import React from "react";
import {
  Box,
  Grid,
  Icon,
  IconButton,
  Input,
  InputGroup,
  InputLeftElement,
  InputRightElement,
  useToast,
} from "@chakra-ui/core";
import { Helmet } from "react-helmet";

import ItemsPanel from "./ItemsPanel";
import OutfitPreview from "./OutfitPreview";
import SearchPanel from "./SearchPanel";
import useOutfitState from "./useOutfitState.js";

function WardrobePage() {
  const { loading, error, outfitState, dispatchToOutfit } = useOutfitState();
  const [searchQuery, setSearchQuery] = React.useState("");
  const toast = useToast();
  const searchContainerRef = React.useRef();
  const searchQueryRef = React.useRef();
  const firstSearchResultRef = React.useRef();

  React.useEffect(() => {
    if (error) {
      console.log(error);
      toast({
        title: "We couldn't load this outfit 😖",
        description: "Please reload the page to try again. Sorry!",
        status: "error",
        isClosable: true,
        duration: 999999999,
      });
    }
  }, [error, toast]);

  React.useEffect(() => {
    if (searchContainerRef.current) {
      searchContainerRef.current.scrollTop = 0;
    }
  }, [searchQuery]);

  return (
    <>
      <Helmet>
        <title>
          {outfitState.name || "Untitled outfit"} | Dress to Impress
        </title>
      </Helmet>
      <Box position="absolute" top="0" bottom="0" left="0" right="0">
        <Grid
          // Fullscreen, split into a vertical stack on smaller screens
          // or a horizontal stack on larger ones!
          templateAreas={{
            base: `"outfit"
                 "search"
                 "items"`,
            lg: `"outfit search"
               "outfit items"`,
          }}
          templateRows={{
            base: "minmax(100px, 1fr) auto minmax(300px, 1fr)",
            lg: "auto 1fr",
          }}
          templateColumns={{
            base: "100%",
            lg: "50% 50%",
          }}
          height="100%"
          width="100%"
        >
          <Box gridArea="outfit" backgroundColor="gray.900">
            <OutfitPreview
              outfitState={outfitState}
              dispatchToOutfit={dispatchToOutfit}
            />
          </Box>
          <Box gridArea="search" boxShadow="sm">
            <Box px="5" py="3">
              <SearchToolbar
                query={searchQuery}
                queryRef={searchQueryRef}
                onChange={setSearchQuery}
                onMoveFocusDownToResults={(e) => {
                  if (firstSearchResultRef.current) {
                    firstSearchResultRef.current.focus();
                    e.preventDefault();
                  }
                }}
              />
            </Box>
          </Box>

          {searchQuery ? (
            <Box
              gridArea="items"
              position="relative"
              overflow="auto"
              key="search-panel"
              ref={searchContainerRef}
            >
              <Box px="4" py="5">
                <SearchPanel
                  query={searchQuery}
                  outfitState={outfitState}
                  dispatchToOutfit={dispatchToOutfit}
                  firstSearchResultRef={firstSearchResultRef}
                  onMoveFocusUpToQuery={(e) => {
                    if (searchQueryRef.current) {
                      searchQueryRef.current.focus();
                      e.preventDefault();
                    }
                  }}
                />
              </Box>
            </Box>
          ) : (
            <Box
              gridArea="items"
              position="relative"
              overflow="auto"
              key="items-panel"
            >
              <Box px="5" py="5">
                <ItemsPanel
                  loading={loading}
                  outfitState={outfitState}
                  dispatchToOutfit={dispatchToOutfit}
                />
              </Box>
            </Box>
          )}
        </Grid>
      </Box>
    </>
  );
}

function SearchToolbar({
  query,
  queryRef,
  onChange,
  onMoveFocusDownToResults,
}) {
  return (
    <InputGroup>
      <InputLeftElement>
        <Icon name="search" color="gray.400" />
      </InputLeftElement>
      <Input
        placeholder="Search for items to add…"
        focusBorderColor="green.600"
        color="green.800"
        value={query}
        ref={queryRef}
        onChange={(e) => onChange(e.target.value)}
        onKeyDown={(e) => {
          if (e.key === "Escape") {
            onChange("");
            e.target.blur();
          } else if (e.key === "ArrowDown") {
            onMoveFocusDownToResults(e);
          }
        }}
      />
      {query && (
        <InputRightElement>
          <IconButton
            icon="close"
            color="gray.400"
            variant="ghost"
            variantColor="green"
            aria-label="Clear search"
            onClick={() => onChange("")}
            // Big style hacks here!
            height="calc(100% - 2px)"
            marginRight="2px"
          />
        </InputRightElement>
      )}
    </InputGroup>
  );
}

export default WardrobePage;