import FormData from "form-data";

import { GotenbergUtils } from "../../common/gotenberg.utils";
import { PageProperties } from "../interfaces/converter.types";

export class ConverterUtils {
  public static injectPageProperties(
    data: FormData,
    pageProperties: PageProperties
  ): void {
    if (pageProperties.size) {
      GotenbergUtils.assert(
        pageProperties.size.width >= 1.0 && pageProperties.size.height >= 1.5,
        "size is smaller than the minimum printing requirements (i.e. 1.0 x 1.5 in)"
      );

      data.append("paperWidth", pageProperties.size.width);
      data.append("paperHeight", pageProperties.size.height);
    }

    if (pageProperties.margins) {
      GotenbergUtils.assert(
        pageProperties.margins.top >= 0 &&
          pageProperties.margins.bottom >= 0 &&
          pageProperties.margins.left >= 0 &&
          pageProperties.margins.left >= 0,
        "negative margins are not allowed"
      );

      data.append("marginTop", pageProperties.margins.top);
      data.append("marginBottom", pageProperties.margins.bottom);
      data.append("marginLeft", pageProperties.margins.left);
      data.append("marginRight", pageProperties.margins.right);
    }

    if (pageProperties.preferCssPageSize) {
      data.append(
        "preferCssPageSize",
        String(pageProperties.preferCssPageSize)
      );
    }

    if (pageProperties.printBackground) {
      data.append("printBackground", String(pageProperties.printBackground));
    }

    if (pageProperties.landscape) {
      data.append("landscape", String(pageProperties.landscape));
    }

    if (pageProperties.scale) {
      GotenbergUtils.assert(
        pageProperties.scale >= 0.1 && pageProperties.scale <= 2.0,
        "scale is outside of [0.1 - 2] range"
      );

      data.append("scale", pageProperties.scale);
    }

    if (pageProperties.nativePageRanges) {
      GotenbergUtils.assert(
        pageProperties.nativePageRanges.from > 0 &&
          pageProperties.nativePageRanges.to > 0 &&
          pageProperties.nativePageRanges.to >=
            pageProperties.nativePageRanges.from,
        "page ranges syntax error"
      );

      data.append(
        "nativePageRanges",
        `${pageProperties.nativePageRanges.from}-${pageProperties.nativePageRanges.to}`
      );
    }
  }
}