✨ CRUD of subscriptions

pkg/internal/services/accounts.go

@@ -3,6 +3,8 @@ package services
 import (
 	"context"
 	"fmt"
+	"time"
+
 	"git.solsynth.dev/hydrogen/dealer/pkg/hyper"
 	"git.solsynth.dev/hydrogen/dealer/pkg/proto"
 	"git.solsynth.dev/hydrogen/interactive/pkg/internal/database"
@@ -10,9 +12,16 @@ import (
 	"git.solsynth.dev/hydrogen/interactive/pkg/internal/models"
 	"github.com/rs/zerolog/log"
 	"github.com/samber/lo"
-	"time"
 )
 
+func GetAccountWithID(id uint) (models.Account, error) {
+	var account models.Account
+	if err := database.C.Where("id = ?", id).First(&account).Error; err != nil {
+		return account, fmt.Errorf("unable to get account by id: %v", err)
+	}
+	return account, nil
+}
+
 func ListAccountFriends(user models.Account) ([]models.Account, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
 	defer cancel()

pkg/internal/services/categories.go

@@ -61,6 +61,16 @@ func DeleteCategory(category models.Category) error {
 	return database.C.Delete(category).Error
 }
 
+func GetTagWithID(id uint) (models.Tag, error) {
+	var tag models.Tag
+	if err := database.C.Where(models.Tag{
+		BaseModel: hyper.BaseModel{ID: id},
+	}).First(&tag).Error; err != nil {
+		return tag, err
+	}
+	return tag, nil
+}
+
 func GetTagOrCreate(alias, name string) (models.Tag, error) {
 	alias = strings.ToLower(alias)
 	var tag models.Tag

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
+}