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doc_mall/consumer/sql/add_messages_and_notifications.sql

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+-- =====================================================================================
+-- 补充消息 notification 和 客服 chat 相关表结构及测试数据
+-- 对应用户 ID: b653fded-7d5e-4950-aa0d-725595543e3c (test@mall.com)
+-- =====================================================================================
+
+-- 1. 创建通知/消息表 (ml_notifications)
+-- 用于存储: 系统通知、优惠活动、订单通知等
+CREATE TABLE IF NOT EXISTS public.ml_notifications (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES public.ak_users(id) ON DELETE CASCADE,
+    type VARCHAR(50) NOT NULL, -- 'system'(系统通知), 'promotion'(优惠活动), 'order'(订单通知)
+    title VARCHAR(200) NOT NULL,
+    content TEXT,
+    icon_url TEXT, -- 图标/图片地址
+    link_url TEXT, -- 点击跳转链接
+    is_read BOOLEAN DEFAULT FALSE,
+    extra_data JSONB DEFAULT '{}', -- 扩展数据
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+COMMENT ON TABLE public.ml_notifications IS '系统通知与活动消息表';
+
+-- 开启 RLS
+ALTER TABLE public.ml_notifications ENABLE ROW LEVEL SECURITY;
+
+-- 创建 RLS 策略 (用户只能查自己的通知)
+CREATE POLICY ml_notifications_select_policy ON public.ml_notifications
+    FOR SELECT USING (
+        auth.uid() = (SELECT auth_id FROM public.ak_users WHERE id = user_id)
+    );
+
+-- 2. 创建客服会话/消息表 (ml_chat_messages)
+-- 用于存储: 用户与客服的聊天记录
+CREATE TABLE IF NOT EXISTS public.ml_chat_messages (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    session_id UUID DEFAULT uuid_generate_v4(), -- 会话ID，可用于分组
+    sender_id UUID REFERENCES public.ak_users(id), -- 发送者ID (NULL代表系统/自动回复)
+    receiver_id UUID REFERENCES public.ak_users(id), -- 接收者ID
+    content TEXT,
+    msg_type VARCHAR(20) DEFAULT 'text', -- 'text', 'image', 'product', 'order'
+    is_read BOOLEAN DEFAULT FALSE,
+    is_from_user BOOLEAN DEFAULT FALSE, -- 方便前端判断方向 (true: 用户发给客服, false: 客服发给用户)
+    extra_data JSONB DEFAULT '{}', -- 用于存储商品卡片信息等
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+COMMENT ON TABLE public.ml_chat_messages IS '客服聊天记录表';
+
+-- 开启 RLS
+ALTER TABLE public.ml_chat_messages ENABLE ROW LEVEL SECURITY;
+
+-- 创建 RLS 策略 (用户只能查属于自己的消息)
+CREATE POLICY ml_chat_messages_select_policy ON public.ml_chat_messages
+    FOR SELECT USING (
+        auth.uid() IN (
+            SELECT auth_id FROM public.ak_users WHERE id IN (sender_id, receiver_id)
+        )
+    );
+
+-- =====================================================================================
+-- 3. 插入测试数据
+-- 目标用户: b653fded-7d5e-4950-aa0d-725595543e3c
+-- =====================================================================================
+
+-- 3.1 插入一条“系统通知”
+INSERT INTO public.ml_notifications (user_id, type, title, content, icon_url, created_at)
+VALUES (
+    'b653fded-7d5e-4950-aa0d-725595543e3c',
+    'system',
+    '系统安全升级通知',
+    '尊敬的用户，为了保障您的账户安全，我们已完成系统安全组件升级。建议您定期修改登录密码。',
+    '/static/icons/system-notice.png',
+    NOW() - INTERVAL '1 day' -- 昨天收到的
+);
+
+-- 3.2 插入一条“优惠活动”
+INSERT INTO public.ml_notifications (user_id, type, title, content, icon_url, link_url, created_at)
+VALUES (
+    'b653fded-7d5e-4950-aa0d-725595543e3c',
+    'promotion',
+    '夏日清凉大促开启',
+    '全场商品5折起！清凉一夏，好物带回家。点击立即参与抢购，限量神券等你来拿！',
+    '/static/icons/promotion.png',
+    '/pages/mall/activity/summer_sale',
+    NOW()
+);
+
+-- 3.3 插入一条“客服消息” (模仿客服发给用户的欢迎语)
+INSERT INTO public.ml_chat_messages (sender_id, receiver_id, content, msg_type, is_from_user, created_at)
+VALUES (
+    NULL, -- NULL表示系统客服
+    'b653fded-7d5e-4950-aa0d-725595543e3c',
+    '您好！欢迎光临商城优选。请问有什么可以帮您的吗？我们全天24小时为您服务。',
+    'text',
+    FALSE, -- 客服发的
+    NOW()
+);