feat: add carousel to home page (#66)

app/components/Home/components/Section/components/SectionHero/components/Carousel/cards/constants.ts

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+import { CardProps } from "@databiosphere/findable-ui/lib/components/common/Card/card";
+import * as MDX from "../content";
+
+export const CAROUSEL_CARDS: Pick<CardProps, "text">[] = [
+  {
+    text: MDX.ShareUsageAndJoinAdvisoryPanel({}),
+  },
+  {
+    text: MDX.LearnToAnalyzeData({}),
+  },
+];

app/components/Home/components/Section/components/SectionHero/components/Carousel/carousel.styles.ts

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+import {
+  mediaDesktopSmallUp,
+  mediaTabletUp,
+} from "@databiosphere/findable-ui/lib/styles/common/mixins/breakpoints";
+import styled from "@emotion/styled";
+import { Bullets } from "../../../../../../../common/Bullets/bullets";
+import {
+  CAROUSEL_HEIGHT,
+  CAROUSEL_HEIGHT_SM,
+  MAX_CARD_WIDTH,
+} from "./common/constants";
+
+export const CarouselView = styled.div`
+  grid-column: 1 / -1;
+  max-width: ${MAX_CARD_WIDTH}px;
+  width: 100%;
+
+  ${mediaDesktopSmallUp} {
+    grid-column: 7 / -1;
+    grid-row: 1 / 3;
+    justify-self: flex-end;
+  }
+`;
+
+export const Carousel = styled.div`
+  cursor: grab;
+  height: ${CAROUSEL_HEIGHT_SM}px;
+  position: relative; /* Positions CardPositioner. */
+  user-select: none;
+
+  &:active {
+    cursor: grabbing;
+  }
+
+  ${mediaTabletUp} {
+    height: ${CAROUSEL_HEIGHT}px;
+  }
+
+  .MuiIconButton-root {
+    opacity: 0;
+    transition: opacity 150ms ease-in-out;
+  }
+
+  &:hover {
+    > .MuiIconButton-root {
+      opacity: 1;
+    }
+  }
+`;
+
+export const StyledBullets = styled(Bullets)`
+  bottom: 14px;
+  left: 50%;
+  position: absolute;
+  transform: translateX(-50%);
+  z-index: 100;
+`;

app/components/Home/components/Section/components/SectionHero/components/Carousel/carousel.tsx

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+import { SWIPE_ACTION } from "../../../../../../../../hooks/useSwipeInteraction/common/entities";
+import {
+  Carousel as CarouselCards,
+  CarouselView,
+  StyledBullets,
+} from "./carousel.styles";
+import { Arrow } from "./components/Arrow/arrow";
+import { Cards } from "./components/Cards/cards";
+import { useInteractiveCarousel } from "./hooks/useInteractiveCarousel";
+
+export const Carousel = (): JSX.Element => {
+  const {
+    activeIndex,
+    interactiveAction,
+    interactiveCards,
+    interactiveIndexes,
+    onSetActiveIndex,
+    onSetSwipeAction,
+  } = useInteractiveCarousel();
+  return (
+    <CarouselView>
+      <CarouselCards {...interactiveAction}>
+        <Arrow
+          onClick={(): void => onSetSwipeAction(SWIPE_ACTION.SWIPE_BACKWARD)}
+          swipeAction={SWIPE_ACTION.SWIPE_BACKWARD}
+        />
+        <Cards activeIndex={activeIndex} cards={interactiveCards} />
+        <Arrow
+          onClick={(): void => onSetSwipeAction(SWIPE_ACTION.SWIPE_FORWARD)}
+          swipeAction={SWIPE_ACTION.SWIPE_FORWARD}
+        />
+        <StyledBullets
+          activeBullet={activeIndex}
+          bullets={interactiveIndexes}
+          onBullet={onSetActiveIndex}
+        />
+      </CarouselCards>
+    </CarouselView>
+  );
+};

app/components/Home/components/Section/components/SectionHero/components/Carousel/common/constants.ts

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+export const CARD_OFFSET_Y = 8;
+export const CARD_SCALE_X = 40;
+export const MAX_CARD_HEIGHT = 216;
+export const MAX_CARD_HEIGHT_SM = 280;
+export const MAX_DECK_SIZE = 1; // Currently, deck size is only 1 additional card.
+export const MAX_CARD_WIDTH = 504;
+export const CAROUSEL_HEIGHT = MAX_CARD_HEIGHT + MAX_DECK_SIZE * CARD_OFFSET_Y;
+export const CAROUSEL_HEIGHT_SM =
+  MAX_CARD_HEIGHT_SM + MAX_DECK_SIZE * CARD_OFFSET_Y;
+export const TRANSITION_DELAY = 100;
+export const TRANSITION_DURATION = 100;
+export const ARROW_OFFSET_Y = (CARD_OFFSET_Y * MAX_DECK_SIZE) / 2;

app/components/Home/components/Section/components/SectionHero/components/Carousel/common/utils.ts

