dboperations/operations/condition.go

package operations

import "gorm.io/gorm"

type Conditions struct {
	queries   []string
	queryArgs [][]any
}

func NewConditions() *Conditions {
	return &Conditions{
		queries:   make([]string, 0),
		queryArgs: make([][]any, 0),
	}
}

func (clause *Conditions) Equal(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" = ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) Like(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" LIKE ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) In(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" IN ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) NotIn(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" NOT IN ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) Not(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" != ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) LessThan(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" < ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) LessThanAndEqual(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" <= ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) GreaterThan(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" > ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) GreaterThanAndEqual(columnName string, value any) *Conditions {
	clause.queries = append(clause.queries, columnName+" >= ?")
	clause.queryArgs = append(clause.queryArgs, []any{value})
	return clause
}

func (clause *Conditions) where(db *gorm.DB) *gorm.DB {
	for i, query := range clause.queries {
		db = db.Where(query, clause.queryArgs[i]...)
	}

	return db
}

func (clause *Conditions) or(db *gorm.DB) *gorm.DB {
	for i, query := range clause.queries {
		db = db.Or(query, clause.queryArgs[i]...)
	}

	return db
}

func (clause *Conditions) having(db *gorm.DB) *gorm.DB {
	for i, query := range clause.queries {
		db = db.Having(query, clause.queryArgs[i]...)
	}

	return db
}