-- Ensure packer in installed
local ensure_packer = function()
	local fn = vim.fn
	local install_path = fn.stdpath("data") .. "/site/pack/packer/start/packer.nvim"
	if fn.empty(fn.glob(install_path)) > 0 then
		fn.system({ "git", "clone", "--depth", "1", "https://github.com/wbthomason/packer.nvim", install_path })
		vim.cmd([[packadd packer.nvim]])
		return true
	end
	return false
end

local packer_bootstrap = ensure_packer()

-- Actual plugins

local use = require("packer").use

require("packer").startup(function()
	use("wbthomason/packer.nvim") -- Package manager
	use({
		"williamboman/mason.nvim", -- LSP Server manager etc
		"williamboman/mason-lspconfig.nvim",
		"neovim/nvim-lspconfig", -- Configurations for Nvim LSP
	})

	-- Autocomplete
	use("hrsh7th/cmp-nvim-lsp")
	use("hrsh7th/cmp-buffer")
	use("hrsh7th/cmp-path")
	use("hrsh7th/cmp-cmdline")
	use("hrsh7th/nvim-cmp")
	use("hrsh7th/cmp-vsnip")
	use("hrsh7th/vim-vsnip")

	use("nvim-treesitter/nvim-treesitter")

	-- Auto format
	use("sbdchd/neoformat")

	-- Automatically set up configuration after cloning packer.nvim
	if packer_bootstrap then
		require("packer").sync()
	end
end)

-- Setup mason
require("mason").setup()
require("mason-lspconfig").setup()




-- Setup nvim-cmp
local cmp = require("cmp")

cmp.setup({
	snippet = {
		-- REQUIRED - you must specify a snippet engine
		expand = function(args)
			vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
			-- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
			-- require('snippy').expand_snippet(args.body) -- For `snippy` users.
			-- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
		end,
		vim.lsp.buf.format,
	},
	window = {

		-- completion = cmp.config.window.bordered(),
		-- documentation = cmp.config.window.bordered(),
	},
	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 }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
	}),
	sources = cmp.config.sources({
		{ name = "nvim_lsp" },
		{ name = "vsnip" }, -- For vsnip users.
		-- { name = 'luasnip' }, -- For luasnip users.
		-- { name = 'ultisnips' }, -- For ultisnips users.
		-- { name = 'snippy' }, -- For snippy users.
	}, {
		{ name = "buffer" },
	}),
})

-- Set configuration for specific filetype.
cmp.setup.filetype("gitcommit", {
	sources = cmp.config.sources({
		{ name = "cmp_git" }, -- You can specify the `cmp_git` source if you were installed it.
	}, {
		{ name = "buffer" },
	}),
})

-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline({ "/", "?" }, {
	mapping = cmp.mapping.preset.cmdline(),
	sources = {
		{ name = "buffer" },
	},
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(":", {
	mapping = cmp.mapping.preset.cmdline(),
	sources = cmp.config.sources({
		{ name = "path" },
	}, {
		{ name = "cmdline" },
	}, {
		{ name = "stylua" },
	}),
})

-- Set up lspconfig.
local capabilities = require("cmp_nvim_lsp").default_capabilities()
-- Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
--for lsp_server_name,v in pairs(require('lspconfig')) do
--	require('lspconfig')[lsp_server_name].setup {
--		capabilities = capabilities
--	}
-- end
-- require('lspconfig')['stylua'].setup {
--	capabilities = capabilities
-- }