package engine

import (
	"strconv"
	"testing"

	"gitea.maximumdirect.net/eric/ConfigKit/internal/document"
)

func BenchmarkSequenceMixedUpsert(b *testing.B) {
	for _, size := range []int{128, 512, 2048} {
		b.Run(strconv.Itoa(size), func(b *testing.B) {
			lower := benchmarkSequenceRecords(0, size, "lower")
			higher := benchmarkSequenceRecords(size/2, size, "higher")
			context := sequenceCombinationContext{destination: Keys("items")}
			identityFields := []string{"id"}
			b.ReportAllocs()
			b.ResetTimer()
			for range b.N {
				if _, diagnostics := combineIdentifiedSequences(
					lower, higher, sequenceModeUpsert, identityFields, context,
				); len(diagnostics) != 0 {
					b.Fatal(diagnostics)
				}
			}
		})
	}
}

func benchmarkSequenceRecords(start, count int, value string) *document.Node {
	items := make([]*document.Node, count)
	for index := range count {
		items[index] = &document.Node{
			Kind: document.Mapping,
			Mapping: []document.Entry{
				{Key: "id", Value: &document.Node{Kind: document.String, Text: "item-" + strconv.Itoa(start+index)}},
				{Key: "value", Value: &document.Node{Kind: document.String, Text: value}},
			},
		}
	}
	return &document.Node{Kind: document.Sequence, Sequence: items}
}