import { Observable } from 'rxjs';
import { BaseMetadata } from './base-metadata.data.model';
import { User } from './user.data.model';
/**
 * Feature types that can generate activities.
 */
export type ActivityFeatureType = 'comment' | 'reaction' | 'recorder' | 'crdt' | 'custom';
/**
 * Comment action type constants following the `entity_type.action` naming pattern.
 * Annotation-level actions use `comment_annotation.*`, comment-level use `comment.*`.
 */
export declare const CommentActivityActionTypes: {
    readonly ANNOTATION_ADD: "comment_annotation.add";
    readonly ANNOTATION_DELETE: "comment_annotation.delete";
    readonly COMMENT_ADD: "comment.add";
    readonly COMMENT_UPDATE: "comment.update";
    readonly COMMENT_DELETE: "comment.delete";
    readonly STATUS_CHANGE: "comment_annotation.status_change";
    readonly PRIORITY_CHANGE: "comment_annotation.priority_change";
    readonly ASSIGN: "comment_annotation.assign";
    readonly ACCESS_MODE_CHANGE: "comment_annotation.access_mode_change";
    readonly CUSTOM_LIST_CHANGE: "comment_annotation.custom_list_change";
    readonly APPROVE: "comment_annotation.approve";
    readonly ACCEPT: "comment.accept";
    readonly REJECT: "comment.reject";
    readonly SUGGESTION_ACCEPT: "comment_annotation.suggestion_accept";
    readonly SUGGESTION_REJECT: "comment_annotation.suggestion_reject";
    readonly REACTION_ADD: "comment.reaction_add";
    readonly REACTION_DELETE: "comment.reaction_delete";
    readonly SUBSCRIBE: "comment_annotation.subscribe";
    readonly UNSUBSCRIBE: "comment_annotation.unsubscribe";
};
export type CommentActivityActionType = typeof CommentActivityActionTypes[keyof typeof CommentActivityActionTypes];
/**
 * Recorder action type constants following the `recording.*` naming pattern.
 */
export declare const RecorderActivityActionTypes: {
    readonly RECORDING_ADD: "recording.add";
    readonly RECORDING_DELETE: "recording.delete";
};
export type RecorderActivityActionType = typeof RecorderActivityActionTypes[keyof typeof RecorderActivityActionTypes];
/**
 * Reaction action type constants following the `reaction.*` naming pattern.
 */
export declare const ReactionActivityActionTypes: {
    readonly REACTION_ADD: "reaction.add";
    readonly REACTION_DELETE: "reaction.delete";
};
export type ReactionActivityActionType = typeof ReactionActivityActionTypes[keyof typeof ReactionActivityActionTypes];
/**
 * CRDT action type constants following the `crdt.*` naming pattern.
 */
export declare const CrdtActivityActionTypes: {
    readonly EDITOR_EDIT: "crdt.editor_edit";
};
export type CrdtActivityActionType = typeof CrdtActivityActionTypes[keyof typeof CrdtActivityActionTypes];
/**
 * Represents a single from/to change pair.
 * `from` is always present (null for 'added' events) for uniform structure.
 */
export interface ActivityChange<T = unknown> {
    from?: T | null;
    to?: T | null;
}
/**
 * Dynamic change tracking. Keys are domain-specific (e.g., 'status', 'commentText', 'assignedTo').
 * No fixed keys — activities span multiple features.
 */
export interface ActivityChanges {
    [key: string]: ActivityChange | undefined;
}
/**
 * Metadata for activity records. Extends BaseMetadata with denormalized IDs
 * for efficient querying at the organization level.
 */
export declare class ActivityMetadata extends BaseMetadata {
    [key: string]: any;
}
/**
 * Core activity record representing a single activity event.
