109 lines
2.7 KiB
TypeScript
109 lines
2.7 KiB
TypeScript
/**
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* 检查用户是否已购买指定章节/全书
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* 用于支付前校验，避免重复购买
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*
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* GET /api/user/check-purchased?userId=xxx&type=section&productId=xxx
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*/
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import { NextRequest, NextResponse } from 'next/server'
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import { query } from '@/lib/db'
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export async function GET(request: NextRequest) {
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try {
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const { searchParams } = new URL(request.url)
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const userId = searchParams.get('userId')
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const type = searchParams.get('type') // 'section' | 'fullbook'
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const productId = searchParams.get('productId')
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if (!userId) {
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return NextResponse.json({
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success: false,
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error: '缺少 userId 参数'
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}, { status: 400 })
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}
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// 1. 查询用户是否购买全书
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const userRows = await query(`
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SELECT has_full_book FROM users WHERE id = ?
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`, [userId]) as any[]
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if (userRows.length === 0) {
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return NextResponse.json({
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success: false,
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error: '用户不存在'
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}, { status: 404 })
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}
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const hasFullBook = userRows[0].has_full_book || false
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// 如果已购全书，直接返回已购买
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if (hasFullBook) {
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return NextResponse.json({
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success: true,
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data: {
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isPurchased: true,
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reason: 'has_full_book'
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}
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})
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}
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// 2. 如果是购买全书，检查是否已有全书订单
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if (type === 'fullbook') {
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const orderRows = await query(`
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SELECT COUNT(*) as count
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FROM orders
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WHERE user_id = ?
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AND product_type = 'fullbook'
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AND status = 'paid'
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`, [userId]) as any[]
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const hasPaid = orderRows[0].count > 0
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return NextResponse.json({
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success: true,
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data: {
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isPurchased: hasPaid,
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reason: hasPaid ? 'fullbook_order_exists' : null
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}
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})
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}
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// 3. 如果是购买章节，检查是否已有该章节订单
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if (type === 'section' && productId) {
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const orderRows = await query(`
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SELECT COUNT(*) as count
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FROM orders
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WHERE user_id = ?
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AND product_type = 'section'
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AND product_id = ?
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AND status = 'paid'
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`, [userId, productId]) as any[]
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const hasPaid = orderRows[0].count > 0
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return NextResponse.json({
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success: true,
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data: {
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isPurchased: hasPaid,
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reason: hasPaid ? 'section_order_exists' : null
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}
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})
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}
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return NextResponse.json({
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success: true,
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data: {
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isPurchased: false,
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reason: null
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}
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})
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} catch (error) {
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console.error('[CheckPurchased] 查询失败:', error)
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return NextResponse.json({
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success: false,
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error: '查询购买状态失败'
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}, { status: 500 })
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}
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}
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