nvim/lua/plugins/lsp.lua

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)

local lsp_attach = function(client, buf)
	vim.api.nvim_buf_set_option(buf, "formatexpr", "v:lua.vim.lsp.formatexpr()")
	vim.api.nvim_buf_set_option(buf, "omnifunc", "v:lua.vim.lsp.omnifunc")
	vim.api.nvim_buf_set_option(buf, "tagfunc", "v:lua.vim.lsp.tagfunc")

	local bufopts = { noremap = true, silent = true, buffer = buf }
	vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
	vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
	vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
	vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
	vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
	vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, bufopts)
	vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, bufopts)
	vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
	vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
end

return {
	-- lsp
	{
		'williamboman/mason.nvim',
		config = true
	},
	{
		'williamboman/mason-lspconfig.nvim',
		config = true
	},
	{
		'neovim/nvim-lspconfig',
		config = function()
			local capabilities = require('cmp_nvim_lsp').default_capabilities()
			local lspconfig = require('lspconfig')

			lspconfig.lua_ls.setup {
				capabilities = capabilities,
				settings = {
					Lua = {
						diagnostics = {
							globals = { 'vim' }
						}
					}
				},
				on_attach = lsp_attach
			}
			lspconfig.tsserver.setup {
				capabilities = capabilities,
				on_attach = lsp_attach
			}
			lspconfig.gopls.setup {
				capabilities = capabilities,
				on_attach = lsp_attach
			}
			--lspconfig.rust_analyzer.setup {
			--	capabilities = capabilities,
			--	on_attach = lsp_attach
			--}
			require("rust-tools").setup({
				server = {
					capabilities = capabilities,
					on_attach = lsp_attach,
					standalone = false
				}
			})
			lspconfig.bashls.setup {
				capabilities = capabilities,
				on_attach = lsp_attach
			}
			lspconfig.sqlls.setup({
				capabilities = capabilities,
				on_attach = lsp_attach
			})
			lspconfig.html.setup({
				capabilities = capabilities,
				on_attach = lsp_attach
			})
			lspconfig.cssls.setup({
				capabilities = capabilities,
				on_attach = lsp_attach
			})
			lspconfig.tailwindcss.setup({
				capabilities = capabilities,
				on_attach = lsp_attach
			})
			capabilities.textDocument.completion.completionItem.snippetSupport = true
			lspconfig.emmet_ls.setup({
				capabilities = capabilities,
				on_attach = lsp_attach
			})
		end
	},
	{ 'simrat39/rust-tools.nvim' },
	{ 'onsails/lspkind-nvim' }, -- pictograms replace (?) with lspsaga
	{ 'j-hui/fidget.nvim' }, -- show lsp status
	-- completion
	{
		'hrsh7th/nvim-cmp',
		config = function() 
			local cmp = require('cmp')
			local lspkind = require('lspkind')

			vim.opt.shortmess:append 'c'

			cmp.setup({
				snippet = {
					expand = function(args)
						require('luasnip').lsp_expand(args.body)
					end,
				},
				mapping = cmp.mapping.preset.insert({
					["<C-n>"] = cmp.mapping.select_next_item { behavior = cmp.SelectBehavior.Insert },
					["<C-p>"] = cmp.mapping.select_prev_item { behavior = cmp.SelectBehavior.Insert },
					['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
					['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
					['<C-s>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
					['<C-y>'] = cmp.mapping.confirm({
						behavior = cmp.ConfirmBehavior.Insert,
						select = true
					}),
					['<C-e>'] = cmp.mapping({
						i = cmp.mapping.abort(),
						c = cmp.mapping.close(),
					}),
					['<CR>'] = cmp.mapping.confirm({ select = true }),
				}),
				sources = cmp.config.sources({
					{ name = 'nvim_lua' },
					{ name = 'nvim_lsp' },
					{ name = 'path' },
					{ name = 'luasnip' },
					{ name = 'nvim_lsp_signature_help' },
					}, {
						{ name = 'buffer', keyword_length = 5 },
				}),
				formatting = {
					format = lspkind.cmp_format {
						with_text = true,
						menu = {
							buffer = "[buf]",
							nvim_lsp = "[LSP]",
							nvim_lua = "[api]",
							path = "[path]",
							luasnip = "[snip]",
						}
					}
				}
			})

			-- Use buffer source for `/` (basically search words in buffer)
			cmp.setup.cmdline('/', {
				sources = {
					{ name = 'buffer' }
				}
			})

			-- Use cmdline & path source for ':'
			cmp.setup.cmdline(':', {
				sources = cmp.config.sources({
					{ name = 'path' }
					}, {
						{ name = 'cmdline' }
				})
			})
		end,
		event = 'InsertEnter',
		dependencies = {
			'hrsh7th/cmp-nvim-lsp',
			'hrsh7th/cmp-nvim-lsp-signature-help',
			'hrsh7th/cmp-buffer',
			'hrsh7th/cmp-path',
			'hrsh7th/cmp-nvim-lua',
			'hrsh7th/cmp-cmdline',
			'saadparwaiz1/cmp_luasnip',
		}
	},
	{
		'L3MON4D3/LuaSnip',
		config = function()
			require("luasnip.loaders.from_lua").load({ paths = "~/.config/nvim/snippets/" })
		end
	},
	{
		'windwp/nvim-autopairs',
		config = true
	},
}
--	-- Linting & formtatting
--	'jose-elias-alvarez/null-ls.nvim';