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// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package meilisearch
import (
"fmt"
"strings"
)
// Filter represents a filter for meilisearch queries.
// It's just a simple wrapper around a string.
// DO NOT assume that it is a complete implementation.
type Filter interface {
Statement() string
}
type FilterAnd struct {
filters []Filter
}
func (f *FilterAnd) Statement() string {
var statements []string
for _, filter := range f.filters {
if s := filter.Statement(); s != "" {
statements = append(statements, fmt.Sprintf("(%s)", s))
}
}
return strings.Join(statements, " AND ")
}
func (f *FilterAnd) And(filter Filter) *FilterAnd {
f.filters = append(f.filters, filter)
return f
}
type FilterOr struct {
filters []Filter
}
func (f *FilterOr) Statement() string {
var statements []string
for _, filter := range f.filters {
if s := filter.Statement(); s != "" {
statements = append(statements, fmt.Sprintf("(%s)", s))
}
}
return strings.Join(statements, " OR ")
}
func (f *FilterOr) Or(filter Filter) *FilterOr {
f.filters = append(f.filters, filter)
return f
}
type FilterIn string
// NewFilterIn creates a new FilterIn.
// It supports int64 only, to avoid extra works to handle strings with special characters.
func NewFilterIn[T int64](field string, values ...T) FilterIn {
if len(values) == 0 {
return ""
}
vs := make([]string, len(values))
for i, v := range values {
vs[i] = fmt.Sprintf("%v", v)
}
return FilterIn(fmt.Sprintf("%s IN [%v]", field, strings.Join(vs, ", ")))
}
func (f FilterIn) Statement() string {
return string(f)
}
type FilterEq string
// NewFilterEq creates a new FilterEq.
// It supports int64 and bool only, to avoid extra works to handle strings with special characters.
func NewFilterEq[T bool | int64](field string, value T) FilterEq {
return FilterEq(fmt.Sprintf("%s = %v", field, value))
}
func (f FilterEq) Statement() string {
return string(f)
}
type FilterNot string
func NewFilterNot(filter Filter) FilterNot {
return FilterNot(fmt.Sprintf("NOT (%s)", filter.Statement()))
}
func (f FilterNot) Statement() string {
return string(f)
}
type FilterGte string
// NewFilterGte creates a new FilterGte.
// It supports int64 only, to avoid extra works to handle strings with special characters.
func NewFilterGte[T int64](field string, value T) FilterGte {
return FilterGte(fmt.Sprintf("%s >= %v", field, value))
}
func (f FilterGte) Statement() string {
return string(f)
}
type FilterLte string
// NewFilterLte creates a new FilterLte.
// It supports int64 only, to avoid extra works to handle strings with special characters.
func NewFilterLte[T int64](field string, value T) FilterLte {
return FilterLte(fmt.Sprintf("%s <= %v", field, value))
}
func (f FilterLte) Statement() string {
return string(f)
}
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