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+import { SWIPE_ACTION } from "../../../../../../../../../hooks/useSwipeInteraction/common/entities";
+import {
+  ARROW_OFFSET_Y,
+  CARD_OFFSET_Y,
+  CARD_SCALE_X,
+  MAX_CARD_WIDTH,
+  MAX_DECK_SIZE,
+  TRANSITION_DELAY,
+  TRANSITION_DURATION,
+} from "./constants";
+
+/**
+ * Returns the arrow's transform scaleX and translateY.
+ * @param swipeAction - Swipe action.
+ * @returns arrow's transform.
+ */
+export function getArrowTransform(swipeAction: SWIPE_ACTION): string {
+  return swipeAction === SWIPE_ACTION.SWIPE_FORWARD
+    ? `translate(24px, calc(${ARROW_OFFSET_Y}px - 50%)) scaleX(-1)`
+    : `translate(-24px, calc(${ARROW_OFFSET_Y}px - 50%))`;
+}
+
+/**
+ * Returns the carousel card's position in the deck.
+ * @param index - Card index.
+ * @param activeIndex - Active index.
+ * @param lastIndex - Last index.
+ * @returns card position (position zero to deck size).
+ */
+export function getCardPosition(
+  index: number,
+  activeIndex: number,
+  lastIndex: number
+): number {
+  const order = index - activeIndex;
+  if (order >= 0) return order;
+  // If the order is negative, stack the card to the end of the deck.
+  // Grab the last (positive) position in the deck and add the card position (index + 1).
+  return lastIndex - activeIndex + index + 1;
+}
+
+/**
+ * Returns the carousel card's x-axis scale.
+ * @param cardPosition - Card position.
+ * @returns card x-axis scale.
+ */
+export function getCardScaleX(cardPosition: number): string {
+  if (cardPosition === 0) return "scaleX(1)"; // The active card is scaled to 1.
+  return `scaleX(${
+    (MAX_CARD_WIDTH - cardPosition * CARD_SCALE_X) / MAX_CARD_WIDTH
+  })`;
+}
+
+/**
+ * Returns the carousel card's transform scaleX and translateY.
+ * @param cardPosition - Card position.
+ * @returns card transform.
+ */
+export function getCardTransform(cardPosition: number): string {
+  return `${getCardScaleX(cardPosition)} ${getCardTranslateY(cardPosition)}`;
+}
+
+/**
+ * Returns the carousel card's transition.
+ * @param cardPosition - Card position.
+ * @returns card transition.
+ */
+export function getCardTransition(cardPosition: number): string {
+  return `all ${TRANSITION_DURATION}ms ease-in-out ${
+    cardPosition * TRANSITION_DELAY
+  }ms, z-index 0ms ${TRANSITION_DELAY}ms`;
+}
+
+/**
+ * Returns the carousel card's y-axis offset.
+ * @param cardPosition - Card position.
+ * @returns y-axis offset.
+ */
+export function getCardTranslateY(cardPosition: number): string {
+  return `translateY(${(MAX_DECK_SIZE - cardPosition) * CARD_OFFSET_Y}px)`;
+}
+
+/**
+ * Returns the carousel card's z-index.
+ * @param cardPosition - Card position.
+ * @returns card z-index.
+ */
+export function getCardZIndex(cardPosition: number): number {
+  return MAX_DECK_SIZE - cardPosition;
+}

app/components/Home/components/Section/components/SectionHero/components/Carousel/components/Arrow/arrow.styles.ts

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+import { mediaTabletDown } from "@databiosphere/findable-ui/lib/styles/common/mixins/breakpoints";
+import {
+  inkMain,
+  smokeDark,
+  smokeLightest,
+  white,
+} from "@databiosphere/findable-ui/lib/styles/common/mixins/colors";
+import { black08 } from "@databiosphere/findable-ui/lib/theme/common/palette";
+import { css } from "@emotion/react";
+import styled from "@emotion/styled";
+import { IconButton as MIconButton } from "@mui/material";
+import {
+  SwipeAction,
+  SWIPE_ACTION,
+} from "../../../../../../../../../../hooks/useSwipeInteraction/common/entities";
+import { MAX_DECK_SIZE } from "../../common/constants";
+import { getArrowTransform } from "../../common/utils";
+
+interface Props {
+  swipeAction: SwipeAction;
+}
+
+export const IconButton = styled(MIconButton, {
+  shouldForwardProp: (props) => props !== "swipeAction",
+})<Props>`
+  & {
+    background-color: ${white};
+    border-radius: 50%;
+    box-shadow: inset 0 0 0 1px ${smokeDark}, 0 1px 0 0 ${black08};
+    color: ${inkMain};
+    position: absolute;
+    top: 50%;
+    transform: ${({ swipeAction }) => getArrowTransform(swipeAction)};
+    z-index: ${MAX_DECK_SIZE + 1};
+
+    &:hover {
+      background-color: ${smokeLightest};
+    }
+
+    &:active {
+      box-shadow: inset 0 0 0 1px ${smokeDark};
+    }
+
+    ${mediaTabletDown} {
+      display: none;
+    }
+  }
+
+  ${({ swipeAction }) =>
+    swipeAction === SWIPE_ACTION.SWIPE_BACKWARD &&
+    css`
+      left: 0;
+    `}
+
+  ${({ swipeAction }) =>
+    swipeAction === SWIPE_ACTION.SWIPE_FORWARD &&
+    css`
+      right: 0;
+    `}
+`;

