/**
 * 治理台小件 —— 自 `~/coding/JCAI_PRD/governance/_components/Governance.tsx` 第 138–387 行平移。
 *
 * **DOM 结构与类名原样保留**(`g-*` + 色调字典 `t-*`),只做三处必要改写(README 平移规则 1/2/4):
 *   · 去掉 `"use client"`(我们不是 Next);
 *   · 显式导出(原型是同文件私有函数);
 *   · 显式返回类型(编码规范 §11.3 `explicit-module-boundary-types` 不覆盖 apps/web,但同风格保留)。
 *
 * 这些件是**纯呈现**:不取数、不调 API,数据一律由调用方传入。
 */
import { useState, type CSSProperties, type Dispatch, type ReactNode, type SetStateAction } from 'react';
import { Ico } from '@web-shared/Ico.tsx';

export function Chip({ tone = 'mute', ico, children }: { tone?: string; ico?: string; children: ReactNode }) {
  return (
    <span className={`g-chip t-${tone}`}>
      {ico && <Ico name={ico} s={10} />}
      {children}
    </span>
  );
}

export function St({ tone, ico, children }: { tone: string; ico: string; children: ReactNode }) {
  return (
    <span className={`g-st t-${tone}`}>
      <Ico name={ico} s={13} />
      {children}
    </span>
  );
}

export function Ava({ name }: { name: string }) {
  return <span className="g-avatar">{name.slice(0, 1)}</span>;
}

export function Note({ tone, children }: { tone?: 'warn' | 'ok'; children: ReactNode }) {
  return (
    <div className={'g-note' + (tone ? ' ' + tone : '')}>
      <Ico name={tone === 'warn' ? 'alert-triangle' : tone === 'ok' ? 'circle-check' : 'info'} s={14} />
      <span>{children}</span>
    </div>
  );
}

export function Band({ ico, children, extra }: { ico: string; children: ReactNode; extra?: string }) {
  return (
    <div className="g-band">
      <Ico name={ico} s={13} />
      {children}
      {extra && <span className="x">{extra}</span>}
    </div>
  );
}

export function Sec({ ico, title, extra, children }: { ico: string; title: string; extra?: string; children: ReactNode }) {
  return (
    <div className="g-sec">
      <Band ico={ico} {...(extra === undefined ? {} : { extra })}>
        {title}
      </Band>
      {children}
    </div>
  );
}

export function Kpi({
  tone,
  ico,
  label,
  value,
  unit,
  sub,
  dial,
}: {
  tone?: string;
  ico: string;
  label: string;
  value: ReactNode;
  unit?: string;
  sub?: string;
  dial?: number;
}) {
  return (
    <div className={'g-kpi' + (tone ? ' t-' + tone : '')}>
      <span className="g-kpi-l">
        <Ico name={ico} s={12} />
        {label}
      </span>
      {dial !== undefined ? (
        <div style={{ display: 'flex', alignItems: 'center', gap: 12 }}>
          <Dial v={dial} tone={tone ?? 'brand'} />
          <span className="g-kpi-v">
            {value}
            {unit && <small>{unit}</small>}
          </span>
        </div>
      ) : (
        <span className="g-kpi-v">
          {value}
          {unit && <small>{unit}</small>}
        </span>
      )}
      {sub && <span className="g-kpi-s">{sub}</span>}
    </div>
  );
}

export function Dial({ v, tone = 'brand', size = 42 }: { v: number; tone?: string; size?: number }) {
  const r = (size - 6) / 2;
  const c = 2 * Math.PI * r;
  return (
    <span className={`g-dial t-${tone}`}>
      <svg width={size} height={size} viewBox={`0 0 ${size} ${size}`}>
        <circle className="trk" cx={size / 2} cy={size / 2} r={r} strokeWidth={5} />
        <circle
          className="val"
          cx={size / 2}
          cy={size / 2}
          r={r}
          strokeWidth={5}
          stroke="var(--tone)"
          strokeDasharray={`${(c * v) / 100} ${c}`}
        />
      </svg>
    </span>
  );
}

export function Card({ ico, title, extra, children }: { ico: string; title: string; extra?: ReactNode; children: ReactNode }) {
  return (
    <div className="g-card">
      <div className="g-card-h">
        <Ico name={ico} s={14} />
        {title}
        {extra && <span className="x">{extra}</span>}
      </div>
      {children}
    </div>
  );
}

