/**
 * A generic Guide component, look at
 * `satellite-guidance.js` && `SatelliteGuide.jsx`
 * for example data / usage
 *
 * consume something like:

  <Guide
    hasIntroSlide
    // Use this as guide won't track viewstate
    isTopElement={viewState.topElement === "Guide"}
    terria={terria}
    guideKey={SATELLITE_GUIDE_KEY}
    guideData={SatelliteGuideData}
    showGuide={viewState.showSatelliteGuidance}
    setShowGuide={bool => {
      viewState.showSatelliteGuidance = bool;
      // If we're closing for any reason, set prompted to true
      if (!bool) {
        viewState.toggleFeaturePrompt("satelliteGuidance", true, true);
      }
    }}
  />

 *
 */
import { useState } from "react";
import PropTypes from "prop-types";
import classNames from "classnames";
import Styles from "./guide.scss";

// import createReactClass from "create-react-class";
// // import knockout from "terriajs-cesium/Source/ThirdParty/knockout";

import Spacing from "../../Styled/Spacing";
import Text from "../../Styled/Text";
import { useTranslation } from "react-i18next";
import Button from "../../Styled/Button";
import Box from "../../Styled/Box";
import {
  Category,
  GuideAction
} from "../../Core/AnalyticEvents/analyticEvents";

const GuideProgress = (props) => {
  // doesn't work for IE11
  // const countArray = Array.from(Array(props.maxStepCount).keys()).map(e => e++);

  const countArray = [];
  for (let i = 0; i < props.maxStepCount; i++) {
    countArray.push(i);
  }
  const currentStep = props.currentStep;
  return (
    <div className={Styles.indicatorWrapper}>
      {countArray.map((count) => {
        return (
          <div
            key={count}
            className={classNames(Styles.indicator, {
              [Styles.indicatorEnabled]: count < currentStep
            })}
          />
        );
      })}
    </div>
  );
};
GuideProgress.propTypes = {
  maxStepCount: PropTypes.number.isRequired,
  currentStep: PropTypes.number.isRequired
};

export const analyticsSetShowGuide = (
  isOpen,
  index,
  guideKey,
  terria,
  options = {
    setCalledFromInside: false
  }
) => {
  const action = options.setCalledFromInside
    ? isOpen
      ? GuideAction.openInModal
      : GuideAction.closeInModal
    : isOpen
      ? GuideAction.open
      : GuideAction.close;

  terria.analytics?.logEvent(
    Category.guide,
    action,
    `At index: ${index}, Guide: ${guideKey}`
  );
};

export const GuidePure = ({
  terria,
  guideKey,
  hasIntroSlide = false,
  guideData,
  setShowGuide
}) => {
  // Handle index locally for now (unless we do a "open guide at X point" in the future?)
  const [currentGuideIndex, setCurrentGuideIndex] = useState(0);

  const handlePrev = () => {
    const newIndex = currentGuideIndex - 1;
    terria.analytics?.logEvent(
      Category.guide,
      GuideAction.navigatePrev,
      `New index: ${newIndex}, Guide: ${guideKey}`
    );
    if (currentGuideIndex === 0) {
      handleSetShowGuide(false);
    } else {
      setCurrentGuideIndex(newIndex);
    }
  };

  const handleNext = () => {
    const newIndex = currentGuideIndex + 1;

    if (guideData[newIndex]) {
      terria.analytics?.logEvent(
        Category.guide,
        GuideAction.navigateNext,
        `New index: ${newIndex}, Guide: ${guideKey}`
      );

      setCurrentGuideIndex(newIndex);
    } else {
      handleSetShowGuide(false);
    }
  };

  const { t } = useTranslation();
  const handleSetShowGuide = (bool) => {
    analyticsSetShowGuide(bool, currentGuideIndex, guideKey, terria, {
      setCalledFromInside: true
    });
    setShowGuide(bool);
  };
  const currentGuide = guideData[currentGuideIndex] || {};
  const hidePrev = currentGuide.hidePrev || false;
  const hideNext = currentGuide.hideNext || false;
  const prevButtonText = currentGuide.prevText || t("general.prev");
  const nextButtonText = currentGuide.nextText || t("general.next");
  const maxStepCount = hasIntroSlide ? guideData.length - 1 : guideData.length;
  const currentStepCount = hasIntroSlide
    ? currentGuideIndex
    : currentGuideIndex + 1;

  return (
    <Box displayInlineBlock>
      <Box
        fullWidth
        styledHeight={"254px"}
        backgroundImage={currentGuide.imageSrc}
      />
      <Spacing bottom={5} />
      <Box paddedHorizontally={1} displayInlineBlock>
        <Text textDark bold subHeading>
          {currentGuide.title}
        </Text>
        <Spacing bottom={5} />
        <Box styledMinHeight={"100px"} fullWidth>
          <Text textDark medium>
            {currentGuide.body}
          </Text>
        </Box>
        <Spacing bottom={7} />
        <Box>
          <Box
            css={`
              margin-right: auto;
            `}
          >
            <GuideProgress
              currentStep={currentStepCount}
              maxStepCount={maxStepCount}
            />
          </Box>
          {!hidePrev && (
            <Button
              secondary
              onClick={() => handlePrev()}
              styledMinWidth={"94px"}
            >
              {prevButtonText}
            </Button>
          )}
          <Spacing right={2} />
          <Button
            primary
            onClick={() => handleNext()}
            styledMinWidth={"94px"}
            css={hideNext && `visibility: hidden;`}
          >
            {nextButtonText}
          </Button>
        </Box>
      </Box>
    </Box>
  );
};

GuidePure.propTypes = {
  terria: PropTypes.object.isRequired,
  guideKey: PropTypes.string.isRequired,
  guideData: PropTypes.array.isRequired,
  setShowGuide: PropTypes.func.isRequired,

  guideClassName: PropTypes.string,
  hasIntroSlide: PropTypes.bool
};

export default GuidePure;