✨ CRUD of subscriptions

2024-09-17 00:12:09 +08:00
parent 45698db199
commit c01714b3fc
8 changed files with 379 additions and 3 deletions
--- a/pkg/internal/services/subscriptions.go
+++ b/pkg/internal/services/subscriptions.go
@@ -0,0 +1,136 @@
+package services
+
+import (
+	"errors"
+	"fmt"
+
+	"git.solsynth.dev/hydrogen/interactive/pkg/internal/database"
+	"git.solsynth.dev/hydrogen/interactive/pkg/internal/models"
+	"gorm.io/gorm"
+)
+
+func GetSubscriptionOnUser(user models.Account, target models.Account) (*models.Subscription, error) {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND account_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, fmt.Errorf("unable to get subscription: %v", err)
+	}
+	return &subscription, nil
+}
+
+func GetSubscriptionOnTag(user models.Account, target models.Tag) (*models.Subscription, error) {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND tag_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, fmt.Errorf("unable to get subscription: %v", err)
+	}
+	return &subscription, nil
+}
+
+func GetSubscriptionOnCategory(user models.Account, target models.Category) (*models.Subscription, error) {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND category_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, fmt.Errorf("unable to get subscription: %v", err)
+	}
+	return &subscription, nil
+}
+
+func SubscribeToUser(user models.Account, target models.Account) (models.Subscription, error) {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND account_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return subscription, fmt.Errorf("subscription already exists")
+		}
+		return subscription, fmt.Errorf("unable to check subscription is exists or not: %v", err)
+	}
+
+	subscription = models.Subscription{
+		FollowerID: user.ID,
+		AccountID:  &target.ID,
+	}
+
+	err := database.C.Save(&subscription).Error
+	return subscription, err
+}
+
+func SubscribeToTag(user models.Account, target models.Tag) (models.Subscription, error) {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND tag_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return subscription, fmt.Errorf("subscription already exists")
+		}
+		return subscription, fmt.Errorf("unable to check subscription is exists or not: %v", err)
+	}
+
+	subscription = models.Subscription{
+		FollowerID: user.ID,
+		TagID:      &target.ID,
+	}
+
+	err := database.C.Save(&subscription).Error
+	return subscription, err
+}
+
+func SubscribeToCategory(user models.Account, target models.Category) (models.Subscription, error) {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND category_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return subscription, fmt.Errorf("subscription already exists")
+		}
+		return subscription, fmt.Errorf("unable to check subscription is exists or not: %v", err)
+	}
+
+	subscription = models.Subscription{
+		FollowerID: user.ID,
+		CategoryID: &target.ID,
+	}
+
+	err := database.C.Save(&subscription).Error
+	return subscription, err
+}
+
+func UnsubscribeFromUser(user models.Account, target models.Account) error {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND account_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("subscription does not exist")
+		}
+		return fmt.Errorf("unable to check subscription is exists or not: %v", err)
+	}
+
+	err := database.C.Delete(&subscription).Error
+	return err
+}
+
+func UnsubscribeFromTag(user models.Account, target models.Tag) error {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND tag_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("subscription does not exist")
+		}
+		return fmt.Errorf("unable to check subscription is exists or not: %v", err)
+	}
+
+	err := database.C.Delete(&subscription).Error
+	return err
+}
+
+func UnsubscribeFromCategory(user models.Account, target models.Category) error {
+	var subscription models.Subscription
+	if err := database.C.Where("follower_id = ? AND category_id = ?", user.ID, target.ID).First(&subscription).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("subscription does not exist")
+		}
+		return fmt.Errorf("unable to check subscription is exists or not: %v", err)
+	}
+
+	err := database.C.Delete(&subscription).Error
+	return err
+}