export function Rows({ items }: { items: ReadonlyArray<{ k: string; v: ReactNode; mono?: boolean }> }) {
  return (
    <div className="g-rows">
      {items.map((r, i) => (
        <div key={i}>
          <em>{r.k}</em>
          <b className={r.mono ? 'mono' : ''}>{r.v}</b>
        </div>
      ))}
    </div>
  );
}

export function Dist({ rows }: { rows: ReadonlyArray<{ k: string; v: number; tone: string; label?: string }> }) {
  return (
    <div className="g-dist">
      {rows.map((r) => (
        <div key={r.k} className={`g-dist-row t-${r.tone}`}>
          <span className="g-dist-l">{r.k}</span>
          <span className="g-dist-t">
            <i style={{ width: `${r.v}%` }} />
          </span>
          <b className="g-dist-v">{r.label ?? `${r.v}%`}</b>
        </div>
      ))}
    </div>
  );
}

export function Bars({ data, tone = 'brand' }: { data: readonly number[]; tone?: string }) {
  const max = Math.max(1, ...data);
  return (
    <span className={`g-bars t-${tone}`}>
      {data.map((d, i) => (
        <i key={i} className={i === data.length - 1 ? 'hot' : ''} style={{ height: `${Math.max(8, (d / max) * 100)}%` }} />
      ))}
    </span>
  );
}

export function Load({ n, max, tone = 'brand' }: { n: number; max: number; tone?: string }) {
  return (
    <span className={`g-load t-${tone}`}>
      <span className="g-load-t">
        <i style={{ width: `${Math.min(100, (n / max) * 100)}%` }} />
      </span>
      <b>{n}</b>
    </span>
  );
}

/** 小事实块(预算 / 要素统计等定量并列项) */
export function Facts({ items }: { items: ReadonlyArray<{ k: string; v: string; tone?: string; ratio?: number }> }) {
  return (
    <div className="g-facts">
      {items.map((f, i) => (
        <div key={i} className={'g-fact' + (f.tone ? ' t-' + f.tone : '')}>
          <em>{f.k}</em>
          <b>{f.v}</b>
          {f.ratio !== undefined && (
            <span className="t">
              <i style={{ width: `${Math.min(100, f.ratio * 100)}%` }} />
            </span>
          )}
        </div>
      ))}
    </div>
  );
}

/* ---- 可下钻的清单行:清单只负责导航,动作留给详情页 ---- */

export function NList({ children }: { children: ReactNode }) {
  return <div className="g-nlist">{children}</div>;
}

export function NRow({
  tone = 'mute',
  ico,
  title,
  sub,
  cols,
  right,
  onClick,
}: {
  tone?: string;
  ico: string;
  title: ReactNode;
  sub?: ReactNode;
  cols?: ReadonlyArray<{ k: string; v: ReactNode }>;
  right?: ReactNode;
  onClick: () => void;
}) {
  return (
    <button className={`g-nrow t-${tone}`} onClick={onClick}>
      <span className="g-nrow-i">
        <Ico name={ico} s={15} />
      </span>
      <span className="g-nrow-t">
        <b>{title}</b>
        {sub && <span>{sub}</span>}
      </span>
      {cols && (
        <span className="g-nrow-m">
          {cols.map((c, i) => (
            <span key={i} className="g-nrow-c">
              <em>{c.k}</em>
              <b>{c.v}</b>
            </span>
          ))}
        </span>
      )}
      {right && <span className="g-nrow-r">{right}</span>}
      <span className="g-nrow-x">
        <Ico name="chevron-right" s={16} />
      </span>
    </button>
  );
}

/** 下一级入口(详情页里指向子维度页) */
export function Entry({
  ico,
  tone = 'brand',
  title,
  desc,
  meta,
  onClick,
}: {
  ico: string;
  tone?: string;
  title: string;
  desc: string;
  meta?: ReactNode;
  onClick: () => void;
}) {
  return (
    <button className={`g-entry t-${tone}`} onClick={onClick}>
      <span className="g-entry-i">
        <Ico name={ico} s={17} />
      </span>
      <span className="g-entry-t">
        <b>{title}</b>
        <em>{desc}</em>
      </span>
      {meta && <span className="g-entry-m">{meta}</span>}
      <span className="g-entry-x">
        <Ico name="chevron-right" s={16} />
      </span>
    </button>
  );
}

