/* 凭据库视图：登录密码 + 2FA 动态码
 *
 * 数据来自 credentials 表（登录凭据唯一事实源）：既包含平台账号迁移/联动过来的
 * 条目，也包含自行录入的普通网站。列表以「取用快」为先：搜索、一键复制、
 * 展开看动态码；移动端单列卡片，桌面端同布局（避免横向溢出）。
 */
const VaultView = {
  template: `
  <div class="space-y-3">
    <div class="text-xs text-slate-500 bg-slate-50 dark:bg-slate-800/50 border border-slate-200 dark:border-slate-800 rounded-lg px-3 py-2">
      🔐 凭据库 = 各站点的登录方式（用户名 / 密码 / 2FA / 授权登录）。平台账号的登录密码也统一存在这里，只维护一份，不会两头改。
    </div>

    <div class="flex gap-2 items-center">
      <input v-model="store.vaultSearch" @input="reload" placeholder="搜索站点/用户名/备注…"
             class="flex-1 min-w-0 text-sm px-3 py-1.5 rounded-lg border border-slate-300 dark:border-slate-700 bg-white dark:bg-slate-900">
      <button @click="toggleOtpFilter" class="text-sm px-3 py-1.5 rounded-lg border whitespace-nowrap shrink-0"
              :class="store.vaultOtpOnly ? 'border-blue-500 bg-blue-500/10 text-blue-600 dark:text-blue-400' : 'border-slate-300 dark:border-slate-700 text-slate-600 dark:text-slate-400'">🛡 2FA</button>
    </div>

    <p v-if="!store.credentials.length" class="text-xs text-slate-400 py-8 text-center">
      {{ store.vaultSearch || store.vaultOtpOnly ? '没有匹配的凭据' : '暂无凭据。点右上「+ 新增」录入网站账号；平台账号填过登录密码的会自动出现在这里。' }}
    </p>

    <div class="space-y-2">
      <div v-for="c in store.credentials" :key="c.id"
           class="bg-white dark:bg-slate-900 rounded-xl border border-slate-200 dark:border-slate-800 overflow-hidden">
        <!-- 主行 -->
        <div class="px-3 py-2.5 flex items-center gap-2">
          <button @click="toggle(c)" class="text-slate-400 text-xs w-4 shrink-0">{{ expanded[c.id] ? '▾' : '▸' }}</button>
          <div class="flex-1 min-w-0">
            <div class="text-sm font-medium truncate">
              {{ c.site }}
              <span v-if="c.has_otp" class="text-[10px] px-1 py-0.5 ml-1 rounded bg-blue-500/10 text-blue-600 dark:text-blue-400 align-middle">2FA</span>
              <span v-if="c.duplicate" class="text-[10px] px-1 py-0.5 ml-1 rounded bg-amber-500/10 text-amber-600 dark:text-amber-400 align-middle"
                    title="同站点同用户名已有多条，确认是否重复录入">重复?</span>
            </div>
            <div class="text-xs text-slate-400 truncate">
              <span v-if="c.username">{{ c.username }}</span><span v-else class="italic">未填用户名</span>
              <span v-if="c.login_type==='oauth'" class="ml-1 text-emerald-600 dark:text-emerald-400">· {{ c.oauth_provider || '授权' }} 登录</span>
              <span v-else-if="c.login_type==='other'" class="ml-1">· 其他登录方式</span>
              <span v-if="c.account_name" class="ml-1">· 平台账号</span>
            </div>
          </div>
          <button v-if="c.has_otp" @click="toggle(c, true)"
                  class="text-xs px-2 py-1 rounded-lg bg-blue-600 text-white shrink-0">验证码</button>
          <button v-if="c.has_password" @click="copyPwd(c)"
                  class="text-xs px-2 py-1 rounded-lg border border-slate-200 dark:border-slate-700 text-slate-600 dark:text-slate-300 shrink-0">复制</button>
        </div>

        <!-- 展开详情 -->
        <div v-if="expanded[c.id]" class="px-3 pb-3 pt-2 border-t border-slate-100 dark:border-slate-800 space-y-2">
          <!-- 2FA 动态码：服务端生成，本地倒计时，归零自动刷新 -->
          <div v-if="c.has_otp" class="flex items-center gap-3 bg-blue-50 dark:bg-blue-900/20 rounded-lg px-3 py-2">
            <div class="font-mono text-2xl tracking-widest text-blue-700 dark:text-blue-300 shrink-0">{{ otpOf(c).code || '······' }}</div>
            <div class="min-w-0 flex-1">
              <div class="text-[11px] text-slate-500 dark:text-slate-400">{{ otpOf(c).expiresIn }}s 后刷新</div>
              <div class="h-1 bg-slate-200 dark:bg-slate-700 rounded mt-1 overflow-hidden">
                <div class="h-full bg-blue-500 transition-all duration-1000 ease-linear"
                     :style="{ width: Math.max(0, otpOf(c).expiresIn) / 30 * 100 + '%' }"></div>
              </div>
            </div>
            <button @click="copyOtp(c)" class="text-xs px-2 py-1 rounded-lg border border-blue-300 dark:border-blue-700 text-blue-600 dark:text-blue-400 shrink-0">复制</button>
          </div>

