main.lua

local util = require('one.util')
local symbolMap = require('one.config').config.symbolMap

local M = { 'neovim/nvim-lspconfig' }

local SeverityMap = {
	[vim.diagnostic.severity.ERROR] = symbolMap.ERROR,
	[vim.diagnostic.severity.WARN] = symbolMap.WARN,
	[vim.diagnostic.severity.INFO] = symbolMap.INFO,
	[vim.diagnostic.severity.HINT] = symbolMap.HINT,
}

M.highlights = function(config)
	local c = config.colors
	return {
		LspWindowBorder = { fg = c.cyan },
		LspInfoTitle = { fg = c.lightGreen }, -- Client name
		LspInfoList = { fg = c.lightGreen }, -- Server name list
		LspInfoFiletype = { fg = c.purple }, -- `filetypes` area
		LspInfoTip = { link = 'Comment' }, -- Tip
		LspInfoBorder = { fg = c.blue }, -- Window border

		DiagnosticUnnecessary = { fg = c.grey, undercurl = true },

		DiagnosticError = { fg = c.red },
		DiagnosticWarn = { fg = c.yellow },
		DiagnosticInfo = { fg = c.blue },
		DiagnosticHint = { fg = c.cyan },
		DiagnosticOk = { fg = c.lightGreen },

		DiagnosticSignError = { fg = c.red },
		DiagnosticSignWarn = { fg = c.yellow },
		DiagnosticSignInfo = { fg = c.blue },
		DiagnosticSignHint = { fg = c.cyan },
		DiagnosticSignOk = { fg = c.lightGreen },

		DiagnosticUnderlineError = { fg = c.red, undercurl = true },
		DiagnosticUnderlineWarn = { fg = c.yellow, undercurl = true },
		DiagnosticUnderlineInfo = { fg = c.blue, undercurl = true },
		DiagnosticUnderlineHint = { fg = c.cyan, undercurl = true },
		DiagnosticUnderlineOk = { fg = c.lightGreen, undercurl = true },
	}
end

M.defaultConfig = {
	'lsp',
	{
		log = { level = 'WARN' }, -- 'TRACE', 'DEBUG', 'INFO', 'WARN', 'ERROR', 'OFF'

		masonLspconfig = { automatic_installation = false },

		cursorHoldUptime = 100, -- millisecond. see ":h updatetime"

		-- Change lsp.setup(opts). Format: {['lsp_name'] = settings}
		-- ":h lspconfig-all" or https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
		-- for LSP configs provided by nvim-lspconfig
		setup = {

			-- https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#tsserver
			tsserver = {
				filetypes = { -- limit tsserver only .ts files
					'typescript',
					'typescriptreact',
					'typescript.tsx',
				},
			},

			-- https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#clangd
			clangd = {
				cmd = { 'clangd', '--enable-config' }, -- allow .clangd file
				-- Fix: multiple different client offset_encodings detected for buffer
				-- https://github.com/jose-elias-alvarez/null-ls.nvim/issues/428#issuecomment-997226723
				capabilities = { offsetEncoding = { 'utf-16' } },
			},

			-- sumneko_lua = {
			-- 	-- You can write lsp.settings in lua. Or write it to lsp-settings/<lsp_name>.yaml file (See nlsp features).
			-- 	-- If have the same key, the value in the YAML file will take precedence.
			-- 	settings = { Lua = { diagnostics = { globals = {} } } },
			-- },
		},

		diagnostic = { -- :h vim.diagnostic.config
			virtual_text = false,
			signs = true,
			underline = true,
			update_in_insert = false,
			severity_sort = true,
			float = {
				wrap = true,
				max_width = 120,
				max_height = 20,
				focusable = false,
				source = false, -- (boolean or string) Show source in diagnostics. Values: 'always' or 'if_many'
				prefix = ' ',
				scope = 'cursor',
				format = function(d)
					return string.format('%s %s %s: [%s] %s', SeverityMap[d.severity], d.col, d.source, d.code,
						d.message)
				end,

