import { ResetValue } from "../../common/options";
import { CloudEvent, CloudFunction } from "../core";
import { Expression } from "../../params";
import * as options from "../options";
import { SecretParam } from "../../params/types";
/**
 * An object within Google Cloud Storage.
 * Ref: https://github.com/googleapis/google-cloudevents-nodejs/blob/main/cloud/storage/v1/StorageObjectData.ts
 */
export interface StorageObjectData {
    /**
     * The name of the bucket containing this object.
     */
    bucket: string;
    /**
     * Cache-Control directive for the object data, matching
     * [https://tools.ietf.org/html/rfc7234#section-5.2"][RFC 7234 §5.2].
     */
    cacheControl?: string;
    /**
     * Number of underlying components that make up this object. Components are
     * accumulated by compose operations.
     * Attempting to set this field will result in an error.
     */
    componentCount?: number;
    /**
     * Content-Disposition of the object data, matching
     * [https://tools.ietf.org/html/rfc6266][RFC 6266].
     */
    contentDisposition?: string;
    /**
     * Content-Encoding of the object data, matching
     * [https://tools.ietf.org/html/rfc7231#section-3.1.2.2][RFC 7231 §3.1.2.2]
     */
    contentEncoding?: string;
    /**
     * Content-Language of the object data, matching
     * [https://tools.ietf.org/html/rfc7231#section-3.1.3.2][RFC 7231 §3.1.3.2].
     */
    contentLanguage?: string;
    /**
     * Content-Type of the object data, matching
     * [https://tools.ietf.org/html/rfc7231#section-3.1.1.5][RFC 7231 §3.1.1.5].
     * If an object is stored without a Content-Type, it is served as
     * `application/octet-stream`.
     */
    contentType?: string;
    /**
     * CRC32c checksum. For more information about using the CRC32c
     * checksum, see
     * [https://cloud.google.com/storage/docs/hashes-etags#_JSONAPI][Hashes and
     * ETags: Best Practices].
     */
    crc32c?: string;
    /**
     * Metadata of customer-supplied encryption key, if the object is encrypted by
     * such a key.
     */
    customerEncryption?: CustomerEncryption;
    /**
     * HTTP 1.1 Entity tag for the object. See
     * [https://tools.ietf.org/html/rfc7232#section-2.3][RFC 7232 §2.3].
     */
    etag?: string;
    /**
     * The content generation of this object. Used for object versioning.
     * Attempting to set this field will result in an error.
     */
    generation: number;
    /**
     * The ID of the object, including the bucket name, object name, and
     * generation number.
     */
    id: string;
    /**
     * The kind of item this is. For objects, this is always "storage#object".
     */
    kind?: string;
    /**
     * MD5 hash of the data; encoded using base64 as per
     * [https://tools.ietf.org/html/rfc4648#section-4][RFC 4648 §4]. For more
     * information about using the MD5 hash, see
     * [https://cloud.google.com/storage/docs/hashes-etags#_JSONAPI][Hashes and
     * ETags: Best Practices].
     */
    md5Hash?: string;
    /**
     * Media download link.
     */
    mediaLink?: string;
    /**
     * User-provided metadata, in key/value pairs.
     */
    metadata?: {
        [key: string]: string;
    };
    /**
     * The version of the metadata for this object at this generation. Used for
     * preconditions and for detecting changes in metadata. A metageneration
     * number is only meaningful in the context of a particular generation of a
     * particular object.
     */
    metageneration: number;
    /**
     * The name of the object.
     */
    name: string;
    /**
     * The link to this object.
     */
    selfLink?: string;
    /**
     * Content-Length of the object data in bytes, matching
     * [https://tools.ietf.org/html/rfc7230#section-3.3.2][RFC 7230 §3.3.2].
     */
    size: number;
    /**
     * Storage class of the object.
     */
    storageClass: string;
    /**
     * The creation time of the object.
     * Attempting to set this field will result in an error.
     */
    timeCreated?: Date | string;
    /**
     * The deletion time of the object. Will be returned if and only if this
     * version of the object has been deleted.
     */
    timeDeleted?: Date | string;
    /**
     * The time at which the object's storage class was last changed.
     */
    timeStorageClassUpdated?: Date | string;
    /**
     * The modification time of the object metadata.
