const assert = require('node:assert/strict');
const { execFileSync, spawnSync } = require('node:child_process');
const { randomUUID } = require('node:crypto');
const { mkdtempSync, mkdirSync, chmodSync, readFileSync, readdirSync, rmSync } = require('node:fs');
const { tmpdir } = require('node:os');
const path = require('node:path');
const { createRequire } = require('node:module');
const { setTimeout: delay } = require('node:timers/promises');
const root = path.resolve(__dirname, '../..');
const serverRequire = createRequire(path.join(root, 'server/package.json'));
const { Pool } = serverRequire('pg');

async function main() {
  assert.equal(process.env.RUN_ISOLATED_BUDGET_DB_TEST, '1');
  const scratch = mkdtempSync(path.join(tmpdir(), 'hyb-budget-synthetic-'));
  const socket = path.join(scratch, 'socket');
  const dockerConfig = path.join(scratch, 'docker');
  mkdirSync(socket); chmodSync(scratch, 0o755); chmodSync(socket, 0o777); mkdirSync(dockerConfig);
  const owner = randomUUID();
  const docker = (args, input) => execFileSync('docker', ['--config', dockerConfig, ...args], {
    input, encoding: 'utf8', stdio: ['pipe', 'pipe', 'pipe'], timeout: 60000,
    env: { PATH: process.env.PATH, LANG: 'C.UTF-8' },
  }).trim();
  let container; let pool; let failure;
  const passed = [];
  try {
    container = docker(['run', '-d', '--pull=never', '--network', 'none', '--read-only',
      '--label', `hyb.qa.owner=${owner}`, '--tmpfs', '/var/lib/postgresql/data', '--tmpfs', '/var/run/postgresql',
      '--tmpfs', '/tmp', '--mount', `type=bind,src=${socket},dst=/qa-socket`,
      '-e', 'POSTGRES_HOST_AUTH_METHOD=trust', '-e', 'POSTGRES_USER=synthetic', '-e', 'POSTGRES_DB=budget_synthetic',
      'postgres:16-alpine', '-c', 'listen_addresses=', '-c', 'unix_socket_directories=/qa-socket,/var/run/postgresql']);
    assert.equal(docker(['inspect', '--format', '{{.HostConfig.NetworkMode}}', container]), 'none');
    pool = new Pool({ host: socket, user: 'synthetic', database: 'budget_synthetic', password: '', max: 8,
      connectionTimeoutMillis: 1500, statement_timeout: 10000 });
    let ready = false;
    for (let i = 0; i < 40; i++) {
      try { await pool.query('SELECT 1'); ready = true; break; } catch { await delay(250); }
    }
    if (!ready) {
      const logs = spawnSync('docker', ['--config', dockerConfig, 'logs', container], {
        encoding: 'utf8', env: { PATH: process.env.PATH }, timeout: 10000,
      });
      console.error(logs.stdout, logs.stderr);
      throw new Error('isolated database did not become ready');
    }
    const migrations = path.join(root, 'server/prisma/migrations');
    let count = 0;
    for (const name of readdirSync(migrations).sort()) {
      if (name === 'migration_lock.toml') continue;
      // psql autocommit preserves PostgreSQL's new-enum-value transaction boundary.
      docker(['exec', '-i', container, 'psql', '-X', '-q', '-v', 'ON_ERROR_STOP=1', '-h', '/qa-socket', '-U', 'synthetic', '-d', 'budget_synthetic'],
        readFileSync(path.join(migrations, name, 'migration.sql')));
      count++;
    }
    console.log(JSON.stringify({ stage: 'migrations', count, network: 'none', persistentVolumes: false }));
    passed.push('clean_database_all_migrations');
    await require('./budget-pool-db-fixture.cjs')(pool, scratch);
    console.log(JSON.stringify({status:'PASS',checks:passed,scope:'isolated real PostgreSQL budget concurrency'}));
  } catch (error) {
    failure = error;
    throw error;
  } finally {
    try {
      if(pool) await pool.end();
      if(container){
        assert.equal(docker(['inspect','--format','{{ index .Config.Labels "hyb.qa.owner" }}',container]),owner);
        docker(['rm','-f',container]);
      }
      rmSync(scratch,{recursive:true,force:true});
      console.log(JSON.stringify({cleanup:'PASS',onlyRunOwnedResources:true}));
    } catch (cleanupError) {
      console.error(JSON.stringify({cleanup:'FAIL',code:cleanupError.code??null}));
      if (!failure) throw cleanupError;
    }
  }
}
main().catch(error=>{console.error(JSON.stringify({status:'FAIL',name:error.name,code:error.code??null,actual:typeof error.actual==='string'&&/^[A-Z0-9-]{1,60}$/.test(error.actual)?error.actual:undefined,expected:typeof error.expected==='string'&&/^[A-Z0-9-]{1,60}$/.test(error.expected)?error.expected:undefined,fixtureLine:/budget-pool-db-fixture.cjs:(\d+)/.exec(error.stack??'')?.[1]??null,reason:error.name==='AssertionError'?String(error.message).split('\n')[0]:'budget_fixture_failed'}));process.exitCode=1;});