messageChannel?: string;

messageProvider?: string;

} {

const isRunnableChannelName = (channel: string) =>

!channel.includes(":") && !channel.includes("/");

const explicitChannel = normalizeOptionalString(params.channelId);

const explicitProvider = normalizeOptionalString(params.messageProvider);

// A channelId that contains ":" is a scoped conversation id (e.g. Telegram

// forum-topic "-100123:topic:77"), not a runnable channel name. Using it as

// the embedded recall run's channel causes bundled-plugin dirName validation

// to throw because ":" is not allowed in directory names (#76704).

// forum-topic "-100123:topic:77") or "/" (e.g. Google Chat "spaces/...") is

// not a runnable channel name. Using it as the embedded recall run's channel

// causes bundled-plugin dirName validation to throw (#76704, #78918).

const runnableExplicitChannel =

explicitChannel && !explicitChannel.includes(":") ? explicitChannel : undefined;

explicitChannel && isRunnableChannelName(explicitChannel) ? explicitChannel : undefined;

const trustedExplicitChannel =

runnableExplicitChannel && runnableExplicitChannel !== explicitProvider

? runnableExplicitChannel

const rawStrongEntryChannel =

normalizeOptionalString(sessionEntry?.lastChannel) ??

normalizeOptionalString(sessionEntry?.channel);

// Channel IDs containing ":" are scoped conversation IDs (e.g. QQ c2c

// "c2c:10D4F7C2..."), not runnable channel names. The same guard that

// Channel IDs containing ":" or "/" are scoped conversation IDs, not

// runnable channel names. The same guard that

// applies to explicit channelId (#76704) must also apply to channels

// read from the session store (#77396).

const strongEntryChannel =

rawStrongEntryChannel && !rawStrongEntryChannel.includes(":")

rawStrongEntryChannel && isRunnableChannelName(rawStrongEntryChannel)

? rawStrongEntryChannel

: undefined;

const weakEntryChannel = normalizeOptionalString(sessionEntry?.origin?.provider);