Sync from /srv/compose/unified-media-manager

internal/service/query.go

@@ -0,0 +1,41 @@
+package service
+
+import (
+	"fmt"
+	"strings"
+)
+
+type QueryBuilder struct {
+	conditions []string
+	args       []interface{}
+	idx        int
+}
+
+func NewQueryBuilder(startIdx int) *QueryBuilder {
+	return &QueryBuilder{idx: startIdx}
+}
+
+func (qb *QueryBuilder) Add(condition string, arg interface{}) {
+	qb.conditions = append(qb.conditions, fmt.Sprintf(condition, qb.idx))
+	qb.args = append(qb.args, arg)
+	qb.idx++
+}
+
+func (qb *QueryBuilder) AddLiteral(condition string) {
+	qb.conditions = append(qb.conditions, condition)
+}
+
+func (qb *QueryBuilder) Where() string {
+	if len(qb.conditions) == 0 {
+		return ""
+	}
+	return " WHERE " + strings.Join(qb.conditions, " AND ")
+}
+
+func (qb *QueryBuilder) Args() []interface{} {
+	return qb.args
+}
+
+func (qb *QueryBuilder) Idx() int {
+	return qb.idx
+}