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fix(server): enable original key filter #57

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Nov 27, 2024
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140 changes: 82 additions & 58 deletions mongox/pagination.go
Original file line number Diff line number Diff line change
Expand Up @@ -27,64 +27,7 @@ func (c *Collection) Paginate(ctx context.Context, rawFilter any, s *usecasex.So
filter = And(rawFilter, "", pFilter)
}

sortKey := idKey
sortOrder := 1
if s != nil && s.Key != "" {
sortKey = s.Key
if s.Reverted {
sortOrder = -1
}
}

if p.Cursor != nil && p.Cursor.Last != nil {
sortOrder *= -1
}

sort := bson.D{{Key: sortKey, Value: sortOrder}}
if sortKey != idKey {
sort = append(sort, bson.E{Key: idKey, Value: sortOrder})
}

findOpts := options.Find().
SetSort(sort).
SetLimit(limit(*p))

if p.Offset != nil {
findOpts.SetSkip(p.Offset.Offset)
}

cursor, err := c.collection.Find(ctx, filter, append([]*options.FindOptions{findOpts}, opts...)...)
if err != nil {
return nil, rerror.ErrInternalByWithContext(ctx, fmt.Errorf("failed to find: %w", err))
}
defer func() {
_ = cursor.Close(ctx)
}()

count, err := c.collection.CountDocuments(ctx, rawFilter)
if err != nil {
return nil, rerror.ErrInternalByWithContext(ctx, fmt.Errorf("failed to count: %w", err))
}

items, startCursor, endCursor, hasMore, err := consume(ctx, cursor, limit(*p))
if err != nil {
return nil, err
}

if p.Cursor != nil && p.Cursor.Last != nil {
reverse(items)
startCursor, endCursor = endCursor, startCursor
}

for _, item := range items {
if err := consumer.Consume(item); err != nil {
return nil, err
}
}

hasNextPage, hasPreviousPage := pageInfo(p, hasMore)

return usecasex.NewPageInfo(count, startCursor, endCursor, hasNextPage, hasPreviousPage), nil
return c.paginate(ctx, rawFilter, s, p, filter, consumer, opts)
}

func (c *Collection) PaginateAggregation(ctx context.Context, pipeline []any, s *usecasex.Sort, p *usecasex.Pagination, consumer Consumer, opts ...*options.AggregateOptions) (*usecasex.PageInfo, error) {
Expand Down Expand Up @@ -327,3 +270,84 @@ func sortDirection(p usecasex.Pagination, s *usecasex.Sort) int {
}
return 1
}

func (c *Collection) PaginateProject(ctx context.Context, rawFilter any, s *usecasex.Sort, p *usecasex.Pagination, consumer Consumer, opts ...*options.FindOptions) (*usecasex.PageInfo, error) {
if p == nil || (p.Cursor == nil && p.Offset == nil) {
return nil, nil
}

pFilter, err := c.pageFilter(ctx, *p, s)
if err != nil {
return nil, rerror.ErrInternalByWithContext(ctx, err)
}

filter := rawFilter
if pFilter != nil {
filter = AddCondition(rawFilter, "", pFilter)
}

return c.paginate(ctx, rawFilter, s, p, filter, consumer, opts)

}

func (c *Collection) paginate(ctx context.Context, rawFilter any, s *usecasex.Sort, p *usecasex.Pagination, filter any, consumer Consumer, opts []*options.FindOptions) (*usecasex.PageInfo, error) {

sortKey := idKey
sortOrder := 1
if s != nil && s.Key != "" {
sortKey = s.Key
if s.Reverted {
sortOrder = -1
}
}

if p.Cursor != nil && p.Cursor.Last != nil {
sortOrder *= -1
}

sort := bson.D{{Key: sortKey, Value: sortOrder}}
if sortKey != idKey {
sort = append(sort, bson.E{Key: idKey, Value: sortOrder})
}

findOpts := options.Find().
SetSort(sort).
SetLimit(limit(*p))

if p.Offset != nil {
findOpts.SetSkip(p.Offset.Offset)
}

cursor, err := c.collection.Find(ctx, filter, append([]*options.FindOptions{findOpts}, opts...)...)
if err != nil {
return nil, rerror.ErrInternalByWithContext(ctx, fmt.Errorf("failed to find: %w", err))
}
defer func() {
_ = cursor.Close(ctx)
}()

count, err := c.collection.CountDocuments(ctx, rawFilter)
if err != nil {
return nil, rerror.ErrInternalByWithContext(ctx, fmt.Errorf("failed to count: %w", err))
}

items, startCursor, endCursor, hasMore, err := consume(ctx, cursor, limit(*p))
if err != nil {
return nil, err
}

if p.Cursor != nil && p.Cursor.Last != nil {
reverse(items)
startCursor, endCursor = endCursor, startCursor
}

for _, item := range items {
if err := consumer.Consume(item); err != nil {
return nil, err
}
}

hasNextPage, hasPreviousPage := pageInfo(p, hasMore)

return usecasex.NewPageInfo(count, startCursor, endCursor, hasNextPage, hasPreviousPage), nil
}
55 changes: 55 additions & 0 deletions mongox/util.go
Original file line number Diff line number Diff line change
Expand Up @@ -157,3 +157,58 @@ func And(filter interface{}, key string, f interface{}) interface{} {
}
return AppendE(filter, bson.E{Key: key, Value: f})
}

func isEmptyCondition(condition interface{}) bool {
switch c := condition.(type) {
case bson.M:
return len(c) == 0
case bson.D:
return len(c) == 0
case bson.A:
return len(c) == 0
case []bson.M:
return len(c) == 0
case []bson.D:
return len(c) == 0
case []bson.A:
return len(c) == 0
case []interface{}:
return len(c) == 0
default:
return false
}
}

func AddCondition(filter interface{}, key string, condition interface{}) interface{} {
if condition == nil || isEmptyCondition(condition) {
return filter
}

filterMap, ok := filter.(bson.M)
if !ok || len(filterMap) == 0 {
filterMap = bson.M{}
}

var newCondition interface{}
if key != "" {
if _, exists := filterMap[key]; exists {
return filter
}
newCondition = bson.M{key: condition}
} else {
newCondition = condition
}

if existingAnd, ok := filterMap["$and"].(bson.A); ok {
filterMap["$and"] = append(existingAnd, newCondition)
} else {
existingConditions := make(bson.A, 0)
for k, v := range filterMap {
if k != "$and" {
existingConditions = append(existingConditions, bson.M{k: v})
}
}
filterMap["$and"] = append(existingConditions, newCondition)
}
return filterMap
}
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