-- Setup language servers
local lspconfig = require('lspconfig')
lspconfig.lua_ls.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',
					'require'
				},
			},
			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,
			},
		},
	},
}
lspconfig.clangd.setup {}

-- Global mappings.
-- See `:help vim.diagnostic.*` for documentation on any of the below functions
vim.keymap.set('n', '<leader>e', vim.diagnostic.open_float)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist)

-- Use LspAttach autocommand to only map the following keys
-- after the language server attaches to the current buffer
vim.api.nvim_create_autocmd('LspAttach', {
	group = vim.api.nvim_create_augroup('UserLspConfig', {}),
	callback = function(ev)
		-- Enable completion triggered by <c-x><c-o>
		vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'

		-- Buffer local mappings.
		-- See `:help vim.lsp.*` for documentation on any of the below functions
		local opts = { buffer = ev.buf }
		vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
		vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
		vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
		vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
		vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
		vim.keymap.set('n', '<leader>wa', vim.lsp.buf.add_workspace_folder, opts)
		vim.keymap.set('n', '<leader>wr', vim.lsp.buf.remove_workspace_folder, opts)
		vim.keymap.set('n', '<leader>wl', function()
			print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
		end, opts)
		vim.keymap.set('n', '<leader>D', vim.lsp.buf.type_definition, opts)
		vim.keymap.set('n', '<leader>rn', vim.lsp.buf.rename, opts)
		vim.keymap.set({ 'n', 'v' }, '<leader>ca', vim.lsp.buf.code_action, opts)
		vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
		vim.keymap.set('n', '<leader>f', function()
			vim.lsp.buf.format { async = true }
		end, opts)
	end,
})


local signs = { Error = "󰅚 ", Warn = " ", Hint = " ", Info = " " }
vim.diagnostic.config({
	signs = {
		enable = true,
		text = {
			["ERROR"] = signs.Error,
			["WARN"] = signs.Warn,
			["HINT"] = signs.Hint,
			["INFO"] = signs.Info,
		},
		texthl = {
			["ERROR"] = "DiagnosticDefault",
			["WARN"] = "DiagnosticDefault",
			["HINT"] = "DiagnosticDefault",
			["INFO"] = "DiagnosticDefault",
		},
		numhl = {
			["ERROR"] = "DiagnosticDefault",
			["WARN"] = "DiagnosticDefault",
			["HINT"] = "DiagnosticDefault",
			["INFO"] = "DiagnosticDefault",
		},
	}
})

vim.o.updatetime = 250
-- vim.cmd [[autocmd! CursorHold,CursorHoldI * lua vim.diagnostic.open_float(nil, {focus=false, scope="cursor"})]]
-- vim.cmd [[autocmd! CursorHold,CursorHoldI * lua vim.diagnostic.open_float(nil, {focus=false})]]
vim.cmd [[autocmd! ColorScheme * highlight NormalFloat guibg=#4c4f69]]
vim.cmd [[autocmd! ColorScheme * highlight FloatBorder guifg=white guibg=#1f2335]]

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

-- To instead override globally
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

--- In .nvim.lua of your project paste in this
---
--- require'lspconfig'.clangd.setup{
--- 	on_attach = require("plugins.lsp-config").on_attach,
--- 	cpabilities = require("plugins.lsp-config").cpabilities,
--- 	lsp_flags = require("plugins.lsp-config").lsp_flags,
--- 	cmd = {vim.fn.expand('~/esp/esp-clang/bin/clangd')}
--- }