vim.opt.tabstop = 4
vim.opt.shiftwidth = 4
vim.opt.expandtab = false
vim.opt.ignorecase = true
vim.opt.smartcase = true
vim.opt.ruler = true
vim.opt.backup = false
vim.opt.number = true
vim.opt.colorcolumn = "120"
vim.opt.exrc = true
vim.opt.secure = true
vim.opt.hidden = true

vim.opt.completeopt = { 'menu', 'menuone', 'noselect' }
vim.opt.shortmess:append('c')

-- Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
-- delays and poor user experience.
vim.opt.updatetime = 300

-- Always show the signcolumn, otherwise it would shift the text each time
-- diagnostics appear/become resolved.
-- Recently vim can merge signcolumn and number column into one
vim.opt.signcolumn = 'yes'

vim.opt.mouse = 'a' -- " Enable mouse in all modes.

--
-- Packer
--
vim.cmd [[packadd packer.nvim]]

require'packer'.startup(function()
	-- Packer can manage itself
	use 'wbthomason/packer.nvim'

	use 'mfussenegger/nvim-dap'
	use 'airblade/vim-gitgutter'
	use 'neovim/nvim-lspconfig'
	use 'dense-analysis/ale'
	use 'liuchengxu/vista.vim' -- Tag bar.
	use {
		'nvim-treesitter/nvim-treesitter',
		run = ':TSUpdate'
	}

	-- Git.
	use 'tpope/vim-fugitive'
	use {
		'sindrets/diffview.nvim',
		requires = {'nvim-lua/plenary.nvim'}
	}

	-- File browser.
	use {
		'kyazdani42/nvim-tree.lua',
		requires = {'nvim-tree/nvim-web-devicons'} -- optional, for file icon
	}
	use {
		'nvim-telescope/telescope.nvim',
		requires = {'nvim-lua/plenary.nvim'}
	}
	use 'nvim-telescope/telescope-ui-select.nvim'
	use {
		'kevinhwang91/nvim-ufo',
		requires = {'kevinhwang91/promise-async'}
	}

	-- Theme.
	use 'qaptoR-nvim/chocolatier.nvim'
	use {
		'nvim-lualine/lualine.nvim',
		requires = {'nvim-tree/nvim-web-devicons'} -- optional, for status line icons
	}

	-- Syntax.
	use 'leafOfTree/vim-vue-plugin'
	use 'mfussenegger/nvim-jdtls'
	use 'dart-lang/dart-vim-plugin'
	use {
		'akinsho/flutter-tools.nvim',
		requires = {
			'nvim-lua/plenary.nvim'
		}
	}
	use 'vim-vdebug/vdebug'

	-- nvim-cmp
	use 'dcampos/nvim-snippy'
	use 'hrsh7th/cmp-nvim-lsp'
	use 'hrsh7th/nvim-cmp'
	use 'dcampos/cmp-snippy'
	use 'hrsh7th/cmp-path'
	use 'hrsh7th/cmp-buffer'
end)

require'plugins'
require'lspserver'

--
-- Theme
--
vim.cmd('colorscheme chocolatier')
vim.opt.termguicolors = true

-- Mappings.
-- See `:help vim.diagnostic.*` for documentation on any of the below functions
local opts = { noremap = true, silent = true }
vim.keymap.set('n', '<space>e', vim.diagnostic.open_float, opts)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, opts)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next, opts)
vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist, opts)