local M = {}

function M.config()
	local status_lsp_installer_ok, lsp_installer = pcall(require, "nvim-lsp-installer")
	if not status_lsp_installer_ok then
		return
	end

	local function lsp_highlight_document(client)
		if client.resolved_capabilities.document_highlight then
		vim.api.nvim_exec(
			[[
				augroup lsp_document_highlight
				autocmd! * <buffer>
				autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
				autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
				augroup END
			]],
			false
		)
		end
	end

	local function lsp_keymaps(bufnr)
		local opts = { noremap = true, silent = true }
		vim.api.nvim_buf_set_keymap(bufnr, "n", "gD", "<cmd>lua vim.lsp.buf.declaration()<CR>", opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "gd", "<cmd>lua vim.lsp.buf.definition()<CR>", opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "go", "<cmd>lua vim.diagnostic.open_float()<CR>", opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "[d", '<cmd>lua vim.diagnostic.goto_prev({ border = "rounded" })<CR>', opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "]d", '<cmd>lua vim.diagnostic.goto_next({ border = "rounded" })<CR>', opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>ll", "<cmd>lua vim.diagnostic.setloclist()<CR>", opts)
		vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>lf", "<cmd>lua vim.lsp.buf.formatting_sync()<CR>", opts)
		--vim.cmd [[ command! Format execute 'lua vim.lsp.buf.formatting()' ]]
	end

	local on_attach = function(client, bufnr)
		if client.name == "tsserver" then
			client.resolved_capabilities.document_formatting = false
		end
		if client.name == "jsonls" then
			client.resolved_capabilities.document_formatting = false
		end
		if client.name == "html" then
			client.resolved_capabilities.document_formatting = false
		end
		if client.name == "sumneko_lua" then
			client.resolved_capabilities.document_formatting = false
		end
		lsp_keymaps(bufnr)
		lsp_highlight_document(client)
	end

	local client_capabilities = vim.lsp.protocol.make_client_capabilities()

	-- Add cmp_nvim_lsp capabilities
	local status_cmp_nvim_lsp_ok, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
	if not status_cmp_nvim_lsp_ok then
		return
	end

	local capabilities = cmp_nvim_lsp.update_capabilities(client_capabilities)

	lsp_installer.on_server_ready(function(server)
		local opts = server:get_default_options()
		opts.on_attach = on_attach
		opts.capabilities = capabilities

		opts.settings = {
			Lua = {
				diagnostics = {
					globals = { 'vim' }
				}
			}
		}

		server:setup(opts)
	end)
end

return M