import { View, Text, Button, Input, Image } from '@tarojs/components';
import Taro from '@tarojs/taro';
import { useState, useEffect } from 'react';
import { useTabIndex } from '@/utils/tab';
import { isAuthed, getUser, logout, wxLogin, phoneLogin, bindPhone, sendCode, wxPhoneBind, updateProfile, getMe } from '@/utils/auth';
import { getMyBookings, checkIn, parseIso, BK_STATUS_OPTIONS, BK_TOPIC_OPTIONS, BK_SOURCE_OPTIONS } from '@/utils/booking';
import { getMyAdmission } from '@/utils/parks';
import { API_BASE } from '@/utils/api';
import Skeleton from '@/components/skeleton';
import CountdownBox from '@/components/CountdownBox';
import './index.scss';
import { PageHeader } from '@/components/TopInset';

/* 报名标签：按 auditStatus + event_status 推断 待参加 / 审核中 / 已结束 / 未通过 */
const PHASE_META = {
  pending: { text: '审核中', cls: 'pending' },
  rejected: { text: '未通过', cls: 'rejected' },
  done: { text: '已结束', cls: 'done' },
  upcoming: { text: '待参加', cls: 'upcoming' }
};
const phaseOf = (b) => {
  // 兼容 camelCase(后端新契约) 与 snake_case(旧数据)
  const audit = b.auditStatus !== undefined ? b.auditStatus : b.audit_status;
  const evStatus = b.event_status !== undefined ? b.event_status : b.eventStatus;
  if (audit === 'pending') return PHASE_META.pending;
  if (audit === 'rejected') return PHASE_META.rejected;
  if (evStatus === 'done') return PHASE_META.done;
  return PHASE_META.upcoming;
};
/* 报名状态筛选（对齐活动页 全部/公益/... 的筛选形式） */
const PHASE_FILTERS = [
  { key: 'all', label: '全部' },
  { key: 'upcoming', label: '待参加' },
  { key: 'pending', label: '审核中' },
  { key: 'rejected', label: '未通过' },
  { key: 'done', label: '已结束' }
];

const fmtTime = (iso) => {
  if (!iso) return '';
  const d = new Date(iso);
  const p = (n) => String(n).padStart(2, '0');
  const week = ['日', '一', '二', '三', '四', '五', '六'][d.getDay()];
  return `${d.getFullYear()}-${p(d.getMonth() + 1)}-${p(d.getDate())} ${p(d.getHours())}:${p(d.getMinutes())} 周${week}`;
};

export default function Mine() {
  useTabIndex(4);
  const [user, setUser] = useState(getUser());
  const [bookings, setBookings] = useState([]);
  const [phase, setPhase] = useState('all'); // 报名状态筛选
  const [admission, setAdmission] = useState([]); // 我的园区入驻记录
  const [loaded, setLoaded] = useState(false);
  const [busy, setBusy] = useState(false);
  const [err, setErr] = useState('');

  /* 绑定手机 */
  const [showBind, setShowBind] = useState(false);
  const [phone, setPhone] = useState('');
  const [code, setCode] = useState('');
  const [cd, setCd] = useState(0);
  const [bindDebug, setBindDebug] = useState('');

  /* 手机号登录 */
  const [showPhone, setShowPhone] = useState(false);
  const [pPhone, setPPhone] = useState('');
  const [pCode, setPCode] = useState('');
  const [pCd, setPCd] = useState(0);
  const [pDebug, setPDebug] = useState('');

  const refresh = async () => {
    if (!isAuthed()) { setUser(null); setLoaded(true); return; }
    try {
      const me = await getMe();
      if (me.ok && me.user) setUser(getUser());
    } catch (e) {
      // 401 时 api.js 已清 pine_token：同步清掉本地假登录态，显示未登录卡片
      if (!isAuthed()) { setUser(null); logout(); }
    }
    try {
      const d = await getMyBookings();
      setBookings((d && d.list) || []);
    } catch { /* 保留上次列表，避免重进闪空 */ }
    try {
      const a = await getMyAdmission();
      setAdmission(Array.isArray(a) ? a : []);
    } catch { /* 保留上次 */ }
    finally { setLoaded(true); }
  };
  Taro.useDidShow(() => { refresh(); });

