-- Get all LSP servers to configure
local function get_all_servers()
	local servers = {}
	local commons = require("commons")

	-- Use configured LSP servers from commons
	for _, server in ipairs(commons.lsp_servers.code) do
		servers[server] = true
	end

	-- Auto-detect LSP servers installed by Mason using mason-lspconfig
	local ok, mason_lspconfig = pcall(require, "mason-lspconfig")
	if ok then
		local installed_servers = mason_lspconfig.get_installed_servers()
		for _, server in ipairs(installed_servers) do
			servers[server] = true
		end
	end

	return servers
end

-- Configure a single LSP server
local function configure_server(server, lspconfig, capabilities)
	-- Only attempt to load .lua files from lsp folder
	local lsp_config_path = "lsp." .. server
	local lua_file_path = vim.fn.stdpath("config") .. "/lua/lsp/" .. server .. ".lua"

	-- Check if the .lua file exists
	if vim.fn.filereadable(lua_file_path) == 1 then
		local ok, settings = pcall(require, lsp_config_path)
		if ok then
			if lspconfig then
				settings.capabilities = capabilities
				lspconfig[server].setup(settings)
			else
				vim.lsp.config(server, settings)
				vim.lsp.enable(server)
			end
		else
			-- Fallback to default config if .lua file exists but fails to load
			if lspconfig then
				lspconfig[server].setup({ capabilities = capabilities })
			else
				vim.lsp.config(server, {})
				vim.lsp.enable(server)
			end
		end
	else
		if lspconfig then
			lspconfig[server].setup({ capabilities = capabilities })
		else
			vim.lsp.config(server, {})
			vim.lsp.enable(server)
		end
	end
end

if require("commons").tools.is_version_gte_0_11() then
	-- Neovim 0.11+ native LSP configuration
	vim.lsp.config("*", {
		capabilities = require("blink.cmp").get_lsp_capabilities(),
		root_markers = { ".git" },
	})

	-- Configure all servers
	for server in pairs(get_all_servers()) do
		configure_server(server)
	end

	vim.diagnostic.config({
		update_in_insert = true,
		severity_sort = true,
		float = { source = true },
		virtual_text = true,
	})
else
	-- Legacy nvim-lspconfig setup for Neovim < 0.11
	local lspconfig = require("lspconfig")
	local capabilities = require("blink.cmp").get_lsp_capabilities()

	-- Configure all servers
	for server in pairs(get_all_servers()) do
		configure_server(server, lspconfig, capabilities)
	end
end