local lsp_installer = require("nvim-lsp-installer")

local opts = {}

local on_attach = function()
	local function set_keymap(...) vim.api.nvim_set_keymap(...) end
	local function set_option(...) vim.api.nvim_set_option(...) end

	-- Enable completion triggered by <c-x><c-o>
	set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')

	-- Mappings.
	local opts = { noremap=true, silent=true }

	-- See `:help vim.lsp.*` for documentation on any of the below functions
	set_keymap('', ';lc', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
	set_keymap('', ';lf', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
	set_keymap('', ';lh', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
	set_keymap('', ';li', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
	set_keymap('', ';ls', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
	set_keymap('', ';lwa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
	set_keymap('', ';lwr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
	set_keymap('', ';lw', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
	set_keymap('', ';lt', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
	set_keymap('', ';lr', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
	set_keymap('', ';la', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
	set_keymap('', ';le', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
	set_keymap('', ';lo', '<cmd>lua vim.diagnostic.open_float()<CR>', opts)
	set_keymap('', ';ln', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
	set_keymap('', ';lp', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
	set_keymap('', ';lm', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
end
on_attach()