529 lines
15 KiB
Go
529 lines
15 KiB
Go
package repository
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import (
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"errors"
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"fmt"
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"math/rand"
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"time"
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"gorm.io/gorm"
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"github.com/topfans/backend/pkg/database"
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"github.com/topfans/backend/pkg/models"
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)
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// SocialRepository 社交数据访问接口
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// 目前包含好友功能，后续可扩展关注、点赞等功能
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type SocialRepository interface {
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// ========== 好友请求相关 ==========
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// CreateRequest 创建好友请求
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CreateRequest(request *models.FriendRequest) error
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// GetRequestByID 根据ID获取好友请求
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GetRequestByID(requestID int64) (*models.FriendRequest, error)
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// GetRequestsByUser 获取用户的好友请求列表
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// userID: 用户ID
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// starID: 明星ID
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// requestType: 请求类型（received=收到的, sent=发出的）
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// status: 状态筛选（可选，空字符串表示所有状态）
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// page: 页码（从1开始）
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// pageSize: 每页数量
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GetRequestsByUser(userID, starID int64, requestType string, status string, page, pageSize int) ([]*models.FriendRequest, int64, error)
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// GetLatestRequest 获取两个用户之间最近的请求记录（用于防骚扰机制）
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// fromUserID: 发送者ID
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// toUserID: 接收者ID
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// starID: 明星ID
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GetLatestRequest(fromUserID, toUserID, starID int64) (*models.FriendRequest, error)
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// UpdateRequestStatus 更新好友请求状态
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// requestID: 请求ID
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// status: 新状态
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// processedAt: 处理时间（可选，传nil表示不更新）
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UpdateRequestStatus(requestID int64, status string, processedAt *int64) error
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// ========== 好友关系相关 ==========
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// CreateFriendshipPair 创建双向好友关系（A→B 和 B→A）
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// 内部使用事务保证原子性
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CreateFriendshipPair(userID, friendID, starID int64) error
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// CheckFriendship 检查是否为好友关系
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CheckFriendship(userID, friendID, starID int64) (bool, error)
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// GetFriendsByUser 获取用户的好友列表（支持分页和关键词搜索）
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// userID: 用户ID
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// starID: 明星ID
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// keyword: 搜索关键词（搜索备注名或昵称，可选）
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// page: 页码（从1开始）
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// pageSize: 每页数量
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GetFriendsByUser(userID, starID int64, keyword string, page, pageSize int) ([]*models.Friendship, int64, error)
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// DeleteFriendshipPair 删除双向好友关系（A→B 和 B→A）
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// 内部使用事务保证原子性
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DeleteFriendshipPair(userID, friendID, starID int64) error
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// UpdateRemark 更新好友备注
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UpdateRemark(userID, friendID, starID int64, remark string) error
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// CountFriends 统计用户的好友数量
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CountFriends(userID, starID int64) (int64, error)
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// ========== 随机用户相关 ==========
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// GetRandomUsersByStar 获取同一明星下的随机用户（基于偏移量算法）
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// starID: 明星ID
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// count: 返回数量（默认1，最大100）
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// 返回: 随机用户列表（user_id, nickname）
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GetRandomUsersByStar(starID int64, count int) ([]*RandomUserInfo, error)
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// GetUsersByStarPaged 分页获取同一明星下的用户列表
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// starID: 明星ID
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// excludeUserID: 要排除的用户ID（通常是当前用户，传0则不排除）
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// page: 页码（从1开始）
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// pageSize: 每页数量
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// 返回: 用户列表（user_id, nickname, level, slot_limit）和总数
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GetUsersByStarPaged(starID int64, excludeUserID int64, page, pageSize int) ([]*PagedUserInfo, int64, error)
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// GetSlotCountsByUsers 批量获取用户的展位占用数量
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// userIDs: 用户ID列表
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// starID: 明星ID
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// 返回: map[userID]occupiedSlots
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GetSlotCountsByUsers(userIDs []int64, starID int64) (map[int64]int64, error)
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// GetFanProfileByUserIDAndStarID 根据userID和starID获取粉丝档案
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GetFanProfileByUserIDAndStarID(userID, starID int64) (*models.FanProfile, error)
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// GetFanProfilesByNickname 根据昵称模糊搜索粉丝档案（同一明星下）
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// starID: 明星ID
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// nickname: 昵称关键词
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// limit: 返回数量限制
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GetFanProfilesByNickname(starID int64, nickname string, limit int) ([]*models.FanProfile, error)
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}
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// RandomUserInfo 随机用户信息
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type RandomUserInfo struct {
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UserID int64
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Nickname string
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}
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// PagedUserInfo 分页用户信息
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type PagedUserInfo struct {
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UserID int64
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Nickname string
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Level int32
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SlotLimit int32 // 槽位上限
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}
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// socialRepositoryImpl SocialRepository 的实现
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type socialRepositoryImpl struct {
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db *gorm.DB
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}
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// NewSocialRepository 创建 SocialRepository 实例
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func NewSocialRepository() SocialRepository {
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return &socialRepositoryImpl{
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db: database.GetDB(),
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}