  /* 微信一键登录 */
  const onWxLogin = async () => {
    setErr('');
    setBusy(true);
    try {
      let nickName = '', avatarUrl = '';
      try {
        const { userInfo } = await Taro.getUserProfile({ desc: '用于完善会员资料' });
        nickName = (userInfo && userInfo.nickName) || '';
        avatarUrl = (userInfo && userInfo.avatarUrl) || '';
      } catch { /* 用户拒绝授权昵称，仍可用 code 登录 */ }
      const { code: loginCode } = await Taro.login();
      const data = await wxLogin({ code: loginCode, nickName, avatarUrl });
      setUser(getUser());
      refresh();
    } catch (e) {
      setErr((e && e.message) || '微信登录失败，请重试');
    } finally {
      setBusy(false);
    }
  };

  const sendBind = async () => {
    if (!/^1\d{10}$/.test(phone)) { setErr('请输入正确的 11 位手机号'); return; }
    setErr(''); setBusy(true);
    try {
      const r = await sendCode(phone);
      setBindDebug(`验证码已发送${r.debugCode ? '，演示验证码：' + r.debugCode : ''}`);
      setCd(60);
      const t = setInterval(() => setCd((v) => { if (v <= 1) { clearInterval(t); return 0; } return v - 1; }), 1000);
    } catch (e) { setErr((e && e.message) || '发送失败'); }
    finally { setBusy(false); }
  };

  const doBind = async () => {
    if (!/^1\d{10}$/.test(phone)) { setErr('请输入正确的 11 位手机号'); return; }
    if (!code) { setErr('请输入验证码'); return; }
    setErr(''); setBusy(true);
    try {
      const r = await bindPhone(phone, code);
      if (r.ok) {
        setShowBind(false);
        setPhone(''); setCode(''); setBindDebug('');
        setUser(getUser());
        Taro.showToast({ title: '手机绑定成功', icon: 'success' });
      } else {
        setErr(r.error || '绑定失败');
      }
    } catch (e) { setErr((e && e.message) || '绑定失败'); }
    finally { setBusy(false); }
  };

  /* 微信官方一键绑定手机号（getPhoneNumber 回调） */
  const onWxPhone = async (e) => {
    const detail = (e.detail && e.detail) || {};
    const pcode = detail.code;
    if (!pcode) { Taro.showToast({ title: '已取消授权', icon: 'none' }); return; }
    setBusy(true); setErr('');
    try {
      const r = await wxPhoneBind(pcode);
      if (r.ok) {
        setShowBind(false); setUser(getUser());
        Taro.showToast({ title: '手机绑定成功', icon: 'success' });
      } else {
        Taro.showToast({ title: r.error || '绑定失败', icon: 'none' });
      }
    } catch (ex) { Taro.showToast({ title: (ex && ex.message) || '绑定失败', icon: 'none' }); }
    finally { setBusy(false); }
  };

  const sendPhone = async () => {
    if (!/^1\d{10}$/.test(pPhone)) { setErr('请输入正确的 11 位手机号'); return; }
    setErr(''); setBusy(true);
    try {
      const r = await sendCode(pPhone);
      setPDebug(`验证码已发送${r.debugCode ? '，演示验证码：' + r.debugCode : ''}`);
      setPCd(60);
      const t = setInterval(() => setPCd((v) => { if (v <= 1) { clearInterval(t); return 0; } return v - 1; }), 1000);
    } catch (e) { setErr((e && e.message) || '发送失败'); }
    finally { setBusy(false); }
  };

