local lsp_config = require("lspconfig")

local function set_key(mode, keys, v, opts)
	return vim.keymap.set(mode, keys, v, opts)
end

local function on_attach(client, bufnr)
	do
		local bufopts = { noremap = true, silent = true, buffer = bufnr }
		set_key("n", "gD", vim.lsp.buf.declaration, bufopts)
		set_key("n", "gd", vim.lsp.buf.definition, bufopts)
		set_key("n", "K", vim.lsp.buf.hover, bufopts)
		set_key("n", "gi", vim.lsp.buf.implementation, bufopts)
		set_key("n", "<C-s>", vim.lsp.buf.signature_help, bufopts)
		set_key("n", "<space>rn", vim.lsp.buf.declaration, bufopts)
		set_key("n", "<space>ca", vim.lsp.buf.code_action, bufopts)
		set_key("n", "<space>f", vim.lsp.buf.formatting, bufopts)
	end
	return bufnr
end

local function setup(f)
	return f({ on_attach = on_attach })
end

local function load_all(l)
	for _, v in ipairs(l) do
		setup(v)
	end
	return nil
end

load_all({
	lsp_config.rust_analyzer.setup,
	lsp_config.clangd.setup,
	lsp_config.cssls.setup,
	lsp_config.html.setup,
	lsp_config.emmet_ls.setup,
	lsp_config.pylsp.setup,
	lsp_config.zls.setup,
	lsp_config.tsserver.setup,
})

lsp_config.gopls.setup({
	cmd_env = { GOFLAGS = "-tags=unit,integration,e2e" },
	on_attach = on_attach,
})

lsp_config.lua_ls.setup({
	settings = {
		Lua = {
			diagnostics = {
				globals = { "vim" },
			},
		},
	},
})