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}
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// ========== 好友请求相关实现 ==========
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func (r *socialRepositoryImpl) CreateRequest(request *models.FriendRequest) error {
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if request == nil {
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return errors.New("request cannot be nil")
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}
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return r.db.Create(request).Error
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}
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func (r *socialRepositoryImpl) GetRequestByID(requestID int64) (*models.FriendRequest, error) {
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var request models.FriendRequest
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err := r.db.Where("id = ?", requestID).First(&request).Error
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, nil // 返回 nil 而不是错误，便于调用方判断
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}
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return nil, err
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}
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return &request, nil
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}
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func (r *socialRepositoryImpl) GetRequestsByUser(userID, starID int64, requestType string, status string, page, pageSize int) ([]*models.FriendRequest, int64, error) {
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var requests []*models.FriendRequest
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var total int64
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query := r.db.Model(&models.FriendRequest{}).Where("star_id = ?", starID)
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// 根据请求类型筛选
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if requestType == models.FriendRequestTypeReceived {
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query = query.Where("to_user_id = ?", userID)
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} else if requestType == models.FriendRequestTypeSent {
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query = query.Where("from_user_id = ?", userID)
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} else {
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return nil, 0, fmt.Errorf("invalid request type: %s", requestType)
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}
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// 根据状态筛选
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if status != "" && status != "all" {
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query = query.Where("status = ?", status)
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}
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// 统计总数
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if err := query.Count(&total).Error; err != nil {
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return nil, 0, err
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}
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// 分页查询
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offset := (page - 1) * pageSize
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err := query.Order("created_at DESC").
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Limit(pageSize).
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Offset(offset).
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Find(&requests).Error
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if err != nil {
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return nil, 0, err
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}
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return requests, total, nil
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}
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func (r *socialRepositoryImpl) GetLatestRequest(fromUserID, toUserID, starID int64) (*models.FriendRequest, error) {
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var request models.FriendRequest
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err := r.db.Where("from_user_id = ? AND to_user_id = ? AND star_id = ?", fromUserID, toUserID, starID).
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Order("created_at DESC").
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First(&request).Error
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, nil // 返回 nil 而不是错误，表示没有找到记录
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}
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return nil, err
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}
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return &request, nil
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}
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func (r *socialRepositoryImpl) UpdateRequestStatus(requestID int64, status string, processedAt *int64) error {
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updates := map[string]interface{}{
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"status": status,
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}
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if processedAt != nil {
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updates["processed_at"] = *processedAt
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}
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result := r.db.Model(&models.FriendRequest{}).
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Where("id = ?", requestID).
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Updates(updates)
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if result.Error != nil {
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return result.Error
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}
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if result.RowsAffected == 0 {
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return errors.New("friend request not found")
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}
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return nil
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}
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// ========== 好友关系相关实现 ==========
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func (r *socialRepositoryImpl) CreateFriendshipPair(userID, friendID, starID int64) error {
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// 使用事务创建双向好友关系
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return r.db.Transaction(func(tx *gorm.DB) error {
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// 创建 A→B
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friendship1 := &models.Friendship{
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UserID: userID,
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FriendID: friendID,
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StarID: starID,
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Status: models.FriendshipStatusAccepted,
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}
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if err := tx.Create(friendship1).Error; err != nil {
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return fmt.Errorf("failed to create friendship A→B: %w", err)
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}
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// 创建 B→A
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friendship2 := &models.Friendship{
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UserID: friendID,
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FriendID: userID,
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StarID: starID,
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Status: models.FriendshipStatusAccepted,
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}
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if err := tx.Create(friendship2).Error; err != nil {
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return fmt.Errorf("failed to create friendship B→A: %w", err)
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}
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return nil
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})
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}
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func (r *socialRepositoryImpl) CheckFriendship(userID, friendID, starID int64) (bool, error) {
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var count int64
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err := r.db.Model(&models.Friendship{}).
