local config = require('muwiki.config')
local paths = require('muwiki.paths')

local M = {}

function M.open(url)
  if type(url) ~= 'string' then
    vim.notify('Invalid URL type', vim.log.levels.ERROR)
    return false
  end

  local valid, err = paths.validate_url_scheme(url)
  if not valid then
    vim.notify(err, vim.log.levels.ERROR)
    return false
  end

  vim.system({ 'xdg-open', url }, { detach = true })
  return true
end

function M.execute(handler, url)
  if type(handler.cmd) == 'function' then
    handler.cmd(url)
  else
    vim.system({ handler.cmd, url }, { detach = true })
  end
end

function M.matches(handler, url)
  local pattern = handler.pattern

  if pattern == nil then
    return true
  end

  if type(pattern) == 'string' then
    return url:match(pattern) ~= nil
  end

  for _, p in ipairs(pattern) do
    if url:match(p) then
      return true
    end
  end
  return false
end

function M.get_matching(url)
  local matching = {}
  for _, handler in ipairs(config.options.external_handlers) do
    if M.matches(handler, url) then
      table.insert(matching, handler)
    end
  end
  return matching
end

return M