"use client";

import Image from "next/image";
import Link from "next/link";
import { ArrowUpRightIcon, SearchIcon } from "lucide-react";
import { useMemo, useState, type ReactNode } from "react";

import { GuideImageExport } from "@/components/public/guide-image-export";
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 { PublicGuide } from "@/lib/guides/queries";
import {
  matchesTeamSearch,
  type TeamSearchTarget,
} from "@/lib/guides/team-search";
import { cn } from "@/lib/utils";

type Team = PublicGuide["teams"][number];
type TeamArtifact = NonNullable<Team["members"][number]["artifact"]>;

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>
      {linked ? (
        <Kbd
          className={cn(
            "absolute h-3 min-w-3 bg-transparent p-0 text-white",
            side === "left" ? "bottom-0 left-0" : "top-0 right-0",
          )}
        >
          <ArrowUpRightIcon aria-hidden="true" />
        </Kbd>
      ) : null}
    </>
  );
  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>
  );
}

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"
      />
    </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 h-[1350px] w-[1080px] 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]">ระยะเวลาโรเทชั่น {seconds.toLocaleString(undefined, { maximumFractionDigits: 2 })} วิ</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-[174px] items-center gap-6 rounded-3xl p-3.5" style={{ backgroundColor: elementBackgroundColor(member.character.element) }}>
              <div className={cn("relative size-[140px] 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" />
                <span className="absolute top-1.5 left-1.5 text-xl font-bold">C{member.constellation}</span>
              </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" /><span className="absolute top-1 left-1 text-base font-bold">R{member.refinement}</span></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="truncate text-[36px] font-semibold">{member.character.name}</span><span className="text-[36px]">{damage.toLocaleString()}</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-gradient-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 min-h-0 flex-1 items-center justify-center overflow-hidden rounded-2xl bg-[#272730] p-4 text-center text-[28px] leading-[1.4]"><p className="line-clamp-3 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(undefined, { 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}
                    className="object-contain"
                  />
                  <Kbd className="absolute top-0 left-0 bg-transparent text-white">
                    C{member.constellation}
                  </Kbd>
                </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 col-span-2 aspect-square scale-110 overflow-hidden rounded-md bg-muted outline-none",
                        rarityGradientClass(member.weapon.rarity),
                      )}
                    >
                      <Image
                        src={member.weapon.imageUrl}
                        alt={member.weapon.name}
                        fill
                        loading={exporting ? "eager" : undefined}
                        className="object-contain p-1"
                      />
                      <Kbd className="absolute top-0 left-0 h-4 min-w-4 whitespace-nowrap bg-transparent px-0.5 text-[9px] text-white">
                        R{member.refinement}
                      </Kbd>
                      <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="col-span-2 aspect-square rounded-md border bg-muted" />
                  )}
                  <TeamArtifactIcon
                    first={member.artifact}
                    second={member.secondArtifact}
                    eager={exporting}
                    linked={!exporting}
                    sizes="64px"
                    className="col-span-2"
                  />
                </div>
              </div>
              <p className="mt-2 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({ teams }: { teams: PublicGuide["teams"] }) {
  const [query, setQuery] = useState("");
  const [searchTarget, setSearchTarget] = useState<TeamSearchTarget>("all");
  const filteredTeams = useMemo(
    () => teams.filter((team) => matchesTeamSearch({
      team: [team.title],
      character: team.members.map((member) => member.character.name),
      weapon: team.members.flatMap((member) => member.weapon ? [member.weapon.name] : []),
      artifact: team.members.flatMap((member) => [member.artifact, member.secondArtifact].flatMap((artifact) => artifact ? [artifact.name] : [])),
    }, query, searchTarget)),
    [query, searchTarget, teams],
  );

  return (
    <div className="flex flex-col gap-4">
      <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={[searchTarget]}
        onValueChange={(value) => {
          const target = value[0] as TeamSearchTarget | undefined;
          if (target) setSearchTarget(target);
        }}
      >
        <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>
      {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} height={1350} captureClassName="p-0">
                  <TeamExportImage team={team} />
                </GuideImageExport>
              }
            />
          ))}
        </div>
      ) : (
        <Card>
          <CardContent className="py-8 text-center text-sm text-muted-foreground">
            ไม่พบทีมที่ตรงกับคำค้นหา
          </CardContent>
        </Card>
      )}
    </div>
  );
}