				close_events = { 'BufLeave', 'CursorMoved', 'InsertEnter', 'FocusLost' },

				border = { -- See the border property of ":h nvim_open_win"
					{ '╭', 'LspWindowBorder' },
					{ '─', 'LspWindowBorder' },
					{ '╮', 'LspWindowBorder' },
					{ '│', 'LspWindowBorder' },
					{ '╯', 'LspWindowBorder' },
					{ '─', 'LspWindowBorder' },
					{ '╰', 'LspWindowBorder' },
					{ '│', 'LspWindowBorder' },
				},

				-- border = {
				--   { '╔', 'LspWindowBorder' },
				--   { '═', 'LspWindowBorder' },
				--   { '╗', 'LspWindowBorder' },
				--   { '║', 'LspWindowBorder' },
				--   { '╝', 'LspWindowBorder' },
				--   { '═', 'LspWindowBorder' },
				--   { '╚', 'LspWindowBorder' },
				--   { '║', 'LspWindowBorder' },
				-- },
			},
		},
	},
}

local function setDefaultBorder(conf)
	local border = conf.diagnostic.float.border
	require('lspconfig.ui.windows').default_options.border = border -- This line maybe not work
	vim.lsp.handlers['textDocument/hover'] = vim.lsp.with(vim.lsp.handlers.hover, { border = border })
	vim.lsp.handlers['textDocument/signatureHelp'] = vim.lsp.with(vim.lsp.handlers.signature_help,
		{ border = border })
end

function M.config(config)
	local conf = config.lsp

	vim.o.updatetime = conf.cursorHoldUptime

	vim.lsp.set_log_level(conf.log.level)
	vim.diagnostic.config(conf.diagnostic)
	setDefaultBorder(conf)

	local masonLspconfig = require('mason-lspconfig')
	masonLspconfig.setup(conf.masonLspconfig)
	-- Newly installed LSP without having to restart Neovim!
	masonLspconfig.setup_handlers {
		-- The first entry (without a key) will be the default handler
		-- and will be called for each installed server that doesn't have
		-- a dedicated handler.
		function(serverName) -- default handler (optional)
			local lspconfig = require('lspconfig')

			-- https://github.com/hrsh7th/cmp-nvim-lsp#capabilities
			local capabilities = require('cmp_nvim_lsp').default_capabilities()

			local opts = config.lsp.setup[serverName] or {}
			if type(opts) == 'function' then opts = opts(lspconfig) or {} end

			opts = util.merge({
				-- Use LspAttach autocmd insteads of on_attach function
				-- on_attach = function(client, bufnr) end,
				capabilities = capabilities,
				autostart = true,
				flags = {
					debounce_text_changes = 150, -- This is default in neovim 0.7+
				},
			}, opts)

			-- :h lspconfig-setup
			lspconfig[serverName].setup(opts)
		end,

		-- Next, you can provide a dedicated handler for specific servers.
		-- For example, a handler override for the `rust_analyzer`:
		-- ['rust_analyzer'] = function()
		-- 	require('rust-tools').setup {}
		-- end,
	}
end

M.signs = function()
	local map = {
		Error = symbolMap.ERROR,
		Warn = symbolMap.WARN,
		Hint = symbolMap.HINT,
		Info = symbolMap.INFO,
	}

	local signs = {}

	for type, icon in pairs(map) do
		local hl = 'DiagnosticSign' .. type
		signs[hl] = { text = icon, texthl = hl, numhl = hl }
	end

	return signs
end

M.keymaps = require('one.plugins.lsp.keymaps')

M.autocmds = {
	-- Show line diagnostics automatically in hover window
	-- The CursorHold autocmd is triggered when updatetime.
	CursorHold = {
		callback = function()
			vim.diagnostic.open_float()
		end,
	},
}

return M