-- plugin for language servers
return {
	"neovim/nvim-lspconfig",
	dependencies = {
		-- Automatically install LSPs and related tools to stdpath for Neovim
		{ "williamboman/mason.nvim", config = true }, -- NOTE: Must be loaded before dependants
		"williamboman/mason-lspconfig.nvim",
		"WhoIsSethDaniel/mason-tool-installer.nvim",

		-- Useful status updates for LSP.
		-- NOTE: `opts = {}` is the same as calling `require('fidget').setup({})`
		{
			"j-hui/fidget.nvim",
			tag = "v1.4.0",
			opts = {
				progress = {
					display = {
						done_icon = "✓", -- Icon shown when all LSP progress tasks are complete
					},
				},
				notification = {
					window = {
						winblend = 0, -- Background color opacity in the notification window
					},
				},
			},
		},
	},
	config = function()
		vim.api.nvim_create_autocmd("LspAttach", {
			group = vim.api.nvim_create_augroup("kickstart-lsp-attach", { clear = true }),
			-- Create a function that lets us more easily define mappings specific
			-- for LSP related items. It sets the mode, buffer and description for us each time.
			callback = function(event)
				local map = function(keys, func, desc, mode)
					mode = mode or "n"
					vim.keymap.set(mode, keys, func, { buffer = event.buf, desc = "LSP: " .. desc })
				end

				-- Jump to the definition of the word under your cursor.
				--  This is where a variable was first declared, or where a function is defined, etc.
				--  To jump back, press <C-t>.
				map("gd", require("telescope.builtin").lsp_definitions, "[G]oto [D]efinition")

				-- Find references for the word under your cursor.
				map("gr", require("telescope.builtin").lsp_references, "[G]oto [R]eferences")

				-- Jump to the implementation of the word under your cursor.
				--  Useful when your language has ways of declaring types without an actual implementation.
				map("gI", require("telescope.builtin").lsp_implementations, "[G]oto [I]mplementation")

				-- Jump to the type of the word under your cursor.
				--  Useful when you're not sure what type a variable is and you want to see
				--  the definition of its *type*, not where it was *defined*.
				map("<leader>D", require("telescope.builtin").lsp_type_definitions, "Type [D]efinition")

				-- Fuzzy find all the symbols in your current document.
				--  Symbols are things like variables, functions, types, etc.
				map("<leader>ds", require("telescope.builtin").lsp_document_symbols, "[D]ocument [S]ymbols")

				-- Fuzzy find all the symbols in your current workspace.
				--  Similar to document symbols, except searches over your entire project.
				map("<leader>ws", require("telescope.builtin").lsp_dynamic_workspace_symbols, "[W]orkspace [S]ymbols")

				-- Rename the variable under your cursor.
				--  Most Language Servers support renaming across files, etc.
				map("<leader>rn", vim.lsp.buf.rename, "[R]e[n]ame")

				-- Execute a code action, usually your cursor needs to be on top of an error
				-- or a suggestion from your LSP for this to activate.
				map("<leader>ca", vim.lsp.buf.code_action, "[C]ode [A]ction", { "n", "x" })

				-- Opens a popup that displays documentation about the word under your cursor
				--  See `:help K` for why this keymap
				map("K", vim.lsp.buf.hover, "[K]ontext - Show Tooltip")

				-- WARN: This is not Goto Definition, this is Goto Declaration.
				--  For example, in C this would take you to the header.
				map("gD", vim.lsp.buf.declaration, "[G]oto [D]eclaration")

				map("<leader>df", vim.diagnostic.open_float, "show diagnostic in floating window")

				-- The following two autocommands are used to highlight references of the
				-- word under your cursor when your cursor rests there for a little while.
				--    See `:help CursorHold` for information about when this is executed
				--
				-- When you move your cursor, the highlights will be cleared (the second autocommand).
				local client = vim.lsp.get_client_by_id(event.data.client_id)
				if client and client.supports_method(vim.lsp.protocol.Methods.textDocument_documentHighlight) then
					local highlight_augroup = vim.api.nvim_create_augroup("kickstart-lsp-highlight", { clear = false })
					vim.api.nvim_create_autocmd({ "CursorHold", "CursorHoldI" }, {
						buffer = event.buf,
						group = highlight_augroup,
						callback = vim.lsp.buf.document_highlight,
					})

					vim.api.nvim_create_autocmd({ "CursorMoved", "CursorMovedI" }, {
						buffer = event.buf,
						group = highlight_augroup,
						callback = vim.lsp.buf.clear_references,
					})

					vim.api.nvim_create_autocmd("LspDetach", {
						group = vim.api.nvim_create_augroup("kickstart-lsp-detach", { clear = true }),
						callback = function(event2)
							vim.lsp.buf.clear_references()
							vim.api.nvim_clear_autocmds({ group = "kickstart-lsp-highlight", buffer = event2.buf })
						end,
					})
				end