          <div class="text-xs text-slate-500 space-y-1">
            <div v-if="c.url"><a :href="c.url" target="_blank" rel="noopener" class="text-blue-600 dark:text-blue-400 hover:underline break-all">登录页 ↗</a></div>
            <div v-if="c.note" class="whitespace-pre-wrap break-words">{{ c.note }}</div>
            <div v-if="c.login_type==='oauth'" class="text-slate-400">授权登录（{{ c.oauth_provider || '未记录来源' }}），本站无独立密码</div>
            <div v-if="c.account_name" class="text-slate-400">关联平台账号：{{ c.account_name }}</div>
            <div class="text-slate-300 dark:text-slate-600">更新于 {{ fmtTime(c.updated_at) }}</div>
          </div>

          <div class="flex gap-4 text-xs flex-wrap">
            <button v-if="c.has_password" @click="reveal(c)" class="text-amber-600 dark:text-amber-400">查看密码</button>
            <button @click="edit(c)" class="text-blue-600 dark:text-blue-400">编辑</button>
            <button v-if="c.has_otp" @click="unbindOtp(c)" class="text-slate-500 dark:text-slate-400">解绑 2FA</button>
            <button @click="del(c)" class="text-red-600 dark:text-red-400">删除</button>
          </div>
        </div>
      </div>
    </div>

    <!-- 密码明文弹窗：8 秒自动关闭，减少明文暴露时间 -->
    <div v-if="pwd.show" class="fixed inset-0 bg-black/50 z-[70] flex items-center justify-center p-4" @click.self="closePwd">
      <div class="bg-white dark:bg-slate-800 rounded-xl w-full max-w-xs p-5 shadow-xl">
        <h4 class="font-semibold text-sm mb-3">🔑 {{ pwd.site }}</h4>
        <div class="space-y-2 text-sm">
          <div v-if="pwd.username" class="flex justify-between items-center gap-2">
            <span class="text-slate-400 text-xs shrink-0">用户名</span>
            <span class="font-mono truncate">{{ pwd.username }}</span>
          </div>
          <div class="flex justify-between items-center gap-2">
            <span class="text-slate-400 text-xs shrink-0">密码</span>
            <span class="font-mono break-all">{{ pwd.password }}</span>
          </div>
        </div>
        <div class="flex gap-2 mt-4">
          <button @click="copyText(pwd.password, '密码')" class="flex-1 py-1.5 rounded-lg bg-blue-600 text-white text-xs">复制密码</button>
          <button @click="closePwd" class="px-3 py-1.5 rounded-lg border border-slate-200 dark:border-slate-700 text-xs">关闭</button>
        </div>
        <p class="text-[10px] text-slate-400 mt-2 text-center">{{ pwd.countdown }}s 后自动关闭</p>
      </div>
    </div>
  </div>`,
  setup() {
    const expanded = Vue.reactive({});
    const pwd = Vue.reactive({ show: false, site: '', username: '', password: '', countdown: 0, _timer: null });

    function otpOf(c) {
      return otpState[c.id] || { code: '', expiresIn: 0, loading: false };
    }
    // 展开即拉动态码并开始倒计时；收起时停掉定时器
    function toggle(c, forceOpen) {
      const open = forceOpen ? true : !expanded[c.id];
      expanded[c.id] = open;
      if (!c.has_otp) return;
      if (open && !otpState[c.id]) fetchOtp(c.id);
      if (!open) stopOtp(c.id);
    }
    async function reveal(c) {
      store.error = '';
      try {
        const r = await Api.get('/credentials/' + c.id + '/password');
        pwd.site = c.site;
        pwd.username = r.username || '';
        pwd.password = r.password;
        pwd.show = true;
        if (pwd._timer) clearInterval(pwd._timer);
        pwd.countdown = 8;
        pwd._timer = setInterval(() => {
          pwd.countdown--;
          if (pwd.countdown <= 0) closePwd();
        }, 1000);
      } catch (e) { store.error = e.message; }
    }
    function closePwd() {
      pwd.show = false;
      pwd.password = '';
      if (pwd._timer) { clearInterval(pwd._timer); pwd._timer = null; }
    }
    function copyOtp(c) {
      const s = otpState[c.id];
      if (s && s.code) copyText(s.code, '验证码');
    }
    function fmtTime(iso) {
      if (!iso) return '';
      return new Date(iso).toLocaleString('zh-CN', { month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit' });
    }
    // 搜索防抖：300ms 内连续输入只发一次请求
    let searchTimer = null;
    function debouncedReload() {
      if (searchTimer) clearTimeout(searchTimer);
      searchTimer = setTimeout(() => { loadCredentials(); }, 300);
    }
    function toggleOtpFilter() {
      store.vaultOtpOnly = !store.vaultOtpOnly;
      loadCredentials();
    }
    // 离开视图时停掉全部倒计时，避免后台定时器泄漏
    Vue.onUnmounted(() => { stopAllOtp(); closePwd(); });
    return {
      store, Fmt, expanded, pwd, otpOf, toggle, reveal, closePwd, copyOtp, fmtTime,
      reload: debouncedReload, toggleOtpFilter, copyText,
      copyPwd: copyCredentialPassword, edit: openCredentialEdit,
      del: deleteCredential, unbindOtp: unbindCredentialOtp,
    };
  },
};