local uv = vim.loop

local M = {}

-- A naive lint approach: if a file ends with .lua, run "luacheck" if available.
-- If .go, run "go build" or "go vet", etc. This is just an example; adapt to your needs.
-- Return nil if lint tool can't be determined or is not installed.
local function guess_linter_command(path)
  if path:match("%.lua$") then
    return "luacheck " .. vim.fn.shellescape(path)
  elseif path:match("%.go$") then
    -- We'll just do a quick "go build" or "go vet"
    return "go vet " .. vim.fn.fnamemodify(path, ":h")
  end
  return nil
end

-- Executes the linter command and returns the output or an error if it fails to run.
local function run_command(cmd)
  local handle = io.popen(cmd)
  if not handle then
    return nil, ("Failed to run: %s"):format(cmd)
  end
  local output = handle:read("*a") or ""
  handle:close()
  return output, nil
end

function M.lint_file(path)
  local lint_cmd = guess_linter_command(path)
  if not lint_cmd then
    return nil, "No known lint command for file: " .. path
  end

  local output, err = run_command(lint_cmd)
  if not output then
    return nil, err or ("Failed to lint: " .. path)
  end
  return output, nil
end

return M