export namespace Flag {
  // Snow-Code branding with backwards compatibility fallback to OPENCODE_*
  export const SNOWCODE_AUTO_SHARE = truthy("SNOWCODE_AUTO_SHARE") || truthy("OPENCODE_AUTO_SHARE")
  export const SNOWCODE_CONFIG = process.env["SNOWCODE_CONFIG"] || process.env["OPENCODE_CONFIG"]
  export const SNOWCODE_CONFIG_DIR = process.env["SNOWCODE_CONFIG_DIR"] || process.env["OPENCODE_CONFIG_DIR"]
  export const SNOWCODE_CONFIG_CONTENT = process.env["SNOWCODE_CONFIG_CONTENT"] || process.env["OPENCODE_CONFIG_CONTENT"]
  export const SNOWCODE_DISABLE_AUTOUPDATE = truthy("SNOWCODE_DISABLE_AUTOUPDATE") || truthy("OPENCODE_DISABLE_AUTOUPDATE")
  export const SNOWCODE_DISABLE_PRUNE = truthy("SNOWCODE_DISABLE_PRUNE") || truthy("OPENCODE_DISABLE_PRUNE")
  export const SNOWCODE_PERMISSION = process.env["SNOWCODE_PERMISSION"] || process.env["OPENCODE_PERMISSION"]
  export const SNOWCODE_DISABLE_DEFAULT_PLUGINS = truthy("SNOWCODE_DISABLE_DEFAULT_PLUGINS") || truthy("OPENCODE_DISABLE_DEFAULT_PLUGINS")
  export const SNOWCODE_DISABLE_LSP_DOWNLOAD = truthy("SNOWCODE_DISABLE_LSP_DOWNLOAD") || truthy("OPENCODE_DISABLE_LSP_DOWNLOAD")
  export const SNOWCODE_ENABLE_EXPERIMENTAL_MODELS = truthy("SNOWCODE_ENABLE_EXPERIMENTAL_MODELS") || truthy("OPENCODE_ENABLE_EXPERIMENTAL_MODELS")
  export const SNOWCODE_DISABLE_AUTOCOMPACT = truthy("SNOWCODE_DISABLE_AUTOCOMPACT") || truthy("OPENCODE_DISABLE_AUTOCOMPACT")
  export const SNOWCODE_DISABLE_LARGE_OUTPUT_HANDLER = truthy("SNOWCODE_DISABLE_LARGE_OUTPUT_HANDLER") || truthy("OPENCODE_DISABLE_LARGE_OUTPUT_HANDLER")

  // Experimental features
  export const SNOWCODE_EXPERIMENTAL_WATCHER = truthy("SNOWCODE_EXPERIMENTAL_WATCHER") || truthy("OPENCODE_EXPERIMENTAL_WATCHER")
  export const SNOWCODE_EXPERIMENTAL_TURN_SUMMARY = truthy("SNOWCODE_EXPERIMENTAL_TURN_SUMMARY") || truthy("OPENCODE_EXPERIMENTAL_TURN_SUMMARY")
  export const SNOWCODE_EXPERIMENTAL_NO_BOOTSTRAP = truthy("SNOWCODE_EXPERIMENTAL_NO_BOOTSTRAP") || truthy("OPENCODE_EXPERIMENTAL_NO_BOOTSTRAP")

  // Debug features
  export const SNOWCODE_DEBUG_TOKENS = truthy("SNOWCODE_DEBUG_TOKENS") || truthy("OPENCODE_DEBUG_TOKENS")
  export const SNOWCODE_DEBUG_TOOLS = truthy("SNOWCODE_DEBUG_TOOLS") || truthy("OPENCODE_DEBUG_TOOLS")

  // Legacy aliases for backwards compatibility (deprecated - map to SNOWCODE_)
  export const OPENCODE_AUTO_SHARE = SNOWCODE_AUTO_SHARE
  export const OPENCODE_CONFIG = SNOWCODE_CONFIG
  export const OPENCODE_CONFIG_DIR = SNOWCODE_CONFIG_DIR
  export const OPENCODE_CONFIG_CONTENT = SNOWCODE_CONFIG_CONTENT
  export const OPENCODE_DISABLE_AUTOUPDATE = SNOWCODE_DISABLE_AUTOUPDATE
  export const OPENCODE_DISABLE_PRUNE = SNOWCODE_DISABLE_PRUNE
  export const OPENCODE_PERMISSION = SNOWCODE_PERMISSION
  export const OPENCODE_DISABLE_DEFAULT_PLUGINS = SNOWCODE_DISABLE_DEFAULT_PLUGINS
  export const OPENCODE_DISABLE_LSP_DOWNLOAD = SNOWCODE_DISABLE_LSP_DOWNLOAD
  export const OPENCODE_ENABLE_EXPERIMENTAL_MODELS = SNOWCODE_ENABLE_EXPERIMENTAL_MODELS
  export const OPENCODE_DISABLE_AUTOCOMPACT = SNOWCODE_DISABLE_AUTOCOMPACT
  export const OPENCODE_EXPERIMENTAL_WATCHER = SNOWCODE_EXPERIMENTAL_WATCHER
  export const OPENCODE_EXPERIMENTAL_TURN_SUMMARY = SNOWCODE_EXPERIMENTAL_TURN_SUMMARY
  export const OPENCODE_EXPERIMENTAL_NO_BOOTSTRAP = SNOWCODE_EXPERIMENTAL_NO_BOOTSTRAP

  function truthy(key: string) {
    const value = process.env[key]?.toLowerCase()
    return value === "true" || value === "1"
  }
}