nvim-kickstart/lua/custom/lspconfig.lua

-- import lspconfig plugin safely
local lspconfig_status, lspconfig = pcall(require, "lspconfig")
if not lspconfig_status then
	return
end

-- import cmp-nvim-lsp plugin safely
local cmp_nvim_lsp_status, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
if not cmp_nvim_lsp_status then
	return
end

local keymap = vim.keymap -- for conciseness

---------- border >------------------------------
local _border = "single"
require('lspconfig.ui.windows').default_options = {
	border = _border
}
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
	}
)

vim.diagnostic.config {
	float = { border = _border }
}
---------- </border ------------------------------

-- enable keybinds only for when lsp server available
local on_attach = function(_, bufnr)
	-- keybind options
	local opts = { noremap = true, silent = true, buffer = bufnr }

	keymap.set("n", "g0", "<cmd>lua vim.lsp.buf.document_symbol()<CR>", opts)
	-- keymap.set("n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
	keymap.set("n", "gD", "<cmd>lua vim.lsp.buf.declaration()<CR>", opts) -- got to declaration
	keymap.set("n", "gd", "<cmd>lua vim.lsp.buf.definition()<CR>", opts)  -- see definition and make edits in window
	keymap.set("n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts) -- go to implementation
	keymap.set("n", "<leader>l", "<cmd>lua vim.lsp.buf.format()<CR>", opts) -- format code
	keymap.set("n", "<leader>rn", "<cmd>lua vim.lsp.buf.rename()<CR>", opts) -- format code
	-- keymap.set("n", "<leader>ca", "<cmd>lua vim.lsp.buf.code_action()<CR>", opts) -- see available code actions
	keymap.set("n", "<leader>ed", "<cmd>Telescope diagnostics<CR>", opts) -- jump to previous diagnostic in buffer
	-- keymap.set("n", "K", "<cmd>lua vim.lsp.buf.hover()<CR>", opts) -- show documentation for what is under cursor
	keymap.set(
		"n",
		"<leader>cbf",
		":!phpcbf -w --standard=PSR12 %<CR>",
		{ noremap = true, silent = false, buffer = bufnr }
	)

	keymap.set("n", "<leader>o", "<cmd>Lspsaga outline<CR>", opts) -- see outline on right hand side


	-- LSP Saga
	keymap.set("n", "gsd", "<cmd>Lspsaga peek_definition<CR>", opts)    -- see definition and make edits in window
	keymap.set("n", "gr", "<cmd>Lspsaga finder<CR>", opts)              -- see definition and make edits in window
	keymap.set("n", "<leader>rn", "<cmd>Lspsaga rename<CR>", opts)      -- smart rename
	keymap.set("n", "<leader>ca", "<cmd>Lspsaga code_action<CR>", opts) -- see available code actions
	keymap.set("n", "<leader>en", "<cmd>Lspsaga diagnostic_jump_next<CR>") -- jump to next diagnostic in buffer
	keymap.set("n", "K", "<cmd>Lspsaga hover_doc<CR>", opts)            -- show documentation for what is under cursor
	keymap.set("n", "<leader>eb", "<cmd>Lspsaga diagnostic_jump_prev<CR>") -- jump to previous diagnostic in buffer
	keymap.set("n", "ge", "<cmd>Lspsaga show_line_diagnostics<CR>", opts) -- show  diagnostics for line
	keymap.set("n", "<leader>d", "<cmd>Lspsaga show_buf_diagnostics<CR>")
	keymap.set("n", "<a-cr>", "<cmd>Lspsaga code_action<CR>", opts)
	keymap.set("n", "gj", "]m", opts) -- jump to next method
	keymap.set("n", "gk", "[m", opts) -- jump to previous method
end

-- used to enable autocompletion (assign to every lsp server config)
local capabilities = cmp_nvim_lsp.default_capabilities()

-- Change the Diagnostic symbols in the sign column (gutter)
-- (not in youtube nvim video)
local signs = { Error = " ", Warn = " ", Hint = "󰋽 ", Info = " " }
for type, icon in pairs(signs) do
	local hl = "DiagnosticSign" .. type
	vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = "" })
end

local lsp_flags = {
	-- This is the default in Nvim 0.7+
	debounce_text_changes = 150,
}

lspconfig["bashls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "sh", "bin" },
})

-- XML LSP
lspconfig["lemminx"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "xml" },
})

-- yaml LSP
lspconfig["yamlls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "yaml", "yml" },
})
-- json LSP
lspconfig["jsonls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "json" },
})

lspconfig["pyright"].setup({
	on_attach = on_attach,
	flags = lsp_flags,
	filetypes = { "py" },
})

-- configure html server
lspconfig["html"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "html" },
})

-- configure css server
lspconfig["cssls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "html", "typescriptreact", "javascriptreact", "css", "sass", "scss", "less", "svelte" },
})

-- configure tailwindcss server
lspconfig["tailwindcss"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "html", "typescriptreact", "javascriptreact", "css", "sass", "scss", "less", "svelte" },
})

-- configure emmet language server
lspconfig["emmet_ls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "html", "typescriptreact", "javascriptreact", "css", "sass", "scss", "less", "svelte" },
})

lspconfig["eslint"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "html", "typescriptreact", "javascriptreact", "css", "sass", "scss", "less", "svelte" },
})

-- rust
lspconfig["rust_analyzer"].setup({
	on_attach = on_attach,
	capabilities = capabilities,
	flags = lsp_flags,
	-- Server-specific settings...
	settings = {
		["rust-analyzer"] = {
			-- enable clippy on save
			checkOnSave = {
				command = "clippy",
			},
		},
	},
})

lspconfig["yamlls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "yml", "yaml" },
})

-- -- configure lua server (with special settings)
lspconfig["lua_ls"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	settings = { -- custom settings for lua
		Lua = {
			-- make the language server recognize "vim" global
			diagnostics = {
				globals = { "vim" },
			},
			workspace = {
				-- make language server aware of runtime files
				library = {
					[vim.fn.expand("$VIMRUNTIME/lua")] = true,
					[vim.fn.stdpath("config") .. "/lua"] = true,
				},
			},
		},
	},
	filetypes = { "lua" },
})

lspconfig["phpactor"].setup({
	on_attach = on_attach,
	capabilities = capabilities,
	init_options = {
		["language_server_phpstan.enabled"] = true,
		["language_server_psalm.enabled"] = false,
	},
	filetypes = { "php" },
})

lspconfig["intelephense"].setup({
	capabilities = capabilities,
	on_attach = on_attach,
	filetypes = { "php" },
})

lspconfig["slint_lsp"].setup({
	on_attach = on_attach,
	capabilities = capabilities,
	filetypes = { "slint" },
})