import React, { ReactNode, ComponentType } from "react";
import styles from "./OrganizedContent.module.css";

export interface LinkProps {
  children: string | ReactNode | (string | ReactNode)[];
  url: string;
}

type Link = ComponentType<LinkProps>;

interface Heading {
  name: string;
  url: string;
  content: ReactNode;
}

interface Props {
  headings: Heading[];
  currentIndex: number;
  link: Link;
  children: ReactNode;
}

export const OrganizedContent: React.FC<Props> = ({
  headings,
  currentIndex,
  children,
  link: Link,
}) => {
  const isReadAll = headings[currentIndex].name === "Read All";
  const prevHeading =
    currentIndex > 0 && headings[currentIndex - 1].name !== "Read All"
      ? headings[currentIndex - 1]
      : undefined;
  const nextHeading =
    currentIndex < headings.length - 1 && !isReadAll
      ? headings[currentIndex + 1]
      : undefined;

  return (
    <div className={styles.organizedContent}>
      <div className={styles.nav}>
        {headings.map((heading, index) => (
          <div
            className={index === currentIndex ? styles.selectedHeadingArea : ""}
            key={heading.url}
          >
            <div
              className={
                styles.navOption +
                " " +
                (index === currentIndex
                  ? styles.selectedHeading
                  : heading.name === "Read All"
                  ? styles.readAll
                  : "")
              }
            >
              <Link url={heading.url}>{heading.name}</Link>
            </div>
            <div className={styles.divider}></div>
          </div>
        ))}
      </div>

      <div>
        {!isReadAll ? (
          <h2 className={styles.contentHeading}>
            {headings[currentIndex].name}
          </h2>
        ) : (
          <div>
            {headings
              .filter(
                (heading: { name: string }) => heading.name !== "Read All"
              )
              .map((heading) => (
                <div key={heading.url}>
                  <h2 className={styles.contentHeading}>{heading.name}</h2>
                  {heading.content}
                </div>
              ))}
          </div>
        )}
        {children}
        <div className={styles.footer}>
          {prevHeading && (
            <div className={styles.clickable}>
              <Link url={prevHeading.url}>
                <div className={styles.footerSection}>
                  <svg
                    xmlns="http://www.w3.org/2000/svg"
                    width="14"
                    height="9"
                    viewBox="0 0 14 9"
                    className={styles.arrow + " " + styles.prevArrow}
                  >
                    <path d="M6.24407 8.12713C6.64284 8.58759 7.35716 8.58759 7.75593 8.12713L13.3613 1.65465C13.9221 1.00701 13.4621 0 12.6053 0H1.39467C0.537918 0 0.0778675 1.00701 0.638743 1.65465L6.24407 8.12713Z" />
                  </svg>
                  <div>
                    <div className={styles.prevNext}>Previous</div>
                    <div className={styles.arrowHeading}>
                      {prevHeading.name}
                    </div>
                  </div>
                </div>
              </Link>
            </div>
          )}
          <div></div>
          {nextHeading && (
            <div className={styles.clickable}>
              <Link url={nextHeading.url}>
                <div className={styles.footerSection}>
                  <div>
                    <div className={styles.prevNext + " " + styles.nextText}>
                      Next
                    </div>
                    <div className={styles.arrowHeading}>
                      {nextHeading.name}
                    </div>
                  </div>
                  <svg
                    xmlns="http://www.w3.org/2000/svg"
                    width="14"
                    height="9"
                    viewBox="0 0 14 9"
                    className={styles.arrow + " " + styles.nextArrow}
                  >
                    <path d="M6.24407 8.12713C6.64284 8.58759 7.35716 8.58759 7.75593 8.12713L13.3613 1.65465C13.9221 1.00701 13.4621 0 12.6053 0H1.39467C0.537918 0 0.0778675 1.00701 0.638743 1.65465L6.24407 8.12713Z" />
                  </svg>
                </div>
              </Link>
            </div>
          )}
        </div>
      </div>
    </div>
  );
};
