Initial commit

miniprogram/pages/index/index.js

@@ -0,0 +1,242 @@
+const EXIT_THRESHOLD = 80;
+const FAST_SWIPE_VELOCITY = 0.5;
+
+Page({
+  isDragging: false,
+  isExiting: false,
+  startTime: 0,
+  startX: 0,
+  startY: 0,
+  lastX: 0,
+
+  data: {
+    nameList: [],
+    currentIndex: 0,
+    isLoading: true,
+    isFlipped: false,
+    keyword: '清冷',
+    
+    // 动画控制
+    translateX: 0,
+    rotate: 0,
+    opacity: 1,
+    transition: 'none',
+    
+    cardKey: 0,
+    collectedNames: [],
+    showCollection: false
+  },
+
+  onLoad(options) {
+    const keyword = options.keyword || this.data.keyword;
+    this.setData({ keyword });
+    this.fetchNames(keyword);
+  },
+
+  fetchNames(keyword) {
+    this.setData({ isLoading: true });
+    wx.showLoading({ title: '见素正在感悟...', mask: true });
+    wx.request({
+      url: 'http://localhost:8080/api/names/generate',
+      data: { keyword },
+      success: (res) => {
+        if (res.statusCode === 200 && res.data && res.data.length > 0) {
+          this.setData({ nameList: res.data, currentIndex: 0, isLoading: false, cardKey: this.data.cardKey + 1 });
+        } else {
+          wx.showToast({ title: '意境未达，请重试', icon: 'none' });
+        }
+      },
+      fail: () => wx.showToast({ title: '网络疏离，请检查后端', icon: 'none' }),
+      complete: () => { this.setData({ isLoading: false }); wx.hideLoading(); }
+    });
+  },
+
+  onFlip() {
+    // 守卫：如果这是一次拖拽，isDragging 会为 true，则不执行翻转
+    if (this.isDragging || this.isExiting) return;
+    
+    getApp().playAudio('flip');
+    this.setData({ isFlipped: !this.data.isFlipped });
+  },
+
+  onTouchStart(e) {
+    if (this.isExiting) return;
+    
+    this.isDragging = false; // 每次开始触摸时，都假定为点击，而非拖拽
+    this.startX = e.touches[0].clientX;
+    this.lastX = this.startX;
+    this.startY = e.touches[0].clientY;
+    this.startTime = Date.now();
+    this.setData({ transition: 'none' }); 
+  },
+
+  onTouchMove(e) {
+    if (this.isExiting) return;
+
+    const deltaX = e.touches[0].clientX - this.startX;
+    // 只有移动超过5px，才真正判定为“拖拽”
+    if (Math.abs(deltaX) > 5) {
+        this.isDragging = true;
+    }
+
+    // 如果不是拖拽，则不进行任何移动
+    if (!this.isDragging) return;
+
+    this.lastX = e.touches[0].clientX;
+    const rotate = deltaX * 0.05;
+    const opacity = 1 - Math.abs(deltaX) / 200;
+    this.setData({
+      translateX: deltaX,
+      rotate: rotate,
+      opacity: opacity
+    });
+  },
+
+  onTouchEnd() {
+    if (this.isExiting) return;
+
+    // 如果不是拖拽（即这是一次纯点击），则 onTouchEnd 不执行任何操作，交由 onFlip 处理
+    if (!this.isDragging) {
+      return;
+    }
+    
+    // 以下是拖拽结束后的逻辑
+    const deltaX = this.lastX - this.startX;
+    const deltaTime = Date.now() - this.startTime;
+    const velocity = deltaX / deltaTime;
+    const shouldExit = Math.abs(deltaX) > EXIT_THRESHOLD || Math.abs(velocity) > FAST_SWIPE_VELOCITY;
+
+    if (shouldExit) {
+      this.isExiting = true;
+      const direction = deltaX > 0 ? 1 : -1;
+      const targetX = direction * 500;
+      this.setData({
+        translateX: targetX,
+        opacity: 0,
+        transition: 'all 0.3s cubic-bezier(0.6, -0.28, 0.735, 0.045)'
+      });
+    } else {
+      this.setData({
+        translateX: 0,
+        rotate: 0,
+        opacity: 1,
+        transition: 'all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275)'
+      });
+    }
+    
+    // 延迟重置 isDragging 标志位。
+    // 这是为了确保在系统触发 tap 事件时，isDragging 标志仍然为 true，
+    // 从而让 onFlip 方法可以正确地忽略掉这次由拖拽产生的 tap。
+    setTimeout(() => {
+      this.isDragging = false;
+    }, 100);
+  },
+
+  onTransitionEnd() {
