import { APK_TABS } from './constants';

export type ApkEnvironment = 'product' | 'dev' | 'sandbox' | 'other';

export interface ParsedApkMetadata {
  environment: ApkEnvironment;
  commit: string | null;
  isValid: boolean;
}

export function getApkTabs(): string[] {
  return APK_TABS;
}

export function detectEnvironment(prefix: string, configuredTabs: string[]): ApkEnvironment {
  // Empty prefix → other
  if (!prefix) {
    return 'other';
  }

  // No underscore means product (e.g., "ft")
  if (!prefix.includes('_')) {
    return 'product';
  }

  // Extract environment from last segment after underscore
  const lastUnderscoreIndex = prefix.lastIndexOf('_');
  const env = prefix.substring(lastUnderscoreIndex + 1);

  // Check if environment is configured
  if (configuredTabs.includes(env)) {
    return env as ApkEnvironment;
  }

  return 'other';
}

export function parseApkFilename(filename: string, version: string): ParsedApkMetadata {
  // Use version as delimiter (with leading underscore)
  const delimiter = `_${version}`;
  const delimiterIndex = filename.indexOf(delimiter);

  let prefix: string;
  if (delimiterIndex > 0) {
    prefix = filename.substring(0, delimiterIndex);
  } else {
    // Fallback: can't find version delimiter
    prefix = '';
  }

  const environment = detectEnvironment(prefix, APK_TABS);

  // Extract commit ID
  const commitMatch = filename.match(/([a-f0-9]{7,})\.apk$/);
  const commit = commitMatch ? commitMatch[1] : null;

  return {
    environment,
    commit,
    isValid: commit !== null,
  };
}