From 14d9a95431076ee785aacbadb52567d1c11637ea Mon Sep 17 00:00:00 2001
From: luc662 <lucas_bonfil@hotmail.com>
Date: Thu, 4 Sep 2025 23:23:06 +0000
Subject: [PATCH] se agrego el contract para traer vacuans paginadas

---
 .../statedb/couchdb/indexes/indexVacunas.json |  2 +-
 .../chaincode-go/chaincode/smartcontract.go   | 59 +++++++++++++++++++
 2 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/asset-transfer-basic/chaincode-go/chaincode/META-INF/statedb/couchdb/indexes/indexVacunas.json b/asset-transfer-basic/chaincode-go/chaincode/META-INF/statedb/couchdb/indexes/indexVacunas.json
index e42d5545..12164d97 100644
--- a/asset-transfer-basic/chaincode-go/chaincode/META-INF/statedb/couchdb/indexes/indexVacunas.json
+++ b/asset-transfer-basic/chaincode-go/chaincode/META-INF/statedb/couchdb/indexes/indexVacunas.json
@@ -1,6 +1,6 @@
 {
   "index": {
-    "fields": ["patientDocumentNumber", "status", "expirationDate"]
+    "fields": ["patientDocumentNumber", "status"]
   },
   "ddoc": "vacunas-index",
   "name": "indexVacunas",
diff --git a/asset-transfer-basic/chaincode-go/chaincode/smartcontract.go b/asset-transfer-basic/chaincode-go/chaincode/smartcontract.go
index 7d4d7b4c..eadb2dc8 100644
--- a/asset-transfer-basic/chaincode-go/chaincode/smartcontract.go
+++ b/asset-transfer-basic/chaincode-go/chaincode/smartcontract.go
@@ -469,6 +469,65 @@ func (s *SmartContract) GetMultipleVacunas(ctx contractapi.TransactionContextInt
 	return vacunas, nil
 }
 
+type ResultadoPaginadoVacunas struct {
+	Vacunas  []*Vacuna `json:"componentes"`
+	Bookmark string    `json:"bookmark"`
+}
+
+func (s *SmartContract) GetVacunasPorDniPaginado(
+	ctx contractapi.TransactionContextInterface,
+	dni string,
+	pageSize int32,
+	bookmark string,
+) (*ResultadoPaginadoVacunas, error) {
+
+	if dni == "" {
+		return nil, fmt.Errorf("el dni es obligatorio")
+	}
+
+	query := map[string]interface{}{
+		"selector": map[string]interface{}{
+			"patientDocumentNumber": dni,
+		},
+		// primero probamos sin use_index
+		//	"use_index": []string{"vacunas-index", "indexVacunas"},
+		"limit": pageSize,
+	}
+	if bookmark != "" {
+		query["bookmark"] = bookmark
+	}
+	queryBytes, err := json.Marshal(query)
+	if err != nil {
+		return nil, fmt.Errorf("error al generar la query: %v", err)
+	}
+	resultsIterator, metadata, err := ctx.GetStub().GetQueryResultWithPagination(string(queryBytes), pageSize, bookmark)
+	if err != nil {
+		return nil, fmt.Errorf("error al ejecutar la query: %v", err)
+	}
+	defer resultsIterator.Close()
+	var vacunas []*Vacuna
+	for resultsIterator.HasNext() {
+		response, iterErr := resultsIterator.Next()
+		if iterErr != nil {
+			return nil, iterErr
+		}
+		var vacuna Vacuna
+		if err := json.Unmarshal(response.Value, &vacuna); err != nil {
+			return nil, fmt.Errorf("error al parsear vacuna: %v", err)
+		}
+		vacunas = append(vacunas, &vacuna)
+	}
+	if vacunas == nil {
+		vacunas = []*Vacuna{}
+	}
+	resultado := &ResultadoPaginadoVacunas{
+		Vacunas:  vacunas,
+		Bookmark: metadata.Bookmark,
+	}
+
+	return resultado, nil
+}
+
 func (s *SmartContract) GetVacunasPorDniYEstado(ctx contractapi.TransactionContextInterface, dni string, estado string) ([]*Vacuna, error) {
 	if dni == "" {
 		return nil, fmt.Errorf("el dni es obligatorio")