+    if (!this.isExiting) return;
+
+    const direction = this.data.translateX > 0 ? 'like' : 'dislike';
+    if (direction === 'like') {
+      this.handleLike();
+    } else {
+      this.handleCardExit(direction);
+    }
+  },
+
+  handleLike() {
+    wx.vibrateShort({ type: 'medium' });
+    getApp().playAudio('success');
+    const card = this.data.nameList[this.data.currentIndex];
+    if (!this.data.collectedNames.some(item => item.name === card.name)) {
+      this.setData({ collectedNames: [...this.data.collectedNames, card] });
+    }
+    this.handleCardExit('like');
+  },
+
+  handleCardExit() {
+    const nextIndex = this.data.currentIndex + 1;
+    wx.nextTick(() => {
+      this.setData({
+        transition: 'none',
+        translateX: 0,
+        rotate: 0,
+        opacity: 1,
+        isFlipped: false
+      }, () => {
+        if (nextIndex < this.data.nameList.length) {
+          this.setData({ currentIndex: nextIndex, cardKey: this.data.cardKey + 1 });
+        } else {
+          wx.showModal({
+            title: '见素时刻',
+            content: '这一波灵感已尽，是否再求几名？',
+            confirmText: '再求', cancelText: '返回',
+            success: (res) => { if (res.confirm) this.fetchNames(this.data.keyword); }
+          });
+        }
+        this.isExiting = false;
+      });
+    });
+  },
+
+  toggleCollectionView() {
+    this.setData({ showCollection: !this.data.showCollection });
+  },
+
+  onDeleteCollected(e) {
+    const nameToDelete = e.currentTarget.dataset.name;
+    this.setData({
+      collectedNames: this.data.collectedNames.filter(item => item.name !== nameToDelete)
+    });
+    wx.vibrateShort({ type: 'light' });
+  },
+  
+  onSavePoster() {
+    const card = this.data.nameList[this.data.currentIndex];
+    wx.showLoading({ title: '绘笔收录中...', mask: true });
+    const query = wx.createSelectorQuery().in(this);
+    query.select('#posterCanvas')
+      .fields({ node: true, size: true })
+      .exec((res) => {
+        const canvas = res[0].node;
+        const ctx = canvas.getContext('2d');
+        const dpr = wx.getSystemInfoSync().pixelRatio;
+        canvas.width = 750 * dpr;
+        canvas.height = 1334 * dpr;
+        ctx.scale(dpr, dpr);
+        ctx.fillStyle = '#FFFFFF';
+        ctx.fillRect(0, 0, 750, 1334);
+        ctx.fillStyle = '#2D2D2D';
+        ctx.font = '300 120px serif';
+        ctx.textAlign = 'center';
+        ctx.textBaseline = 'middle';
+        const name = card.name;
+        const charArray = name.split('');
+        const charHeight = 140;
+        const startY = 667 - (charArray.length * charHeight) / 2 + charHeight / 2;
+        charArray.forEach((char, index) => ctx.fillText(char, 375, startY + index * charHeight));
+        const sealChar = this.data.keyword.substring(0, 1) || '素';
+        ctx.fillStyle = '#B22222';
+        ctx.fillRect(100, 100, 80, 80);
+        ctx.fillStyle = '#FFFFFF';
+        ctx.font = '40px serif';
+        ctx.fillText(sealChar, 140, 140);
+        const randomNum = Math.floor(Math.random() * 9000) + 1000;
+        ctx.fillStyle = '#D0D0D0';
+        ctx.font = '24px sans-serif';
+        ctx.fillText(`见素第 ${randomNum} 号灵感`, 375, 1200);
+        setTimeout(() => {
+          wx.canvasToTempFilePath({
+            canvas: canvas,
+            success: (res) => {
+              wx.hideLoading();
+              wx.showShareImageMenu({ path: res.tempFilePath });
+            },
+            fail: () => {
+              wx.hideLoading();
+              wx.showToast({ title: '绘笔受阻', icon: 'none' });
+            }
+          });
+        }, 300);
+      });
+  }
+});