local lspconfig = require("lspconfig")

local on_attach = function(client, bufnr)
	vim.api.nvim_buf_set_option(bufnr, "omnifunc", "v:lua.vim.lsp.omnifunc")

	local opts = { noremap = true, silent = true }

	-- Mappings.
	-- See `:help vim.lsp.*` for documentation on any of the below functions
	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", "K", "<cmd>lua vim.lsp.buf.hover()<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)

	-- TODO(ade): Sort out space. This will conflict with the leader key
	vim.api.nvim_buf_set_keymap(bufnr, "n", "<space>rn", "<cmd>lua vim.lsp.buf.rename()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "<space>ca", "<cmd>lua vim.lsp.buf.code_action()<CR>", opts)
end

local capabilities = require("cmp_nvim_lsp").update_capabilities(vim.lsp.protocol.make_client_capabilities())
capabilities.textDocument.completion.completionItem.snippetSupport = true

local servers = { "tsserver", "intelephense", "psalm", "gopls", "html", "cssls", "solargraph", "rust_analyzer" }
for _, lsp in ipairs(servers) do
	lspconfig[lsp].setup({
		on_attach = on_attach,
		capabilities = capabilities,
		init_options = {
			usePlaceholders = true,
		},
	})
end

lspconfig.emmet_ls.setup({
	on_attach = on_attach,
	capabilities = capabilities,
	filetypes = { "html", "typescriptreact", "javascriptreact", "css", "scss", "eruby" },
	init_options = {
		usePlaceholders = true,
	},
})

lspconfig.sumneko_lua.setup({
	settings = {
		Lua = {
			runtime = {
				-- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
				version = "LuaJIT",
			},
			diagnostics = {
				-- Get the language server to recognize the `vim` global
				globals = { "vim" },
			},
			workspace = {
				-- Make the server aware of Neovim runtime files
				library = vim.api.nvim_get_runtime_file("", true),
			},
			-- Do not send telemetry data containing a randomized but unique identifier
			telemetry = {
				enable = false,
			},
		},
	},
})

-- Change the diagnostic signs
vim.fn.sign_define("DiagnosticSignHint", { text = "➤", texthl = "DiagnosticSignHint", numhl = "DiagnosticSignHint" })
vim.fn.sign_define("DiagnosticSignInfo", { text = "ℹ", texthl = "DiagnosticSignInfo", numhl = "DiagnosticSignInfo" })
vim.fn.sign_define("DiagnosticSignWarn", { text = "⚠", texthl = "DiagnosticSignWarn", numhl = "DiagnosticSignWarn" })
vim.fn.sign_define(
	"DiagnosticSignError",
	{ text = "✖", texthl = "DiagnosticSignError", numhl = "DiagnosticSignError" }
)