---
import type { ComponentProps } from "astro/types";
import type CopyrightNotice from "@components/templates/CopyrightNotice.astro";
import { listYearsWithRanges } from "@utils/datetime";
interface Props extends ComponentProps<typeof CopyrightNotice> {}

let { license, title, holders, years } = Astro.props;

if (typeof license !== "string") throw new Error();

const publicdomain = license === "CC0";
const sa = /SA/.test(license);
const nd = /ND/.test(license);
const nc = /NC/.test(license);
const licenseURL = `https://creativecommons.org/licenses/${
  license.slice(3).toLowerCase()
}/4.0/`;

const firstYear = Math.min(...years);
const lastYears = years.sort((a, b) => a - b).slice(1);
---

<footer itemprop="copyrightNotice">
  {
    publicdomain ? (
      <p>
        <small>
          <a href={Astro.url}>{title}</a> by {
            holders.map(({ name, url }) => {
              if (name === undefined) return undefined;

              const website = url?.[0];

              return (
              <span
                itemprop="copyrightHolder"
                itemscope
                itemtype="https://schema.org/Person"
              >{
                website !== undefined ? (
                  <a
                    itemprop="url"
                    rel="author external noreferrer"
                    target="_blank"
                    href={website}
                    content={website}
                  ><span itemprop="name">{name}</span></a>
                ) : <span itemprop="name">{name}</span>
              }</span>
            );
            })
          } is marked <a
            itemprop="license"
            rel="license noreferrer"
            target="_blank"
            href="https://creativecommons.org/publicdomain/zero/1.0/"
            content="https://creativecommons.org/publicdomain/zero/1.0/"
          >CC0 1.0</a>
          <img
            alt=""
            src="https://mirrors.creativecommons.org/presskit/icons/cc.svg"
            style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
          >
          <img
            alt=""
            src="https://mirrors.creativecommons.org/presskit/icons/zero.svg"
            style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
          >
        </small>
      </p>
    ) : (
      <p>
        <small>
          <a href={Astro.url}>{title}</a> © <span itemprop="copyrightYear">{
            firstYear
          }</span>, {
            listYearsWithRanges(lastYears, {
              list: { type: "unit", style: "narrow" },
              locale: "en",
            }).replace(/^\d+/, "")
          } by {
            holders.map(({ name, url }) => {
              if (name === undefined) return undefined;

              const website = url?.[0];

              return (
              <span
                itemprop="copyrightHolder"
                itemscope
                itemtype="https://schema.org/Person"
              >{
                website !== undefined ? (
                  <a
                    itemprop="url"
                    rel="author external noreferrer"
                    target="_blank"
                    href={website}
                    content={website}
                  ><span itemprop="name">{name}</span></a>
                ) : <span itemprop="name">{name}</span>
              }</span>
            );
            })
          } is licensed under <a
            itemprop="license"
            rel="license noreferrer"
            target="_blank"
            href={licenseURL}
            content={licenseURL}
          >{license.replace("CC-", "CC ")} 4.0</a>
          <img
            alt=""
            src="https://mirrors.creativecommons.org/presskit/icons/cc.svg"
            style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
          >
          <img
            alt=""
            src="https://mirrors.creativecommons.org/presskit/icons/by.svg"
            style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
          >
          {
            nc && (
              <img
                alt=""
                src="https://mirrors.creativecommons.org/presskit/icons/nc.svg"
                style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
              >
            )
          }
          {
            sa && (
              <>{" "}<img
                  alt=""
                  src="https://mirrors.creativecommons.org/presskit/icons/sa.svg"
                  style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
                ></>
            )
          }
          {
            nd && (
              <>{" "}<img
                  alt=""
                  src="https://mirrors.creativecommons.org/presskit/icons/nd.svg"
                  style="max-width: 1em; max-height: 1em; margin-left: 0.2em"
                ></>
            )
          }
        </small>
      </p>
    )
  }
</footer>