  const doPhoneLogin = async () => {
    if (!/^1\d{10}$/.test(pPhone)) { setErr('请输入正确的 11 位手机号'); return; }
    if (!pCode) { setErr('请输入验证码'); return; }
    setErr(''); setBusy(true);
    try {
      await phoneLogin(pPhone, pCode);
      setUser(getUser());
      setShowPhone(false);
      refresh();
    } catch (e) { setErr((e && e.message) || '登录失败'); }
    finally { setBusy(false); }
  };

  const onCheckin = async (id) => {
    setErr('');
    try {
      const r = await checkIn(id);
      if (r.ok) {
        Taro.showToast({ title: '签到成功', icon: 'success' });
        refresh();
      } else {
        Taro.showToast({ title: r.error || '签到失败', icon: 'none' });
      }
    } catch (e) {
      Taro.showToast({ title: (e && e.message) || '签到失败', icon: 'none' });
    }
  };

  /* 微信头像昵称填写能力：选头像→上传；填昵称→保存。确保登录后能渲染真实头像/昵称 */
  const [nickDraft, setNickDraft] = useState(() => (getUser() || {}).name || '');

  /* 登录/登出/刷新用户后，昵称草稿随 user.name 同步，避免登出残留或登录后不显示昵称 */
  useEffect(() => { setNickDraft((user && user.name) || ''); }, [user]);

  /* 报名资料（姓名/状态/主题/来源）——个人中心设置，报名自动带入 */
  const [pName, setPName] = useState((user && user.name) || '');
  const [pStatus, setPStatus] = useState((user && user.status) || '');
  const [pTopics, setPTopics] = useState((user && user.topics) || []);
  const [pSource, setPSource] = useState((user && user.source) || '');
  const [saving, setSaving] = useState(false);
  useEffect(() => {
    setPName((user && user.name) || '');
    setPStatus((user && user.status) || '');
    setPTopics((user && user.topics) || []);
    setPSource((user && user.source) || '');
  }, [user]);

  const savePrefs = async () => {
    setErr('');
    if (!pName.trim()) { setErr('请输入姓名'); return; }
    setSaving(true);
    try {
      const r = await updateProfile({ name: pName.trim(), status: pStatus, topics: pTopics, source: pSource });
      if (r.ok) { setUser(getUser()); Taro.showToast({ title: '已保存', icon: 'success' }); }
      else { setErr(r.error || '保存失败'); }
    } catch (e) { setErr((e && e.message) || '保存失败'); }
    finally { setSaving(false); }
  };

  const onChooseAvatar = async (e) => {
    const tempPath = e.detail && e.detail.avatarUrl;
    if (!tempPath) return;
    try {
      const token = Taro.getStorageSync('pine_token') || '';
      const up = await Taro.uploadFile({
        url: `${API_BASE}/api/upload`,
        filePath: tempPath,
        name: 'file',
        formData: { dir: 'avatar' },
        header: { Authorization: `Bearer ${token}` }
      });
      const data = JSON.parse(up.data || '{}');
      if (!data.ok) throw new Error(data.error || '上传失败');
      await updateProfile({ avatar: data.url });
      setUser(getUser());
      Taro.showToast({ title: '头像已更新', icon: 'success' });
    } catch (ex) {
      Taro.showToast({ title: (ex && ex.message) || '头像更新失败', icon: 'none' });
    }
  };

  const onSaveNick = async () => {
    const v = (nickDraft || '').trim();
    if (!v) { setNickDraft((getUser() || {}).name || ''); return; }
    try {
      await updateProfile({ name: v });
      setUser(getUser());
      Taro.showToast({ title: '昵称已更新', icon: 'success' });
    } catch (ex) {
      Taro.showToast({ title: (ex && ex.message) || '昵称更新失败', icon: 'none' });
    }
  };

  const onLogout = () => {
    logout();
    setUser(null);
    setBookings([]);
    setShowBind(false); setShowPhone(false);
    setPhone(''); setCode(''); setBindDebug('');
    setErr('');
    Taro.showToast({ title: '已退出登录', icon: 'none' });
  };

