"use client";


import Image from "next/image";
import Link from "next/link";
import { ArrowUpRightIcon, SearchIcon, XIcon } from "lucide-react";
import { useEffect, useMemo, useState, type ReactNode } from "react";
import { usePathname, useRouter, useSearchParams } from "next/navigation";

import { GuideImageExport } from "@/components/public/guide-image-export";
import { ExportText } from "@/components/public/export-language";
import { ScrollableNav } from "@/components/public/scrollable-nav";
import { Button } from "@/components/ui/button";
import { Badge } from "@/components/ui/badge";
import { Card, CardAction, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Kbd } from "@/components/ui/kbd";
import { Separator } from "@/components/ui/separator";
import { ToggleGroup, ToggleGroupItem } from "@/components/ui/toggle-group";
import { elementBackgroundColor } from "@/lib/catalog/element";
import { rarityGradientClass } from "@/lib/catalog/rarity";
import { isCustomTravelerKey } from "@/lib/catalog/travelers";
import type { PublicTeamCardData, PublicTeamConditionGroup } from "@/lib/guides/public-filters";
import {
  searchTeams,
  sortTeamsByDps,
  type DpsOrder,
  type TeamSearchTarget,
} from "@/lib/guides/team-search";
import { cn } from "@/lib/utils";

type Team = PublicTeamCardData;
type TeamArtifact = {
  key: string;
  name: string;
  imageUrl: string;
  rarity: number | null;
};

function ArtifactHalf({
  artifact,
  side,
  eager,
  linked,
  sizes,
}: {
  artifact: TeamArtifact;
  side: "left" | "right";
  eager: boolean;
  linked: boolean;
  sizes: string;
}) {
  const content = (
    <span className="relative block size-full">
      <Image
        src={artifact.imageUrl}
        alt={linked ? artifact.name : ""}
        fill
        loading={eager ? "eager" : undefined}
        sizes={sizes}
        className="object-contain p-1"
      />
    </span>
  );
  const className = cn(
    "absolute inset-0 overflow-hidden",
    side === "left"
      ? "[clip-path:polygon(0_0,0_100%,100%_100%)]"
      : "[clip-path:polygon(0_0,100%_0,100%_100%)]",
    rarityGradientClass(artifact.rarity),
  );

  return linked ? (
    <Link
      href={`https://lunaris.moe/artifact/${encodeURIComponent(artifact.key)}`}
      target="_blank"
      rel="noreferrer"
      aria-label={`เปิดข้อมูลอาร์ติแฟกต์ ${artifact.name} บน Lunaris`}
      className={className}
    >
      {content}
    </Link>
  ) : (
    <span className={className}>{content}</span>
  );
}

export function TeamArtifactIcon({
  first,
  second,
  eager = false,
  linked = false,
  className,
  sizes,
}: {
  first: TeamArtifact | null;
  second: TeamArtifact | null;
  eager?: boolean;
  linked?: boolean;
  className?: string;
  sizes: string;
}) {
  const primary = first ?? second;
  const secondary = first ? second : null;

  if (!primary) {
    return <div className={cn("aspect-square rounded-md border bg-muted", className)} />;
  }

  if (!secondary) {
    const content = (
      <>
        <Image
          src={primary.imageUrl}
          alt={linked ? primary.name : ""}
          fill
          loading={eager ? "eager" : undefined}
          sizes={sizes}
          className="object-contain p-1"
        />
        {linked ? (
          <Kbd className="absolute top-0 right-0 h-3 min-w-3 bg-transparent p-0 text-white">
            <ArrowUpRightIcon aria-hidden="true" />
          </Kbd>
        ) : null}
      </>
    );
    const artifactClassName = cn(
      "relative aspect-square scale-110 overflow-hidden rounded-md bg-muted",
      rarityGradientClass(primary.rarity),
      className,
    );

    return linked ? (
      <Link
        href={`https://lunaris.moe/artifact/${encodeURIComponent(primary.key)}`}
        target="_blank"
        rel="noreferrer"
        aria-label={`เปิดข้อมูลอาร์ติแฟกต์ ${primary.name} บน Lunaris`}
        className={artifactClassName}
      >
        {content}
      </Link>
    ) : (
      <div className={artifactClassName}>{content}</div>
    );
  }

