import { Image, Pressable, ScrollView, Text, View } from "react-native";
import Markdown from "react-native-markdown-display";
import * as WebBrowser from "expo-web-browser";
import { api } from "@/lib/trpc";
import { Archive, ArchiveRestore, Star, Trash } from "lucide-react-native";

import type { ZBookmark } from "@hoarder/trpc/types/bookmarks";

import { ActionButton } from "../ui/ActionButton";
import { Divider } from "../ui/Divider";
import { Skeleton } from "../ui/Skeleton";
import { useToast } from "../ui/Toast";

const MAX_LOADING_MSEC = 30 * 1000;

export function isBookmarkStillCrawling(bookmark: ZBookmark) {
  return (
    bookmark.content.type === "link" &&
    !bookmark.content.crawledAt &&
    Date.now().valueOf() - bookmark.createdAt.valueOf() < MAX_LOADING_MSEC
  );
}

export function isBookmarkStillTagging(bookmark: ZBookmark) {
  return (
    bookmark.taggingStatus === "pending" &&
    Date.now().valueOf() - bookmark.createdAt.valueOf() < MAX_LOADING_MSEC
  );
}

export function isBookmarkStillLoading(bookmark: ZBookmark) {
  return isBookmarkStillTagging(bookmark) || isBookmarkStillCrawling(bookmark);
}

function ActionBar({ bookmark }: { bookmark: ZBookmark }) {
  const { toast } = useToast();
  const apiUtils = api.useUtils();

  const { mutate: deleteBookmark, isPending: isDeletionPending } =
    api.bookmarks.deleteBookmark.useMutation({
      onSuccess: () => {
        apiUtils.bookmarks.getBookmarks.invalidate();
      },
      onError: () => {
        toast({
          message: "Something went wrong",
          variant: "destructive",
          showProgress: false,
        });
      },
    });
  const {
    mutate: updateBookmark,
    variables,
    isPending: isUpdatePending,
  } = api.bookmarks.updateBookmark.useMutation({
    onSuccess: () => {
      apiUtils.bookmarks.getBookmarks.invalidate();
      apiUtils.bookmarks.getBookmark.invalidate({ bookmarkId: bookmark.id });
    },
    onError: () => {
      toast({
        message: "Something went wrong",
        variant: "destructive",
        showProgress: false,
      });
    },
  });

  return (
    <View className="flex flex-row gap-4">
      <Pressable
        onPress={() =>
          updateBookmark({
            bookmarkId: bookmark.id,
            favourited: !bookmark.favourited,
          })
        }
      >
        {(variables ? variables.favourited : bookmark.favourited) ? (
          <Star fill="#ebb434" color="#ebb434" />
        ) : (
          <Star color="gray" />
        )}
      </Pressable>
      <ActionButton
        loading={isUpdatePending}
        onPress={() =>
          updateBookmark({
            bookmarkId: bookmark.id,
            archived: !bookmark.archived,
          })
        }
      >
        {bookmark.archived ? (
          <ArchiveRestore color="gray" />
        ) : (
          <Archive color="gray" />
        )}
      </ActionButton>
      <ActionButton
        loading={isDeletionPending}
        onPress={() =>
          deleteBookmark({
            bookmarkId: bookmark.id,
          })
        }
      >
        <Trash color="gray" />
      </ActionButton>
    </View>
  );
}

function TagList({ bookmark }: { bookmark: ZBookmark }) {
  const tags = bookmark.tags;

  if (isBookmarkStillTagging(bookmark)) {
    return (
      <>
        <Skeleton className="h-4 w-full" />
        <Skeleton className="h-4 w-full" />
      </>
    );
  }

  return (
    <ScrollView horizontal showsHorizontalScrollIndicator={false}>
      <View className="flex flex-row gap-2">
        {tags.map((t) => (
          <View
            key={t.id}
            className="rounded-full border border-gray-200 px-2.5 py-0.5 text-xs font-semibold"
          >
            <Text>{t.name}</Text>
          </View>
        ))}
      </View>
    </ScrollView>
  );
}

function LinkCard({ bookmark }: { bookmark: ZBookmark }) {
  if (bookmark.content.type !== "link") {
    throw new Error("Wrong content type rendered");
  }

  const url = bookmark.content.url;
  const parsedUrl = new URL(url);

  const imageComp = bookmark.content.imageUrl ? (
    <Image
      source={{ uri: bookmark.content.imageUrl }}
      className="h-56 min-h-56 w-full object-cover"
    />
  ) : (
    <Image
      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
      source={require("@/assets/blur.jpeg")}
      className="h-56 w-full rounded-t-lg"
    />
  );

  return (
    <View className="flex gap-2">
      {imageComp}
      <View className="flex gap-2 p-2">
        <Text
          className="line-clamp-2 text-xl font-bold"
          onPress={() => WebBrowser.openBrowserAsync(url)}
        >
          {bookmark.content.title ?? parsedUrl.host}
        </Text>
        <TagList bookmark={bookmark} />
        <Divider orientation="vertical" className="mt-2 h-0.5 w-full" />
        <View className="mt-2 flex flex-row justify-between px-2 pb-2">
          <Text className="my-auto line-clamp-1">{parsedUrl.host}</Text>
          <ActionBar bookmark={bookmark} />
        </View>
      </View>
    </View>
  );
}

function TextCard({ bookmark }: { bookmark: ZBookmark }) {
  if (bookmark.content.type !== "text") {
    throw new Error("Wrong content type rendered");
  }
  return (
    <View className="flex max-h-96 gap-2 p-2">
      <View className="max-h-56 overflow-hidden p-2">
        <Markdown>{bookmark.content.text}</Markdown>
      </View>
      <TagList bookmark={bookmark} />
      <Divider orientation="vertical" className="mt-2 h-0.5 w-full" />
      <View className="flex flex-row justify-between p-2">
        <View />
        <ActionBar bookmark={bookmark} />
      </View>
    </View>
  );
}

export default function BookmarkCard({
  bookmark: initialData,
}: {
  bookmark: ZBookmark;
}) {
  const { data: bookmark } = api.bookmarks.getBookmark.useQuery(
    {
      bookmarkId: initialData.id,
    },
    {
      initialData,
      refetchInterval: (query) => {
        const data = query.state.data;
        if (!data) {
          return false;
        }
        // If the link is not crawled or not tagged
        if (isBookmarkStillLoading(data)) {
          return 1000;
        }
        return false;
      },
    },
  );

  let comp;
  switch (bookmark.content.type) {
    case "link":
      comp = <LinkCard bookmark={bookmark} />;
      break;
    case "text":
      comp = <TextCard bookmark={bookmark} />;
      break;
  }

  return (
    <View className="border-b border-gray-300 bg-white">
      {comp}
    </View>
  );
}