import { Component, Input, Output, EventEmitter, signal } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';

const API_HOST = 'https://server.fmode.cn';
const APP_ID = 'ncloudmaster';

@Component({
  selector: 'app-login-modal',
  standalone: true,
  imports: [CommonModule, FormsModule],
  template: `
    <div class="login-overlay" *ngIf="visible">
      <div class="login-modal">
        <!-- Logo -->
        <div class="logo-section">
          <div class="logo-icon">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
              <path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z"/>
            </svg>
          </div>
          <h1 class="logo-title">BRAIN<span>HACK</span></h1>
          <p class="logo-subtitle">登录以使用 API 充值服务</p>
        </div>

        <!-- 登录表单 -->
        <form class="login-form" (ngSubmit)="handleSubmit()">
          <!-- 手机号 -->
          <div class="form-group">
            <label for="phone">手机号</label>
            <div class="input-wrapper">
              <svg class="input-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                <path d="M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72 12.84 12.84 0 0 0 .7 2.81 2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45 12.84 12.84 0 0 0 2.81.7A2 2 0 0 1 22 16.92z"/>
              </svg>
              <input
                id="phone"
                name="phone"
                type="tel"
                class="form-input"
                placeholder="请输入手机号"
                [(ngModel)]="phone"
                (ngModelChange)="validatePhone()"
                maxlength="11"
                [disabled]="isLoading()"
              />
            </div>
          </div>

          <!-- 验证码 -->
          <div class="form-group">
            <label for="code">验证码</label>
            <div class="code-input-wrapper">
              <div class="input-wrapper">
                <svg class="input-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                  <path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z"/>
                </svg>
                <input
                  id="code"
                  name="code"
                  type="text"
                  class="form-input code-input"
                  placeholder="请输入验证码"
                  [(ngModel)]="code"
                  maxlength="6"
                  [disabled]="isLoading()"
                />
              </div>
              <button
                type="button"
                class="btn-send-code"
                (click)="sendCode()"
                [disabled]="!canSendCode() || isLoading() || countdown() > 0"
              >
                {{ countdown() > 0 ? countdown() + 's' : '发送验证码' }}
              </button>
            </div>
          </div>

          <!-- 错误提示 -->
          <div class="error-msg" *ngIf="errorMsg">{{errorMsg}}</div>

          <!-- 提交 -->
          <button type="submit" class="btn-submit" [disabled]="!canSubmit() || isLoading()">
            <span *ngIf="isLoading()" class="loading-spinner"></span>
            <span *ngIf="isLoading()">登录中...</span>
            <span *ngIf="!isLoading()">🔐 立即登录</span>
          </button>
        </form>

        <p class="footer-hint">登录即表示同意《用户协议》和《隐私政策》</p>
      </div>
    </div>
  `,
  styles: [`
    .login-overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.85);
      backdrop-filter: blur(12px);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 200;
      animation: fadeIn 0.3s ease-out;
    }
    @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

    .login-modal {
      position: relative;
      background: #0A0A0A;
      border: 1px solid rgba(0,212,255,0.15);
      border-radius: 20px;
      padding: 40px 36px;
      width: 90%;
      max-width: 420px;
      box-shadow: 0 25px 50px rgba(0,0,0,0.5), 0 0 30px rgba(0,212,255,0.08);
      animation: slideUp 0.4s ease-out;
    }
    @keyframes slideUp {
      from { opacity: 0; transform: translateY(30px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .logo-section { text-align: center; margin-bottom: 32px; }
    .logo-icon {
      width: 64px; height: 64px;
      margin: 0 auto 16px;
      background: rgba(0,212,255,0.1);
      border: 1px solid rgba(0,212,255,0.3);
      border-radius: 16px;
      display: flex; align-items: center; justify-content: center;
      color: #00D4FF;
      animation: pulse 2s ease-in-out infinite;
    }
    @keyframes pulse {
      0%,100% { box-shadow: 0 0 0 0 rgba(0,212,255,0.4); }
      50% { box-shadow: 0 0 0 12px rgba(0,212,255,0); }
    }
    .logo-icon svg { width: 32px; height: 32px; }
    .logo-title {
      margin: 0 0 8px 0; font-size: 24px; font-weight: 900;
      color: #fff; letter-spacing: 2px;
    }
    .logo-title span { color: #00D4FF; }
    .logo-subtitle { margin: 0; font-size: 14px; color: #888; }

