M.I.M.I.R - Multi-agent Intelligent Memory & Insight Repository

import type { Preamble } from './types'; /** * Manages preamble fetching, caching, and lifecycle */ export class PreambleManager { private cache: Map<string, string> = new Map(); private availablePreambles: Preamble[] = []; private baseUrl: string; private getAuthHeaders: () => Promise<Record<string, string>>; constructor(baseUrl: string, getAuthHeaders: () => Promise<Record<string, string>>) { this.baseUrl = baseUrl; this.getAuthHeaders = getAuthHeaders; } /** * Update base URL if Mimir server location changes */ updateBaseUrl(baseUrl: string): void { this.baseUrl = baseUrl; // Clear cache when URL changes as preambles might be different this.cache.clear(); } /** * Fetch list of available preambles from Mimir */ async loadAvailablePreambles(): Promise<Preamble[]> { try { const headers = await this.getAuthHeaders(); const response = await fetch(`${this.baseUrl}/api/preambles`, { headers }); if (!response.ok) { throw new Error(`HTTP ${response.status}: ${response.statusText}`); } const data = await response.json() as { preambles?: Preamble[] }; this.availablePreambles = data.preambles || []; console.log(`✅ Loaded ${this.availablePreambles.length} preambles from Mimir`); return this.availablePreambles; } catch (error) { console.error('Failed to load available preambles:', error); return []; } } /** * Get list of currently loaded preambles */ getAvailablePreambles(): Preamble[] { return this.availablePreambles; } /** * Fetch preamble content by name (with caching) */ async fetchPreambleContent(preambleName: string): Promise<string> { // Check cache first const cached = this.cache.get(preambleName); if (cached) { console.log(`📦 Using cached preamble: ${preambleName}`); return cached; } try { console.log(`🌐 Fetching preamble from server: ${preambleName}`); const headers = await this.getAuthHeaders(); const response = await fetch(`${this.baseUrl}/api/preambles/${preambleName}`, { headers }); if (!response.ok) { throw new Error(`HTTP ${response.status}: ${response.statusText}`); } const content = await response.text(); // Cache for future use this.cache.set(preambleName, content); console.log(`✅ Fetched and cached preamble: ${preambleName} (${content.length} chars)`); return content; } catch (error) { console.error(`Failed to fetch preamble '${preambleName}':`, error); throw new Error(`Could not load preamble '${preambleName}'. Is Mimir server running at ${this.baseUrl}?`); } } /** * Clear preamble cache (useful after configuration changes) */ clearCache(): void { this.cache.clear(); console.log('🗑️ Cleared preamble cache'); } /** * Get cache statistics */ getCacheStats(): { size: number; keys: string[] } { return { size: this.cache.size, keys: Array.from(this.cache.keys()) }; } }