-- Helper function for creating keymaps.
function nnoremap(rhs, lhs, desc)
	local bufopts = { noremap=true, silent=true, buffer=bufnr, desc = desc }

	vim.keymap.set("n", rhs, lhs, bufopts)
end

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
function default_on_attach(client, bufnr)
	-- Enable completion triggered by <c-x><c-o>
	vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

	-- Mappings.
	-- See `:help vim.lsp.*` for documentation on any of the below functions
	nnoremap('gD', vim.lsp.buf.declaration, "Go to declaration")
	nnoremap('gd', vim.lsp.buf.definition, "Go to definition")
	nnoremap('K', vim.lsp.buf.hover, "Hover text")
	nnoremap('gi', vim.lsp.buf.implementation, "Go to implementation")
	nnoremap('<C-k>', vim.lsp.buf.signature_help, "Show signature")
	nnoremap('<space>wa', vim.lsp.buf.add_workspace_folder, "Add workspace folder")
	nnoremap('<space>wr', vim.lsp.buf.remove_workspace_folder, "Remove workspace folder")
	nnoremap('<space>wl', function()
		print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
	end, "List workspace folders")
	nnoremap('<space>D', vim.lsp.buf.type_definition, "Go to type definition")
	nnoremap('<space>rn', vim.lsp.buf.rename, "Rename")
	nnoremap('<space>ca', vim.lsp.buf.code_action, "Code actions")
	nnoremap('gr', vim.lsp.buf.references, "Find references")
	nnoremap('<space>f', function() vim.lsp.buf.format { async = true } end, "Format file")
end

function read_configuration()
	local configuration = {}
	local chunk, err = loadfile(os.getenv('HOME') .. '/.config/nvim/config', 't', configuration)
	if chunk then
		chunk()
	end
	return configuration
end