  /* ============ 未登录：登录入口 ============ */
  if (!user || !isAuthed()) {
    return (
      <View className="mine page-in">
      <PageHeader no="MY" title="我的" en="Account" />
        <View className="mine-card login-card">
          <Button className="btn-main wx-btn" loading={busy} onClick={onWxLogin}>微信一键登录</Button>
          <Text className="muted mine-tip">登录后可绑定手机、查看报名场次与活动签到</Text>
          <Text className="link" onClick={() => setShowPhone(!showPhone)}>{showPhone ? '收起手机号登录' : '或用手机号登录'}</Text>
        </View>
        {showPhone && (
          <View className="card">
            <View className="field">
              <Text className="label">手机号</Text>
              <Input value={pPhone} onInput={(e) => setPPhone(e.detail.value)} type="number" maxlength={11} placeholder="11 位手机号" className="input" />
            </View>
            <View className="field">
              <Text className="label">验证码</Text>
              <View className="row">
                <Input value={pCode} onInput={(e) => setPCode(e.detail.value)} type="number" maxlength={6} placeholder="6 位验证码" className="input flex" />
                <Button className="btn-ghost code-btn" disabled={pCd > 0} onClick={sendPhone}>{pCd > 0 ? `${pCd}s` : '获取验证码'}</Button>
              </View>
            </View>
            {pDebug && <Text className="ok-text">{pDebug}</Text>}
            <Button className="btn-main submit" loading={busy} onClick={doPhoneLogin}>{busy ? '登录中…' : '手机号登录'}</Button>
          </View>
        )}
        {err && <Text className="err-text">{err}</Text>}
        <View className="mk-foot">
          <Text className="mk-foot-line">云南省首个由政府主办的免费大学生创业服务平台</Text>
          <Text className="mk-foot-line">云南派音人工智能科技有限公司 && 云南汇浙青创科技有限公司</Text>
          <Text className="mk-foot-line">像素字体 BubbledotICG-FinePos · CC BY 4.0</Text>
        </View>
      </View>
    );
  }

  /* ============ 已登录：资料 + 我的报名 ============ */
  return (
    <View className="mine page-in">
      <PageHeader no="MY" title="我的" en="Account" />

      {/* 资料卡 */}
      <View className="mine-card profile">
        <Button className="avatar-btn" openType="chooseAvatar" onChooseAvatar={onChooseAvatar}>
          {user.avatar ? (
            <Image className="avatar" src={user.avatar} mode="aspectFill" />
          ) : (
            <View className="avatar placeholder">
              <Text>{(user.name || '我').slice(0, 1)}</Text>
            </View>
          )}
        </Button>
        <View className="profile-info">
          <Input className="profile-name" type="nickname" value={nickDraft} onInput={(e) => setNickDraft(e.detail.value)} placeholder="点此填写昵称" />
          <Text className={`phone-tag${user.phoneBound ? ' bound' : ''}`}>
            {user.phoneBound ? (user.phone ? `已绑定 ${user.phone}` : '已绑定手机') : '未绑定手机'}
          </Text>
          {user.account_type_label || user.role ? (
            <Text className="role-tag">{user.account_type_label || user.role}</Text>
          ) : null}
          {nickDraft && nickDraft !== ((user && user.name) || '') && (
            <Button className="btn-ghost save-nick" onClick={onSaveNick}>保存昵称</Button>
          )}
        </View>
        <Button className="btn-ghost logout-btn" onClick={onLogout}>退出</Button>
      </View>