 *
 * @typeParam TEntity - Type of the parent entity snapshot (e.g., CommentAnnotation)
 * @typeParam TTarget - Type of the sub-entity snapshot (e.g., Comment)
 */
export declare class ActivityRecord<TEntity = unknown, TTarget = unknown> {
    /** Auto-generated unique ID */
    id: string;
    /** Feature that generated this activity */
    featureType: ActivityFeatureType;
    /** Action that occurred, following `entity_type.action` pattern */
    actionType: string;
    /** Event type that occurred */
    eventType?: string;
    /** User who performed the action */
    actionUser: User;
    /** Server timestamp (set by backend) */
    timestamp: number;
    /** Denormalized IDs for querying */
    metadata: ActivityMetadata;
    /** ID of the parent entity (annotationId, recordingId, etc.) */
    targetEntityId: string;
    /** ID of the sub-entity acted on (commentId within annotation, null for entity-level actions) */
    targetSubEntityId?: string | null;
    /** Linear-style from/to change pairs */
    changes?: ActivityChanges;
    /** Full parent entity snapshot at time of action */
    entityData?: TEntity;
    /** Sub-entity snapshot (or user-provided data for custom activities) */
    entityTargetData?: TTarget;
    /** Display message template — ONLY for custom activities */
    displayMessageTemplate?: string;
    /** Template variable values — ONLY for custom activities */
    displayMessageTemplateData?: Record<string, unknown>;
    /** Computed display message (generated client-side, never stored in Firestore) */
    displayMessage?: string;
    /** Icon URL or identifier for display */
    actionIcon?: string;
    /** If true, this activity cannot be updated or deleted via REST API */
    immutable?: boolean;
    /** If true, this activity was stripped by the activity resolver (for UI loading states) */
    isActivityResolverUsed?: boolean;
}
/**
 * Configuration for subscribing to activities.
 * Behavior is determined by the props passed:
 * - No config → org-wide
 * - documentIds → specific documents
 * - currentDocumentOnly → current document only
 */
export interface ActivitySubscribeConfig {
    /** Subscribe to activities for a specific organization (defaults to current org) */
    organizationId?: string;
    /** Subscribe to activities for specific document IDs */
    documentIds?: string[];
    /** Subscribe to activities for the current document only (auto-switches on setDocument) */
    currentDocumentOnly?: boolean;
    /** Only fetch activities from the last N days (default: 30) */
    maxDays?: number;
    /** Allowlist: only include activities with these feature types */
    featureTypes?: ActivityFeatureType[];
    /** Disallowlist: exclude activities with these feature types (ignored if featureTypes is set) */
    excludeFeatureTypes?: ActivityFeatureType[];
    /** Allowlist: only include activities with these action types */
    actionTypes?: string[];
    /** Disallowlist: exclude activities with these action types (ignored if actionTypes is set) */
    excludeActionTypes?: string[];
    /** Allowlist: only include activities by these user IDs */
    userIds?: string[];
    /** Disallowlist: exclude activities by these user IDs (ignored if userIds is set) */
    excludeUserIds?: string[];
}
/**
 * Represents an active activity subscription.
 * Returned by `activityService.subscribe()`.
 */
export interface ActivitySubscription {
    /** Observable stream of activities for this subscription's scope. null = not yet loaded. */
    getActivities$(): Observable<ActivityRecord[] | null>;
    /** Unsubscribe and clean up this subscription */
    unsubscribe(): void;
}
/**
 * Data required to create an activity.
 * Used for all activity types: comment, reaction, recorder, custom, etc.
 */
export interface CreateActivityData<TEntity = unknown, TTarget = unknown> {
    featureType: ActivityFeatureType;
    actionType: string;
    eventType?: string;
    targetEntityId: string;
    targetSubEntityId?: string | null;
    changes?: ActivityChanges;
    entityData?: TEntity;
    entityTargetData?: TTarget;
    /** Icon URL or identifier — typically used for custom activities */
    actionIcon?: string;
    /** Display message template — only for custom activities */
    displayMessageTemplate?: string;
    /** Template variable values — only for custom activities */
    displayMessageTemplateData?: Record<string, unknown>;
}