    .login-form { margin-top: 28px; }
    .form-group { margin-bottom: 20px; }
    .form-group label {
      display: block; margin-bottom: 8px;
      font-weight: 700; font-size: 12px;
      color: rgba(224,224,224,0.9);
      text-transform: uppercase; letter-spacing: 0.5px;
    }

    .input-wrapper { position: relative; display: flex; align-items: center; }
    .input-icon {
      position: absolute; left: 14px; width: 18px; height: 18px;
      color: rgba(224,224,224,0.4); pointer-events: none;
    }
    .form-input {
      width: 100%; padding: 12px 14px 12px 44px;
      background: rgba(20,20,20,0.8);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 10px; font-size: 14px; color: #E0E0E0;
      transition: all 0.2s; box-sizing: border-box;
    }
    .form-input:focus {
      outline: none;
      border-color: rgba(0,212,255,0.5);
      box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
    }
    .form-input::placeholder { color: rgba(224,224,224,0.4); }
    .form-input:disabled { opacity: 0.6; cursor: not-allowed; }

    .code-input-wrapper { display: flex; gap: 10px; }
    .code-input-wrapper .input-wrapper { flex: 1; }
    .code-input { letter-spacing: 4px; font-weight: 700; text-align: center; }

    .btn-send-code {
      padding: 12px 16px;
      background: rgba(0,212,255,0.1);
      border: 1px solid rgba(0,212,255,0.3);
      border-radius: 10px; color: #00D4FF;
      font-size: 13px; font-weight: 700;
      cursor: pointer; transition: all 0.2s;
      white-space: nowrap; min-width: 100px;
    }
    .btn-send-code:hover:not(:disabled) {
      background: rgba(0,212,255,0.2);
      border-color: rgba(0,212,255,0.5);
    }
    .btn-send-code:disabled { opacity: 0.5; cursor: not-allowed; }

    .btn-submit {
      width: 100%; display: flex; align-items: center; justify-content: center;
      gap: 8px; padding: 14px 20px; margin-top: 8px;
      background: linear-gradient(145deg, rgba(0,212,255,0.15), rgba(0,0,0,0.3));
      border: 1px solid rgba(0,212,255,0.4);
      border-radius: 12px; color: #00D4FF;
      font-size: 15px; font-weight: 800;
      cursor: pointer; transition: all 0.2s;
    }
    .btn-submit:hover:not(:disabled) {
      background: linear-gradient(145deg, rgba(0,212,255,0.25), rgba(0,0,0,0.2));
      border-color: rgba(0,212,255,0.6);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0,212,255,0.2);
    }
    .btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

    .loading-spinner {
      width: 16px; height: 16px;
      border: 2px solid rgba(0,212,255,0.3);
      border-top-color: #00D4FF;
      border-radius: 50%;
      animation: spin 0.8s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    .error-msg {
      padding: 10px 14px; margin-bottom: 12px;
      background: rgba(255,77,106,0.1);
      border: 1px solid rgba(255,77,106,0.3);
      border-radius: 8px; color: #FF4D6A; font-size: 13px;
    }

    .footer-hint {
      margin: 20px 0 0 0; text-align: center;
      font-size: 12px; color: rgba(224,224,224,0.4); line-height: 1.5;
    }