      {/* 下一场活动倒计时（个人信息卡之后显示；取最早的待参加且未开始的报名场次） */}
      {(() => {
        const now = Date.now();
        const upcoming = bookings
          .filter((b) => b.event_status !== 'done' && !b.checkinAt && parseIso(b.eventStart) && parseIso(b.eventStart).getTime() > now)
          .sort((a, b) => parseIso(a.eventStart).getTime() - parseIso(b.eventStart).getTime());
        const nxt = upcoming[0];
        if (!nxt) return null;
        return (
          <View className="card next-card">
            <Text className="next-lbl">您参加的下一场活动</Text>
            <Text className="next-title">{nxt.eventTitle}</Text>
            {nxt.eventStart && <Text className="next-time">{fmtTime(nxt.eventStart)} · 敬请准时到场</Text>}
            <CountdownBox target={nxt.eventStart} />
          </View>
        );
      })()}

      {/* 绑定手机 */}
      {!user.phoneBound && (
        <View className="card bind-card">
          <View className="bind-head">
            <Text className="bind-title">绑定手机</Text>
          </View>
          <Text className="bind-tip">绑定后用于接收活动通知与报名确认</Text>
          {!showBind ? (
            <Button className="btn-main" onClick={() => setShowBind(true)}>去绑定手机</Button>
          ) : (
            <View className="bind-form">
              <Button className="btn-main" openType="getPhoneNumber" onGetPhoneNumber={onWxPhone} loading={busy}>微信一键绑定手机号</Button>
              <Text className="divider">或</Text>
              <View className="field">
                <Text className="label">手机号</Text>
                <Input value={phone} onInput={(e) => setPhone(e.detail.value)} type="number" maxlength={11} placeholder="11 位手机号" className="input" />
              </View>
              <View className="field">
                <Text className="label">验证码</Text>
                <View className="row">
                  <Input value={code} onInput={(e) => setCode(e.detail.value)} type="number" maxlength={6} placeholder="6 位验证码" className="input flex" />
                  <Button className="btn-ghost code-btn" disabled={cd > 0} onClick={sendBind}>{cd > 0 ? `${cd}s` : '获取验证码'}</Button>
                </View>
              </View>
              {bindDebug && <Text className="ok-text">{bindDebug}</Text>}
              <Button className="btn-main submit" loading={busy} onClick={doBind}>{busy ? '提交中…' : '确认绑定'}</Button>
              <Button className="btn-ghost bind-cancel" onClick={() => setShowBind(false)}>取消</Button>
            </View>
          )}
        </View>
      )}

      {/* 我的报名 */}
      <View className="mine-section-head">
        <Text className="mine-no">BOOK</Text>
        <Text className="mine-subtitle">我的报名（{bookings.length}）</Text>
      </View>
      <View className="phase-filters">
        {PHASE_FILTERS.map((f) => (
          <Text key={f.key} className={`phase-tab${phase === f.key ? ' on' : ''}`} onClick={() => setPhase(f.key)}>{f.label}</Text>
        ))}
      </View>
      {(() => {
        const shown = phase === 'all' ? bookings : bookings.filter((b) => phaseOf(b).cls === phase);
        if (!loaded) return <View className="card empty"><Skeleton.Rows n={3} gap={14} /></View>;
        if (shown.length === 0) return (
          <View className="card empty">
            <Text className="muted">{bookings.length === 0 ? '还没有报名记录。' : '该状态下暂无报名。'}</Text>
            <Text className="link" onClick={() => Taro.switchTab({ url: '/pages/booking/index' })}>去看活动 →</Text>
          </View>
        );
        return (
        <View className="bk-list">
          {shown.map((b) => {
            const p = phaseOf(b);
            const ended = b.event_status === 'done';
            const ready = b.can_checkin;
            return (
              <View className="bk-card" key={b.id}>
                <View className="bk-head">
                  <Text className="bk-want">{b.eventTitle || b.want || '报名'}</Text>
                  <Text className={`bk-phase ${p.cls}`}>{p.text}</Text>
                </View>
                {b.eventStart && <Text className="bk-time">场次时间：{fmtTime(b.eventStart)}</Text>}
                <Text className="bk-time">报名时间：{fmtTime(b.createdAt)}</Text>
                <Text className="bk-extra">编号 {b.id} · {b.name || '—'}</Text>
                {b.checkinAt ? (
                  <Text className="bk-checked">已于 {fmtTime(b.checkinAt)} 签到</Text>
                ) : ended ? (
                  <Text className="bk-checked done">本场已结束</Text>
                ) : ready ? (
                  <Button className="btn-main bk-checkin" onClick={() => onCheckin(b.id)}>活动签到</Button>
                ) : (
                  <Text className="bk-checked">未到签到时间，活动开始后即可签到</Text>
                )}
              </View>
            );
          })}
        </View>
        );
      })()}

