import { promises as fs } from "fs";
import path from "path";

import yaml from "js-yaml";

import checkAndCopyConfig, { CONF_DIR, substituteEnvironmentVars } from "utils/config/config";

export async function widgetsFromConfig() {
  checkAndCopyConfig("widgets.yaml");

  const widgetsYaml = path.join(CONF_DIR, "widgets.yaml");
  const rawFileContents = await fs.readFile(widgetsYaml, "utf8");
  const fileContents = substituteEnvironmentVars(rawFileContents);
  const widgets = yaml.load(fileContents);

  if (!widgets) return [];

  // map easy to write YAML objects into easy to consume JS arrays
  const widgetsArray = widgets.map((group, index) => ({
    type: Object.keys(group)[0],
    options: {
      index,
      ...group[Object.keys(group)[0]],
    },
  }));
  return widgetsArray;
}

export async function cleanWidgetGroups(widgets) {
  return widgets.map((widget, index) => {
    const sanitizedOptions = widget.options;
    const optionKeys = Object.keys(sanitizedOptions);

    // delete private options from the sanitized options
    ["username", "password", "key"].forEach((pO) => {
      if (optionKeys.includes(pO)) {
        delete sanitizedOptions[pO];
      }
    });

    // delete url from the sanitized options if the widget is not a search or glances widgeth
    if (widget.type !== "search" && widget.type !== "glances" && optionKeys.includes("url")) {
      delete sanitizedOptions.url;
    }

    return {
      type: widget.type,
      options: {
        index,
        ...sanitizedOptions,
      },
    };
  });
}

export async function getPrivateWidgetOptions(type, widgetIndex) {
  const widgets = await widgetsFromConfig();

  const privateOptions = widgets.map((widget) => {
    const { index, url, username, password, key } = widget.options;

    return {
      type: widget.type,
      options: {
        index,
        url,
        username,
        password,
        key,
      },
    };
  });

  return type !== undefined && widgetIndex !== undefined
    ? privateOptions.find((o) => o.type === type && o.options.index === parseInt(widgetIndex, 10))?.options
    : privateOptions;
}