File size: 3,979 Bytes
fc93158 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | import { createDraftStreamLoop } from "../channels/draft-stream-loop.js";
import { deleteSlackMessage, editSlackMessage } from "./actions.js";
import { sendMessageSlack } from "./send.js";
const SLACK_STREAM_MAX_CHARS = 4000;
const DEFAULT_THROTTLE_MS = 1000;
export type SlackDraftStream = {
update: (text: string) => void;
flush: () => Promise<void>;
clear: () => Promise<void>;
stop: () => void;
forceNewMessage: () => void;
messageId: () => string | undefined;
channelId: () => string | undefined;
};
export function createSlackDraftStream(params: {
target: string;
token: string;
accountId?: string;
maxChars?: number;
throttleMs?: number;
resolveThreadTs?: () => string | undefined;
onMessageSent?: () => void;
log?: (message: string) => void;
warn?: (message: string) => void;
send?: typeof sendMessageSlack;
edit?: typeof editSlackMessage;
remove?: typeof deleteSlackMessage;
}): SlackDraftStream {
const maxChars = Math.min(params.maxChars ?? SLACK_STREAM_MAX_CHARS, SLACK_STREAM_MAX_CHARS);
const throttleMs = Math.max(250, params.throttleMs ?? DEFAULT_THROTTLE_MS);
const send = params.send ?? sendMessageSlack;
const edit = params.edit ?? editSlackMessage;
const remove = params.remove ?? deleteSlackMessage;
let streamMessageId: string | undefined;
let streamChannelId: string | undefined;
let lastSentText = "";
let stopped = false;
const sendOrEditStreamMessage = async (text: string) => {
if (stopped) {
return;
}
const trimmed = text.trimEnd();
if (!trimmed) {
return;
}
if (trimmed.length > maxChars) {
stopped = true;
params.warn?.(`slack stream preview stopped (text length ${trimmed.length} > ${maxChars})`);
return;
}
if (trimmed === lastSentText) {
return;
}
lastSentText = trimmed;
try {
if (streamChannelId && streamMessageId) {
await edit(streamChannelId, streamMessageId, trimmed, {
token: params.token,
accountId: params.accountId,
});
return;
}
const sent = await send(params.target, trimmed, {
token: params.token,
accountId: params.accountId,
threadTs: params.resolveThreadTs?.(),
});
streamChannelId = sent.channelId || streamChannelId;
streamMessageId = sent.messageId || streamMessageId;
if (!streamChannelId || !streamMessageId) {
stopped = true;
params.warn?.("slack stream preview stopped (missing identifiers from sendMessage)");
return;
}
params.onMessageSent?.();
} catch (err) {
stopped = true;
params.warn?.(
`slack stream preview failed: ${err instanceof Error ? err.message : String(err)}`,
);
}
};
const loop = createDraftStreamLoop({
throttleMs,
isStopped: () => stopped,
sendOrEditStreamMessage,
});
const stop = () => {
stopped = true;
loop.stop();
};
const clear = async () => {
stop();
await loop.waitForInFlight();
const channelId = streamChannelId;
const messageId = streamMessageId;
streamChannelId = undefined;
streamMessageId = undefined;
lastSentText = "";
if (!channelId || !messageId) {
return;
}
try {
await remove(channelId, messageId, {
token: params.token,
accountId: params.accountId,
});
} catch (err) {
params.warn?.(
`slack stream preview cleanup failed: ${err instanceof Error ? err.message : String(err)}`,
);
}
};
const forceNewMessage = () => {
streamMessageId = undefined;
streamChannelId = undefined;
lastSentText = "";
loop.resetPending();
};
params.log?.(`slack stream preview ready (maxChars=${maxChars}, throttleMs=${throttleMs})`);
return {
update: loop.update,
flush: loop.flush,
clear,
stop,
forceNewMessage,
messageId: () => streamMessageId,
channelId: () => streamChannelId,
};
}
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