Jesse_Chen
35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
type SessionModelWrite = {
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readonly values: { readonly model_id: string };
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readonly sessionId: string;
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readonly userId: string;
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};
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type SessionModelWriter = (write: SessionModelWrite) => PromiseLike<{
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found: boolean;
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error: string | null;
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}>;
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export async function persistSessionModelSelection(
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write: SessionModelWriter,
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userId: string,
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sessionId: string,
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modelId: string,
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) {
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const result = await write({ values: { model_id: modelId }, sessionId, userId });
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if (result.error) throw new Error(`云端同步失败：${result.error}`);
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if (!result.found) throw new Error("云端同步失败：对话不存在或无权修改");
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}
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export class SessionModelPersistenceQueue {
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private readonly pending = new Map<string, Promise<void>>();
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enqueue(sessionId: string, write: () => Promise<void>) {
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const previous = this.pending.get(sessionId) ?? Promise.resolve();
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const current = previous.catch(() => undefined).then(write);
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this.pending.set(sessionId, current);
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return current.finally(() => {
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if (this.pending.get(sessionId) === current) this.pending.delete(sessionId);
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});
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}
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}
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