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fix for PWA background/foreground

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This commit is contained in:
buzzert
2026-07-23 16:32:20 -07:00
parent 4721717022
commit abc1124d27
2 changed files with 301 additions and 243 deletions
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web/src/lib/api.ts
+12 -150
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@@ -450,6 +450,7 @@ async function readSseStream(response: Response, dispatch: (eventName: string, p
let buffer = "";
let eventName = "message";
let dataLines: string[] = [];
let sawTerminalEvent = false;
const flushEvent = () => {
if (!dataLines.length) {
@@ -466,6 +467,9 @@ async function readSseStream(response: Response, dispatch: (eventName: string, p
}
dispatch(eventName, payload);
if (eventName === "done" || eventName === "error") {
sawTerminalEvent = true;
}
dataLines = [];
eventName = "message";
@@ -505,6 +509,10 @@ async function readSseStream(response: Response, dispatch: (eventName: string, p
}
}
flushEvent();
if (!sawTerminalEvent) {
throw new Error("Stream disconnected before completion");
}
}
export async function runSearchStream(
@@ -528,87 +536,14 @@ export async function runSearchStream(
signal: options?.signal,
});
if (!response.ok) {
const fallback = `${response.status} ${response.statusText}`;
let message = fallback;
try {
const body = (await response.json()) as { message?: string };
if (body.message) message = body.message;
} catch {
// keep fallback message
}
throw new Error(message);
}
if (!response.body) {
throw new Error("No response stream");
}
const reader = response.body.getReader();
const decoder = new TextDecoder();
let buffer = "";
let eventName = "message";
let dataLines: string[] = [];
const flushEvent = () => {
if (!dataLines.length) {
eventName = "message";
return;
}
const dataText = dataLines.join("\n");
let payload: any = null;
try {
payload = JSON.parse(dataText);
} catch {
payload = { message: dataText };
}
await readSseStream(response, (eventName, payload) => {
if (eventName === "search_results") handlers.onSearchResults?.(payload);
else if (eventName === "search_error") handlers.onSearchError?.(payload);
else if (eventName === "answer") handlers.onAnswer?.(payload);
else if (eventName === "answer_error") handlers.onAnswerError?.(payload);
else if (eventName === "done") handlers.onDone?.(payload);
else if (eventName === "error") handlers.onError?.(payload);
dataLines = [];
eventName = "message";
};
while (true) {
const { value, done } = await reader.read();
if (done) break;
buffer += decoder.decode(value, { stream: true });
let newlineIndex = buffer.indexOf("\n");
while (newlineIndex >= 0) {
const rawLine = buffer.slice(0, newlineIndex);
buffer = buffer.slice(newlineIndex + 1);
const line = rawLine.endsWith("\r") ? rawLine.slice(0, -1) : rawLine;
if (!line) {
flushEvent();
} else if (line.startsWith("event:")) {
eventName = line.slice("event:".length).trim();
} else if (line.startsWith("data:")) {
dataLines.push(line.slice("data:".length).trimStart());
}
newlineIndex = buffer.indexOf("\n");
}
}
buffer += decoder.decode();
if (buffer.length) {
const line = buffer.endsWith("\r") ? buffer.slice(0, -1) : buffer;
if (line.startsWith("event:")) {
eventName = line.slice("event:".length).trim();
} else if (line.startsWith("data:")) {
dataLines.push(line.slice("data:".length).trimStart());
}
}
flushEvent();
});
}
export async function attachSearchStream(searchId: string, handlers: RunSearchStreamHandlers, options?: { signal?: AbortSignal }) {
@@ -679,86 +614,13 @@ export async function runCompletionStream(
signal: options?.signal,
});
if (!response.ok) {
const fallback = `${response.status} ${response.statusText}`;
let message = fallback;
try {
const body = (await response.json()) as { message?: string };
if (body.message) message = body.message;
} catch {
// keep fallback message
}
throw new Error(message);
}
if (!response.body) {
throw new Error("No response stream");
}
const reader = response.body.getReader();
const decoder = new TextDecoder();
let buffer = "";
let eventName = "message";
let dataLines: string[] = [];
const flushEvent = () => {
if (!dataLines.length) {
eventName = "message";
return;
}
const dataText = dataLines.join("\n");
let payload: any = null;
try {
payload = JSON.parse(dataText);
} catch {
payload = { message: dataText };
}
await readSseStream(response, (eventName, payload) => {
if (eventName === "meta") handlers.onMeta?.(payload);
else if (eventName === "tool_call") handlers.onToolCall?.(payload);
else if (eventName === "delta") handlers.onDelta?.(payload);
else if (eventName === "done") handlers.onDone?.(payload);
else if (eventName === "error") handlers.onError?.(payload);
dataLines = [];
eventName = "message";
};
while (true) {
const { value, done } = await reader.read();
if (done) break;
buffer += decoder.decode(value, { stream: true });
let newlineIndex = buffer.indexOf("\n");
while (newlineIndex >= 0) {
const rawLine = buffer.slice(0, newlineIndex);
buffer = buffer.slice(newlineIndex + 1);
const line = rawLine.endsWith("\r") ? rawLine.slice(0, -1) : rawLine;
if (!line) {
flushEvent();
} else if (line.startsWith("event:")) {
eventName = line.slice("event:".length).trim();
} else if (line.startsWith("data:")) {
dataLines.push(line.slice("data:".length).trimStart());
}
newlineIndex = buffer.indexOf("\n");
}
}
buffer += decoder.decode();
if (buffer.length) {
const line = buffer.endsWith("\r") ? buffer.slice(0, -1) : buffer;
if (line.startsWith("event:")) {
eventName = line.slice("event:".length).trim();
} else if (line.startsWith("data:")) {
dataLines.push(line.slice("data:".length).trimStart());
}
}
flushEvent();
});
}
export async function attachCompletionStream(chatId: string, handlers: CompletionStreamHandlers, options?: { signal?: AbortSignal }) {