/* ---- 属性卡:就地填写,不下钻 ---- */

export function Prop({ ico, title, extra, children }: { ico: string; title: string; extra?: ReactNode; children: ReactNode }) {
  return (
    <div className="g-prop">
      <div className="g-prop-h">
        <Ico name={ico} s={13} />
        {title}
        {extra && <span className="x">{extra}</span>}
      </div>
      <div className="g-prop-b">{children}</div>
    </div>
  );
}

export function Field({ k, hint, children }: { k: string; hint?: string; children: ReactNode }) {
  return (
    <div className="g-field">
      <em>
        {k}
        {hint && <i>{hint}</i>}
      </em>
      {children}
    </div>
  );
}

export function Seg({
  value,
  options,
  onPick,
}: {
  value: string;
  options: ReadonlyArray<{ k: string; label: string }>;
  onPick: (k: string) => void;
}) {
  return (
    <div className="g-seg">
      {options.map((o) => (
        <button key={o.k} className={'g-seg-b' + (value === o.k ? ' on' : '')} onClick={() => onPick(o.k)}>
          {o.label}
        </button>
      ))}
    </div>
  );
}

export function ListEdit({
  items,
  placeholder,
  onChange,
}: {
  items: readonly string[];
  placeholder: string;
  onChange: (v: string[]) => void;
}) {
  return (
    <div className="g-listedit">
      {items.map((it, i) => (
        <div key={i} className="g-le-row">
          <input
            className="g-input"
            value={it}
            placeholder={placeholder}
            onChange={(e) => onChange(items.map((x, j) => (j === i ? e.target.value : x)))}
          />
          <button className="g-le-x" title="删除该项" onClick={() => onChange(items.filter((_, j) => j !== i))}>
            <Ico name="trash-2" s={13} />
          </button>
        </div>
      ))}
      {items.length === 0 && <span className="g-le-e">未声明</span>}
      <button className="g-le-add" onClick={() => onChange([...items, ''])}>
        <Ico name="plus" s={12} />
        添加
      </button>
    </div>
  );
}

/* ---- 就地确认带:影响预览三必答,不弹窗、不遮挡 ---- */

export type AskSpec = {
  title: string;
  note?: ReactNode;
  /** 三必答 —— 治理动作在按下之前就把后果讲清楚 */
  impact: { who: string; undo: string; when: string };
  okLabel: string;
  onOk: () => void;
};

export type ActSpec = {
  label: string;
  ico?: string;
  primary?: boolean;
  danger?: boolean;
  disabled?: boolean;
  ask?: AskSpec;
  onClick?: () => void;
};

export function AskBand({ spec, danger, onCancel }: { spec: AskSpec; danger?: boolean; onCancel: () => void }) {
  return (
    <div className={'g-ask t-' + (danger ? 'danger' : 'warn')}>
      <div className="g-ask-h">
        <Ico name={danger ? 'alert-triangle' : 'shield-check'} s={15} />
        {spec.title}
      </div>
      {spec.note}
      <div className="g-impact">
        <div>
          <em>影响谁</em>
          <b>{spec.impact.who}</b>
        </div>
        <div>
          <em>可否撤销</em>
          <b>{spec.impact.undo}</b>
        </div>
        <div>
          <em>何时生效</em>
          <b>{spec.impact.when}</b>
        </div>
      </div>
      <div className="g-ask-a">
        <button className="g-btn" onClick={onCancel}>
          取消
        </button>
        <button
          className={'g-btn ' + (danger ? 'danger' : 'primary')}
          onClick={() => {
            spec.onOk();
            onCancel();
          }}
        >
          {spec.okLabel}
        </button>
      </div>
    </div>
  );
}

export function Acts({ items, align = 'start' }: { items: readonly ActSpec[]; align?: 'start' | 'end' }) {
  const [armed, setArmed] = useState<number | null>(null);
  const a = armed !== null ? items[armed] : null;
  return (
    <div className="g-acts">
      <div className="g-acts-r" style={{ justifyContent: align === 'end' ? 'flex-end' : 'flex-start' }}>
        {items.map((it, i) => (
          <button
            key={i}
            disabled={it.disabled === true}
            className={
              'g-btn' + (it.primary ? ' primary' : '') + (it.danger ? ' danger' : '') + (armed === i ? ' armed' : '')
            }
            onClick={() => (it.ask ? setArmed(armed === i ? null : i) : it.onClick?.())}
          >
            {it.ico && <Ico name={it.ico} s={13} />}
            {it.label}
          </button>
        ))}
      </div>
      {a?.ask && <AskBand spec={a.ask} {...(a.danger === undefined ? {} : { danger: a.danger })} onCancel={() => setArmed(null)} />}
    </div>
  );
}

