/**
 * 登录态查价表单视觉 chrome（MotherShip / Flock 共用）
 * 主色仅局部 #1890FF，不改全局 primary token
 */
"use client";

import { useEffect, useId, useRef, useState, type ReactNode } from "react";
import { CaretDown, Info, Warning } from "@phosphor-icons/react";

/** 查价表单局部主色 */
export const QUOTE_ACCENT = "#1890FF";
export const QUOTE_ACCENT_HOVER = "#1580E0";
export const QUOTE_TITLE = "#1F2937";
export const QUOTE_SECTION = "#4B5563";
export const QUOTE_REQUIRED = "#EF4444";

export const quoteInputCls =
  "h-10 w-full rounded-md border border-border bg-surface px-3 text-sm text-text-primary transition-colors focus:border-[#1890FF] focus:outline-none focus:ring-2 focus:ring-[#1890FF]/20 disabled:opacity-50";

export const quoteInputErrCls =
  "h-10 w-full rounded-md border border-[#EF4444] bg-surface px-3 text-sm text-text-primary focus:border-[#EF4444] focus:outline-none focus:ring-2 focus:ring-[#EF4444]/20 disabled:opacity-50";

export const quoteCtaCls =
  "inline-flex h-10 min-w-[48px] items-center justify-center gap-2 rounded-md bg-[#1890FF] px-5 text-sm font-semibold text-white transition-colors hover:bg-[#1580E0] focus:outline-none focus:ring-2 focus:ring-[#1890FF]/30 disabled:cursor-not-allowed disabled:opacity-50";

export const quoteAddRowCls =
  "inline-flex h-10 items-center justify-center gap-1.5 rounded-md border border-border bg-surface px-3 text-sm font-medium text-text-primary transition-transform hover:-translate-y-0.5 hover:border-[#1890FF]/40 hover:text-[#1890FF] disabled:cursor-not-allowed disabled:opacity-50 disabled:hover:translate-y-0";

export function QuoteRequiredMark() {
  return (
    <span className="ml-0.5 text-[#EF4444]" aria-hidden>
      *
    </span>
  );
}

/** ● 步骤1 → ○ 步骤2 → ○ 步骤3 */
export function QuoteStepProgress({ current = 1 }: { current?: 1 | 2 | 3 }) {
  const steps = [
    { n: 1 as const, label: "步骤1：填写基础信息" },
    { n: 2 as const, label: "步骤2：确认价格" },
    { n: 3 as const, label: "步骤3：提交" },
  ];
  return (
    <nav
      aria-label="查价进度"
      className="flex flex-wrap items-center gap-x-2 gap-y-1 text-xs text-[#4B5563]"
    >
      {steps.map((s, i) => {
        const active = s.n === current;
        const done = s.n < current;
        return (
          <span key={s.n} className="inline-flex items-center gap-2">
            {i > 0 ? (
              <span className="text-text-disabled" aria-hidden>
                →
              </span>
            ) : null}
            <span
              className={
                active
                  ? "font-semibold text-[#1890FF]"
                  : done
                    ? "text-[#1F2937]"
                    : "text-text-disabled"
              }
            >
              <span aria-hidden>{active || done ? "●" : "○"} </span>
              {s.label}
            </span>
          </span>
        );
      })}
    </nav>
  );
}

export function QuotePageTitle({ children }: { children: ReactNode }) {
  return (
    <h3 className="text-[20px] font-bold leading-snug tracking-tight text-[#1F2937]">
      {children}
    </h3>
  );
}

export function QuoteSectionTitle({ children }: { children: ReactNode }) {
  return (
    <h4 className="overflow-visible border-l-[3px] border-[#1890FF] pl-2 text-[16px] font-semibold leading-6 text-[#4B5563]">
      {children}
    </h4>
  );
}

