const fs = require('fs');
const path = require('path');
const { rootDir } = require('../db-env');

const DEFAULT_CONFIG_PATH = path.join(rootDir, 'infra', 'deploy', 'harmonize.config.json');
const FALLBACK_CONFIG_PATH = path.join(rootDir, 'infra', 'deploy', 'devtoprod.config.json');

function loadHarmonizeConfig(configPath) {
  const resolved = configPath
    ? path.resolve(configPath)
    : (fs.existsSync(DEFAULT_CONFIG_PATH) ? DEFAULT_CONFIG_PATH : FALLBACK_CONFIG_PATH);

  if (!fs.existsSync(resolved)) {
    return {
      configPath: resolved,
      dryRun: false,
      prefer: null,
      schemaChanged: false,
      steps: {
        backupDev: true,
        backupProd: true,
        schema: false,
        db: true,
        images: true,
        verify: false,
      },
      smb: {
        host: '192.168.10.122',
        share: 'Gallery',
        user: '',
        password: '',
      },
      paths: {
        prodImages: '\\\\192.168.10.122\\Gallery\\data\\images',
      },
      verify: {},
    };
  }

  const raw = JSON.parse(fs.readFileSync(resolved, 'utf8'));
  const harmonize = raw.harmonize || raw;
  return {
    configPath: resolved,
    dryRun: Boolean(harmonize.dryRun),
    prefer: harmonize.prefer || null,
    schemaChanged: Boolean(harmonize.schemaChanged ?? raw.schemaChanged),
    steps: {
      backupDev: harmonize.steps?.backupDev ?? true,
      backupProd: harmonize.steps?.backupProd ?? true,
      schema: harmonize.steps?.schema ?? Boolean(harmonize.schemaChanged ?? raw.schemaChanged),
      db: harmonize.steps?.db ?? true,
      images: harmonize.steps?.images ?? true,
      verify: harmonize.steps?.verify ?? false,
    },
    smb: {
      host: harmonize.smb?.host ?? raw.smb?.host ?? '192.168.10.122',
      share: harmonize.smb?.share ?? raw.smb?.share ?? 'Gallery',
      user: harmonize.smb?.user ?? raw.smb?.user ?? '',
      password: harmonize.smb?.password ?? raw.smb?.password ?? '',
    },
    paths: {
      prodImages: harmonize.paths?.prodImages
        ?? `\\\\${harmonize.smb?.host ?? raw.smb?.host ?? '192.168.10.122'}\\${harmonize.smb?.share ?? raw.smb?.share ?? 'Gallery'}\\data\\images`,
    },
    verify: harmonize.verify ?? raw.verify ?? {},
  };
}

function prodImagesPath(config) {
  return config.paths?.prodImages
    || `\\\\${config.smb.host}\\${config.smb.share}\\data\\images`;
}

module.exports = {
  DEFAULT_CONFIG_PATH,
  loadHarmonizeConfig,
  prodImagesPath,
};