feat(points): 增加双边积分与虚拟积分商城
This commit is contained in:
yml2213
@@ -0,0 +1,271 @@
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package pointsmall
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import (
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"context"
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"errors"
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"fmt"
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"strings"
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"time"
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"hfb_sys/backend/internal/model"
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"hfb_sys/backend/internal/modules/rentergrowth"
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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)
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type Repository struct {
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db *gorm.DB
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}
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func NewRepository(db *gorm.DB) *Repository {
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return &Repository{db: db}
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}
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func (r *Repository) Summary(ctx context.Context, userID uint64) (*SummaryDTO, error) {
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var user model.User
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if err := r.db.WithContext(ctx).First(&user, userID).Error; err != nil {
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return nil, err
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}
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cfg, err := rentergrowth.ConfigForTx(r.db.WithContext(ctx))
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if err != nil {
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return nil, err
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}
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level := rentergrowth.LevelForPoints(cfg, user.RenterGrowthPoints)
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return &SummaryDTO{
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AvailablePoints: user.PointsAvailable,
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LifetimePoints: user.RenterGrowthPoints,
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LevelCode: level.Code,
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LevelName: level.Name,
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PointsPerYuan: cfg.PointsPerYuan,
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PointsMultiplierBps: level.PointsMultiplierBps,
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}, nil
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}
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func (r *Repository) Ledger(ctx context.Context, userID uint64, limit int) ([]model.RenterGrowthLedger, error) {
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if limit <= 0 || limit > 200 {
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limit = 100
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}
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var rows []model.RenterGrowthLedger
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err := r.db.WithContext(ctx).
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Where("user_id = ?", userID).
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Order("created_at DESC, id DESC").
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Limit(limit).
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Find(&rows).Error
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return rows, err
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}
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func (r *Repository) ListProducts(ctx context.Context, includeOffline bool) ([]ProductDTO, error) {
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var rows []model.PointsMallProduct
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tx := r.db.WithContext(ctx).Order("sort_order DESC, id DESC")
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if !includeOffline {
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tx = tx.Where("status = ?", "online")
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}
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if err := tx.Find(&rows).Error; err != nil {
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return nil, err
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}
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items := make([]ProductDTO, 0, len(rows))
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for _, row := range rows {
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items = append(items, toProductDTO(row))
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}
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return items, nil
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}
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func (r *Repository) CreateProduct(ctx context.Context, req ProductRequest) (*ProductDTO, error) {
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item := productFromRequest(req)
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if err := r.db.WithContext(ctx).Create(&item).Error; err != nil {
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return nil, err
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}
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dto := toProductDTO(item)
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return &dto, nil
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}
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func (r *Repository) UpdateProduct(ctx context.Context, id uint64, req ProductRequest) (*ProductDTO, error) {
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var item model.PointsMallProduct
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if err := r.db.WithContext(ctx).First(&item, id).Error; err != nil {
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return nil, err
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}
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next := productFromRequest(req)
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next.ID = item.ID
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next.RedeemedCount = item.RedeemedCount
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next.CreatedAt = item.CreatedAt
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if err := r.db.WithContext(ctx).Model(&item).Updates(map[string]any{
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"title": next.Title,
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"subtitle": next.Subtitle,
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"description": next.Description,
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"cover_url": next.CoverURL,
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"redemption_instructions": next.RedemptionInstructions,
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"points_price": next.PointsPrice,
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"stock": next.Stock,
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"per_user_limit": next.PerUserLimit,
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"status": next.Status,
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"sort_order": next.SortOrder,
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}).Error; err != nil {
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return nil, err
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}
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return r.findProduct(ctx, id)
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}
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func (r *Repository) findProduct(ctx context.Context, id uint64) (*ProductDTO, error) {
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var item model.PointsMallProduct
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if err := r.db.WithContext(ctx).First(&item, id).Error; err != nil {
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return nil, err
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}
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dto := toProductDTO(item)
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return &dto, nil
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}
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func (r *Repository) Redeem(ctx context.Context, userID, productID uint64, quantity int) (*RedemptionDTO, error) {
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if userID == 0 || productID == 0 || quantity <= 0 || quantity > 10 {
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return nil, ErrInvalidInput
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}
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var result model.PointsMallRedemption
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err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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var product model.PointsMallProduct
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&product, productID).Error; err != nil {
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return err
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}
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if product.Status != "online" || product.Stock < int64(quantity) {
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return ErrProductUnavailable
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}
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var redeemed int64
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if err := tx.Model(&model.PointsMallRedemption{}).
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Where("product_id = ? AND user_id = ? AND status <> ?", productID, userID, "cancelled").
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Select("COALESCE(SUM(quantity), 0)").
