/**
 * Creates OmO-specific environment context (time, timezone, locale).
 * Note: Working directory, platform, and date are already provided by OpenCode's system.ts,
 * so we only include fields that OpenCode doesn't provide to avoid duplication.
 * See: https://github.com/code-yeongyu/oh-my-opencode/issues/379
 */
export function createEnvContext(): string {
  const now = new Date()
  const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone
  const locale = Intl.DateTimeFormat().resolvedOptions().locale

  const dateStr = now.toLocaleDateString(locale, {
    weekday: "short",
    year: "numeric",
    month: "short",
    day: "numeric",
  })

  const timeStr = now.toLocaleTimeString(locale, {
    hour: "2-digit",
    minute: "2-digit",
    second: "2-digit",
    hour12: true,
  })

  return `
<omo-env>
  Current date: ${dateStr}
  Current time: ${timeStr}
  Timezone: ${timezone}
  Locale: ${locale}
</omo-env>`
}