otter-space-sdk/internal/postgres/relationships.go

package postgres

import (
	"context"
	"fmt"
	"git.dragse.it/anthrove/otter-space-sdk/pkg/models"
	"git.dragse.it/anthrove/otter-space-sdk/pkg/models/pgModels"
	log "github.com/sirupsen/logrus"
	"gorm.io/gorm"
)

func EstablishAnthrovePostToSourceLink(ctx context.Context, db *gorm.DB, anthrovePostID models.AnthrovePostID, anthroveSourceDomain string) error {
	var source pgModels.Source
	var err error

	// Find the source
	err = db.WithContext(ctx).Where("domain = ?", anthroveSourceDomain).First(&source).Error
	if err != nil {
		return err
	}

	// Establish the relationship
	err = db.WithContext(ctx).Create(pgModels.PostReference{
		PostID:   string(anthrovePostID),
		SourceID: source.ID,
	}).Error

	if err != nil {
		return err
	}

	log.WithFields(log.Fields{
		"anthrove_post_id":       anthrovePostID,
		"anthrove_source_domain": anthroveSourceDomain,
	}).Trace("database: created anthrove post to source link")

	return nil
}

func EstablishUserToPostLink(ctx context.Context, db *gorm.DB, anthroveUserID models.AnthroveUserID, anthrovePostID models.AnthrovePostID) error {
	userFavorite := pgModels.UserFavorite{
		UserID: string(anthroveUserID),
		PostID: string(anthrovePostID),
	}

	err := db.WithContext(ctx).Create(&userFavorite).Error
	if err != nil {
		return err
	}

	log.WithFields(log.Fields{
		"anthrove_user_id": anthroveUserID,
		"anthrove_post_id": anthrovePostID,
	}).Trace("database: created user to post link")

	return nil
}

func CheckUserToPostLink(ctx context.Context, db *gorm.DB, anthroveUserID models.AnthroveUserID, anthrovePostID models.AnthrovePostID) (bool, error) {
	var count int64
	err := db.WithContext(ctx).Model(&pgModels.UserFavorite{}).Where("user_id = ? AND post_id = ?", string(anthroveUserID), string(anthrovePostID)).Count(&count).Error
	if err != nil {
		return false, err
	}

	exists := count > 0

	if !exists {
		return false, fmt.Errorf("no post link exists")
	}

	log.WithFields(log.Fields{
		"relationship_exists":           exists,
		"relationship_anthrove_user_id": anthroveUserID,
		"relationship_anthrove_post_id": anthrovePostID,
	}).Trace("database: checked user post relationship")

	return exists, nil
}