cap153_nvim/lua/pack/configs/conform.lua

-- === 代码格式化 (conform.nvim) ===
if vim.g.vscode then return end

local P = {
	name = "conform.nvim",
	deps = {
		"mason.nvim",
		"mason-registry",
	},
}

-- 提取出统一的配置变量
local formatters_by_ft = {
	python = { "isort", "black" },
	rust = { "rust-analyzer", lsp_format = "fallback" },
	toml = { "templ" },
	html = { "djlint" },
	sh = { "shfmt" },
	zsh = { "shfmt" },
}


-- 辅助函数：从指定文件类型的配置中提取所有工具名称（去重）
local function get_ensure_installed_for_ft(ft, ft_table)
	local tools = {}
	local cfg = ft_table[ft]
	if type(cfg) == "table" then
		for _, item in ipairs(cfg) do
			if type(item) == "string" then
				tools[item] = true
			end
		end
	elseif type(cfg) == "string" then
		tools[cfg] = true
	end
	local list = {}
	for tool, _ in pairs(tools) do
		table.insert(list, tool)
	end
	return list
end

-- 快捷键纯懒加载：只在按下快捷键时激活
vim.keymap.set({ "n", "x" }, "<leader>f", function()
	PackUtils.load(P, function()
		require("conform").setup({ -- At a minimum, you will need to set up some formatters by filetype
			formatters_by_ft = formatters_by_ft
		})
	end)
	local registry = require("mason-registry")
	local ft = vim.bo.filetype
	local tools = get_ensure_installed_for_ft(ft, formatters_by_ft)
	for _, tool in ipairs(tools) do
		if not registry.is_installed(tool) then
			vim.notify("Installing formatter: " .. tool, vim.log.levels.INFO)
			registry.get_package(tool):install()
		end
	end
	require("conform").format({ async = true, lsp_fallback = true })
end, { desc = "格式化代码（检测安装缺失工具）" })