import { useState, useEffect } from 'react';
import { Typography, Space, Divider, Badge, Tooltip } from 'antd';
import { GithubOutlined, CopyrightOutlined, HeartFilled, ClockCircleOutlined } from '@ant-design/icons';
import { VERSION_INFO, getVersionString } from '../config/version';
import { checkLatestVersion } from '../services/versionService';

const { Text, Link } = Typography;

export default function AppFooter() {
  const isMobile = window.innerWidth <= 768;
  const [hasUpdate, setHasUpdate] = useState(false);
  const [latestVersion, setLatestVersion] = useState('');
  const [releaseUrl, setReleaseUrl] = useState('');

  useEffect(() => {
    // 检查版本更新（每次都重新检查）
    const checkVersion = async () => {
      console.log('[页脚组件] 开始版本检查流程...');
      console.log('[页脚组件] 开始从 GitHub 检查版本...');
      
      try {
        const result = await checkLatestVersion();
        console.log('[页脚组件] 版本检查结果:', result);
        console.log('[页脚组件] 是否显示红点:', result.hasUpdate);
        
        setHasUpdate(result.hasUpdate);
        setLatestVersion(result.latestVersion);
        setReleaseUrl(result.releaseUrl);
      } catch (error) {
        console.error('[页脚组件] 版本检查失败:', error);
      }
    };

    // 延迟3秒后检查，避免影响首次加载
    console.log('[页脚组件] 将在3秒后开始版本检查');
    const timer = setTimeout(checkVersion, 3000);
    return () => {
      console.log('[页脚组件] 清理定时器');
      clearTimeout(timer);
    };
  }, []);

  // 点击版本号查看更新
  const handleVersionClick = () => {
    console.log('[页脚组件] 版本号被点击, hasUpdate:', hasUpdate, 'releaseUrl:', releaseUrl);
    
    if (hasUpdate && releaseUrl) {
      console.log('[页脚组件] 打开发布页面:', releaseUrl);
      window.open(releaseUrl, '_blank');
    } else {
      console.log('[页脚组件] 无更新或无发布链接，不执行跳转');
    }
  };

