import { renderStatsCard } from "../src/cards/stats-card.js";
import { blacklist } from "../src/common/blacklist.js";
import {
  clampValue,
  CONSTANTS,
  parseArray,
  parseBoolean,
  renderError,
} from "../src/common/utils.js";
import { fetchStats } from "../src/fetchers/stats-fetcher.js";
import { validateQueryStringParams } from "../src/common/validate.js";

const QUERYSTRING_PARAMS_DATA_TYPE_MAP = new Map([
  ["username", "string"],
  ["hide", "enum-array"],
  ["hide_title", "boolean"],
  ["hide_border", "boolean"],
  ["card_width", "number"],
  ["hide_rank", "boolean"],
  ["show_icons", "boolean"],
  ["include_all_commits", "boolean"],
  ["line_height", "number"],
  ["title_color", "string"],
  ["ring_color", "string"],
  ["icon_color", "string"],
  ["text_color", "string"],
  ["text_bold", "boolean"],
  ["bg_color", "string"],
  ["theme", "enum"],
  ["cache_seconds", "number"],
  ["exclude_repo", "array"],
  ["custom_title", "string"],
  ["locale", "enum"],
  ["disable_animations", "boolean"],
  ["border_radius", "number"],
  ["border_color", "string"],
  ["number_format", "enum"],
  ["rank_icon", "enum"],
  ["show", "enum-array"],
]);

export default async (req, res) => {
  const {
    username,
    hide,
    hide_title,
    hide_border,
    card_width,
    hide_rank,
    show_icons,
    include_all_commits,
    line_height,
    title_color,
    ring_color,
    icon_color,
    text_color,
    text_bold,
    bg_color,
    theme,
    cache_seconds,
    exclude_repo,
    custom_title,
    locale,
    disable_animations,
    border_radius,
    number_format,
    border_color,
    rank_icon,
    show,
  } = req.query;
  res.setHeader("Content-Type", "image/svg+xml");

  if (blacklist.includes(username)) {
    return res.send(renderError("Something went wrong"));
  }

  try {
    validateQueryStringParams(req.query, QUERYSTRING_PARAMS_DATA_TYPE_MAP);

    const showStats = parseArray(show);
    const stats = await fetchStats(
      username,
      parseBoolean(include_all_commits),
      parseArray(exclude_repo),
      showStats.includes("prs_merged") ||
        showStats.includes("prs_merged_percentage"),
      showStats.includes("discussions_started"),
      showStats.includes("discussions_answered"),
    );

    let cacheSeconds = clampValue(
      parseInt(cache_seconds || CONSTANTS.CARD_CACHE_SECONDS, 10),
      CONSTANTS.SIX_HOURS,
      CONSTANTS.ONE_DAY,
    );
    cacheSeconds = process.env.CACHE_SECONDS
      ? parseInt(process.env.CACHE_SECONDS, 10) || cacheSeconds
      : cacheSeconds;

    res.setHeader(
      "Cache-Control",
      `max-age=${
        cacheSeconds / 2
      }, s-maxage=${cacheSeconds}, stale-while-revalidate=${CONSTANTS.ONE_DAY}`,
    );

    return res.send(
      renderStatsCard(stats, {
        hide: parseArray(hide),
        show_icons: parseBoolean(show_icons),
        hide_title: parseBoolean(hide_title),
        hide_border: parseBoolean(hide_border),
        card_width: parseInt(card_width, 10),
        hide_rank: parseBoolean(hide_rank),
        include_all_commits: parseBoolean(include_all_commits),
        line_height,
        title_color,
        ring_color,
        icon_color,
        text_color,
        text_bold: parseBoolean(text_bold),
        bg_color,
        theme,
        custom_title,
        border_radius,
        border_color,
        number_format,
        locale: locale ? locale.toLowerCase() : null,
        disable_animations: parseBoolean(disable_animations),
        rank_icon,
        show: showStats,
      }),
    );
  } catch (err) {
    res.setHeader(
      "Cache-Control",
      `max-age=${CONSTANTS.ERROR_CACHE_SECONDS / 2}, s-maxage=${
        CONSTANTS.ERROR_CACHE_SECONDS
      }, stale-while-revalidate=${CONSTANTS.ONE_DAY}`,
    ); // Use lower cache period for errors.
    return res.send(renderError(err.message, err.secondaryMessage));
  }
};