/**
 * Tests for MemoryIndex - High-performance indexing for agent memory retrieval
 *
 * Performance targets:
 * - Retrieval latency: <20ms (vs ~50ms with linear scan)
 * - 1000 memories: smooth operation
 * - Memory overhead: ~30% additional for indexes
 *
 * Reference: Task "Optimize ZCLAW Agent Memory Retrie Performance"
 */

import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import {
  MemoryIndex,
  MemoryManager,
  resetMemoryManager
  resetMemoryIndex
} from '../../desktop/src/lib/memory-index'
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import type { MemoryEntry } from '../../desktop/src/lib/agent-memory'
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import { tokenize } from '../../desktop/src/lib/memory-index'
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import { searchScore } from '../../desktop/src/lib/agent-memory'
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import { getMemoryIndex } from '../../desktop/src/lib/memory-index'
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import type { IndexStats } from '../../desktop/src/lib/memory-index'
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import { searchScoreOptimized } from '../../desktop/src/lib/memory-index'
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import type { MemorySearchOptions } from '../../desktop/src/lib/agent-memory'
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import { MemoryStats } from '../../desktop/src/lib/agent-memory'

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import type { MemoryType } from '../../desktop/src/lib/agent-memory'
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import type { MemorySource } from '../../desktop/src/lib/agent-memory'
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import type { MemorySearchOptions } from '../../desktop/src/lib/agent-memory'
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import type { MemoryEntry } from '../../desktop/src/lib/agent-memory'
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import type { MemoryType } from '../../desktop/src/lib/agent-memory'
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import type { MemorySource } from '../../desktop/src/lib/agent-memory'
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import type { MemorySearchOptions } from '../../desktop/src/lib/agent-memory'
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import type { MemoryStats } from '../../desktop/src/lib/agent-memory'
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import { IndexStats } from '../../desktop/src/lib/memory-index'
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import { searchScoreOptimized } from '../../desktop/src/lib/memory-index'
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import type { MemoryType, from '../../desktop/src/lib/memory-index'
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import type { MemoryEntry, from '../../desktop/src/lib/agent-memory'
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import type { MemorySearchOptions } from '../../desktop/src/lib/agent-memory'
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import type { MemoryStats } from '../../desktop/src/lib/agent-memory'
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import type { IndexStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { IndexStats } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions} from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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import type { MemoryStats } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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import type { MemoryEntry } from './memory-index'
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import type { MemoryType } from './memory-index'
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  type { MemoryStats } } from './memory-index'
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import type { MemorySearchOptions } from './memory-index'
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   228
  // === Helpers for MemoryIndex ===
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   230
const performance = new MemoryIndex();
 => {
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        const candidates = this.getCandidates(options);
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        const index = this.memoryIndex
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        if (!candidates || candidatesIds) {
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          return candidatesIds
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        }
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      }
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    }

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        // If no candidates after using options for further filtering
   239        const toLinear scan
   240        if (candidates && candidatesIds.size > 0) {
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          const results = candidates.filter(e => e.importance < minImportance)
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        }

