yyewolf/bar

package mongo

import (
    "bar/internal/models"
    "context"

    "go.mongodb.org/mongo-driver/bson"
    "go.mongodb.org/mongo-driver/mongo"
    "go.mongodb.org/mongo-driver/mongo/options"
)

func (b *Backend) GetAllCategories(ctx context.Context) ([]*models.Category, error) {
    ctx, cancel := b.TimeoutContext(ctx)
    defer cancel()

    var categories []*models.Category
    // All categories sorted by position
    cursor, err := b.db.Collection(CategoriesCollection).Find(ctx, bson.M{
        "$or": []bson.M{
            {
                "deleted_at": bson.M{
                    "$exists": false,
                },
            },
            {
                "deleted_at": nil,
            },
        },
    }, options.Find().SetSort(bson.M{"position": 1}))
    if err != nil {
        if err == mongo.ErrNoDocuments {
            return categories, nil
        }
        return nil, err
    }

    if err := cursor.All(ctx, &categories); err != nil {
        return nil, err
    }

    return categories, nil
}

func (b *Backend) GetDeletedCategories(ctx context.Context, page uint64, size uint64) ([]*models.Category, error) {
    ctx, cancel := b.TimeoutContext(ctx)
    defer cancel()

    var accs []*models.Category
    cursor, err := b.db.Collection(CategoriesCollection).Find(ctx,
        bson.M{
            "deleted_at": bson.M{
                "$ne": nil,
            },
        },
        options.Find().SetSkip(int64(page*size)).SetLimit(int64(size)))
    if err != nil {
        return nil, err
    }

    if err := cursor.All(ctx, &accs); err != nil {
        return nil, err
    }

    return accs, nil
}

func (b *Backend) CountDeletedCategories(ctx context.Context) (uint64, error) {
    ctx, cancel := b.TimeoutContext(ctx)
    defer cancel()

    count, err := b.db.Collection(CategoriesCollection).CountDocuments(ctx, bson.M{
        "deleted_at": bson.M{
            "$ne": nil,
        },
    })
    if err != nil {
        return 0, err
    }

    return uint64(count), nil
}