@iflow-mcp/ansvar-systems-german-law-mcp/dist/scripts/write-db-metadata.js

German legal research MCP server with statutes, case law, and preparatory works from gesetze-im-internet.de

#!/usr/bin/env tsx
/**
 * Write db_metadata table to an existing German Law database.
 *
 * German Law MCP uses Python for database ingestion. Rather than modifying
 * the Python scripts, this standalone TypeScript script writes the standard
 * db_metadata table after ingestion completes.
 *
 * Pipeline:
 *   npm run ingest          # Python: build base DB
 *   npm run write:metadata  # TypeScript: add metadata table
 *
 * Usage: npm run write:metadata
 */
import Database from '@ansvar/mcp-sqlite';
import * as fs from 'fs';
import * as path from 'path';
const DB_PATH = path.resolve(process.cwd(), 'data', 'database.db');
function writeMetadata() {
    console.log('Writing db_metadata to German Law database...\n');
    if (!fs.existsSync(DB_PATH)) {
        console.error(`ERROR: No database found at ${DB_PATH}\n` +
            `Run 'npm run ingest' first to create the database.`);
        process.exit(1);
    }
    const db = new Database(DB_PATH);
    db.pragma('journal_mode = WAL');
    // Create metadata table
    db.prepare(`
    CREATE TABLE IF NOT EXISTS db_metadata (
      key TEXT PRIMARY KEY,
      value TEXT NOT NULL
    )
  `).run();
    // Determine tier by checking for paid tables
    const paidTables = ['case_law_documents_full', 'preparatory_works_full', 'agency_guidance'];
    const hasPaidTable = paidTables.some((table) => {
        const row = db.prepare("SELECT 1 AS ok FROM sqlite_master WHERE type='table' AND name = ?").get(table);
        return Boolean(row?.ok);
    });
    const tier = hasPaidTable ? 'professional' : 'free';
    // Write metadata
    const upsertMeta = db.prepare(`
    INSERT INTO db_metadata (key, value) VALUES (?, ?)
    ON CONFLICT(key) DO UPDATE SET value = excluded.value
  `);
    const writeMeta = db.transaction(() => {
        upsertMeta.run('tier', tier);
        upsertMeta.run('schema_version', '1');
        upsertMeta.run('built_at', new Date().toISOString());
        upsertMeta.run('builder', 'write-db-metadata.ts');
    });
    writeMeta();
    db.close();
    console.log(`  Database: ${DB_PATH}`);
    console.log(`  Tier: ${tier}`);
    console.log(`  Metadata written successfully.`);
}
writeMetadata();