class RedirectionConfig::Index < Lucky::Action
  include Lucky::ProtectFromForgery
  include Lucky::EnforceUnderscoredRoute
  include Lucky::SecureHeaders::DisableFLoC

  default_format :json

  get "/redirection_config" do
    data(
      data: config_json,
      content_type: "application/json",
      disposition: "attachment",
      filename: "redirector-config.json"
    )
  end

  private def config_json
    double_escaped_pattern = "^https?://(?:.*\\\\.)*(?<!(link\\\\.|cdn\\\\-images\\\\-\\\\d+\\\\.))medium\\\\.com(/.*)?$"
    <<-JSON
    {
      "createdBy": "Redirector v3.5.3",
      "createdAt": "2022-07-17T00:00:00.000Z",
      "redirects": [
        {
          "description": "Medium -> Scribe",
          "exampleUrl": "https://medium.com/@user/post-123456abcdef",
          "exampleResult": "https://#{app_domain}/@user/post-123456abcdef",
          "error": null,
          "includePattern": "#{double_escaped_pattern}",
          "excludePattern": "",
          "patternDesc": "",
          "redirectUrl": "https://#{app_domain}$2",
          "patternType": "R",
          "processMatches": "noProcessing",
          "disabled": false,
          "grouped": false,
          "appliesTo": [
            "main_frame",
            "sub_frame",
            "xmlhttprequest",
            "history",
            "other"
          ]
        }
      ]
    }
    JSON
  end

  private def app_domain
    URI.parse(Home::Index.url).normalize
      .to_s
      .sub(/\/$/, "")
      .sub(/^https?:\/\//, "")
  end
end