首页增加tmdb热门轮播图

2025-12-27 11:37:43 +08:00
parent e071d6fff2
commit c961d0999c
4 changed files with 466 additions and 1 deletions
@@ -0,0 +1,296 @@
+'use client';
+
+import { useEffect, useState, useCallback, useRef } from 'react';
+import Image from 'next/image';
+import { useRouter } from 'next/navigation';
+import { getTMDBImageUrl, getGenreNames, type TMDBItem } from '@/lib/tmdb.client';
+import { ChevronLeft, ChevronRight, Play } from 'lucide-react';
+
+interface BannerCarouselProps {
+  autoPlayInterval?: number; // 自动播放间隔（毫秒）
+}
+
+export default function BannerCarousel({ autoPlayInterval = 5000 }: BannerCarouselProps) {
+  const router = useRouter();
+  const [items, setItems] = useState<TMDBItem[]>([]);
+  const [currentIndex, setCurrentIndex] = useState(0);
+  const [isLoading, setIsLoading] = useState(true);
+  const [isPaused, setIsPaused] = useState(false);
+  const [skipNextAutoPlay, setSkipNextAutoPlay] = useState(false); // 跳过下一次自动播放
+  const touchStartX = useRef(0);
+  const touchEndX = useRef(0);
+  const isManualChange = useRef(false); // 标记是否为手动切换
+
+  // LocalStorage 缓存配置
+  const LOCALSTORAGE_KEY = 'tmdb_trending_cache';
+  const LOCALSTORAGE_DURATION = 24 * 60 * 60 * 1000; // 1天
+
+  // 跳转到播放页面
+  const handlePlay = (title: string) => {
+    router.push(`/play?title=${encodeURIComponent(title)}`);
+  };
+
+  // 获取热门内容
+  useEffect(() => {
+    const fetchTrending = async () => {
+      try {
+        // 先检查 localStorage 缓存
+        const cached = localStorage.getItem(LOCALSTORAGE_KEY);
+        if (cached) {
+          try {
+            const { data, timestamp } = JSON.parse(cached);
+            const now = Date.now();
+            
+            // 如果缓存未过期，直接使用
+            if (now - timestamp < LOCALSTORAGE_DURATION) {
+              setItems(data);
+              setIsLoading(false);
+              return;
+            }
+          } catch (e) {
+            // 缓存解析失败，继续请求 API
+            console.error('解析缓存数据失败:', e);
+          }
+        }
+
+        // 从 API 获取数据
+        const response = await fetch('/api/tmdb/trending');
+        const result = await response.json();
+        if (result.code === 200 && result.list.length > 0) {
+          setItems(result.list);
+          
+          // 保存到 localStorage
+          try {
+            localStorage.setItem(LOCALSTORAGE_KEY, JSON.stringify({
+              data: result.list,
+              timestamp: Date.now()
+            }));
+          } catch (e) {
+            // localStorage 可能已满，忽略错误
+            console.error('保存到 localStorage 失败:', e);
+          }
+        }
+      } catch (error) {
+        console.error('获取热门内容失败:', error);
+      } finally {
+        setIsLoading(false);
+      }
+    };
+
+    fetchTrending();
+  }, [LOCALSTORAGE_KEY, LOCALSTORAGE_DURATION]);
+
+  // 自动播放
+  useEffect(() => {
+    if (!items.length || isPaused) return;
+
+    const timer = setInterval(() => {
+      // 如果设置了跳过标志，跳过这一次自动播放
+      if (skipNextAutoPlay) {
+        setSkipNextAutoPlay(false);
+        return;
+      }
+      
+      setCurrentIndex((prev) => (prev + 1) % items.length);
+    }, autoPlayInterval);
+
+    return () => clearInterval(timer);
+  }, [items.length, isPaused, autoPlayInterval, skipNextAutoPlay]);
+
+  const goToPrevious = useCallback(() => {
+    isManualChange.current = true;
+    setSkipNextAutoPlay(true);
+    setCurrentIndex((prev) => (prev - 1 + items.length) % items.length);
+    setTimeout(() => {
+      isManualChange.current = false;
+    }, 100);
+  }, [items.length]);
+
+  const goToNext = useCallback(() => {
+    isManualChange.current = true;
+    setSkipNextAutoPlay(true);
+    setCurrentIndex((prev) => (prev + 1) % items.length);
+    setTimeout(() => {
+      isManualChange.current = false;
+    }, 100);
+  }, [items.length]);
+
+  const goToSlide = useCallback((index: number) => {
+    isManualChange.current = true;
+    setSkipNextAutoPlay(true);
+    setCurrentIndex(index);
+    setTimeout(() => {
+      isManualChange.current = false;
+    }, 100);
+  }, []);
+
+  // 触摸事件处理
+  const handleTouchStart = (e: React.TouchEvent) => {
+    // 防止在手动切换过程中触发
+    if (isManualChange.current) return;
+    touchStartX.current = e.touches[0].clientX;
+    touchEndX.current = 0; // 重置结束位置
+  };
+
+  const handleTouchMove = (e: React.TouchEvent) => {
+    // 防止在手动切换过程中触发
+    if (isManualChange.current) return;
+    touchEndX.current = e.touches[0].clientX;
+  };
+
+  const handleTouchEnd = () => {
+    // 防止在手动切换过程中触发
+    if (isManualChange.current) return;
+    if (!touchStartX.current) return;
+    
+    // 如果有滑动，则执行滑动逻辑
+    if (touchEndX.current !== 0) {
+      const distance = touchStartX.current - touchEndX.current;
+      const minSwipeDistance = 50; // 最小滑动距离
+
+      if (Math.abs(distance) > minSwipeDistance) {
+        if (distance > 0) {
+          // 向左滑动，显示下一张
+          goToNext();
+        } else {
+          // 向右滑动，显示上一张
+          goToPrevious();
+        }