  return (
    <div
      style={{
        position: 'fixed',
        bottom: 0,
        left: 0,
        right: 0,
        backdropFilter: 'blur(20px) saturate(180%)',
        WebkitBackdropFilter: 'blur(20px) saturate(180%)',
        borderTop: '1px solid rgba(255, 255, 255, 0.2)',
        padding: isMobile ? '8px 12px' : '10px 16px',
        zIndex: 100,
        boxShadow: '0 -4px 16px rgba(0, 0, 0, 0.1), 0 -1px 4px rgba(0, 0, 0, 0.06)',
      }}
    >
      <div
        style={{
          maxWidth: 1400,
          margin: '0 auto',
          textAlign: 'center',
        }}
      >
        {isMobile ? (
          // 移动端：紧凑单行布局
          <div style={{
            display: 'flex',
            justifyContent: 'center',
            alignItems: 'center',
            gap: 8,
            flexWrap: 'wrap'
          }}>
            <Badge dot={hasUpdate} offset={[-8, 2]}>
              <Tooltip title={hasUpdate ? `发现新版本 v${latestVersion}，点击查看` : '当前版本'}>
                <Text
                  onClick={handleVersionClick}
                  style={{
                    fontSize: 11,
                    display: 'flex',
                    alignItems: 'center',
                    gap: 4,
                    color: '#fff',
                    textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
                    cursor: hasUpdate ? 'pointer' : 'default',
                  }}
                >
                  <strong style={{ color: '#fff' }}>{VERSION_INFO.projectName}</strong>
                  <span>{getVersionString()}</span>
                </Text>
              </Tooltip>
            </Badge>
            <Divider type="vertical" style={{ margin: '0 4px', borderColor: 'rgba(255, 255, 255, 0.3)' }} />
            <Link
              href={VERSION_INFO.githubUrl}
              target="_blank"
              rel="noopener noreferrer"
              style={{
                fontSize: 11,
                display: 'flex',
                alignItems: 'center',
                gap: 4,
                color: '#fff',
                textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
              }}
            >
              <GithubOutlined style={{ fontSize: 12 }} />
            </Link>
            <Text
              style={{
                fontSize: 10,
                color: 'rgba(255, 255, 255, 0.8)',
                textShadow: '0 1px 2px rgba(0, 0, 0, 0.3)',
              }}
            >
              <ClockCircleOutlined style={{ fontSize: 10, marginRight: 4 }} />
              {VERSION_INFO.buildTime}
            </Text>
          </div>
        ) : (
          // PC端：完整布局
          <Space
            direction="horizontal"
            size={12}
            split={<Divider type="vertical" style={{ borderColor: 'rgba(255, 255, 255, 0.3)' }} />}
            style={{
              display: 'flex',
              justifyContent: 'center',
              alignItems: 'center'
            }}
          >
            {/* 版本信息 */}
            <Badge dot={hasUpdate} offset={[-8, 2]}>
              <Tooltip title={hasUpdate ? `发现新版本 v${latestVersion}，点击查看` : '当前版本'}>
                <Text
                  onClick={handleVersionClick}
                  style={{
                    fontSize: 12,
                    display: 'flex',
                    alignItems: 'center',
                    gap: 6,
                    color: '#fff',
                    textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
                    cursor: hasUpdate ? 'pointer' : 'default',
                    transition: 'all 0.3s',
                  }}
                  onMouseEnter={(e) => {
                    if (hasUpdate) {
                      e.currentTarget.style.transform = 'scale(1.05)';
                    }
                  }}
                  onMouseLeave={(e) => {
                    if (hasUpdate) {
                      e.currentTarget.style.transform = 'scale(1)';
                    }
                  }}
                >
                  <strong style={{ color: '#fff' }}>{VERSION_INFO.projectName}</strong>
                  <span>{getVersionString()}</span>
                </Text>
              </Tooltip>
            </Badge>

            {/* GitHub 链接 */}
            <Link
              href={VERSION_INFO.githubUrl}
              target="_blank"
              rel="noopener noreferrer"
              style={{
                fontSize: 12,
                display: 'flex',
                alignItems: 'center',
                gap: 6,
                color: '#fff',
                textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
              }}
            >
              <GithubOutlined style={{ fontSize: 13 }} />
              <span>GitHub</span>
            </Link>

            {/* LinuxDO 社区 */}
            <Link
              href={VERSION_INFO.linuxDoUrl}
              target="_blank"
              rel="noopener noreferrer"
              style={{
                fontSize: 12,
                color: '#fff',
                textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
              }}
            >
              LinuxDO 社区
            </Link>

            {/* 许可证 */}
            <Link
              href={VERSION_INFO.licenseUrl}
              target="_blank"
              rel="noopener noreferrer"
              style={{
                fontSize: 12,
                display: 'flex',
                alignItems: 'center',
                gap: 6,
                color: '#fff',
                textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
              }}
            >
              <CopyrightOutlined style={{ fontSize: 11 }} />
              <span>{VERSION_INFO.license}</span>
            </Link>

            {/* 更新时间 */}
            <Text
              style={{
                fontSize: 12,
                display: 'flex',
                alignItems: 'center',
                gap: 4,
                color: 'rgba(255, 255, 255, 0.9)',
                textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
              }}
            >
              <ClockCircleOutlined style={{ fontSize: 12 }} />
              <span>{VERSION_INFO.buildTime}</span>
            </Text>

            {/* 致谢信息 */}
            <Text
              style={{
                fontSize: 12,
                display: 'flex',
                alignItems: 'center',
                gap: 4,
                color: '#fff',
                textShadow: '0 1px 3px rgba(0, 0, 0, 0.3)',
              }}
            >
              <span>Made with</span>
              <HeartFilled style={{ color: '#ff4d4f', fontSize: 11 }} />
              <span>by {VERSION_INFO.author}</span>
            </Text>
          </Space>
        )}
      </div>
    </div>
  );
}