Initial backend repository commit.

Set up project files and add .gitignore to exclude local build/runtime artifacts.

Made-with: Cursor

internal/repository/device_token_repo.go

@@ -0,0 +1,166 @@
+package repository
+
+import (
+	"time"
+
+	"carrot_bbs/internal/model"
+
+	"gorm.io/gorm"
+)
+
+// DeviceTokenRepository 设备Token仓储
+type DeviceTokenRepository struct {
+	db *gorm.DB
+}
+
+// NewDeviceTokenRepository 创建设备Token仓储
+func NewDeviceTokenRepository(db *gorm.DB) *DeviceTokenRepository {
+	return &DeviceTokenRepository{db: db}
+}
+
+// Create 创建设备Token
+func (r *DeviceTokenRepository) Create(token *model.DeviceToken) error {
+	return r.db.Create(token).Error
+}
+
+// GetByID 根据ID获取设备Token
+func (r *DeviceTokenRepository) GetByID(id int64) (*model.DeviceToken, error) {
+	var token model.DeviceToken
+	err := r.db.First(&token, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &token, nil
+}
+
+// Update 更新设备Token
+func (r *DeviceTokenRepository) Update(token *model.DeviceToken) error {
+	return r.db.Save(token).Error
+}
+
+// Delete 删除设备Token（软删除）
+func (r *DeviceTokenRepository) Delete(id int64) error {
+	return r.db.Delete(&model.DeviceToken{}, id).Error
+}
+
+// GetByUserID 获取用户所有设备
+// userID 参数为 string 类型（UUID格式），与JWT中user_id保持一致
+func (r *DeviceTokenRepository) GetByUserID(userID string) ([]*model.DeviceToken, error) {
+	var tokens []*model.DeviceToken
+	err := r.db.Where("user_id = ?", userID).
+		Order("created_at DESC").
+		Find(&tokens).Error
+	return tokens, err
+}
+
+// GetActiveByUserID 获取用户活跃设备
+// userID 参数为 string 类型（UUID格式），与JWT中user_id保持一致
+func (r *DeviceTokenRepository) GetActiveByUserID(userID string) ([]*model.DeviceToken, error) {
+	var tokens []*model.DeviceToken
+	err := r.db.Where("user_id = ? AND is_active = ?", userID, true).
+		Order("last_used_at DESC").
+		Find(&tokens).Error
+	return tokens, err
+}
+
+// GetByDeviceID 根据设备ID获取设备Token
+func (r *DeviceTokenRepository) GetByDeviceID(deviceID string) (*model.DeviceToken, error) {
+	var token model.DeviceToken
+	err := r.db.Where("device_id = ?", deviceID).First(&token).Error
+	if err != nil {
+		return nil, err
+	}
+	return &token, nil
+}
+
+// GetByPushToken 根据推送Token获取设备信息
+func (r *DeviceTokenRepository) GetByPushToken(pushToken string) (*model.DeviceToken, error) {
+	var token model.DeviceToken
+	err := r.db.Where("push_token = ?", pushToken).First(&token).Error
+	if err != nil {
+		return nil, err
+	}
+	return &token, nil
+}
+
+// DeactivateAllExcept 登出其他设备（停用除指定设备外的所有设备）
+func (r *DeviceTokenRepository) DeactivateAllExcept(userID int64, deviceID string) error {
+	return r.db.Model(&model.DeviceToken{}).
+		Where("user_id = ? AND device_id != ?", userID, deviceID).
+		Update("is_active", false).Error
+}
+
+// Upsert 创建或更新设备Token
+// 如果设备ID已存在，则更新Token和激活状态；否则创建新记录
+func (r *DeviceTokenRepository) Upsert(token *model.DeviceToken) error {
+	var existing model.DeviceToken
+	err := r.db.Where("device_id = ?", token.DeviceID).First(&existing).Error
+
+	if err == gorm.ErrRecordNotFound {
+		// 创建新记录
+		return r.db.Create(token).Error
+	} else if err != nil {
+		return err
+	}
+
+	// 更新现有记录
+	return r.db.Model(&existing).Updates(map[string]interface{}{
+		"push_token":   token.PushToken,
+		"is_active":    true,
+		"device_name":  token.DeviceName,
+		"last_used_at": time.Now(),
+	}).Error
+}
+
+// UpdateLastUsed 更新最后使用时间
+func (r *DeviceTokenRepository) UpdateLastUsed(deviceID string) error {
+	return r.db.Model(&model.DeviceToken{}).
+		Where("device_id = ?", deviceID).
+		Update("last_used_at", time.Now()).Error
+}
+
+// Deactivate 停用设备
+func (r *DeviceTokenRepository) Deactivate(deviceID string) error {
+	return r.db.Model(&model.DeviceToken{}).
+		Where("device_id = ?", deviceID).
+		Update("is_active", false).Error
+}
+
+// Activate 激活设备
+func (r *DeviceTokenRepository) Activate(deviceID string) error {
+	return r.db.Model(&model.DeviceToken{}).
+		Where("device_id = ?", deviceID).
+		Updates(map[string]interface{}{
+			"is_active":    true,
+			"last_used_at": time.Now(),
+		}).Error
+}
+
+// DeleteByUserID 删除用户所有设备Token
+func (r *DeviceTokenRepository) DeleteByUserID(userID int64) error {
+	return r.db.Where("user_id = ?", userID).Delete(&model.DeviceToken{}).Error
+}
+
+// GetDeviceCountByUserID 获取用户设备数量
+func (r *DeviceTokenRepository) GetDeviceCountByUserID(userID int64) (int64, error) {
+	var count int64
+	err := r.db.Model(&model.DeviceToken{}).
+		Where("user_id = ?", userID).
+		Count(&count).Error
+	return count, err
+}
+
+// GetActiveDeviceCountByUserID 获取用户活跃设备数量
+func (r *DeviceTokenRepository) GetActiveDeviceCountByUserID(userID int64) (int64, error) {
+	var count int64
+	err := r.db.Model(&model.DeviceToken{}).
+		Where("user_id = ? AND is_active = ?", userID, true).
+		Count(&count).Error
+	return count, err
+}
+
+// DeleteInactiveDevices 删除长时间未使用的设备
+func (r *DeviceTokenRepository) DeleteInactiveDevices(before time.Time) error {
+	return r.db.Where("is_active = ? AND last_used_at < ?", false, before).
+		Delete(&model.DeviceToken{}).Error
+}