/**
 * .env file parser shared between the SDK (syncEnv) and the CLI (--sync stdin).
 *
 * Kept as a standalone exported function (not a class method) so both the
 * SDK's ApplicationsResource and the CLI's stdin sync handler can use the
 * same implementation without coupling to either.
 *
 * @module
 */

/**
 * Parses .env-style content into a Map.
 *
 * Handles:
 * - Comments (lines starting with `#`)
 * - Empty lines (skipped)
 * - Quoted values (`"value"` or `'value'`)
 * - Values containing `=` (only the first `=` is the separator)
 * - Lines without `=` (skipped — invalid)
 *
 * @param content - File contents in KEY=VALUE format
 * @returns Map of key → value (empty string for `KEY=` with no value)
 */
export function parseEnvContent(content: string): Map<string, string> {
  const envVars = new Map<string, string>();
  for (const line of content.split("\n")) {
    const trimmed = line.trim();
    // Skip comments and empty lines.
    if (!trimmed || trimmed.startsWith("#")) continue;
    const eq = trimmed.indexOf("=");
    // Skip invalid lines (no `=`).
    if (eq === -1) continue;
    const key = trimmed.slice(0, eq).trim();
    let value = trimmed.slice(eq + 1).trim();
    // Strip matching surrounding quotes.
    if (
      (value.startsWith('"') && value.endsWith('"')) ||
      (value.startsWith("'") && value.endsWith("'"))
    ) {
      value = value.slice(1, -1);
    }
    if (key) envVars.set(key, value);
  }
  return envVars;
}