				-- The following code creates a keymap to toggle inlay hints in your
				-- code, if the language server you are using supports them
				--
				-- This may be unwanted, since they displace some of your code
				if client and client.supports_method(vim.lsp.protocol.Methods.textDocument_inlayHint) then
					map("<leader>th", function()
						vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled({ bufnr = event.buf }))
					end, "[T]oggle Inlay [H]ints")
				end
			end,
		})

		local capabilities = vim.lsp.protocol.make_client_capabilities()
		capabilities = vim.tbl_deep_extend("force", capabilities, require("cmp_nvim_lsp").default_capabilities())

		-- Enable the following language servers
		local servers = {
			clangd = {},
			marksman = {},
			lua_ls = {
				settings = {
					Lua = {
						completion = {
							callSnippet = "Replace",
						},
						runtime = { version = "LuaJIT" },
						workspace = {
							checkThirdParty = false,
							library = {
								"${3rd}/luv/library",
								unpack(vim.api.nvim_get_runtime_file("", true)),
							},
						},
						diagnostics = { disable = { "missing-fields" } },

						-- You can toggle below to ignore Lua_LS's noisy `missing-fields` warnings
						-- diagnostics = { disable = { 'missing-fields' } },
					},
				},
			},
			pylsp = {
				settings = {
					pylsp = {
						plugins = {
							pyflakes = { enabled = false },
							pycodestyle = { enabled = false },
							autopep8 = { enabled = false },
							yapf = { enabled = false },
							mccabe = { enabled = false },
							pylsp_mypy = { enabled = false },
							pylsp_black = { enabled = false },
							pylsp_isort = { enabled = false },
						},
					},
				},
			},
			ruff = {
				-- Notes on code actions: https://github.com/astral-sh/ruff-lsp/issues/119#issuecomment-1595628355
				-- Get isort like behavior: https://github.com/astral-sh/ruff/issues/8926#issuecomment-1834048218
				commands = {
					RuffAutofix = {
						function()
							vim.lsp.buf.execute_command({
								command = "ruff.applyAutofix",
								arguments = {
									{ uri = vim.uri_from_bufnr(0) },
								},
							})
						end,
						description = "Ruff: Fix all auto-fixable problems",
					},
					RuffOrganizeImports = {
						function()
							vim.lsp.buf.execute_command({
								command = "ruff.applyOrganizeImports",
								arguments = {
									{ uri = vim.uri_from_bufnr(0) },
								},
							})
						end,
						description = "Ruff: Format imports",
					},
				},
			},
			rust_analyzer = {
				["rust-analyzer"] = {
					cargo = {
						features = "all",
					},
					checkOnSave = true,
					check = {
						command = "clippy",
					},
				},
			},
		}

		-- Ensure the servers and tools above are installed
		require("mason").setup()

		-- You can add other tools here that you want Mason to install
		-- for you, so that they are available from within Neovim.
		local ensure_installed = vim.tbl_keys(servers or {})
		vim.list_extend(ensure_installed, {
			"stylua", -- Used to format Lua code
			"clangd",
			"rust-analyzer",
		})
		require("mason-tool-installer").setup({ ensure_installed = ensure_installed })

		-- vim.cmd([[autocmd! ColorScheme * highlight NormalFloat guibg=#1f2335]])
		-- vim.cmd([[autocmd! ColorScheme * highlight FloatBorder guifg=white guibg=#1f2335]])

		local border = {
			{ "╭", "FloatBorder" },
			{ "─", "FloatBorder" },
			{ "╮", "FloatBorder" },
			{ "│", "FloatBorder" },
			{ "╯", "FloatBorder" },
			{ "─", "FloatBorder" },
			{ "╰", "FloatBorder" },
			{ "│", "FloatBorder" },
		}

		local orig_util_open_floating_preview = vim.lsp.util.open_floating_preview
		function vim.lsp.util.open_floating_preview(contents, syntax, opts, ...)
			opts = opts or {}
			opts.border = opts.border or border
			return orig_util_open_floating_preview(contents, syntax, opts, ...)
		end

		require("mason-lspconfig").setup({
			handlers = {
				function(server_name)
					local server = servers[server_name] or {}
					-- This handles overriding only values explicitly passed
					-- by the server configuration above. Useful when disabling
					-- certain features of an LSP (for example, turning off formatting for ts_ls)
					server.capabilities = vim.tbl_deep_extend("force", {}, capabilities, server.capabilities or {})
					require("lspconfig")[server_name].setup(server)
				end,
			},
		})
	end,
}
