/* ============================================================
   IO PAGE — Input / Output Selection
   Design: Reference luxsin_x8_输入输出.jpg
   - Circular icon buttons in a grid (3 cols)
   - Active = cyan fill + glow
   - Inactive = dark gray circle
   ============================================================ */
import { useDevice } from "@/contexts/DeviceContext";
import { cn } from "@/lib/utils";
import BottomNav from "@/components/BottomNav";
import { ChevronLeft } from "lucide-react";
import { useLocation } from "wouter";
import { useMemo } from "react";
import localeZh from "@/locales/data-zh.json";
import localeEn from "@/locales/data-en.json";
import { resolveLocalePack } from "@/locales/resolveLocale";
import { usePageTitleWithConnection } from "@/hooks/usePageTitleWithConnection";

type SourceLocale = NonNullable<(typeof localeZh)["source"]>;

interface IOOption {
  index: number;
  label: string;
  icon: React.ReactNode;
}

interface IOOptionDef {
  index: number;
  icon: React.ReactNode;
}

const INPUT_OPTION_DEFS: IOOptionDef[] = [
  {
    index: 0,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <rect x="8" y="6" width="8" height="12" rx="1.5" />
        <line x1="10" y1="6" x2="10" y2="4" />
        <line x1="14" y1="6" x2="14" y2="4" />
      </svg>
    ),
  },
  {
    index: 1,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <rect x="5" y="9" width="14" height="6" rx="3" />
      </svg>
    ),
  },
  {
    index: 2,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <circle cx="12" cy="12" r="8" />
        <circle cx="12" cy="12" r="3" fill="currentColor" stroke="none" />
      </svg>
    ),
  },
  {
    index: 3,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <rect x="7" y="7" width="10" height="10" rx="1" />
        <line x1="12" y1="3" x2="12" y2="7" />
        <line x1="12" y1="17" x2="12" y2="21" />
      </svg>
    ),
  },
  {
    index: 4,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <polyline points="6.5 6.5 17.5 17.5 12 23 12 1 17.5 6.5 6.5 17.5" />
      </svg>
    ),
  },
  {
    index: 5,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <rect x="3" y="8" width="18" height="10" rx="1.5" />
        <line x1="7" y1="8" x2="7" y2="18" />
        <line x1="12" y1="8" x2="12" y2="18" />
        <line x1="17" y1="8" x2="17" y2="18" />
      </svg>
    ),
  },
];

const OUTPUT_OPTION_DEFS: IOOptionDef[] = [
  {
    index: 0,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <circle cx="12" cy="12" r="8" />
        <circle cx="9" cy="10" r="1.5" fill="currentColor" stroke="none" />
        <circle cx="15" cy="10" r="1.5" fill="currentColor" stroke="none" />
        <circle cx="12" cy="15" r="1.5" fill="currentColor" stroke="none" />
      </svg>
    ),
  },
  {
    index: 1,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <circle cx="12" cy="12" r="8" />
        <circle cx="12" cy="12" r="3" fill="currentColor" stroke="none" />
      </svg>
    ),
  },
  {
    index: 2,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <path d="M3 18v-6a9 9 0 0 1 18 0v6" />
        <path d="M21 19a2 2 0 0 1-2 2h-1a2 2 0 0 1-2-2v-3a2 2 0 0 1 2-2h3z" />
        <path d="M3 19a2 2 0 0 0 2 2h1a2 2 0 0 0 2-2v-3a2 2 0 0 0-2-2H3z" />
      </svg>
    ),
  },
  {
    index: 3,
    icon: (
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" className="w-7 h-7">
        <circle cx="8" cy="12" r="5" />
        <circle cx="16" cy="12" r="5" />
        <circle cx="8" cy="12" r="1.5" fill="currentColor" stroke="none" />
        <circle cx="16" cy="12" r="1.5" fill="currentColor" stroke="none" />
      </svg>
    ),
  },
];

