Initial commit

server/dao/tag.go

@@ -0,0 +1,60 @@
+package dao
+
+import (
+	"errors"
+	"nysoure/server/model"
+
+	"gorm.io/gorm"
+)
+
+func CreateTag(tag string) (model.Tag, error) {
+	// Create a new tag in the database
+	t := model.Tag{Name: tag}
+	if err := db.Create(&t).Error; err != nil {
+		return model.Tag{}, err
+	}
+	return t, nil
+}
+
+func SearchTag(keyword string) ([]model.Tag, error) {
+	// Search for a tag by its name in the database
+	var t []model.Tag
+	if err := db.Model(&model.Tag{}).Where("name Like ?", "%"+keyword+"%").Limit(10).Find(&t).Error; err != nil {
+		return nil, err
+	}
+	return t, nil
+}
+
+func DeleteTag(id uint) error {
+	// Delete a tag from the database
+	t := model.Tag{}
+	t.ID = id
+	if err := db.Delete(&t).Error; err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		return err
+	}
+	return nil
+}
+
+func GetTagByID(id uint) (model.Tag, error) {
+	// Retrieve a tag by its ID from the database
+	var t model.Tag
+	if err := db.First(&t, id).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return model.Tag{}, model.NewNotFoundError("Tag not found")
+		}
+		return model.Tag{}, err
+	}
+	return t, nil
+}
+
+func GetTagByName(name string) (model.Tag, error) {
+	// Retrieve a tag by its name from the database
+	var t model.Tag
+	if err := db.Where("name = ?", name).First(&t).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return model.Tag{}, model.NewNotFoundError("Tag not found")
+		}
+		return model.Tag{}, err
+	}
+	return t, nil
+}