  return (
    <div className={cn("relative aspect-square scale-110 overflow-hidden rounded-md", className)}>
      <ArtifactHalf artifact={primary} side="left" eager={eager} linked={linked} sizes={sizes} />
      <ArtifactHalf artifact={secondary} side="right" eager={eager} linked={linked} sizes={sizes} />
      <span
        aria-hidden="true"
        className="pointer-events-none absolute top-1/2 left-1/2 h-px w-[142%] -translate-x-1/2 -translate-y-1/2 rotate-45 bg-white/30"
      />
      {linked ? (
        <Kbd className="pointer-events-none absolute top-0 right-0 h-3 min-w-3 bg-transparent p-0 text-white">
          <ArrowUpRightIcon aria-hidden="true" />
        </Kbd>
      ) : null}
    </div>
  );
}

function TeamExportImage({ team }: { team: Team }) {
  const total = team.members.reduce((sum, member) => sum + Number(member.damage), 0);
  const seconds = Number(team.rotationSeconds);
  return (
    <div className="flex min-h-337.5 w-270 flex-col bg-[#05060a] p-[48px_52px] font-heading text-[white]">
      <header className="flex flex-col items-center text-center">
        <h2 className="text-[64px] leading-tight font-bold">{team.title}</h2>
        <p className="text-[32px] text-[#b9b9c2]">
          <ExportText
            th={`ระยะเวลาโรเทชั่น: ${seconds.toLocaleString("en-US", { maximumFractionDigits: 2 })} วินาที`}
            en={`Rotation duration: ${seconds.toLocaleString("en-US", { maximumFractionDigits: 2 })} seconds`}
          />
        </p>
      </header>
      <div className="mt-5 flex flex-col gap-4">
        {team.members.map((member) => {
          const damage = Number(member.damage);
          const percent = total > 0 ? damage / total * 100 : 0;
          return (
            <div key={member.position} className="flex h-43.5 items-center gap-6 rounded-3xl p-3.5" style={{ backgroundColor: elementBackgroundColor(member.character.element) }}>
              <div className={cn("relative size-35 shrink-0 overflow-hidden rounded-3xl border-[3px] border-white/20", rarityGradientClass(isCustomTravelerKey(member.character.key) ? 5 : member.character.rarity))}>
                <Image src={member.character.imageUrl} alt="" fill loading="eager" sizes="140px" className="object-contain" />
              </div>
              <div className="grid w-44 shrink-0 grid-cols-2 gap-3">
                {member.weapon ? <div className={cn("relative aspect-square min-w-0 scale-110 overflow-hidden rounded-2xl", rarityGradientClass(member.weapon.rarity))}><Image src={member.weapon.imageUrl} alt="" fill loading="eager" sizes="82px" className="object-contain p-1" /></div> : null}
                <TeamArtifactIcon
                  first={member.artifact}
                  second={member.secondArtifact}
                  eager
                  sizes="82px"
                  className="min-w-0 rounded-2xl"
                />
              </div>
              <div className="flex min-w-0 flex-1 flex-col gap-3.5">
                <div className="flex items-center justify-between gap-4">
                  <span className="flex min-w-0 items-baseline gap-3 text-[36px] font-semibold">
                    <span className="truncate">{member.character.name}</span>
                    <span className="shrink-0 text-[28px] text-[#f0c95f]">C{member.constellation}R{member.refinement}</span>
                  </span>
                  <span className="shrink-0 text-[36px]">{damage.toLocaleString("en-US")}</span>
                </div>
                <div className="flex items-center gap-5"><div className="h-11 flex-1 overflow-hidden rounded-xl bg-[#272730]"><div className="h-full rounded-xl bg-linear-to-r from-[#b7791f] to-[#f0b72f]" style={{ width: `${Math.max(2, Math.min(100, percent))}%` }} /></div><span className="w-28 text-right text-[34px] font-bold">{percent.toFixed(1)}%</span></div>
              </div>
            </div>
          );
        })}
      </div>
      <div className="my-3 flex flex-1 items-center justify-center rounded-2xl bg-[#272730] p-4 text-center text-[28px] leading-[1.4]"><p className="whitespace-pre-wrap">{team.combo}</p></div>
      <div className="flex shrink-0 justify-center border-t-2 border-[#34343d] pt-6 text-[64px] font-bold text-[#f0c95f]">DPS: {seconds > 0 ? (total / seconds).toLocaleString("en-US", { maximumFractionDigits: 0 }) : "0"}</div>
      <div className="mt-5 flex shrink-0 justify-center text-[40px] text-[#74747f]">By YT เกนชินไม่ใช่เกมมือถือ</div>
    </div>
  );
}