+      }
+    }
+
+    // 重置
+    touchStartX.current = 0;
+    touchEndX.current = 0;
+  };
+
+  if (isLoading) {
+    return (
+      <div className="relative w-full h-[200px] sm:h-[300px] md:h-[400px] lg:h-[500px] bg-gradient-to-b from-gray-800 to-gray-900 overflow-hidden animate-pulse">
+        <div className="absolute inset-0 flex items-center justify-center">
+          <div className="w-16 h-16 border-4 border-gray-600 border-t-gray-400 rounded-full animate-spin"></div>
+        </div>
+      </div>
+    );
+  }
+
+  if (!items.length) {
+    return null;
+  }
+
+  const currentItem = items[currentIndex];
+
+  return (
+    <div
+      className="relative w-full h-[200px] sm:h-[300px] md:h-[400px] lg:h-[500px] overflow-hidden group"
+      onMouseEnter={() => setIsPaused(true)}
+      onMouseLeave={() => setIsPaused(false)}
+      onTouchStart={handleTouchStart}
+      onTouchMove={handleTouchMove}
+      onTouchEnd={handleTouchEnd}
+      onClick={() => {
+        // 移动端点击整个轮播图跳转
+        if (window.innerWidth < 768) {
+          handlePlay(currentItem.title);
+        }
+      }}
+    >
+      {/* 背景图片 */}
+      <div className="absolute inset-0">
+        {items.map((item, index) => (
+          <div
+            key={item.id}
+            className={`absolute inset-0 transition-opacity duration-1000 ${
+              index === currentIndex ? 'opacity-100' : 'opacity-0'
+            }`}
+          >
+            <Image
+              src={getTMDBImageUrl(item.backdrop_path || item.poster_path, 'original')}
+              alt={item.title}
+              fill
+              className="object-cover"
+              priority={index === 0}
+              sizes="100vw"
+            />
+            {/* 渐变遮罩 */}
+            <div className="absolute inset-0 bg-gradient-to-r from-black/80 via-black/50 to-transparent"></div>
+            <div className="absolute inset-0 bg-gradient-to-t from-black/80 via-transparent to-transparent"></div>
+          </div>
+        ))}
+      </div>
+
+      {/* 内容信息 */}
+      <div className="absolute inset-0 flex items-end p-8 md:p-12 pointer-events-none">
+        <div className="max-w-2xl space-y-4">
+          <h2 className="text-3xl md:text-5xl font-bold text-white drop-shadow-lg">
+            {currentItem.title}
+          </h2>
+          
+          <div className="flex items-center gap-2 md:gap-3 text-sm md:text-base text-white/90 flex-wrap">
+            <span className="px-2 py-1 bg-yellow-500 text-black font-semibold rounded">
+              {currentItem.vote_average.toFixed(1)}
+            </span>
+            {getGenreNames(currentItem.genre_ids, 3).map(genre => (
+              <span key={genre} className="px-2 py-1 bg-white/20 backdrop-blur-sm rounded text-sm">
+                {genre}
+              </span>
+            ))}
+            {currentItem.release_date && (
+              <span>{currentItem.release_date}</span>
+            )}
+          </div>
+
+          {/* PC端播放按钮 */}
+          <button
+            onClick={(e) => {
+              e.stopPropagation();
+              handlePlay(currentItem.title);
+            }}
+            className="hidden md:flex items-center gap-2 px-6 py-3 bg-blue-600 hover:bg-blue-700 text-white font-semibold rounded-lg transition-colors pointer-events-auto shadow-lg"
+          >
+            <Play className="w-5 h-5 fill-white" />
+            立即播放
+          </button>
+
+          {currentItem.overview && (
+            <p className="text-sm md:text-base text-white/80 line-clamp-3 drop-shadow-md">
+              {currentItem.overview}
+            </p>
+          )}
+        </div>
+      </div>
+
+      {/* 左右切换按钮 - 只在桌面端显示 */}
+      <button
+        onClick={goToPrevious}
+        className="hidden md:flex absolute left-4 top-1/2 -translate-y-1/2 w-12 h-12 bg-black/30 hover:bg-black/60 text-white rounded-full items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity duration-300"
+        aria-label="上一张"
+      >
+        <ChevronLeft className="w-8 h-8" />
+      </button>
+      <button
+        onClick={goToNext}
+        className="hidden md:flex absolute right-4 top-1/2 -translate-y-1/2 w-12 h-12 bg-black/30 hover:bg-black/60 text-white rounded-full items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity duration-300"
+        aria-label="下一张"
+      >
+        <ChevronRight className="w-8 h-8" />
+      </button>
+
+      {/* 指示器 */}
+      <div className="absolute bottom-4 left-1/2 -translate-x-1/2 flex gap-2">
+        {items.map((_, index) => (
+          <button
+            key={index}
+            onClick={() => goToSlide(index)}
+            className={`h-1.5 rounded-full transition-all duration-300 ${
+              index === currentIndex
+                ? 'w-8 bg-white'
+                : 'w-1.5 bg-white/50 hover:bg-white/80'
+            }`}
+            aria-label={`跳转到第 ${index + 1} 张`}
+          />
+        ))}
+      </div>
+    </div>
+  );
+}