/*
 * Description: Static regression tests for keeping mxPIC EDA runtime data outside the repository.
 * Inside functions: N/A - assertion-based test/module script.
 * Developer : Qin Yue @ 2026
 * Organization : OptiHK Limited
 */
const assert = require('assert');
const fs = require('fs');
const path = require('path');

const root = path.resolve(__dirname, '..');
const backend = path.join(root, 'backend');
const storagePathsPath = path.join(backend, 'storage_paths.py');
const storagePathsPy = fs.existsSync(storagePathsPath)
  ? fs.readFileSync(storagePathsPath, 'utf8')
  : '';
const databasePy = fs.readFileSync(path.join(backend, 'database.py'), 'utf8');
const serverPy = fs.readFileSync(path.join(backend, 'server.py'), 'utf8');
const gitignore = fs.readFileSync(path.join(root, '.gitignore'), 'utf8');

assert(
  fs.existsSync(storagePathsPath),
  'backend/storage_paths.py should be the single source of truth for runtime storage paths'
);
assert(
  storagePathsPy.includes('MXPIC_DATABASE_ROOT'),
  'storage path layer should support MXPIC_DATABASE_ROOT override'
);
assert(
  storagePathsPy.includes('mxpic_EDA_database'),
  'default runtime database folder should be sibling mxpic_EDA_database'
);
assert(
  storagePathsPy.includes('DB_FILE') && storagePathsPy.includes('EXPORT_ROOT'),
  'storage path layer should export DB_FILE and EXPORT_ROOT'
);
assert(
  storagePathsPy.includes('raise RuntimeError'),
  'storage path layer should fail fast when the external database root is invalid'
);
assert(
  !serverPy.includes("DATABASE_ROOT = os.path.abspath(os.path.join(BASE_DIR, '..', 'database'))"),
  'server.py should not hardcode in-repo database/ as DATABASE_ROOT'
);
assert(
  serverPy.includes('from storage_paths import DATABASE_ROOT, EXPORT_ROOT'),
  'server.py should import runtime storage roots from storage_paths'
);
assert(
  !databasePy.includes('"..", "database", "mxpic_data.db"') &&
    !databasePy.includes("'..', 'database', 'mxpic_data.db'"),
  'database.py should not hardcode database/mxpic_data.db inside the repository'
);
assert(
  databasePy.includes('from storage_paths import DB_FILE'),
  'database.py should import DB_FILE from storage_paths'
);
assert(
  gitignore.includes('/database/') &&
    gitignore.includes('/backend/*.db') &&
    gitignore.includes('*.db-wal') &&
    gitignore.includes('/mxpic_EDA_database/'),
  '.gitignore should ignore old and accidental in-repo runtime database artifacts'
);