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Where("user_id = ? AND friend_id = ? AND star_id = ? AND status = ?",
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userID, friendID, starID, models.FriendshipStatusAccepted).
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Count(&count).Error
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if err != nil {
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return false, err
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}
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return count > 0, nil
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}
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func (r *socialRepositoryImpl) GetFriendsByUser(userID, starID int64, keyword string, page, pageSize int) ([]*models.Friendship, int64, error) {
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var friendships []*models.Friendship
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var total int64
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query := r.db.Model(&models.Friendship{}).
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Where("user_id = ? AND star_id = ? AND status = ?", userID, starID, models.FriendshipStatusAccepted)
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// 如果有关键词，需要关联查询 fan_profiles 表
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if keyword != "" {
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keyword = "%" + keyword + "%"
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// 关联查询昵称或备注
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query = query.Where(
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r.db.Where("remark LIKE ?", keyword).
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Or("friend_id IN (?)",
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r.db.Model(&models.FanProfile{}).
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Select("user_id").
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Where("star_id = ? AND nickname LIKE ?", starID, keyword),
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),
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)
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}
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// 统计总数
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if err := query.Count(&total).Error; err != nil {
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return nil, 0, err
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}
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// 分页查询，按创建时间倒序
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offset := (page - 1) * pageSize
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err := query.Order("created_at DESC").
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Limit(pageSize).
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Offset(offset).
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Find(&friendships).Error
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if err != nil {
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return nil, 0, err
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}
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return friendships, total, nil
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}
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func (r *socialRepositoryImpl) DeleteFriendshipPair(userID, friendID, starID int64) error {
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// 使用事务删除双向好友关系
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return r.db.Transaction(func(tx *gorm.DB) error {
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// 删除 A→B
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result1 := tx.Where("user_id = ? AND friend_id = ? AND star_id = ?", userID, friendID, starID).
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Delete(&models.Friendship{})
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if result1.Error != nil {
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return fmt.Errorf("failed to delete friendship A→B: %w", result1.Error)
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}
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// 删除 B→A
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result2 := tx.Where("user_id = ? AND friend_id = ? AND star_id = ?", friendID, userID, starID).
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Delete(&models.Friendship{})
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if result2.Error != nil {
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return fmt.Errorf("failed to delete friendship B→A: %w", result2.Error)
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}
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// 检查是否真的删除了记录
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if result1.RowsAffected == 0 && result2.RowsAffected == 0 {
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return errors.New("friendship not found")
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}
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return nil
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})
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}
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func (r *socialRepositoryImpl) UpdateRemark(userID, friendID, starID int64, remark string) error {
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result := r.db.Model(&models.Friendship{}).
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Where("user_id = ? AND friend_id = ? AND star_id = ?", userID, friendID, starID).
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Update("remark", remark)
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if result.Error != nil {
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return result.Error
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}
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if result.RowsAffected == 0 {
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return errors.New("friendship not found")
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}
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return nil
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}
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func (r *socialRepositoryImpl) CountFriends(userID, starID int64) (int64, error) {
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var count int64
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err := r.db.Model(&models.Friendship{}).
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Where("user_id = ? AND star_id = ? AND status = ?", userID, starID, models.FriendshipStatusAccepted).
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Count(&count).Error
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return count, err
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}
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// ========== 随机用户相关实现 ==========
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// GetRandomUsersByStar 获取同一明星下的随机用户（基于偏移量算法）
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func (r *socialRepositoryImpl) GetRandomUsersByStar(starID int64, count int) ([]*RandomUserInfo, error) {
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// 1. 参数验证
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if starID <= 0 {
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return nil, errors.New("star_id must be greater than 0")
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}
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if count <= 0 {
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count = 1 // 默认返回1个
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}
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if count > 100 {
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count = 100 // 最大限制100个
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}
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// 2. 查询总数
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var total int64
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err := r.db.Model(&models.FanProfile{}).
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Where("star_id = ? AND is_active = ?", starID, true).
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Count(&total).Error
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if err != nil {
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return nil, fmt.Errorf("failed to count fan profiles: %w", err)
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}
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if total == 0 {
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return []*RandomUserInfo{}, nil // 没有数据，返回空列表
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}
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// 3. 生成随机偏移量并查询
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// 使用当前时间作为随机种子，确保每次调用都有不同的随机性
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rand.Seed(time.Now().UnixNano())
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randomOffset := rand.Int63n(total) // [0, total-1]
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var profiles []models.FanProfile
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err = r.db.Model(&models.FanProfile{}).
