'
    Plug 'neovim/nvim-lspconfig'
call plug#end()

" -----------------
" Setters.
" -----------------

set termguicolors
set background=dark
colorscheme gruvbox

set relativenumber
set number
set expandtab
set signcolumn=yes

set mouse=a
set scrolloff=8

set tabstop=4
set softtabstop=4
set shiftwidth=4
set smartindent
set expandtab

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

set hidden
set nobackup
set noswapfile

set hlsearch
set incsearch

if executable('rg')
    set grepprg=rg\ --vimgrep
endif

" -----------------
" LSP & Complete.
" -----------------

set completeopt=menuone,noinsert,noselect

lua << EOF
local on_attach = function(_client, bufnr)
    -- Install `omnifunc` completion handler, get completion with <C-x><C-o>.
    vim.api.nvim_buf_set_option(bufnr, "omnifunc", "v:lua.vim.lsp.omnifunc")

    -- Key mappings.
    local opts = { noremap=true, silent=true }
    vim.api.nvim_buf_set_keymap(bufnr, "n", "K", "<Cmd>lua vim.lsp.buf.hover()<CR>", opts)
    vim.api.nvim_buf_set_keymap(bufnr, "n", "<C-]>", "<Cmd>lua vim.lsp.buf.definition()<CR>", opts)
    vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>r", "<Cmd>lua vim.lsp.buf.references()<CR>", opts)
    vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>i", "<Cmd>lua vim.lsp.buf.implementation()<CR>", opts)
end

-- Setup rust-analyzer.
require'lspconfig'.rust_analyzer.setup {
    on_attach = on_attach,
}

-- Setup clangd.
require'lspconfig'.clangd.setup {
    cmd = { "clangd", "--background-index", "--completion-style=detailed" },
    on_attach = on_attach,
}
EOF

" -----------------
" Mappings.
" -----------------

vnoremap <leader>p "_dP

" -----------------
" Autogroups.
" -----------------

augroup AG_highlight_yank
    autocmd!
    autocmd TextYankPost * silent! lua require'vim.highlight'.on_yank({timeout = 300})
augroup END