call plug#begin('~/.config/nvim/plugged')

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

" Gruvbox theme
Plug 'morhetz/gruvbox'
Plug 'sainnhe/gruvbox-material'

" Tree for searching files
Plug 'scrooloose/nerdtree'
Plug 'PhilRunninger/nerdtree-visual-selection'

" Quick comment/uncomment lines
Plug 'scrooloose/nerdcommenter'

" Auto complete quotes
Plug 'raimondi/delimitmate'

" Changing quotes/tags/parenthesis
" See :help surround
" Plug 'jiangmiao/auto-pairs'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-repeat'

" Git integration
Plug 'tpope/vim-fugitive'

" File symbols browser
Plug 'preservim/tagbar'

" Fuzzy finder
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'junegunn/fzf.vim'

" Indentation style guesser
Plug 'tpope/vim-sleuth'

" Session manager
Plug 'tpope/vim-obsession'

" Cheat sheet
Plug 'folke/which-key.nvim'

" LSP
Plug 'neovim/nvim-lspconfig'

" nvim-cmp
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/cmp-buffer'
Plug 'hrsh7th/cmp-path'
Plug 'hrsh7th/cmp-cmdline'
Plug 'hrsh7th/nvim-cmp'

" Snippets
Plug 'L3MON4D3/LuaSnip', {'tag': 'v2.*', 'do': 'make install_jsregexp'}
Plug 'rafamadriz/friendly-snippets'
Plug 'saadparwaiz1/cmp_luasnip'

" Eslint
Plug 'nvim-lua/plenary.nvim'
Plug 'nvimtools/none-ls.nvim'

call plug#end()

augroup nerdtree
	" Exit Vim if NERDTree is the only window remaining in the only tab.
	autocmd BufEnter * if tabpagenr('$') == 1 && winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif
	" Close the tab if NERDTree is the only window remaining in it.
	autocmd BufEnter * if winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif
	autocmd BufWinEnter * if getcmdwintype() == '' | silent NERDTreeMirror | endif
	autocmd VimEnter * NERDTree | wincmd p
augroup END
let g:NERDTreeShowLineNumbers = 1

colorscheme gruvbox

let g:airline_theme = "gruvbox_material"
let g:airline#extensions#tabline#enabled = 1
let g:airline_powerline_fonts = 1
let g:airline#extensions#nerdtree_statusline = 1

" auto close scratch buffer (preview window)
autocmd InsertLeave,CompleteDone * if pumvisible() == 0 | pclose | endif

lua << EOF
require('luasnip.loaders.from_vscode').lazy_load()

local wk = require('which-key')

wk.register({
	['<C-t>'] = { '<cmd>TagbarToggle<cr>', 'Toggle symbols tree browser' },
	['<leader>ff'] = { '<cmd>Files<cr>', 'Find a file' },
	['<leader>ft'] = { '<cmd>Ag<cr>', 'Find text' },
}, {
	mode = 'n',
	silent = true,
	noremap = true,
})

wk.register({
	['<C-l>'] = { '<esc>bEa, ', 'Add , at the end of next WORD' },
}, {
	mode = 'i',
	silent = true,
	noremap = true,
})

local on_attach = function(client, bufnr)
	local bufopts = { noremap=true, silent=true, buffer=bufnr }
	vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
	vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
	vim.keymap.set('n', '<leader>n', vim.lsp.buf.rename, bufopts)
end

local cmp = require'cmp'

cmp.setup({
	snippet = {
		expand = function(args)
			require('luasnip').lsp_expand(args.body)
		end,
	},
	mapping = cmp.mapping.preset.insert({
		['<C-b>'] = cmp.mapping.scroll_docs(-4),
		['<C-f>'] = cmp.mapping.scroll_docs(4),
		['<C-Space>'] = cmp.mapping.complete(),
		['<C-e>'] = cmp.mapping.abort(),
		['<CR>'] = cmp.mapping.confirm({ select = true }),
	}),
	sources = cmp.config.sources({
		{ name = 'nvim_lsp' },
		{ name = 'luasnip' },
	}, {
		{ name = 'buffer' },
	})
})

cmp.setup.cmdline(':', {
	mapping = cmp.mapping.preset.cmdline(),
	sources = cmp.config.sources({
		{ name = 'path' }
	}, {
		{ name = 'cmdline' }
	})
})

local capabilities = require('cmp_nvim_lsp').default_capabilities()

-- Clang LSP
require('lspconfig')['clangd'].setup {
	on_attach = on_attach,
	capabilities = capabilities
}

-- Rust LSP
require('lspconfig')['rls'].setup {
	on_attach = on_attach,
	capabilities = capabilities
}

-- TypeScript LSP
require('lspconfig')['tsserver'].setup {
	on_attach = on_attach,
	capabilities = capabilities
}

-- Python LSP
require('lspconfig')['jedi_language_server'].setup {
	on_attach = on_attach,
	capabilities = capabilities
}

local null_ls = require('null-ls')

null_ls.setup({
    sources = {
        null_ls.builtins.diagnostics.eslint,
    },
})
EOF