app/components/Home/components/Section/components/SectionHero/components/Carousel/components/Arrow/arrow.tsx

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+import { SouthIcon } from "@databiosphere/findable-ui/lib/components/common/CustomIcon/components/SouthIcon/southIcon";
+import { SwipeAction } from "../../../../../../../../../../hooks/useSwipeInteraction/common/entities";
+import { IconButton } from "./arrow.styles";
+
+interface ArrowProps {
+  onClick: () => void;
+  swipeAction: SwipeAction;
+}
+
+export const Arrow = ({ onClick, swipeAction }: ArrowProps): JSX.Element => {
+  return (
+    <IconButton
+      color="secondary"
+      onClick={onClick}
+      size="large"
+      swipeAction={swipeAction}
+    >
+      <SouthIcon fontSize="small" />
+    </IconButton>
+  );
+};

app/components/Home/components/Section/components/SectionHero/components/Carousel/components/Cards/cards.styles.ts

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+import {
+  mediaTabletDown,
+  mediaTabletUp,
+} from "@databiosphere/findable-ui/lib/styles/common/mixins/breakpoints";
+import {
+  inkLight,
+  smokeMain,
+} from "@databiosphere/findable-ui/lib/styles/common/mixins/colors";
+import {
+  textBody500,
+  textBodyLarge500,
+  textBodySmall4002Lines,
+} from "@databiosphere/findable-ui/lib/styles/common/mixins/fonts";
+import { elevation01 } from "@databiosphere/findable-ui/lib/theme/common/shadows";
+import styled from "@emotion/styled";
+import { Card as MCard } from "@mui/material";
+import {
+  MAX_CARD_HEIGHT,
+  MAX_CARD_HEIGHT_SM,
+  MAX_CARD_WIDTH,
+} from "../../common/constants";
+import {
+  getCardTransform,
+  getCardTransition,
+  getCardZIndex,
+} from "../../common/utils";
+
+interface Props {
+  cardPosition: number;
+}
+
+export const CardPositioner = styled("div")<Props>`
+  display: grid;
+  height: 100%;
+  max-height: ${MAX_CARD_HEIGHT_SM}px;
+  max-width: ${MAX_CARD_WIDTH}px;
+  position: absolute;
+  transform: ${({ cardPosition }) => getCardTransform(cardPosition)};
+  transition: ${({ cardPosition }) => getCardTransition(cardPosition)};
+  width: 100%;
+  z-index: ${({ cardPosition }) => getCardZIndex(cardPosition)};
+
+  ${mediaTabletUp} {
+    max-height: ${MAX_CARD_HEIGHT}px;
+  }
+`;
+
+export const Card = styled(MCard)`
+  border: none;
+  box-shadow: ${elevation01}, inset 0 0 0 1px ${smokeMain};
+  display: flex;
+  height: 100%;
+  width: 100%;
+` as typeof MCard;
+
+export const CardSection = styled.div`
+  display: flex;
+  flex: 1;
+  flex-direction: column;
+  padding: 24px;
+`;
+
+export const CardContent = styled.div`
+  h1,
+  h2,
+  h3 {
+    ${textBodyLarge500};
+    margin: 0;
+  }
+
+  p {
+    ${textBodySmall4002Lines};
+    color: ${inkLight};
+    margin: 8px 0;
+
+    &:last-of-type {
+      margin-bottom: 0;
+    }
+  }
+
+  ${mediaTabletDown} {
+    -webkit-box-orient: vertical;
+    display: -webkit-box;
+    -webkit-line-clamp: 10;
+    overflow: hidden;
+  }
+`;
+
+export const CardActions = styled.div`
+  ${textBody500};
+  align-items: center;
+  display: flex;
+  gap: 16px;
+  margin-top: 16px;
+`;