      {/* 我的接单：扫码接单；任务广场移到 Web / 桌面端 */}
      <View className="mine-section-head">
        <Text className="mine-no">ACCEPT</Text>
        <Text className="mine-subtitle">我的接单</Text>
      </View>
      <View className="card mk-act">
        <Button className="btn-main mk-btn-sm" onClick={() => Taro.navigateTo({ url: '/pages/scan/index' })}>扫码接单</Button>
        <Text className="muted mk-center-hint">任务广场请到 Web 端或桌面端查看</Text>
      </View>

      {/* 算力管理：余额 / API Key / 算力充值（对齐桌面端算力中心） */}
      <View className="mine-section-head">
        <Text className="mine-no">COMPUTE</Text>
        <Text className="mine-subtitle">算力管理</Text>
      </View>
      <View className="card mk-act">
        <Button className="btn-main mk-btn-sm" onClick={() => Taro.navigateTo({ url: '/pages/compute/index' })}>算力中心</Button>
        <Text className="muted mk-center-hint">查看余额与 API Key，支持微信充值算力</Text>
      </View>

      {/* 我的园区：未入驻 → 申请入驻 + OPC认证；已入驻 → 园区信息 + OPC认证 + 转园 */}
      <View className="mine-section-head">
        <Text className="mine-no">PARK</Text>
        <Text className="mine-subtitle">我的园区</Text>
      </View>
      {(() => {
        const ad = admission[0] || {};
        const st = String(ad.status || ad.audit_status || '').toLowerCase();
        const admitted = ['approved', 'verified', 'admitted'].includes(st) || ['已入驻', '通过', 'approved'].includes(ad.status);
        if (!admitted) {
          return (
            <View className="card mk-actions">
              <Text className="muted mk-center-hint">暂未入驻园区，可申请入驻并完成 OPC 认证。</Text>
              <View className="mk-btnrow">
                <Button className="btn-main mk-btn-sm" onClick={() => Taro.navigateTo({ url: '/pages/park-apply/index' })}>申请入驻</Button>
                <Button className="btn-ghost mk-btn-sm" onClick={() => Taro.navigateTo({ url: '/pages/cert-apply/index' })}>OPC 认证</Button>
              </View>
            </View>
          );
        }
        const name = ad.tenant_name || ad.park_name || ad.company_name || ad.company || '已入驻园区';
        return (
          <View className="card mk-park">
            <View className="mk-park-name">{name}</View>
            {ad.region ? <Text className="mk-hint">区域：{ad.region}</Text> : null}
            <View className="mk-btnrow">
              <Button className="btn-ghost mk-btn-sm" onClick={() => Taro.navigateTo({ url: '/pages/cert-apply/index' })}>OPC 认证</Button>
              <Button className="btn-ghost mk-btn-sm" onClick={() => Taro.navigateTo({ url: '/pages/park-transfer/index' })}>转园申请</Button>
            </View>
          </View>
        );
      })()}

      {err && <Text className="err-text">{err}</Text>}
      <View className="mk-foot">
        <Text className="mk-foot-line">云南省首个由政府主办的免费大学生创业服务平台</Text>
        <Text className="mk-foot-line">云南派音人工智能科技有限公司 · 云南汇浙青创科技有限公司</Text>
        <Text className="mk-foot-line">像素字体 BubbledotICG-FinePos · CC BY 4.0</Text>
      </View>
    </View>
  );
}