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openchamber/packages/ui/src/components/chat/lib/messageDisplayNormalization.ts
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import type { Part } from '@opencode-ai/sdk/v2';
import { filterSyntheticParts } from '@/lib/messages/synthetic';
import { normalizeParts } from '../message/partUtils';
import type { ChatMessageEntry } from './turns/types';
export const hasCompactionPart = (message: ChatMessageEntry): boolean => {
return message.parts.some((part) => {
const type = (part as { type?: unknown } | null | undefined)?.type;
return type === 'compaction';
});
};
const normalizeCompactionCommandMessage = (message: ChatMessageEntry): ChatMessageEntry => {
if (!hasCompactionPart(message)) {
return message;
}
let changedParts = false;
const nextParts = message.parts.map((part) => {
const type = (part as { type?: unknown } | null | undefined)?.type;
if (type !== 'compaction') {
return part;
}
changedParts = true;
return { type: 'text', text: '/compact' } as Part;
});
const info = message.info as unknown as { clientRole?: string | null | undefined };
const needsClientRole = info.clientRole !== 'user';
if (!changedParts && !needsClientRole) {
return message;
}
return {
...message,
info: needsClientRole
? ({
...(message.info as unknown as Record<string, unknown>),
clientRole: 'user',
} as unknown as typeof message.info)
: message.info,
parts: changedParts ? nextParts : message.parts,
};
};
const normalizeMessageParts = (message: ChatMessageEntry): ChatMessageEntry => {
const parts = normalizeParts(message.parts);
if (parts.length === message.parts.length) {
return message;
}
return {
...message,
parts,
};
};
const normalizedMessageBySource = new WeakMap<ChatMessageEntry, ChatMessageEntry>();
export const getNormalizedMessageForDisplay = (message: ChatMessageEntry): ChatMessageEntry => {
const cached = normalizedMessageBySource.get(message);
if (cached) {
return cached;
}
const normalizedPartMessage = normalizeMessageParts(message);
const normalizedCompactionMessage = normalizeCompactionCommandMessage(normalizedPartMessage);
const filteredParts = filterSyntheticParts(normalizedCompactionMessage.parts);
const normalized = filteredParts === normalizedCompactionMessage.parts
? normalizedCompactionMessage
: {
...normalizedCompactionMessage,
parts: filteredParts,
};
normalizedMessageBySource.set(message, normalized);
return normalized;
};