     */
    updated?: Date | string;
}
/**
 * Metadata of customer-supplied encryption key, if the object is encrypted by
 * such a key.
 */
export interface CustomerEncryption {
    /**
     * The encryption algorithm.
     */
    encryptionAlgorithm?: string;
    /**
     * SHA256 hash value of the encryption key.
     */
    keySha256?: string;
}
/** A CloudEvent that contains StorageObjectData */
export interface StorageEvent extends CloudEvent<StorageObjectData> {
    /** The name of the bucket containing this object. */
    bucket: string;
}
/** StorageOptions extend EventHandlerOptions with a bucket name  */
export interface StorageOptions extends options.EventHandlerOptions {
    /** The name of the bucket containing this object. */
    bucket?: string | Expression<string>;
    /**
     * If true, do not deploy or emulate this function.
     */
    omit?: boolean | Expression<boolean>;
    /**
     * Region where functions should be deployed.
     */
    region?: options.SupportedRegion | string | Expression<string> | ResetValue;
    /**
     * Amount of memory to allocate to a function.
     */
    memory?: options.MemoryOption | Expression<number> | ResetValue;
    /**
     * Timeout for the function in seconds, possible values are 0 to 540.
     * HTTPS functions can specify a higher timeout.
     *
     * @remarks
     * The minimum timeout for a gen 2 function is 1s. The maximum timeout for a
     * function depends on the type of function: Event handling functions have a
     * maximum timeout of 540s (9 minutes). HTTPS and callable functions have a
     * maximum timeout of 36,00s (1 hour). Task queue functions have a maximum
     * timeout of 1,800s (30 minutes)
     */
    timeoutSeconds?: number | Expression<number> | ResetValue;
    /**
     * Min number of actual instances to be running at a given time.
     *
     * @remarks
     * Instances will be billed for memory allocation and 10% of CPU allocation
     * while idle.
     */
    minInstances?: number | Expression<number> | ResetValue;
    /**
     * Max number of instances to be running in parallel.
     */
    maxInstances?: number | Expression<number> | ResetValue;
    /**
     * Number of requests a function can serve at once.
     *
     * @remarks
     * Can only be applied to functions running on Cloud Functions v2.
     * A value of null restores the default concurrency (80 when CPU >= 1, 1 otherwise).
     * Concurrency cannot be set to any value other than 1 if `cpu` is less than 1.
     * The maximum value for concurrency is 1,000.
     */
    concurrency?: number | Expression<number> | ResetValue;
    /**
     * Fractional number of CPUs to allocate to a function.
     *
     * @remarks
     * Defaults to 1 for functions with <= 2GB RAM and increases for larger memory sizes.
     * This is different from the defaults when using the gcloud utility and is different from
     * the fixed amount assigned in Google Cloud Functions generation 1.
     * To revert to the CPU amounts used in gcloud or in Cloud Functions generation 1, set this
     * to the value "gcf_gen1"
     */
    cpu?: number | "gcf_gen1";
    /**
     * Connect cloud function to specified VPC connector.
     */
    vpcConnector?: string | Expression<string> | ResetValue;
    /**
     * Egress settings for VPC connector.
     */
    vpcConnectorEgressSettings?: options.VpcEgressSetting | ResetValue;
    /**
     * Specific service account for the function to run as.
     */
    serviceAccount?: string | Expression<string> | ResetValue;
    /**
     * Ingress settings which control where this function can be called from.
     */
    ingressSettings?: options.IngressSetting | ResetValue;
    /**
     * User labels to set on the function.
     */
    labels?: Record<string, string>;
    secrets?: (string | SecretParam)[];
    /** Whether failed executions should be delivered again. */
    retry?: boolean | Expression<boolean> | ResetValue;
}
/**
 * Event handler sent only when a bucket has enabled object versioning.
 * This event indicates that the live version of an object has become an
 * archived version, either because it was archived or because it was
 * overwritten by the upload of an object of the same name.
 *
 * @param handler - Event handler which is run every time a Google Cloud Storage archival occurs.
 */
export declare function onObjectArchived(handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler sent only when a bucket has enabled object versioning.
 * This event indicates that the live version of an object has become an
 * archived version, either because it was archived or because it was
 * overwritten by the upload of an object of the same name.
 *
 * @param bucket - The name of the bucket containing this object.
 * @param handler - Event handler which is run every time a Google Cloud Storage archival occurs.