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Scan(&redeemed).Error; err != nil {
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return err
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}
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if redeemed+int64(quantity) > int64(product.PerUserLimit) {
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return ErrRedeemLimitExceeded
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}
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var user model.User
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&user, userID).Error; err != nil {
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return err
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}
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totalPoints := product.PointsPrice * int64(quantity)
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if totalPoints <= 0 || user.PointsAvailable < totalPoints {
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return ErrInsufficientPoints
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}
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now := time.Now()
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result = model.PointsMallRedemption{
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RedemptionNo: fmt.Sprintf("PM%d%d", userID, now.UnixNano()),
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UserID: userID,
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ProductID: product.ID,
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ProductTitle: product.Title,
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ProductCoverURL: product.CoverURL,
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RedemptionInstructions: product.RedemptionInstructions,
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PointsPrice: product.PointsPrice,
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Quantity: quantity,
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TotalPoints: totalPoints,
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Status: "pending",
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CreatedAt: now,
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UpdatedAt: now,
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}
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if err := tx.Create(&result).Error; err != nil {
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return err
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}
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beforePoints := user.PointsAvailable
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user.PointsAvailable -= totalPoints
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if err := tx.Save(&user).Error; err != nil {
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return err
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}
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if err := tx.Model(&product).Updates(map[string]any{
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"stock": gorm.Expr("stock - ?", quantity),
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"redeemed_count": gorm.Expr("redeemed_count + ?", quantity),
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}).Error; err != nil {
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return err
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}
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bizKey := fmt.Sprintf("mall:%d:redeem", result.ID)
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ledger := model.RenterGrowthLedger{
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UserID: userID,
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Role: "mall",
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RedemptionID: result.ID,
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Points: -totalPoints,
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BeforePoints: user.RenterGrowthPoints,
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AfterPoints: user.RenterGrowthPoints,
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AvailableBefore: beforePoints,
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AvailableAfter: user.PointsAvailable,
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BeforeLevel: user.RenterGrowthLevel,
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AfterLevel: user.RenterGrowthLevel,
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Source: "mall_redeem",
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BizKey: &bizKey,
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Remark: "积分商城兑换: " + product.Title,
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CreatedAt: now,
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}
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return tx.Create(&ledger).Error
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})
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if err != nil {
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return nil, err
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}
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dto := toRedemptionDTO(result)
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return &dto, nil
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}
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func (r *Repository) ListRedemptions(ctx context.Context, userID uint64, admin bool) ([]RedemptionDTO, error) {
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type row struct {
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model.PointsMallRedemption
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UserPhone string
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UserNickname string
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}
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var rows []row
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tx := r.db.WithContext(ctx).Table("points_mall_redemptions AS r").
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Select("r.*, u.phone AS user_phone, u.nickname AS user_nickname").
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Joins("LEFT JOIN users AS u ON u.id = r.user_id").
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Order("r.created_at DESC, r.id DESC")
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if !admin {
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tx = tx.Where("r.user_id = ?", userID)
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}
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if err := tx.Scan(&rows).Error; err != nil {
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return nil, err
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}
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items := make([]RedemptionDTO, 0, len(rows))
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for _, item := range rows {
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dto := toRedemptionDTO(item.PointsMallRedemption)
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dto.UserPhone = item.UserPhone
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dto.UserNickname = item.UserNickname
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items = append(items, dto)
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}
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return items, nil
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}
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func (r *Repository) CompleteRedemption(ctx context.Context, adminID, id uint64, remark string) (*RedemptionDTO, error) {
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var result model.PointsMallRedemption
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err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&result, id).Error; err != nil {
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return err
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}
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if result.Status != "pending" {
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return ErrRedemptionNotPending
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}
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now := time.Now()
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result.Status = "completed"
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result.AdminRemark = strings.TrimSpace(remark)
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result.CompletedBy = &adminID
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result.CompletedAt = &now
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return tx.Save(&result).Error
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})
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if err != nil {
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return nil, err
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}
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dto := toRedemptionDTO(result)
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return &dto, nil
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}
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func productFromRequest(req ProductRequest) model.PointsMallProduct {
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return model.PointsMallProduct{
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Title: strings.TrimSpace(req.Title),
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Subtitle: strings.TrimSpace(req.Subtitle),
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Description: strings.TrimSpace(req.Description),
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CoverURL: strings.TrimSpace(req.CoverURL),
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RedemptionInstructions: strings.TrimSpace(req.RedemptionInstructions),
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PointsPrice: req.PointsPrice,
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Stock: req.Stock,
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PerUserLimit: req.PerUserLimit,
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Status: req.Status,
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SortOrder: req.SortOrder,
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}
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}
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func IsNotFound(err error) bool {
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return errors.Is(err, gorm.ErrRecordNotFound)
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}
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