import { defaults as tsjPreset } from 'ts-jest/presets'
import { JestConfig } from '../declarations/JestConfig'
import { fromFileNamesToFirstExistingPath } from './deps.file'

function resolveTsConfig() {
  return fromFileNamesToFirstExistingPath(
    './tsconfig.test.json',
    './tsconfig.json'
  )
}

/**
 * @see https://github.com/jpavon/react-scripts-ts/blob/master/scripts/test.js#L43
 * @todo could `dopemerge`
 * @todo should take in cli args as options too...
 */
const setupJestConfig = (dirName = '<rootDir>') => {
  const jestConfig: JestConfig = {
    verbose: true,

    setupFilesAfterEnv: ['@skava/tests/setup.js'],
    collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}'],
    testMatch: [
      // dirName + '/**/test/*.(j|t)s?(x)',
      dirName + '/__tests__/**/*.(j|t)s?(x)',
      dirName + '/src/**/__tests__/**/*.(j|t)s?(x)',
      dirName + '/src/**/?(*.)(spec|test).(j|t)s?(x)',
    ],
    testPathIgnorePatterns: [
      // dirName + '/*/__todo/*.(j|t)s?(x)',
      dirName + '/__tests__/deps/*.(j|t)s?(x)',
      dirName + '/__tests__/fixtures/*.(j|t)s?(x)',
    ],
    testEnvironment: 'node',
    transform: {
      // "^.+\\.tsx?$": require('path').resolve(__dirname, "./jest/typescriptTransform.js"),
      // "^(?!.*\\.(js|jsx|mjs|css|json)$)": require('path').resolve(__dirname, "./jest/fileTransform.js)"),
      '^.+\\.tsx?$': '@skava/tests/dist/jest/typescriptTransform.js',
      // '^(?!.*\\.(js|jsx|mjs|css|json)$)': '@skava/tests/dist/jest/fileTransform.js',
      ...tsjPreset.transform,
    },
    moduleNameMapper: {
      '^react-native$': 'react-native-web',
      // @todo
      // xmobx: resolveToRoot('node_modules/xmobx'),
    },
    moduleFileExtensions: [
      'web.ts',
      'ts',
      'web.tsx',
      'tsx',
      'web.js',
      'js',
      'web.jsx',
      'jsx',
      'mjs',
      'json',
      'node',
    ],
    globals: {
      'ts-jest': {
        // @todo may want this to resolve to root/
        tsConfigFile: resolveTsConfig(),
        // tsConfig: require(resolveTsConfig()),
        /**
         * @todo fixme
         */
        // diagnostics: false,
        diagnostics: {
          warnOnly: true,
        },
      },
    },
  }

  return jestConfig
}

const jestConfig = setupJestConfig()

process.env.FORCE_TRANSPILE_NODE_MODULES =
  process.env.FORCE_TRANSPILE_NODE_MODULES === undefined
    ? undefined
    : process.env.FORCE_TRANSPILE_NODE_MODULES

if (!process.env.FORCE_TRANSPILE_NODE_MODULES) {
  jestConfig.transformIgnorePatterns = [
    '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|ts|tsx)$',
  ]
}

export { setupJestConfig }
export { jestConfig }