package service

import (
	"context"
	"strings"
	"testing"

	"github.com/Tencent/WeKnora/internal/models/chat"
	"github.com/Tencent/WeKnora/internal/types"
	"github.com/stretchr/testify/require"
)

func TestWikiPageInputBudgetRejectsOversizedCombinedEvidenceWithoutCallingModel(t *testing.T) {
	input := map[string]string{
		"NewContent":           strings.Repeat("证", wikiPageInputRunes/2),
		"ExistingContent":      strings.Repeat("据", wikiPageInputRunes/2),
		"SharedSourceContexts": "不能丢弃的限定条件",
	}
	calls := 0
	model := &wikiScriptedChat{id: t.Name(), call: func(context.Context, []chat.Message) (*types.ChatResponse, error) {
		calls++
		return &types.ChatResponse{Content: "SUMMARY: invalid\nShould never be called"}, nil
	}}
	output, err := (&wikiIngestService{}).generateWikiPageModification(context.Background(), model, input)
	require.ErrorContains(t, err, "未截断证据或标记完成")
	require.Empty(t, output)
	require.Zero(t, calls, "oversize is not an output repair or a provider retry")
	require.Equal(t, "不能丢弃的限定条件", input["SharedSourceContexts"])
	require.Len(t, input["NewContent"], wikiPageInputRunes/2*3)
}

func TestWikiPageInputBudgetCountsUnicodeAndIncludesAllContext(t *testing.T) {
	require.NoError(t, validateWikiPageInputBudget(map[string]string{"NewContent": strings.Repeat("中", wikiPageInputRunes)}))
	require.Error(t, validateWikiPageInputBudget(map[string]string{
		"NewContent": strings.Repeat("中", wikiPageInputRunes), "DeletedContent": "一",
	}))
}