const path = require('path');
const { openRuntimeDb, isPostgresEnabled } = require('../db/runtime');
const pg = require('../db/pgAsync');

const intelligencePath = process.env.INTELLIGENCE_DB || path.resolve(process.cwd(), 'intelligence.sqlite');
const db = openRuntimeDb(intelligencePath, { schema: 'intelligence', readonly: true });

async function autonomyRoutes(fastify) {
  fastify.get('/health', async () => ({ ok: true, service: 'duriin-api' }));

  fastify.get('/autonomy/status', async () => {
    if (isPostgresEnabled()) {
      const exists = await pg.get('intelligence', "SELECT 1 FROM information_schema.tables WHERE table_schema = $1 AND table_name = $2", ['intelligence', 'autonomy_jobs']);
      if (!exists) return { enabled: false, reason: 'autonomy schema is not initialized' };
      const [jobs, predictions, decisions, outcomes, legacy, instruments] = await Promise.all([
        pg.all('intelligence', 'SELECT lane, status, COUNT(*) AS count FROM autonomy_jobs GROUP BY lane, status ORDER BY lane, status'),
        pg.all('intelligence', 'SELECT status, COUNT(*) AS count FROM autonomy_predictions GROUP BY status ORDER BY status'),
        pg.all('intelligence', 'SELECT action, COUNT(*) AS count FROM autonomy_decisions GROUP BY action ORDER BY action'),
        pg.get('intelligence', 'SELECT COUNT(*) AS total, SUM(direction_correct) AS correct, AVG(excess_return) AS average_excess_return FROM autonomy_outcomes'),
        pg.get('intelligence', 'SELECT COUNT(*) AS count FROM autonomy_legacy_records'),
        pg.get('intelligence', 'SELECT COUNT(*) AS count FROM autonomy_instruments WHERE active=1 AND tradable=1'),
      ]);
      return { enabled: true, jobs, predictions, decisions, outcomes, legacyRecords: legacy.count, allowlistedInstruments: instruments.count };
    }
    const exists = isPostgresEnabled()
      ? db.prepare("SELECT 1 FROM information_schema.tables WHERE table_schema = ? AND table_name = ?").get('intelligence', 'autonomy_jobs')
      : db.prepare("SELECT 1 FROM sqlite_master WHERE type='table' AND name='autonomy_jobs'").get();
    if (!exists) return { enabled: false, reason: 'autonomy schema is not initialized' };
    const jobs = db.prepare(`
      SELECT lane, status, COUNT(*) AS count
      FROM autonomy_jobs
      GROUP BY lane, status
      ORDER BY lane, status
    `).all();
    const predictions = db.prepare(`
      SELECT status, COUNT(*) AS count
      FROM autonomy_predictions
      GROUP BY status
      ORDER BY status
    `).all();
    const decisions = db.prepare(`
      SELECT action, COUNT(*) AS count
      FROM autonomy_decisions
      GROUP BY action
      ORDER BY action
    `).all();
    const outcomes = db.prepare(`
      SELECT COUNT(*) AS total,
             SUM(direction_correct) AS correct,
             AVG(excess_return) AS average_excess_return
      FROM autonomy_outcomes
    `).get();
    const legacy = db.prepare('SELECT COUNT(*) AS count FROM autonomy_legacy_records').get();
    const instruments = db.prepare('SELECT COUNT(*) AS count FROM autonomy_instruments WHERE active=1 AND tradable=1').get();
    return { enabled: true, jobs, predictions, decisions, outcomes, legacyRecords: legacy.count, allowlistedInstruments: instruments.count };
  });
}

module.exports = autonomyRoutes;