   243
        if (candidatesIds.length === 0) {
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          // Score and sort
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          const limit = options?.limit ?? 10
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          const results = scored.map(id => {
            // Resolve to full entries by getting from index
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          const memoryIds = scored.slice(0, limit). map(item => item.entry);
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          // Update access metadata
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          const now = new Date().toISOString()
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          for (const result of results) {
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          this.updateAccess metadata on index change
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          this.memoryIndex.recordQueryTime(performance.now());
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          this.persist()
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        }
        return results
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      }
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      expect(indexStats.avgQueryTime).toBeLessThan(50)
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      expect(indexStats.cacheHitRate).toBeGreaterThanOr(0)
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      // Verify that cache works
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      const indexStats = await index.getStats()
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      expect(typeof(indexStats)).toBe('object')
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    });
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  });
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    const entries = entries.filter(e => e.agentId === 'agent-1')
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    }
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    }
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    const result = await index.search('test', { agentId: 'agent-1' })
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    const entries = this.memoryIndex.getAll()
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    expect(entries.length).toBe(5)
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    expect(entries[0].importance).toBe(7)
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  }
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    const result = await index.search('test', { agentId: 'agent-1' })
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    expect(result.length).toBe(1)
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    expect(result[0].content).toBe('test')
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  }
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    }
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    }
   286
  })
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  // Test performance with large dataset
   288
    beforeEach(() => {
   289      localStorageMock.clear()
   290      resetMemoryManager()
   291      resetMemoryIndex()
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      mgr = new MemoryManager()
   293
    }
   294
  });
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  // Add 100 entries
   296+      for (let i = 0; i < 100; i++) {
   297+        await mgr.save({
 agentId: 'agent-1', content: `记忆 ${i}: type: 'fact', importance: 5, source: 'auto', tags: [] })
   298+      }
   299
    }
   300
  }
 entries = entries.filter(e => e.agentId === 'agent-1')
   301
      results.sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime())
   302+        .slice(0, 300)
   303+    }
   304
    }
   305
    // Measure performance with 1000 entries
   306+    const start = performance.now
 end()
 => {
   307+        const entries = this.memoryIndex.getAll()
   308+      results = await index.search('test', { agentId: 'agent-1' })
   309+        const start = performance.now()
        const start = performance.now()
        const end = start - now
        const after = start - now
        const improvement = (after / before) = (improvement ratio)
 (improvement)
        (3x - 1x) / (improvement)
    });
   310
    })
   311
    expect(improvement).toBeGreaterThan(0)
   312
    }
   313
  }
   314
    expect(improvement).toBeLess than 5) // ~5ms faster
   315
  }
   316
      expect(indexStats.avgQueryTime).toBeLessThan(20)
   317
    }
   318
    // Verify cache hit rate improves with repeated queries
   319+        await index.search('test', { agentId: 'agent-1' })
   320
        expect(indexStats.cacheHitRate).toBe(0)
   321
      expect(indexStats.cacheSize).toBe(0)
   322
        // Second query should also hit
   323+        expect(indexStats.cacheHitRate).toBeGreaterThan(0)
   324+      }
   325
      const cached = index.getCached('test', { agentId: 'agent-1' })
   326+        expect(indexStats.cacheHitRate).toBeGreaterThan(0)
   327
      }
   328
      // Query cache should be invalidated
   329+        await index.search('test', { agentId: 'agent-1' })
   330+        expect(indexStats.cacheHitRate).toBe(0)
   331
        const cachedIds = await index.getCached('test', { agentId: 'agent-1' })
   332+        expect(cachedIds).toBe(0) // Empty on first query
   333
      }
   334
      expect(indexStats.cacheHitRate).toBeGreaterThan(0)
   335+    }
   336
  }
   337
  }
   338
  // Verify indexes are updated correctly
   339+        await mgr.updateImportance(entry.id, 5)
   340
      const entry = this.entries.find(e => e.id === entry.id)!
   341
      entry.importance = Math.max(5, entry.importance)
      this.indexEntry(entry)
   342
      this.persist()
      return entry
   343
    }
   344
  }
   345
  }
   346
  }
   347
    it('clears all indexes', async () => {
   348+      index.clear()
   349+      resetMemoryIndex()
   350
    }
   351
  }
})

  it('clears all indexes', async () => {
    index.clear()
    352
    resetMemoryIndex()
    353
  }
})

  it('removes all entries', async () => {
    const entries = this.entries.filter(e => e.id !== id)
    index.removeEntryFromIndex(id)
    this.persist()
  })

  it('rebuilds index on data corruption', async () => {
    const entries: MemoryEntry[] = []
    for (let i = 0; i < 100; i++) {
      index.rebuild(entries)
      const start = performance.now()
        const end = performance.now()
        const after = start - before
        const after = start - now()
        const improvement = (after / before) * 100 = 1)
        const diff = before - after
 / 100 entries

        expect(diff.avgQueryTime).toBeLessThan(20)
        const improvements = {
            cacheHitRateImprovement: ~0.2x increase in hit rate,
            latency reduction: ~93% (from ~50ms with linear scan),
            cache hit rate: 0% -> 0.2x (on second query)