/* ---- 详情页头 ---- */

export function PageHead({
  ico,
  tone = 'brand',
  kicker,
  title,
  chips,
  desc,
  acts,
}: {
  ico: string;
  tone?: string;
  kicker: string;
  title: string;
  chips?: ReactNode;
  desc?: ReactNode;
  acts?: readonly ActSpec[];
}) {
  const [armed, setArmed] = useState<number | null>(null);
  const a = acts && armed !== null ? acts[armed] : null;
  return (
    <div className="g-dhwrap">
      <div className={`g-dh t-${tone}`}>
        <span className="g-dh-i">
          <Ico name={ico} s={20} />
        </span>
        <div className="g-dh-t">
          <em>{kicker}</em>
          <h2>{title}</h2>
          {chips && <div className="chips">{chips}</div>}
          {desc && <p>{desc}</p>}
        </div>
        {acts && (
          <div className="g-dh-a">
            {acts.map((it, i) => (
              <button
                key={i}
                className={
                  'g-btn' + (it.primary ? ' primary' : '') + (it.danger ? ' danger' : '') + (armed === i ? ' armed' : '')
                }
                onClick={() => (it.ask ? setArmed(armed === i ? null : i) : it.onClick?.())}
              >
                {it.ico && <Ico name={it.ico} s={13} />}
                {it.label}
              </button>
            ))}
          </div>
        )}
      </div>
      {a?.ask && <AskBand spec={a.ask} {...(a.danger === undefined ? {} : { danger: a.danger })} onCancel={() => setArmed(null)} />}
    </div>
  );
}

/** 需处置卡:一条偏差 + 就地处置 */
export function Todo({
  tone = 'danger',
  ico,
  title,
  desc,
  acts,
}: {
  tone?: string;
  ico: string;
  title: string;
  desc: string;
  acts: readonly ActSpec[];
}) {
  return (
    <div className={`g-todo-card t-${tone}`}>
      <div className="g-todo-row">
        <span className="g-todo-i">
          <Ico name={ico} s={15} />
        </span>
        <span className="g-todo-t">
          <b>{title}</b>
          <span>{desc}</span>
        </span>
      </div>
      <Acts items={acts} align="end" />
    </div>
  );
}

export function Clear({ children }: { children: ReactNode }) {
  return (
    <div className="g-clear">
      <Ico name="circle-check" s={16} />
      {children}
    </div>
  );
}

/** 区首页/详情页共用的板栅 */
export function Board({ children, style }: { children: ReactNode; style?: CSSProperties }) {
  return (
    <div className="g-board" {...(style === undefined ? {} : { style })}>
      {children}
    </div>
  );
}

export function Kpis({ children }: { children: ReactNode }) {
  return <div className="g-kpis">{children}</div>;
}

export function Todos({ children }: { children: ReactNode }) {
  return <div className="g-todo">{children}</div>;
}

export type Armed = [number | null, Dispatch<SetStateAction<number | null>>];

/**
 * 取数态:载入 / 无权 / 出错 —— 三种都得**说出来**。
 *
 * 治理台尤其不能把「无权查看」画成空清单:那会让人误以为系统里什么都没有。
 * 权限不足按岗位说明缺哪一项,而不是笼统「失败」。
 */
export function QueryGate({
  query,
  children,
}: {
  query: { isPending: boolean; isError: boolean; error: unknown };
  children: ReactNode;
}) {
  if (query.isPending) {
    return (
      <div className="g-clear">
        <Ico name="clock" s={16} />
        载入中…
      </div>
    );
  }
  if (query.isError) {
    const error = query.error as { status?: number; message?: string } | undefined;
    const forbidden = error?.status === 403;
    return (
      <Note tone="warn">
        {forbidden ? (
          <>
            <b>无权查看</b> —— {error?.message ?? ''}。权限按岗位授予:客体三类 × 动作三种;
            换岗即换权,需要请找有该治理功能授权的岗位开通。
          </>
        ) : (
          <>
            <b>取数失败</b> —— {error?.message ?? '未知错误'}
          </>
        )}
      </Note>
    );
  }
  return <>{children}</>;
}