/** ⓘ 悬停/点击 Tooltip（全程 span，可放在 label/行内；tip 勿传 div/p） */
export function QuoteFieldTooltip({
  tip,
  label = "说明",
  wide = false,
  position = "above",
}: {
  tip: ReactNode;
  label?: string;
  /** 长文案加宽 */
  wide?: boolean;
  position?: "above" | "below";
}) {
  const tipId = useId();
  const [pinned, setPinned] = useState(false);
  const rootRef = useRef<HTMLSpanElement | null>(null);
  const posCls =
    position === "below"
      ? "top-full left-0 mt-1.5 translate-x-0"
      : "bottom-full left-1/2 mb-1.5 -translate-x-1/2";
  const widthCls = wide
    ? "w-[min(22rem,calc(100vw-2rem))]"
    : "w-56";

  useEffect(() => {
    if (!pinned) return;
    const onDoc = (ev: MouseEvent) => {
      const el = rootRef.current;
      if (!el) return;
      if (ev.target instanceof Node && !el.contains(ev.target)) {
        setPinned(false);
      }
    };
    const onKey = (ev: KeyboardEvent) => {
      if (ev.key === "Escape") setPinned(false);
    };
    document.addEventListener("mousedown", onDoc);
    document.addEventListener("keydown", onKey);
    return () => {
      document.removeEventListener("mousedown", onDoc);
      document.removeEventListener("keydown", onKey);
    };
  }, [pinned]);

  return (
    <span ref={rootRef} className="group relative inline-flex align-middle">
      <span
        tabIndex={0}
        role="button"
        aria-expanded={pinned}
        aria-describedby={tipId}
        aria-label={label}
        className="inline-flex cursor-help text-text-disabled outline-none hover:text-[#1890FF] focus-visible:text-[#1890FF]"
        onClick={(e) => {
          e.preventDefault();
          e.stopPropagation();
          setPinned((v) => !v);
        }}
        onKeyDown={(e) => {
          if (e.key === "Enter" || e.key === " ") {
            e.preventDefault();
            e.stopPropagation();
            setPinned((v) => !v);
          }
        }}
      >
        <Info size={14} weight="regular" aria-hidden />
      </span>
      <span
        id={tipId}
        role="tooltip"
        className={[
          "pointer-events-none absolute z-40 max-h-[min(70vh,28rem)] overflow-y-auto rounded-md bg-[#1F2937] px-3 py-2 text-left text-[11px] leading-relaxed text-white shadow-modal",
          pinned
            ? "block"
            : "hidden group-hover:block group-focus-within:block",
          posCls,
          widthCls,
        ].join(" ")}
      >
        {tip}
      </span>
    </span>
  );
}

/** Tooltip 内：加粗标题 + 说明列表（仅用 span，避免嵌套 p/div 破坏外层 p） */
export function QuoteTipDefs({
  intro,
  items,
}: {
  intro?: string;
  items: ReadonlyArray<{ title: string; body: string }>;
}) {
  return (
    <span className="block space-y-2">
      {intro ? (
        <span className="block italic text-white/90">{intro}</span>
      ) : null}
      {items.map((it) => (
        <span key={it.title} className="block">
          <span className="font-semibold">{it.title}</span>
          <span className="text-white/90"> {it.body}</span>
        </span>
      ))}
    </span>
  );
}

/** 可展开「注意事项」 */
export function QuoteNoticeCollapse({
  title = "注意事项",
  children,
  defaultOpen = false,
}: {
  title?: string;
  children: ReactNode;
  defaultOpen?: boolean;
}) {
  const [open, setOpen] = useState(defaultOpen);
  return (
    <div className="rounded-md border border-warning/30 bg-warning/5">
      <button
        type="button"
        onClick={() => setOpen((v) => !v)}
        className="flex w-full items-center justify-between gap-2 px-3 py-2 text-left text-xs font-medium text-[#4B5563]"
      >
        <span className="inline-flex items-center gap-1.5">
          <Warning size={14} className="shrink-0 text-warning" weight="fill" />
          {title}
        </span>
        <CaretDown
          size={14}
          className={[
            "shrink-0 text-text-secondary transition-transform",
            open ? "rotate-180" : "",
          ].join(" ")}
        />
      </button>
      {open ? (
        <div className="border-t border-warning/20 px-3 py-2 text-xs leading-relaxed text-text-secondary">
          {children}
        </div>
      ) : null}
    </div>
  );
}

/** 校验失败浮动提示 */
export function QuoteFloatHint({ message }: { message: string | null }) {
  if (!message) return null;
  return (
    <p
      role="alert"
      className="rounded-md border border-[#EF4444]/30 bg-[#EF4444]/5 px-3 py-2 text-sm text-[#EF4444] shadow-card"
    >
      {message}
    </p>
  );
}