// Изменено: 2026-04-09
// GetQueueAttributesV1 — возвращает атрибуты очереди тенанта.
package gosqs

import (
"fmt"
"net/http"
"strconv"
"strings"

"shared-sqs/app/interfaces"
"shared-sqs/app/models"
"shared-sqs/app/utils"
"github.com/mitchellh/copystructure"
log "github.com/sirupsen/logrus"
)

func GetQueueAttributesV1(req *http.Request) (int, interfaces.AbstractResponseBody) {
requestBody := models.NewGetQueueAttributesRequest()
ok := utils.REQUEST_TRANSFORMER(requestBody, req, false)
if !ok {
log.Error("Invalid Request - GetQueueAttributesV1")
return utils.CreateErrorResponseV1("InvalidParameterValue", true)
}
if requestBody.QueueUrl == "" {
log.Error("Missing QueueUrl - GetQueueAttributesV1")
return utils.CreateErrorResponseV1("InvalidParameterValue", true)
}

t := getTenantFromContext(req)
if t == nil {
return utils.CreateErrorResponseV1("InvalidClientTokenId", true)
}

requestedAttributes := func() map[string]bool {
attrs := map[string]bool{}
if len(requestBody.AttributeNames) == 0 {
return map[string]bool{"All": true}
}
for _, attr := range requestBody.AttributeNames {
if "All" == attr {
return map[string]bool{"All": true}
}
attrs[attr] = true
}
return attrs
}()

dupe, _ := copystructure.Copy(models.AvailableQueueAttributes)
includedAttributes, _ := dupe.(map[string]bool)
_, ok = requestedAttributes["All"]
if !ok {
for attr := range includedAttributes {
if _, ok := requestedAttributes[attr]; !ok {
delete(includedAttributes, attr)
}
}
}

uriSegments := strings.Split(requestBody.QueueUrl, "/")
queueName := uriSegments[len(uriSegments)-1]
key := tenantQueueKey(t.AccessKey, queueName)

log.Infof("Get Queue Attributes: %s (tenant: %s)", queueName, t.ID)
queueAttributes := make([]models.Attribute, 0)

models.SyncQueues.RLock()
defer models.SyncQueues.RUnlock()
queue, ok := models.SyncQueues.Queues[key]
if !ok {
log.Errorf("Get Queue Attributes: %s queue does not exist for tenant %s", queueName, t.ID)
return utils.CreateErrorResponseV1("QueueNotFound", true)
}

if _, ok := includedAttributes["DelaySeconds"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "DelaySeconds", Value: strconv.Itoa(queue.DelaySeconds)})
}
if _, ok := includedAttributes["MaximumMessageSize"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "MaximumMessageSize", Value: strconv.Itoa(queue.MaximumMessageSize)})
}
if _, ok := includedAttributes["MessageRetentionPeriod"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "MessageRetentionPeriod", Value: strconv.Itoa(queue.MessageRetentionPeriod)})
}
if _, ok := includedAttributes["ReceiveMessageWaitTimeSeconds"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "ReceiveMessageWaitTimeSeconds", Value: strconv.Itoa(queue.ReceiveMessageWaitTimeSeconds)})
}
if _, ok := includedAttributes["VisibilityTimeout"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "VisibilityTimeout", Value: strconv.Itoa(queue.VisibilityTimeout)})
}
if _, ok := includedAttributes["ApproximateNumberOfMessages"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "ApproximateNumberOfMessages", Value: strconv.Itoa(len(queue.Messages))})
}
if _, ok := includedAttributes["ApproximateNumberOfMessagesNotVisible"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "ApproximateNumberOfMessagesNotVisible", Value: strconv.Itoa(numberOfHiddenMessagesInQueue(*queue))})
}
if _, ok := includedAttributes["CreatedTimestamp"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "CreatedTimestamp", Value: "0000000000"})
}
if _, ok := includedAttributes["LastModifiedTimestamp"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "LastModifiedTimestamp", Value: "0000000000"})
}
if _, ok := includedAttributes["QueueArn"]; ok {
queueAttributes = append(queueAttributes, models.Attribute{Name: "QueueArn", Value: queue.Arn})
}
if _, ok := includedAttributes["RedrivePolicy"]; ok && queue.DeadLetterQueue != nil {
queueAttributes = append(queueAttributes, models.Attribute{
Name:  "RedrivePolicy",
Value: fmt.Sprintf(`{"maxReceiveCount":"%d", "deadLetterTargetArn":"%s"}`, queue.MaxReceiveCount, queue.DeadLetterQueue.Arn),
})
}

respStruct := models.GetQueueAttributesResponse{
Xmlns:    models.BaseXmlns,
Result:   models.GetQueueAttributesResult{Attrs: queueAttributes},
Metadata: models.BaseResponseMetadata,
}
return http.StatusOK, respStruct
}