function TeamCard({
  team,
  action,
  exporting = false,
}: {
  team: Team;
  action?: ReactNode;
  exporting?: boolean;
}) {
  const total = team.members.reduce(
    (sum, member) => sum + Number(member.damage),
    0,
  );
  const seconds = Number(team.rotationSeconds);

  return (
    <Card>
      <CardHeader>
        <CardTitle>{team.title}</CardTitle>
        <CardDescription>โรเทชั่น {seconds} วิ</CardDescription>
        {action ? <CardAction>{action}</CardAction> : null}
      </CardHeader>
      <CardContent className="flex flex-col gap-4">
        <div
          className={cn(
            "grid grid-cols-4",
            exporting ? "gap-3" : "gap-1 sm:gap-3",
          )}
        >
          {team.members.map((member) => (
            <div
              key={member.position}
              className={cn(
                "min-w-0 rounded-lg text-center",
                exporting ? "p-2" : "p-1 sm:p-2",
              )}
              style={{
                backgroundColor: elementBackgroundColor(
                  member.character.element,
                ),
              }}
            >
              <div
                className={cn(
                  "gap-2",
                  exporting
                    ? "grid grid-cols-3"
                    : "flex flex-col sm:grid sm:grid-cols-3",
                )}
              >
                <div
                  className={cn(
                    "relative aspect-square min-h-0 overflow-hidden rounded-lg bg-muted",
                    exporting
                      ? "col-span-2 row-span-2"
                      : "sm:col-span-2 sm:row-span-2",
                    rarityGradientClass(
                      isCustomTravelerKey(member.character.key)
                        ? 5
                        : member.character.rarity,
                    ),
                  )}
                >
                  <Image
                    src={member.character.imageUrl}
                    alt={member.character.name}
                    fill
                    loading={exporting ? "eager" : undefined}
                    sizes="(min-width: 1280px) 184px, (min-width: 640px) 16vw, 25vw"
                    className="object-contain"
                  />
                </div>
                <div
                  className={cn(
                    "min-w-0 grid grid-cols-2 gap-2",
                    exporting
                      ? "row-span-2"
                      : "sm:row-span-2",
                  )}
                >
                  {member.weapon ? (
                    <a
                      href={`https://lunaris.moe/weapon/${encodeURIComponent(member.weapon.key)}`}
                      target="_blank"
                      rel="noreferrer"
                      tabIndex={exporting ? -1 : undefined}
                      aria-label={`เปิดข้อมูลอาวุธ ${member.weapon.name} บน Lunaris`}
                      className={cn(
                        "relative aspect-square scale-110 overflow-hidden rounded-md bg-muted outline-none sm:col-span-2",
                        rarityGradientClass(member.weapon.rarity),
                      )}
                    >
                      <Image
                        src={member.weapon.imageUrl}
                        alt={member.weapon.name}
                        fill
                        loading={exporting ? "eager" : undefined}
                        sizes="(min-width: 1280px) 86px, (min-width: 640px) 8vw, 12.5vw"
                        className="object-contain p-1"
                      />
                      <Kbd className="absolute top-0 right-0 h-3 min-w-3 bg-transparent p-0 text-white">
                        <ArrowUpRightIcon aria-hidden="true" />
                      </Kbd>
                    </a>
                  ) : (
                    <div className="aspect-square rounded-md border bg-muted sm:col-span-2" />
                  )}
                  <TeamArtifactIcon
                    first={member.artifact}
                    second={member.secondArtifact}
                    eager={exporting}
                    linked={!exporting}
                    sizes="64px"
                    className="order-first sm:order-0 sm:col-span-2"
                  />
                </div>
              </div>
              <div className="mt-2 flex items-center justify-center gap-1">
                <Badge variant="secondary">C{member.constellation}</Badge>
                <Badge variant="secondary">R{member.refinement}</Badge>
              </div>
              <p className="mt-1 truncate text-sm font-medium">
                {member.character.name}
              </p>
              <p className="text-sm font-semibold">
                {Number(member.damage).toLocaleString(undefined, {
                  maximumFractionDigits: 2,
                })}
              </p>
              <p className="text-xs text-muted-foreground">
                {total
                  ? ((Number(member.damage) / total) * 100).toFixed(2)
                  : "0.00"}
                %
              </p>
            </div>
          ))}
        </div>
        <Separator />
        <div className="flex items-end justify-between">
          <div>
            <p className="text-sm text-muted-foreground">ดาเมจรวม</p>
            <p className="font-semibold">{total.toLocaleString()}</p>
          </div>
          <div className="text-right">
            <p className="text-sm text-muted-foreground">DPS</p>
            <p className="text-3xl font-semibold text-primary">
              {seconds > 0
                ? (total / seconds).toLocaleString(undefined, {
                    maximumFractionDigits: 0,
                  })
                : "0"}
            </p>
          </div>
        </div>
        <p className="rounded-lg bg-muted p-3 text-sm leading-6">
          {team.combo}
        </p>
      </CardContent>
    </Card>
  );
}