 */
export declare function onObjectArchived(bucket: string | Expression<string>, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler sent only when a bucket has enabled object versioning.
 * This event indicates that the live version of an object has become an
 * archived version, either because it was archived or because it was
 * overwritten by the upload of an object of the same name.
 *
 * @param opts - Options that can be set on an individual event-handling function.
 * @param handler - Event handler which is run every time a Google Cloud Storage archival occurs.
 */
export declare function onObjectArchived(opts: StorageOptions, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time a Google Cloud Storage object
 * creation occurs.
 *
 * Sent when a new object (or a new generation of an existing object)
 * is successfully created in the bucket. This includes copying or rewriting
 * an existing object. A failed upload does not trigger this event.
 *
 * @param handler - Event handler which is run every time a Google Cloud Storage object creation occurs.
 */
export declare function onObjectFinalized(handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time a Google Cloud Storage object
 * creation occurs.
 *
 * Sent when a new object (or a new generation of an existing object)
 * is successfully created in the bucket. This includes copying or rewriting
 * an existing object. A failed upload does not trigger this event.
 *
 * @param bucket - The name of the bucket containing this object.
 * @param handler - Event handler which is run every time a Google Cloud Storage object creation occurs.
 */
export declare function onObjectFinalized(bucket: string | Expression<string>, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time a Google Cloud Storage object
 * creation occurs.
 *
 * Sent when a new object (or a new generation of an existing object)
 * is successfully created in the bucket. This includes copying or rewriting
 * an existing object. A failed upload does not trigger this event.
 *
 * @param opts - Options that can be set on an individual event-handling function.
 * @param handler - Event handler which is run every time a Google Cloud Storage object creation occurs.
 */
export declare function onObjectFinalized(opts: StorageOptions, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time a Google Cloud Storage deletion occurs.
 *
 * Sent when an object has been permanently deleted. This includes objects
 * that are overwritten or are deleted as part of the bucket's lifecycle
 * configuration. For buckets with object versioning enabled, this is not
 * sent when an object is archived, even if archival occurs
 * via the `storage.objects.delete` method.
 *
 * @param handler - Event handler which is run every time a Google Cloud Storage object deletion occurs.
 */
export declare function onObjectDeleted(handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time a Google Cloud Storage deletion occurs.
 *
 * Sent when an object has been permanently deleted. This includes objects
 * that are overwritten or are deleted as part of the bucket's lifecycle
 * configuration. For buckets with object versioning enabled, this is not
 * sent when an object is archived, even if archival occurs
 * via the `storage.objects.delete` method.
 *
 * @param bucket - The name of the bucket containing this object.
 * @param handler - Event handler which is run every time a Google Cloud Storage object deletion occurs.
 */
export declare function onObjectDeleted(bucket: string | Expression<string>, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time a Google Cloud Storage deletion occurs.
 *
 * Sent when an object has been permanently deleted. This includes objects
 * that are overwritten or are deleted as part of the bucket's lifecycle
 * configuration. For buckets with object versioning enabled, this is not
 * sent when an object is archived, even if archival occurs
 * via the `storage.objects.delete` method.
 *
 * @param opts - Options that can be set on an individual event-handling function.
 * @param handler - Event handler which is run every time a Google Cloud Storage object deletion occurs.
 */
export declare function onObjectDeleted(opts: StorageOptions, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time the metadata of an existing object
 * changes.
 *
 * @param bucketOrOptsOrHandler - Options or string that may (or may not) define the bucket to be used.
 * @param handler - Event handler which is run every time a Google Cloud Storage object metadata update occurs.
 */
export declare function onObjectMetadataUpdated(handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time the metadata of an existing object
 * changes.
 *
 * @param bucket - The name of the bucket containing this object.
 * @param handler - Event handler which is run every time a Google Cloud Storage object metadata update occurs.
 */
export declare function onObjectMetadataUpdated(bucket: string | Expression<string>, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;
/**
 * Event handler which fires every time the metadata of an existing object
 * changes.
 *
 * @param opts - Options that can be set on an individual event-handling function.
 * @param handler - Event handler which is run every time a Google Cloud Storage object metadata update occurs.
 */
export declare function onObjectMetadataUpdated(opts: StorageOptions, handler: (event: StorageEvent) => any | Promise<any>): CloudFunction<StorageEvent>;