/**
 * AgentDB Runtime Patch
 *
 * Automatically fixes AgentDB v1.3.9 import resolution issues at runtime.
 * This patch works in all contexts: npm install, npm install -g, and npx.
 *
 * Issue: agentdb v1.3.9 missing .js extensions in ESM exports
 * Solution: Patch the controller index.js file at runtime before first import
 */
import { readFileSync, writeFileSync, existsSync } from 'fs';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';
let patched = false;
let patchAttempted = false;
/**
 * Apply AgentDB import fix at runtime
 * Safe to call multiple times - only patches once
 */
export function applyAgentDBPatch() {
    // Only attempt once per process
    if (patchAttempted) {
        return patched;
    }
    patchAttempted = true;
    try {
        // Find agentdb installation
        const agentdbPath = findAgentDBPath();
        if (!agentdbPath) {
            console.warn('[AgentDB Patch] Could not locate agentdb installation');
            return false;
        }
        const controllerIndexPath = join(agentdbPath, 'dist', 'controllers', 'index.js');
        if (!existsSync(controllerIndexPath)) {
            console.warn(`[AgentDB Patch] Controller index not found: ${controllerIndexPath}`);
            return false;
        }
        // Read current content
        let content = readFileSync(controllerIndexPath, 'utf8');
        // Check if already patched
        if (content.includes("from './ReflexionMemory.js'")) {
            patched = true;
            return true;
        }
        // Apply patches
        const patches = [
            { from: "from './ReflexionMemory'", to: "from './ReflexionMemory.js'" },
            { from: "from './SkillLibrary'", to: "from './SkillLibrary.js'" },
            { from: "from './EmbeddingService'", to: "from './EmbeddingService.js'" },
            { from: "from './CausalMemoryGraph'", to: "from './CausalMemoryGraph.js'" },
            { from: "from './CausalRecall'", to: "from './CausalRecall.js'" },
            { from: "from './NightlyLearner'", to: "from './NightlyLearner.js'" }
        ];
        let modified = false;
        for (const patch of patches) {
            if (content.includes(patch.from) && !content.includes(patch.to)) {
                content = content.replace(new RegExp(patch.from, 'g'), patch.to);
                modified = true;
            }
        }
        if (modified) {
            try {
                writeFileSync(controllerIndexPath, content, 'utf8');
                patched = true;
                console.log('[AgentDB Patch] ✅ Successfully patched AgentDB imports');
                return true;
            }
            catch (writeError) {
                // If we can't write (npx temp dir permissions), that's OK - imports will fail gracefully
                console.warn('[AgentDB Patch] ⚠️  Could not write patch (read-only):', writeError.message);
                return false;
            }
        }
        return false;
    }
    catch (error) {
        console.warn('[AgentDB Patch] Error applying patch:', error.message);
        return false;
    }
}
/**
 * Find AgentDB installation directory
 * Checks multiple possible locations
 */
function findAgentDBPath() {
    const possiblePaths = [
        // Local node_modules (most common)
        join(process.cwd(), 'node_modules', 'agentdb'),
        // Parent directory node_modules (monorepo)
        join(process.cwd(), '..', 'node_modules', 'agentdb'),
        // Global npm installation
        join(process.execPath, '..', '..', 'lib', 'node_modules', 'agentdb'),
        // Relative to this file (for bundled installations)
        ...(typeof __dirname !== 'undefined'
            ? [
                join(__dirname, '..', '..', 'node_modules', 'agentdb'),
                join(__dirname, '..', '..', '..', 'agentdb')
            ]
            : []),
        // Using import.meta.url (ESM)
        ...(typeof import.meta !== 'undefined' && import.meta.url
            ? (() => {
                try {
                    const currentDir = dirname(fileURLToPath(import.meta.url));
                    return [
                        join(currentDir, '..', '..', 'node_modules', 'agentdb'),
                        join(currentDir, '..', '..', '..', 'agentdb')
                    ];
                }
                catch {
                    return [];
                }
            })()
            : [])
    ];
    // Try each path
    for (const path of possiblePaths) {
        if (existsSync(join(path, 'package.json'))) {
            try {
                const pkg = JSON.parse(readFileSync(join(path, 'package.json'), 'utf8'));
                if (pkg.name === 'agentdb') {
                    return path;
                }
            }
            catch {
                continue;
            }
        }
    }
    // Try require.resolve as fallback
    try {
        const resolved = require.resolve('agentdb/package.json');
        return dirname(resolved);
    }
    catch {
        // Not found via require.resolve
    }
    return null;
}
/**
 * Check if AgentDB patch is needed
 */
export function isAgentDBPatchNeeded() {
    const agentdbPath = findAgentDBPath();
    if (!agentdbPath)
        return false;
    const controllerIndexPath = join(agentdbPath, 'dist', 'controllers', 'index.js');
    if (!existsSync(controllerIndexPath))
        return false;
    const content = readFileSync(controllerIndexPath, 'utf8');
    return !content.includes("from './ReflexionMemory.js'");
}
/**
 * Get patch status information
 */
export function getAgentDBPatchStatus() {
    return {
        needed: isAgentDBPatchNeeded(),
        applied: patched,
        attempted: patchAttempted,
        location: findAgentDBPath()
    };
}
// Auto-apply patch on module load (SYNCHRONOUS - must happen before any AgentDB imports)
// This ensures the patch is applied before any imports
if (typeof process !== 'undefined' && !process.env.SKIP_AGENTDB_PATCH) {
    // MUST be synchronous - async won't work because imports happen immediately
    try {
        applyAgentDBPatch();
    }
    catch (error) {
        // Silently fail - patch will be attempted again on explicit call
    }
}
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