export function TeamSearch({
  groups,
  serverFilters,
}: {
  groups: PublicTeamConditionGroup[];
  serverFilters?: {
    conditionIndex: number;
    query: string;
    field: TeamSearchTarget;
    sort: DpsOrder;
  };
}) {
  const router = useRouter();
  const pathname = usePathname();
  const searchParams = useSearchParams();
  const searchString = searchParams.toString();
  const [activeCondition, setActiveCondition] = useState("0");
  const activeConditionIndex = serverFilters?.conditionIndex ?? Number(activeCondition);
  const activeGroup = groups[activeConditionIndex] ?? groups[0];
  const teams = useMemo(() => activeGroup?.teams ?? [], [activeGroup]);
  const [query, setQuery] = useState(serverFilters?.query ?? "");
  const [searchTarget, setSearchTarget] = useState<TeamSearchTarget>("all");
  const [dpsOrder, setDpsOrder] = useState<DpsOrder>(null);
  const currentQuery = serverFilters?.query ?? "";
  const currentField = serverFilters?.field ?? searchTarget;
  const currentSort = serverFilters?.sort ?? dpsOrder;

  useEffect(() => {
    if (!serverFilters) return;
    const nextQuery = query.trim();
    if (nextQuery === currentQuery) return;
    const timeout = window.setTimeout(() => {
      const nextParams = new URLSearchParams(searchString);
      if (nextQuery) nextParams.set("q", nextQuery);
      else nextParams.delete("q");
      const queryString = nextParams.toString();
      router.replace(`${pathname}${queryString ? `?${queryString}` : ""}`, { scroll: false });
    }, 300);
    return () => window.clearTimeout(timeout);
  }, [currentQuery, pathname, query, router, searchString, serverFilters]);

  const localSearch = useMemo(
    () => serverFilters ? null : searchTeams(teams, (team) => ({
        team: [team.title],
        character: team.members.flatMap((member) => [member.character.name, ...(member.character.aliases ?? [])]),
        weapon: team.members.flatMap((member) => member.weapon ? [member.weapon.name, ...(member.weapon.aliases ?? [])] : []),
        artifact: team.members.flatMap((member) => [member.artifact, member.secondArtifact].flatMap((artifact) => artifact ? [artifact.name, ...(artifact.aliases ?? [])] : [])),
      }), query, currentField),
    [currentField, query, serverFilters, teams],
  );
  const filteredTeams = serverFilters
    ? teams
    : sortTeamsByDps(localSearch?.items ?? [], currentSort);

  function updateUrl(name: string, value: string | null) {
    const nextParams = new URLSearchParams(searchString);
    const nextQuery = query.trim();
    if (nextQuery) nextParams.set("q", nextQuery);
    else nextParams.delete("q");
    if (value === null) nextParams.delete(name);
    else nextParams.set(name, value);
    const queryString = nextParams.toString();
    router.push(`${pathname}${queryString ? `?${queryString}` : ""}`, { scroll: false });
  }

  function selectCondition(index: number) {
    if (!serverFilters) {
      setActiveCondition(String(index));
      return;
    }
    updateUrl("condition", index === 0 ? null : String(index + 1));
  }