const FALLBACK_INPUT_LABELS = ["USB-B", "USB-C", "同轴", "光纤", "蓝牙", "IIS"];
const FALLBACK_OUTPUT_LABELS = ["XLR", "RCA", "耳机", "XLR/RCA"];

function withLabels(defs: IOOptionDef[], labels: string[] | undefined, fallback: string[]): IOOption[] {
  return defs.map((def, i) => ({
    ...def,
    label: labels?.[i] ?? fallback[i] ?? String(def.index),
  }));
}

function IOCircleButton({
  option,
  active,
  onSelect,
}: {
  option: IOOption;
  active: boolean;
  onSelect: () => void;
}) {
  return (
    <button onClick={onSelect} className="flex flex-col items-center gap-2.5">
      <div
        className={cn(
          "w-[68px] h-[68px] rounded-full flex items-center justify-center transition-all duration-200",
          active ? "text-black" : "text-white/55 border border-white/10",
        )}
        style={
          active
            ? {
                background: "#00FFF6",
                boxShadow: "0 0 24px rgba(0,255,246,0.55), 0 0 8px rgba(0,255,246,0.3)",
              }
            : { background: "rgba(44,44,46,0.9)" }
        }
      >
        {option.icon}
      </div>
      <span className={cn("text-[13px] font-medium", active ? "text-[#00FFF6]" : "text-white/45")}>
        {option.label}
      </span>
    </button>
  );
}

export default function IOPage() {
  const [, setLocation] = useLocation();
  const { deviceState, setInput, setOutput } = useDevice();

  const sourceText = useMemo((): SourceLocale => {
    const pack = resolveLocalePack(deviceState?.language);
    return (pack.source ?? {}) as SourceLocale;
  }, [deviceState?.language]);

  const inputOptions = useMemo(
    () => withLabels(INPUT_OPTION_DEFS, sourceText.inputOptions, FALLBACK_INPUT_LABELS),
    [sourceText.inputOptions],
  );

  const outputOptions = useMemo(
    () => withLabels(OUTPUT_OPTION_DEFS, sourceText.outputOptions, FALLBACK_OUTPUT_LABELS),
    [sourceText.outputOptions],
  );

  const ioPageTitle = usePageTitleWithConnection(
    sourceText.pageTitle ?? sourceText.label ?? "I/O",
  );
  const inputSectionTitle = sourceText.inputSection ?? "输入";
  const outputSectionTitle = sourceText.outputSection ?? "输出";

  const currentInput = deviceState?.input ?? 1;
  const currentOutput = deviceState?.output ?? 2;

  return (
    <div className="min-h-screen bg-black">
      <div className="page-header">
        <button
          onClick={() => setLocation("/")}
          className="mr-4 text-white/60 active:text-white transition-colors"
        >
          <ChevronLeft size={24} />
        </button>
        <h1 className="flex-1 text-center text-[17px] font-semibold text-white">{ioPageTitle}</h1>
        <div className="w-8" />
      </div>

      <div className="px-4 pb-32 pt-4 space-y-6">
        <div>
          <p className="text-[22px] font-bold text-white mb-4 px-1">{inputSectionTitle}</p>
          <div className="ios-list-group p-5">
            <div className="grid grid-cols-3 gap-x-2 gap-y-6">
              {inputOptions.map((opt) => (
                <IOCircleButton
                  key={opt.index}
                  option={opt}
                  active={currentInput === opt.index}
                  onSelect={() => setInput(opt.index)}
                />
              ))}
            </div>
          </div>
        </div>

        <div>
          <p className="text-[22px] font-bold text-white mb-4 px-1">{outputSectionTitle}</p>
          <div className="ios-list-group p-5">
            <div className="grid grid-cols-3 gap-x-2 gap-y-6">
              {outputOptions.map((opt) => (
                <IOCircleButton
                  key={opt.index}
                  option={opt}
                  active={currentOutput === opt.index}
                  onSelect={() => setOutput(opt.index)}
                />
              ))}
            </div>
          </div>
        </div>
      </div>
      <BottomNav />
    </div>
  );
}