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2026-03-05 09:08:21 +08:00
commit 0a61c4ddec
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+/**
+ * 频道广场 — 从后端获取分类 + 频道列表
+ *
+ * 性能优化：直接使用 channel list 返回的 hasSubscribed 字段，
+ * 无需额外请求订阅列表，减少一次 HTTP 请求
+ */
+const app = getApp()
+const api = require('../../utils/api')
+
+Page({
+    data: {
+        isVip: false,
+        categories: [],
+        activeFilter: '',
+        filteredDomains: [],
+        loading: true
+    },
+
+    onLoad() {
+        this._loadCategories()
+    },
+
+    onShow() {
+        this._loadChannels()
+        this._onSubChange = () => this._loadChannels()
+        this._onVipChange = () => this._loadChannels()
+        app.on('subscriptionChange', this._onSubChange)
+        app.on('vipChange', this._onVipChange)
+    },
+
+    onHide() {
+        if (this._onSubChange) app.off('subscriptionChange', this._onSubChange)
+        if (this._onVipChange) app.off('vipChange', this._onVipChange)
+    },
+
+    /**
+     * 加载分类列表
+     */
+    _loadCategories() {
+        const self = this
+        api.getCategoryList().then(function (res) {
+            if (res.code === 200 && res.data) {
+                const list = Array.isArray(res.data) ? res.data : (res.data.list || [])
+                const categories = [{ id: '', name: '全部' }].concat(list)
+                self.setData({ categories: categories })
+            }
+        }).catch(function (err) {
+            console.error('[Discover] 加载分类失败:', err)
+        })
+    },
+
+    /**
+     * 加载频道列表
+     * 直接使用后端返回的 hasSubscribed 字段，无需单独请求订阅列表
+     */
+    _loadChannels() {
+        const self = this
+        const gd = app.globalData
+        const isFirstLoad = self.data.filteredDomains.length === 0
+        if (isFirstLoad) self.setData({ loading: true })
+
+        api.getChannelList({ categoryId: self.data.activeFilter, current: 1, pageSize: 50 })
+            .then(function (channelRes) {
+                var channels = []
+                if (channelRes.code === 200 && channelRes.data) {
+                    channels = channelRes.data.list || channelRes.data || []
+                }
+
+                var filtered = channels.map(function (ch) {
+                    var isFree = ch.isFree === 1
+                    var isVipOnly = ch.isVipOnly === 1
+                    // 最低价（分→元）
+                    var lowestPrice = null
+                    if (!isFree && !isVipOnly) {
+                        var prices = [
+                            { label: '包月', value: ch.monthlyPrice },
+                            { label: '包季', value: ch.quarterlyPrice },
+                            { label: '包年', value: ch.annualPrice }
+                        ].filter(function (p) { return p.value > 0 })
+                        if (prices.length > 0) {
+                            prices.sort(function (a, b) { return a.value - b.value })
+                            lowestPrice = { label: prices[0].label, value: (prices[0].value / 100).toFixed(2) }
+                        }
+                    }
+                    return Object.assign({}, ch, {
+                        _isSubscribed: ch.hasSubscribed === 1,
+                        _isFree: isFree,
+                        _isVipOnly: isVipOnly,
+                        _lowestPrice: lowestPrice
+                    })
+                })
+
+                self.setData({
+                    isVip: gd.isVip,
+                    filteredDomains: filtered,
+                    loading: false
+                })
+            })
+            .catch(function (err) {
+                console.error('[Discover] 加载频道失败:', err)
+                self.setData({ loading: false })
+            })
+    },
+
+    /**
+     * 切换分类筛选
+     */
+    onFilter(e) {
+        this.setData({ activeFilter: e.currentTarget.dataset.cat })
+        this._loadChannels()
+    },
+
+    /**
+     * 按鈕操作
+     *   1. 已订阅  → 跳转频道详情
+     *   2. isFree   → 直接跳转频道详情（收听）
+     *   3. isVipOnly → 引导去 VIP 页
+     *   4. 付费订阅 → 跳转支付页
+     */
+    onAction(e) {
+        const id = e.currentTarget.dataset.id
+
+        var channel = null
+        for (var i = 0; i < this.data.filteredDomains.length; i++) {
+            if (this.data.filteredDomains[i].id === id) {
+                channel = this.data.filteredDomains[i]
+                break
+            }
+        }
+        if (!channel) return
+
+        // 已订阅 → 直接进详情页
+        if (channel._isSubscribed) {
+            wx.navigateTo({ url: '/pages/channel-detail/index?id=' + id })
+            return
+        }
+
+        // 免费 → 直接进详情收听
+        if (channel._isFree) {
+            wx.navigateTo({ url: '/pages/channel-detail/index?id=' + id })
+            return
+        }
+
+        // VIP专享 → 引导 VIP 页
+        if (channel._isVipOnly) {
+            wx.navigateTo({ url: '/pages/vip/index' })
+            return
+        }
+
+        // 付费订阅 → 跳转 VIP/订阅页（channel 模式）
+        var params = 'channelId=' + id
+            + '&channelName=' + encodeURIComponent(channel.name || '')
+            + '&monthlyPrice=' + (channel.monthlyPrice || 0)
+            + '&quarterlyPrice=' + (channel.quarterlyPrice || 0)
+            + '&annualPrice=' + (channel.annualPrice || 0)
+        wx.navigateTo({ url: '/pages/vip/index?' + params })
+    },
+
+    /**
+     * 跳转频道详情
+     */
+    goDetail(e) {
+        wx.navigateTo({ url: '/pages/channel-detail/index?id=' + e.currentTarget.dataset.id })
+    },
+
+    /**
+     * 跳转VIP
+     */
+    goVip() {
+        wx.navigateTo({ url: '/pages/vip/index' })
+    }
+})