/**
 * Event Search Interfaces
 *
 * Defines interfaces for advanced event search and filtering capabilities
 */
import { CalendarEvent, EventFilter } from './event.interfaces';
/**
 * Search query structure
 */
export interface SearchQuery {
    /** Text search terms */
    text?: string;
    /** Field-specific searches */
    fields?: {
        title?: string;
        description?: string;
        location?: string;
        attendees?: string;
        category?: string;
    };
    /** Date range filters */
    dateRange?: {
        start?: Date;
        end?: Date;
        type?: 'exact' | 'between' | 'before' | 'after' | 'relative';
        relative?: {
            value: number;
            unit: 'days' | 'weeks' | 'months' | 'years';
            direction: 'past' | 'future';
        };
    };
    /** Advanced filters */
    filters?: EventFilter;
    /** Boolean operators */
    operators?: {
        textOperator?: 'and' | 'or';
        filterOperator?: 'and' | 'or';
    };
    /** Sorting options */
    sort?: {
        field: 'title' | 'dateTime.start' | 'dateTime.end' | 'priority' | 'status' | 'createdAt' | 'updatedAt';
        direction: 'asc' | 'desc';
    };
    /** Pagination limit */
    limit?: number;
    /** Pagination offset */
    offset?: number;
    /** Facets configuration */
    facets?: {
        categories?: {
            enabled: boolean;
        };
        status?: {
            enabled: boolean;
        };
        priority?: {
            enabled: boolean;
        };
        attendees?: {
            enabled: boolean;
        };
    };
}
/**
 * Search result item
 */
export interface SearchResultItem {
    /** Event data */
    event: CalendarEvent;
    /** Relevance score (0-1) */
    score: number;
    /** Matched fields */
    matchedFields: string[];
    /** Highlighted text snippets */
    highlights: {
        field: string;
        snippet: string;
        start: number;
        end: number;
    }[];
    /** Search context */
    context?: string;
}
/**
 * Search results
 */
export interface SearchResults {
    /** Search result items */
    items: SearchResultItem[];
    /** Total number of matches */
    total: number;
    /** Total count (alias for total) */
    totalCount: number;
    /** Whether there are more results */
    hasMore: boolean;
    /** Search execution time in milliseconds */
    executionTime: number;
    /** Search query used */
    query: SearchQuery;
    /** Suggestions for refinement */
    suggestions?: string[];
    /** Faceted search results */
    facets?: SearchFacets;
}
/**
 * Search facets for filtering
 */
export interface SearchFacets {
    /** Categories with counts */
    categories: Array<{
        name: string;
        count: number;
    }>;
    /** Statuses with counts */
    status: Array<{
        name: string;
        count: number;
    }>;
    /** Priorities with counts */
    priority: Array<{
        name: string;
        count: number;
    }>;
    /** Attendees with counts */
    attendees: Array<{
        name: string;
        count: number;
    }>;
    /** Tags with counts */
    tags: Array<{
        name: string;
        count: number;
    }>;
    /** Date ranges with counts */
    dateRanges: Array<{
        label: string;
        start: Date;
        end: Date;
        count: number;
    }>;
}
/**
 * Search index configuration
 */
export interface SearchIndexConfig {
    /** Fields to index */
    indexedFields: string[];
    /** Enable full-text search */
    enableFullTextSearch: boolean;
    /** Enable fuzzy matching */
    enableFuzzySearch: boolean;
    /** Fuzzy search threshold (0-1) */
    fuzzyThreshold: number;
    /** Enable stemming */
    enableStemming: boolean;
    /** Stop words to ignore */
    stopWords: string[];
    /** Custom field weights for scoring */
    fieldWeights: Record<string, number>;
}
/**
 * Saved search
 */
export interface SavedSearch {
    /** Unique identifier */
    id: string;
    /** Search name */
    name: string;
    /** Search query */
    query: SearchQuery;
    /** Owner */
    owner: string;
    /** User ID (alias for owner) */
    userId: string;
    /** Whether search is shared */
    isShared: boolean;
    /** Creation date */
    createdAt: Date;
    /** Last used date */
    lastUsed?: Date;
    /** Usage count */
    usageCount: number;
    /** Auto-refresh interval */
    autoRefresh?: number;
}
/**
 * Search analytics
 */
export interface SearchAnalytics {
    /** Most searched terms */
    popularTerms: Array<{
        term: string;
        count: number;
    }>;
    /** Search frequency by time */
    searchFrequency: Array<{
        date: Date;
        count: number;
    }>;
    /** No-result searches */
    noResultQueries: Array<{
        query: string;
        count: number;
    }>;
    /** Average search time */
    averageSearchTime: number;
    /** Most used filters */
    popularFilters: Array<{
        filter: string;
        count: number;
    }>;
}
/**
 * Event search service interface
 */
export interface IEventSearchService {
    /**
     * Initialize search service
     */
    initialize(config: SearchIndexConfig): Promise<void>;
    /**
     * Build search index
     */
    buildIndex(events: CalendarEvent[]): Promise<void>;
    /**
     * Add event to index
     */
    addToIndex(event: CalendarEvent): Promise<void>;
    /**
     * Update event in index
     */
    updateInIndex(event: CalendarEvent): Promise<void>;
    /**
     * Remove event from index
     */
    removeFromIndex(eventId: string): Promise<void>;
    /**
     * Search events
     */
    search(query: SearchQuery, page?: number, pageSize?: number): Promise<SearchResults>;
    /**
     * Quick text search
     */
    quickSearch(text: string, limit?: number): Promise<SearchResultItem[]>;
    /**
     * Get search suggestions
     */
    getSuggestions(partialText: string, limit?: number): Promise<string[]>;
    /**
     * Get search facets
     */
    getFacets(query?: SearchQuery): Promise<SearchFacets>;
    /**
     * Save search query
     */
    saveSearch(name: string, query: SearchQuery, userId: string): Promise<SavedSearch>;
    /**
     * Get saved searches
     */
    getSavedSearches(userId?: string): Promise<SavedSearch[]>;
    /**
     * Delete saved search
     */
    deleteSavedSearch(id: string): Promise<void>;
    /**
     * Execute saved search
     */
    executeSavedSearch(id: string): Promise<SearchResults>;
    /**
     * Get search analytics
     */
    getAnalytics(dateRange?: {
        start: Date;
        end: Date;
    }): Promise<SearchAnalytics>;
    /**
     * Get search analytics (alternative method name)
     */
    getSearchAnalytics(): Promise<{
        totalSearches: number;
        topQueries: Array<{
            query: string;
            count: number;
        }>;
        avgSearchTime: number;
        noResultsRate: number;
    }>;
    /**
     * Clear search index
     */
    clearIndex(): Promise<void>;
    /**
     * Rebuild search index
     */
    rebuildIndex(events?: CalendarEvent[]): Promise<void>;
    /**
     * Get index statistics
     */
    getIndexStats(): Promise<{
        totalEvents: number;
        indexSize: number;
        lastUpdated: Date;
        health: 'good' | 'degraded' | 'poor';
    }>;
    /**
     * Export search results
     */
    exportSearchResults(results: SearchResults, format: 'csv' | 'json' | 'xml'): Promise<{
        data: string;
        filename: string;
    }>;
}