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Select("user_id", "nickname").
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Where("star_id = ? AND is_active = ?", starID, true).
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Order("id ASC").
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Limit(count).
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Offset(int(randomOffset)).
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Find(&profiles).Error
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if err != nil {
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return nil, fmt.Errorf("failed to get random users: %w", err)
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}
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// 4. 转换为结果
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result := make([]*RandomUserInfo, 0, len(profiles))
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for _, profile := range profiles {
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result = append(result, &RandomUserInfo{
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UserID: profile.UserID,
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Nickname: profile.Nickname,
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})
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}
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return result, nil
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}
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// GetUsersByStarPaged 分页获取同一明星下的用户列表
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func (r *socialRepositoryImpl) GetUsersByStarPaged(starID int64, excludeUserID int64, page, pageSize int) ([]*PagedUserInfo, int64, error) {
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offset := (page - 1) * pageSize
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query := r.db.Model(&models.FanProfile{}).
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Where("star_id = ?", starID)
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if excludeUserID > 0 {
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query = query.Where("user_id != ?", excludeUserID)
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}
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var total int64
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if err := query.Count(&total).Error; err != nil {
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return nil, 0, fmt.Errorf("failed to count users: %w", err)
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}
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var profiles []models.FanProfile
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err := query.
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Select("user_id", "nickname", "level", "slot_limit").
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Order("id DESC").
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Limit(pageSize).
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Offset(offset).
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Find(&profiles).Error
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if err != nil {
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return nil, 0, fmt.Errorf("failed to get paged users: %w", err)
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}
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result := make([]*PagedUserInfo, 0, len(profiles))
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for _, profile := range profiles {
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result = append(result, &PagedUserInfo{
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UserID: profile.UserID,
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Nickname: profile.Nickname,
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Level: profile.Level,
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SlotLimit: profile.SlotLimit,
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})
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}
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return result, total, nil
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}
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// GetSlotCountsByUsers 批量获取用户的共享展位已占用数量
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// 共享展位 = public visibility 的 BoothSlot
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// 已占用 = BoothSlot 上有 Exhibition 记录
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func (r *socialRepositoryImpl) GetSlotCountsByUsers(userIDs []int64, starID int64) (map[int64]int64, error) {
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if len(userIDs) == 0 {
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return make(map[int64]int64), nil
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}
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// 统计每个用户已占用的共享展位数量（通过 Exhibition 表 JOIN BoothSlot）
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var results []struct {
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UserID int64
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Count int64
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}
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err := r.db.Model(&models.Exhibition{}).
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Select("bs.user_id, COUNT(*) as count").
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Joins("JOIN booth_slots bs ON bs.slot_id = exhibitions.slot_id").
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Where("bs.user_id IN ? AND bs.star_id = ? AND bs.visibility = ? AND bs.is_enabled = ?", userIDs, starID, "public", true).
|
||
Group("bs.user_id").
|
||
Find(&results).Error
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
countMap := make(map[int64]int64)
|
||
for _, res := range results {
|
||
countMap[res.UserID] = res.Count
|
||
}
|
||
// 未找到记录的用户，默认为 0（不需要在 map 中明确设置）
|
||
return countMap, nil
|
||
}
|
||
|
||
// GetFanProfileByUserIDAndStarID 根据userID和starID获取粉丝档案
|
||
func (r *socialRepositoryImpl) GetFanProfileByUserIDAndStarID(userID, starID int64) (*models.FanProfile, error) {
|
||
var profile models.FanProfile
|
||
err := r.db.Where("user_id = ? AND star_id = ?", userID, starID).First(&profile).Error
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
return &profile, nil
|
||
}
|
||
|
||
// GetFanProfilesByNickname 根据昵称模糊搜索粉丝档案（同一明星下）
|
||
func (r *socialRepositoryImpl) GetFanProfilesByNickname(starID int64, nickname string, limit int) ([]*models.FanProfile, error) {
|
||
if limit <= 0 {
|
||
limit = 10 // 默认返回10条
|
||
}
|
||
if limit > 50 {
|
||
limit = 50 // 最大限制50条
|
||
}
|
||
|
||
var profiles []*models.FanProfile
|
||
err := r.db.Where("star_id = ? AND is_active = ? AND nickname LIKE ?", starID, true, "%"+nickname+"%").
|
||
Order("level DESC, updated_at DESC").
|
||
Limit(limit).
|
||
Find(&profiles).Error
|
||
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
return profiles, nil
|
||
}
|