    @media (max-width: 480px) {
      .login-modal { padding: 28px 20px; }
    }
  `]
})
export class LoginModalComponent {
  @Input() visible = false;
  @Output() loginSuccess = new EventEmitter<{ userId: string; sessionToken: string }>();
  phone = '';
  code = '';
  errorMsg = '';
  isLoading = signal(false);
  countdown = signal(0);
  countdownTimer: any = null;

  show(): void { this.visible = true; }
  hide(): void { this.visible = false; }

  validatePhone(): void {
    this.phone = this.phone.replace(/\D/g, '').substring(0, 11);
  }

  canSendCode(): boolean {
    return /^1[3-9]\d{9}$/.test(this.phone);
  }

  canSubmit(): boolean {
    return this.canSendCode() && this.code.length >= 4;
  }

  async sendCode(): Promise<void> {
    if (!this.canSendCode() || this.countdown() > 0) return;
    this.isLoading.set(true);
    this.errorMsg = '';

    try {
      const resp = await fetch(`${API_HOST}/api/apig/message`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'X-Parse-Application-Id': APP_ID
        },
        body: JSON.stringify({ mobile: this.phone, company: 'E4KpGvTEto' })
      });
      const result = await resp.json();
      if (result.code !== 1) {
        throw new Error(result.data?.msg || result.error || '发送失败');
      }
      // 开始倒计时
      this.countdown.set(60);
      this.countdownTimer = setInterval(() => {
        const cur = this.countdown();
        if (cur <= 0) {
          clearInterval(this.countdownTimer);
        } else {
          this.countdown.set(cur - 1);
        }
      }, 1000);
      console.log('[Login] 验证码已发送');
    } catch (e: any) {
      console.error('[Login] 发送验证码失败:', e);
      this.errorMsg = '发送失败: ' + (e.message || '未知错误');
    } finally {
      this.isLoading.set(false);
    }
  }

  async handleSubmit(): Promise<void> {
    if (!this.canSubmit() || this.isLoading()) return;
    this.isLoading.set(true);
    this.errorMsg = '';

    try {
      // 1. 调用登录接口获取 session token
      const loginUrl = `${API_HOST}/api/fmode/mobile?mobile=${this.phone}&code=${this.code}`;
      const resp = await fetch(loginUrl, {
        method: 'GET',
        headers: { 'X-Parse-Application-Id': APP_ID }
      });
      const result = await resp.json();
      console.log('[Login] loginMobile result:', result);

      if (result.code !== 200 || !result.data?.token) {
        throw new Error(result.mess || result.message || result.error || '验证码错误或已过期');
      }

      const sessionToken = result.data.token;

      // 2. 用 session token 获取用户信息
      const meResp = await fetch(`${API_HOST}/parse/users/me`, {
        method: 'GET',
        headers: {
          'X-Parse-Application-Id': APP_ID,
          'X-Parse-Session-Token': sessionToken
        }
      });
      const userData = await meResp.json();
      console.log('[Login] 用户信息:', userData);

      if (!userData.objectId) {
        throw new Error('登录成功但无法获取用户信息');
      }

      // 3. 缓存登录态
      localStorage.setItem('apig_session_token', sessionToken);
      localStorage.setItem('apig_user_id', userData.objectId);

      console.log('[Login] userId:', userData.objectId);
      this.loginSuccess.emit({ userId: userData.objectId, sessionToken });
      this.hide();
    } catch (e: any) {
      console.error('[Login] 登录失败:', e);
      this.errorMsg = '登录失败: ' + (e.message || '未知错误');
    } finally {
      this.isLoading.set(false);
    }
  }

  // 检查是否已登录（从 localStorage 恢复）
  async checkExistingLogin(): Promise<{ userId: string; sessionToken: string } | null> {
    try {
      const token = localStorage.getItem('apig_session_token');
      const cachedUserId = localStorage.getItem('apig_user_id');
      if (!token) return null;

      // 验证 token 是否仍然有效
      const resp = await fetch(`${API_HOST}/parse/users/me`, {
        method: 'GET',
        headers: {
          'X-Parse-Application-Id': APP_ID,
          'X-Parse-Session-Token': token
        }
      });
      const userData = await resp.json();
      if (userData.objectId) {
        console.log('[Login] 已有登录用户:', userData.objectId);
        return { userId: userData.objectId, sessionToken: token };
      }
      // token 失效，清除缓存
      localStorage.removeItem('apig_session_token');
      localStorage.removeItem('apig_user_id');
    } catch (e) {
      console.warn('[Login] 检查登录态失败:', e);
    }
    return null;
  }

  ngOnDestroy(): void {
    if (this.countdownTimer) clearInterval(this.countdownTimer);
  }
}