"use client";

import {
  Box,
  Flex,
  Heading,
  Text,
  Card,
  VStack,
  HStack,
  Badge,
  Spinner,
  Button,
  SimpleGrid,
} from "@chakra-ui/react";
import { useTranslations } from "next-intl";
import { useColorModeValue } from "@/components/ui/color-mode";
import { SlideUp } from "@/components/motion";
import {
  useAnalyzeMatches,
  useAnalysisHistory,
} from "@/lib/api/analysis/use-hooks";
import { useQueryMatches } from "@/lib/api/matches/use-hooks";
import type { LeagueWithMatchesDto } from "@/lib/api/matches/types";
import { LuSparkles, LuClock, LuCheck } from "react-icons/lu";
import { useState } from "react";
import { toaster } from "@/components/ui/feedback/toaster";

export default function AnalysisContent() {
  const t = useTranslations("analysis");
  const tCommon = useTranslations("common");

  const cardBg = useColorModeValue("white", "gray.800");
  const borderColor = useColorModeValue("gray.100", "gray.700");

  const [selectedMatchIds, setSelectedMatchIds] = useState<string[]>([]);

  const upcomingMatches = useQueryMatches();
  const analyzeMutation = useAnalyzeMatches();
  const historyQuery = useAnalysisHistory();
  const toast = (opts: { title: string; status: string }) =>
    toaster.create({
      title: opts.title,
      type: opts.status as "success" | "warning" | "error" | "info" | "loading",
    });

  const toggleMatch = (id: string) => {
    setSelectedMatchIds((prev) =>
      prev.includes(id) ? prev.filter((x) => x !== id) : [...prev, id],
    );
  };

  const handleAnalyze = async () => {
    if (selectedMatchIds.length < 2) {
      toast({
        title: t("select-at-least-2"),
        status: "warning",
      });
      return;
    }
    await analyzeMutation.mutateAsync({ matchIds: selectedMatchIds });
    toast({
      title: t("analysis-complete"),
      status: "success",
    });
    historyQuery.refetch();
  };

  const allMatches: { id: string; home: string; away: string; date: string }[] =
    upcomingMatches.data?.data
      ?.flatMap((league: LeagueWithMatchesDto) =>
        league.matches?.map((m) => ({
          id: m.id,
          home: m.homeTeam?.name || "",
          away: m.awayTeam?.name || "",
          date: m.mstUtc ? new Date(m.mstUtc).toLocaleDateString() : "",
        })),
      )
      .filter(Boolean) || [];

  return (
    <SlideUp>
      <Box maxW="6xl" mx="auto">
        <Heading as="h1" size="xl" fontWeight="bold" mb={6}>
          {t("title")}
        </Heading>

        <Flex gap={6} direction={{ base: "column", lg: "row" }}>
          {/* Match Selection */}
          <Box flex={2}>
            <Card.Root
              bg={cardBg}
              borderColor={borderColor}
              borderRadius="xl"
              mb={6}
            >
              <Card.Header>
                <Flex justify="space-between" align="center">
                  <Heading as="h3" size="sm">
                    {t("select-matches")}
                  </Heading>
                  <Badge
                    colorScheme={
                      selectedMatchIds.length > 0 ? "primary" : "gray"
                    }
                  >
                    {selectedMatchIds.length} {t("selected")}
                  </Badge>
                </Flex>
              </Card.Header>
              <Card.Body pt={0}>
                {upcomingMatches.isPending ? (
                  <Flex justify="center" py={6}>
                    <Spinner size="sm" />
                  </Flex>
                ) : (
                  <VStack gap={2}>
                    {allMatches.map((m) => {
                      const isSelected = selectedMatchIds.includes(m.id);
                      return (
                        <Flex
                          key={m.id}
                          p={3}
                          borderRadius="md"
                          borderWidth="1px"
                          borderColor={isSelected ? "primary.500" : borderColor}
                          bg={isSelected ? "primary.50" : "transparent"}
                          _dark={isSelected ? { bg: "primary.900" } : undefined}
                          justify="space-between"
                          align="center"
                          cursor="pointer"
                          onClick={() => toggleMatch(m.id)}
                        >
                          <HStack gap={3}>
                            <Box
                              boxSize="20px"
                              borderRadius="sm"
                              borderWidth="2px"
                              borderColor={
                                isSelected ? "primary.500" : "gray.300"
                              }
                              bg={isSelected ? "primary.500" : "transparent"}
                              display="flex"
                              alignItems="center"
                              justifyContent="center"
                              color="white"
                            >
                              {isSelected ? <LuCheck size="12" /> : null}
                            </Box>
                            <Text fontSize="sm" fontWeight="medium">
                              {m.home} vs {m.away}
                            </Text>
                          </HStack>
                          <Text fontSize="xs" color="fg.muted">
                            {m.date}
                          </Text>
                        </Flex>
                      );
                    })}
                  </VStack>
                )}
                <Button
                  mt={4}
                  w="full"
                  onClick={handleAnalyze}
                  loading={analyzeMutation.isPending}
                  disabled={selectedMatchIds.length < 2}
                >
                  <LuSparkles /> {t("analyze-matches")}
                </Button>
              </Card.Body>
            </Card.Root>
          </Box>

          {/* Analysis History */}
          <Box flex={1}>
            <Card.Root bg={cardBg} borderColor={borderColor} borderRadius="xl">
              <Card.Header>
                <Heading as="h3" size="sm">
                  <HStack gap={2}>
                    <LuClock />
                    <Text>{t("history")}</Text>
                  </HStack>
                </Heading>
              </Card.Header>
              <Card.Body pt={0}>
                {historyQuery.isLoading ? (
                  <Flex justify="center" py={6}>
                    <Spinner size="sm" />
                  </Flex>
                ) : historyQuery.data?.data?.analyses &&
                  historyQuery.data.data.analyses.length > 0 ? (
                  <VStack gap={3}>
                    {historyQuery.data.data.analyses.map(
                      (a: {
                        id: string;
                        matchIds: string[];
                        createdAt: string;
                      }) => (
                        <Card.Root
                          key={a.id}
                          size="sm"
                          borderWidth="1px"
                          borderColor={borderColor}
                        >
                          <Card.Body>
                            <VStack align="start" gap={1}>
                              <Text fontSize="sm" fontWeight="semibold">
                                {a.matchIds.length} {t("matches-analyzed")}
                              </Text>
                              <Text fontSize="xs" color="fg.muted">
                                {new Date(a.createdAt).toLocaleString()}
                              </Text>
                            </VStack>
                          </Card.Body>
                        </Card.Root>
                      ),
                    )}
                  </VStack>
                ) : (
                  <Text color="fg.muted" textAlign="center" py={6}>
                    {t("no-history")}
                  </Text>
                )}
              </Card.Body>
            </Card.Root>
          </Box>
        </Flex>
      </Box>
    </SlideUp>
  );
}