import * as React from "react";
import * as R from "ramda";
import { graphql, Link } from "gatsby";
import { navigate } from "gatsby";
import { Helmet } from "react-helmet";
import { Picker, Item } from "@adobe/react-spectrum";

import MasonryGallery from "../../components/MasonryGallery";
import KeywordsPicker from "../../components/KeywordsPicker";
import { getGalleryPageUrl } from "../../utils";

const SORT_KEYS = {
  hue: ["fields", "imageMeta", "vibrantHue"],
  rating: ["fields", "imageMeta", "meta", "Rating"],
  hue_debug: ["fields", "imageMeta", "dominantHue", 0],
  date: [],
};

const GalleryPage = ({ data }) => {
  const hash =
    typeof window !== "undefined" ? window.location.hash.replace("#", "") : "";

  const [hashCleared, setHashCleared] = React.useState(false); 
  //     ^ used just to force a re-render with the cleared hash value (I know, it's a smell for sure)
  const [filterKeyword, _setKeyword] = React.useState(null);
  const [sortKey, _setSortKey] = React.useState("rating");
  const showDebug =
    typeof window !== "undefined" &&
    window.location.search.includes("debug=true");

  const setKeyword = React.useCallback(
    (newKeyword) => {
      try {
        window.plausible("Filter Keyword", {
          props: { keyword: newKeyword },
        });
      } catch (e) {
        // do nothing
      }
      _setKeyword(newKeyword);
      window.history.replaceState(
        null,
        "",
        getGalleryPageUrl({ keyword: newKeyword, sortKey }, hash)
      );
    },
    [_setKeyword, sortKey, hash]
  );

  const setSortKey = React.useCallback(
    (newSortKey) => {
      try {
        window.plausible("Sort Gallery", {
          props: { key: newSortKey },
        });
      } catch (e) {
        // do nothing
      }
      _setSortKey(newSortKey);
      window.history.replaceState(
        null,
        "",
        getGalleryPageUrl({ sortKey: newSortKey, keyword: filterKeyword }, hash)
      );
    },
    [_setSortKey, filterKeyword, hash]
  );

  const removeHash = React.useCallback(() => {
    console.log('rh')
    const url = new URL(
      typeof window !== "undefined"
        ? window.location.href.toString()
        : "https://chuckdries.com/photogallery/"
    );

    url.hash = "";
    window.history.replaceState(null, "", url.href.toString());
    window.removeEventListener("wheel", removeHash);
    setHashCleared(true);
  }, []);

  const scrollIntoView = React.useCallback(() => {
    if (!hash) {
      return;
    }
    const el = document.getElementById(hash);
    if (!el) {
      return;
    }
    el.scrollIntoView({
      block: "center",
    });
    window.addEventListener("wheel", removeHash);
  }, [hash, removeHash]);

  React.useEffect(() => {
    const url = new URL(window.location.toString());

    const sortKeyFromUrl = url.searchParams.get("sort");
    if (sortKeyFromUrl) {
      _setSortKey(sortKeyFromUrl, false);
    }

    const filterKeyFromUrl = url.searchParams.get("filter");
    if (filterKeyFromUrl) {
      _setKeyword(filterKeyFromUrl, false);
    }

    // hacky but it works for now
    setTimeout(() => {
      // don't scroll into view if user got here with back button
      scrollIntoView();
    }, 100);
  }, [setSortKey, setKeyword, scrollIntoView]);

  const images = React.useMemo(
    () =>
      R.pipe(
        sortKey === "date"
          ? R.sort((node1, node2) => {
              const date1 = new Date(
                R.path(["fields", "imageMeta", "dateTaken"], node1)
              );
              const date2 = new Date(
                R.path(["fields", "imageMeta", "dateTaken"], node2)
              );
              return -1 * (date1.getTime() - date2.getTime());
            })
          : R.sort(R.descend(R.path(SORT_KEYS[sortKey]))),
        filterKeyword
          ? R.filter((image) =>
              R.includes(
                filterKeyword,
                R.path(["fields", "imageMeta", "meta", "Keywords"], image)
              )
            )
          : R.identity
      )(data.allFile.nodes),
    [data, sortKey, filterKeyword]
  );

  return (
    <>
      <Helmet>
        <title>Photo Gallery | Chuck Dries</title>
        <body className="bg-black text-white" />
      </Helmet>
      <div className="sm:sticky top-0 z-10 bg-black">
        <nav className="mt-1 ml-1 text-lg mb-4">
          <button
            className="hover:underline text-vibrant-light hover:text-muted-light arrow-left-before  mr-1"
            onClick={() => navigate(-1)}
            type="button"
          >
            back
          </button>
          <Link
            className="hover:underline text-vibrant-light hover:text-muted-light mx-1"
            to="/"
          >
            home
          </Link>
          <Link
            className="hover:underline text-vibrant-light hover:text-muted-light mx-1"
            to="/photogallery/"
          >
            gallery
          </Link>
        </nav>
        <div className="flex flex-col md:flex-row md:items-end">
          <h1 className="text-5xl mt-0 ml-5 mr-5 font-serif font-black z-10 flex-auto">
            Photo Gallery
          </h1>
          <KeywordsPicker
            keywords={[
              "night",
              "coast",
              "city",
              "landscape",
              "flowers",
              "product",
              "waterfall",
              "fireworks",
              "panoramic",
              "Portland Japanese Garden",
              // "sunset",
            ]}
            onChange={setKeyword}
            value={filterKeyword}
          />
          <div className="m-2">
            <Picker
              label="Sort by..."
              onSelectionChange={setSortKey}
              selectedKey={sortKey}
            >
              <Item key="rating">Default</Item>
              <Item key="date">Date</Item>
              <Item key="hue">Hue</Item>
              {showDebug && <Item key="hue_debug">Dominant hue[debug]</Item>}
            </Picker>
          </div>
        </div>
      </div>
      <MasonryGallery
        aspectsByBreakpoint={{
          xs: 2,
          sm: 3,
          md: 4,
          lg: 4,
          xl: 5,
          // '2xl': 6.1,
        }}
        debugHue={sortKey === "hue_debug"}
        debugRating={sortKey === "rating" && showDebug}
        images={images}
        linkState={{
          sortKey,
          filterKeyword,
        }}
      />
    </>
  );
};

export const query = graphql`
  query GalleryPageQuery {
    allFile(
      filter: { sourceInstanceName: { eq: "gallery" } }
      sort: { fields: fields___imageMeta___dateTaken, order: DESC }
    ) {
      nodes {
        relativePath
        base
        childImageSharp {
          fluid {
            aspectRatio
          }
          gatsbyImageData(
            layout: CONSTRAINED
            height: 550
            placeholder: DOMINANT_COLOR
          )
        }
        fields {
          imageMeta {
            vibrantHue
            dominantHue
            dateTaken
            meta {
              Keywords
              Rating
              ObjectName
            }
            vibrant {
              Vibrant
            }
          }
        }
      }
    }
  }
`;

export default GalleryPage;