  function selectField(field: TeamSearchTarget) {
    if (!serverFilters) {
      setSearchTarget(field);
      return;
    }
    updateUrl("field", field === "all" ? null : field);
  }

  function selectSort(order: Exclude<DpsOrder, null>) {
    if (!serverFilters) {
      setDpsOrder(order);
      return;
    }
    updateUrl("sort", order);
  }

  function clearSort() {
    if (!serverFilters) {
      setDpsOrder(null);
      return;
    }
    updateUrl("sort", null);
  }

  return (
    <div className="flex min-w-0 flex-col gap-4">
      {groups.length > 1 ? (
        <ScrollableNav ariaLabel="เลือกเงื่อนไขทีม" className="w-full min-w-0">
          <ToggleGroup aria-label="เลือกเงื่อนไขทีม" variant="outline" value={[String(activeConditionIndex)]} onValueChange={(values) => {
            if (values[0]) selectCondition(Number(values[0]));
          }}>
            {groups.map((group, index) => <ToggleGroupItem key={group.id} value={String(index)} className="aria-pressed:bg-primary aria-pressed:text-primary-foreground">{group.name || `เงื่อนไข ${index + 1}`}</ToggleGroupItem>)}
          </ToggleGroup>
        </ScrollableNav>
      ) : null}
      {activeGroup?.note ? <p className="whitespace-pre-wrap text-muted-foreground">{activeGroup.note}</p> : null}
      <div className="relative">
        <SearchIcon aria-hidden="true" className="pointer-events-none absolute top-1/2 left-3 size-4 -translate-y-1/2 text-muted-foreground" />
        <Input
          aria-label="ค้นหาทีม ตัวละคร อาวุธ หรืออาร์ติแฟกต์"
          className="pl-9"
          placeholder="ค้นหาทีม ตัวละคร อาวุธ หรืออาร์ติแฟกต์"
          value={query}
          onValueChange={setQuery}
        />
      </div>
      <ToggleGroup
        aria-label="เลือกประเภทข้อมูลที่ต้องการค้นหา"
        className="max-w-full flex-wrap justify-start"
        variant="outline"
        size="sm"
        value={[currentField]}
        onValueChange={(value) => {
          const field = value[0] as TeamSearchTarget | undefined;
          if (field) selectField(field);
        }}
      >
        <ToggleGroupItem value="all">ทั้งหมด</ToggleGroupItem>
        <ToggleGroupItem value="team">ชื่อทีม</ToggleGroupItem>
        <ToggleGroupItem value="character">ตัวละคร</ToggleGroupItem>
        <ToggleGroupItem value="weapon">อาวุธ</ToggleGroupItem>
        <ToggleGroupItem value="artifact">อาร์ติแฟกต์</ToggleGroupItem>
      </ToggleGroup>
      <div className="flex items-center gap-2">
        <ToggleGroup
          aria-label="เรียงทีมตาม DPS"
          variant="outline"
          size="sm"
          value={currentSort ? [currentSort] : []}
          onValueChange={(value) => {
            const order = value[0] as Exclude<DpsOrder, null> | undefined;
            if (order) selectSort(order);
          }}
        >
          <ToggleGroupItem value="best">Best DPS</ToggleGroupItem>
          <ToggleGroupItem value="worst">Worst DPS</ToggleGroupItem>
        </ToggleGroup>
        <Button
          variant="ghost"
          size="sm"
          disabled={!currentSort}
          onClick={clearSort}
        >
          <XIcon data-icon="inline-start" />
          Clear
        </Button>
      </div>
      {filteredTeams.length ? (
        <div className="grid gap-5 xl:grid-cols-2">
          {filteredTeams.map((team) => (
            <TeamCard
              key={team.id}
              team={team}
              action={
                <GuideImageExport
                  fileName={`${team.title}.png`}
                  width={1080}
                  captureClassName="p-0"
                  allowWithoutNotes={false}
                  mobileIconOnly
                  showLanguageSelector={false}
                  promptForLanguage
                >
                  <TeamExportImage team={team} />
                </GuideImageExport>
              }
            />
          ))}
        </div>
      ) : (
        <Card>
          <CardContent className="py-8 text-center text-sm text-muted-foreground">
            ไม่พบทีมที่ตรงกับคำค้นหา
          </CardContent>
        </Card>
      )}
    </div>
  );
}