package user

import (
	"bindbox-game/internal/repository/mysql/model"
	"context"
	"fmt"
	"time"

	"go.uber.org/zap"
)

// GrantGamePass 发放游戏次数卡（购买）
func (s *service) GrantGamePass(ctx context.Context, userID int64, packageID int64, count int32, orderNo string) error {
	s.logger.Info("GrantGamePass: 开始发放次数卡",
		zap.Int64("user_id", userID),
		zap.Int64("package_id", packageID),
		zap.Int32("count", count),
		zap.String("order_no", orderNo))

	if count <= 0 {
		count = 1
	}

	// 1. 获取套餐信息
	pkg, err := s.readDB.GamePassPackages.WithContext(ctx).
		Where(s.readDB.GamePassPackages.ID.Eq(packageID)).
		First()
	if err != nil {
		return fmt.Errorf("package not found: %w", err)
	}

	totalPasses := pkg.PassCount * count

	// 2. 构造次数卡记录
	now := time.Now()
	pass := &model.UserGamePasses{
		UserID:       userID,
		ActivityID:   pkg.ActivityID,
		Remaining:    totalPasses,
		TotalGranted: totalPasses,
		TotalUsed:    0,
		Source:       "purchase",
		Remark:       fmt.Sprintf("订单:%s|套餐:%s|数量:%d", orderNo, pkg.Name, count),
		CreatedAt:    now,
		UpdatedAt:    now,
	}

	if pkg.ValidDays > 0 {
		pass.ExpiredAt = now.Add(time.Duration(pkg.ValidDays) * 24 * time.Hour)
	}

	// 3. 写入数据库
	q := s.writeDB.UserGamePasses.WithContext(ctx)
	if pass.ExpiredAt.IsZero() {
		q = q.Omit(s.writeDB.UserGamePasses.ExpiredAt)
	}

	if err := q.Create(pass); err != nil {
		s.logger.Error("GrantGamePass: 写入数据库失败", zap.Error(err))
		return fmt.Errorf("failed to create user game pass: %w", err)
	}

	s.logger.Info("GrantGamePass: 发放成功", zap.Int64("pass_id", pass.ID))
	return nil
}