local null_ls = require("null-ls")

-- phpstan: use the project's own phpstan.neon when there is one, otherwise fall
-- back to the generic config in dotfiles.
local phpstan_global_config = vim.fn.expand("~/repos/dotfiles/php/phpstan-global.neon")

-- returns the config path to pass via -c, or nil when phpstan can discover a
-- local config itself (that also picks up its `includes:`, e.g. a baseline)
local function phpstan_config_arg(root)
	for _, name in ipairs({ "phpstan.neon", "phpstan.neon.dist" }) do
		if vim.uv.fs_stat(root .. "/" .. name) then
			return nil
		end
	end
	return phpstan_global_config
end

null_ls.setup({
	sources = {
		null_ls.builtins.formatting.phpcbf.with({
			command = "phpcbf", -- or full path if not in PATH
			extra_args = { "--standard=PSR12", "--standard=phpcs.xml" },
		}),
		null_ls.builtins.diagnostics.phpstan.with({
			-- prefer the project's own phpstan (extensions and baselines are
			-- version bound), fall back to the mason binary
			dynamic_command = function(params, done)
				local local_bin = params.root .. "/vendor/bin/phpstan"
				if vim.fn.executable(local_bin) == 1 then
					return done(local_bin)
				end
				return done("phpstan")
			end,
			args = function(params)
				local args = { "analyse", "--error-format", "json", "--no-progress" }
				local config = phpstan_config_arg(params.root)
				if config then
					vim.list_extend(args, { "-c", config })
				end
				table.insert(args, "$FILENAME")
				return args
			end,
			-- analyse the file on disk, not a copy in /tmp: phpstan needs the
			-- project's autoloader and its configured paths/scanDirectories
			method = null_ls.methods.DIAGNOSTICS_ON_SAVE,
			to_temp_file = false,
			timeout = 60000, -- a cold run easily exceeds null-ls' 5s default
			condition = function(utils)
				return utils.root_has_file({ "phpstan.neon", "phpstan.neon.dist" })
					or vim.uv.fs_stat(phpstan_global_config) ~= nil
			end,
		}),
		null_ls.builtins.diagnostics.phpcs.with({
			command = "phpcs", -- or "vendor/bin/phpcs" if local
			args = {
				"--standard=PSR12", -- or "phpcs.xml", "phpcs.xml.dist", etc.
				"-s",   -- show sniff codes
				"-q",   -- suppress warnings
				"--report=emacs",
				"--stdin-path", "$FILENAME",
				"-"
			},
			condition = function(utils)
				return utils.root_has_file({ "phpcs.xml", "phpcs.xml.dist" }) or true
			end,
		}),
		null_ls.builtins.formatting.phpcsfixer.with({
			command = "php-cs-fixer",
			-- no extra_args needed if config file is correctly named and in root
		}),
	},
})