[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_105":106,"_107":108},"routes/embed.x.$handle.$name.$",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":20,"_21":-5},"handle","yuxiaoy","name","smzdm","path","notify.ts","project",{"_22":45,"_11":12,"_33":46,"_47":-5,"_48":42,"_49":50,"_51":50,"_52":53,"_54":-5,"_55":56,"_57":-5,"_58":42,"_59":-5,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":68,"_69":70,"_71":-5,"_72":73,"_74":73,"_75":76,"_77":76,"_78":76,"_79":73,"_80":73,"_81":82,"_83":84,"_85":86,"_87":42},"file",{"_22":23,"_11":14,"_24":25,"_26":-5,"_27":28,"_29":30,"_31":32,"_33":34,"_35":36,"_37":38,"_39":40,"_41":42,"_43":-5,"_13":44},"permalink","https://www.val.town/x/yuxiaoy/smzdm/code/notify.ts","extension","id","f21e3595-c10c-4619-9a15-aee0f6134a44","fileId","13405d34-8f57-11f1-bd72-1607ee4eb77e","parentId","branchId","8f6ec682-59da-11f1-9bcd-ee650bb23af1","branchVersion",44,"latest",true,"createdAt",["D",1786550432148],"version",3,"fileType","script","content","// Telegram delivery: rich HTML cards, digests, throttling and retries.\n//\n// Three problems with the previous implementation are fixed here. Sends are\n// serialised behind a shared interval so a burst of matches cannot trip\n// Telegram's per-chat rate limit; a 429 is honoured via `retry_after` instead\n// of being logged and dropped; and every send reports success so the caller\n// only records a deal as pushed once it actually arrived.\n\nimport type { Deal } from \"./smzdm.ts\";\nimport {\n BOT_TOKEN,\n CAPTION_LIMIT,\n CHAT_ID,\n chunkLines,\n escapeHtml,\n formatLocal,\n SEND_INTERVAL_MS,\n type Settings,\n sleep,\n TELEGRAM_RETRIES,\n TELEGRAM_TIMEOUT_MS,\n TEXT_LIMIT,\n truncate,\n} from \"./shared.ts\";\n\nconst API_BASE = `https://api.telegram.org/bot${BOT_TOKEN}`;\n\nlet nextSendAt = 0;\n\nasync function throttle(): Promise {\n const wait = nextSendAt - Date.now();\n if (wait > 0) await sleep(wait);\n nextSendAt = Date.now() + SEND_INTERVAL_MS;\n}\n\ninterface ApiResponse {\n ok: boolean;\n description?: string;\n parameters?: { retry_after?: number };\n}\n\n/** \"rejected\" means Telegram refused the payload itself, so retrying is futile. */\ntype Outcome = \"ok\" | \"failed\" | \"rejected\";\n\nasync function callApi(\n method: string,\n payload: Record,\n): Promise {\n for (let attempt = 0; attempt <= TELEGRAM_RETRIES; attempt++) {\n await throttle();\n\n let status: number;\n let body: ApiResponse;\n try {\n const response = await fetch(`${API_BASE}/${method}`, {\n method: \"POST\",\n headers: { \"content-type\": \"application/json\" },\n body: JSON.stringify(payload),\n signal: AbortSignal.timeout(TELEGRAM_TIMEOUT_MS),\n });\n status = response.status;\n body = await response.json() as ApiResponse;\n } catch (error) {\n console.warn(`[notify] ${method} network error:`, error);\n await sleep(1_000 * (attempt + 1));\n continue;\n }\n\n if (body.ok) return \"ok\";\n\n if (status === 429) {\n const retryAfter = body.parameters?.retry_after ?? 3;\n console.warn(`[notify] rate limited, waiting ${retryAfter}s`);\n await sleep((retryAfter + 1) * 1_000);\n continue;\n }\n if (status >= 500) {\n await sleep(1_000 * (attempt + 1));\n continue;\n }\n\n // 4xx other than 429 will not fix itself; stop and surface it.\n console.error(`[notify] ${method} failed ${status}: ${body.description}`);\n return \"rejected\";\n }\n\n console.error(`[notify] ${method} gave up after ${TELEGRAM_RETRIES} retries`);\n return \"failed\";\n}\n\n/**\n * Last resort when Telegram rejects a formatted payload, e.g. a title that\n * breaks HTML parsing. Losing the formatting beats losing the deal.\n */\nasync function sendPlain(text: string, silent = false): Promise {\n const outcome = await callApi(\"sendMessage\", {\n chat_id: CHAT_ID,\n text: truncate(text, TEXT_LIMIT),\n disable_notification: silent,\n link_preview_options: { is_disabled: true },\n });\n return outcome === \"ok\";\n}\n\n// --- Message building -------------------------------------------------------\n\nfunction link(url: string, label: string): string {\n return `${escapeHtml(label)}`;\n}\n\nfunction votes(deal: Deal): string {\n if (deal.worthy === 0 && deal.unworthy === 0) return \"\";\n const percent = deal.worthyPercent\n ? ` ${escapeHtml(deal.worthyPercent)}`\n : \"\";\n return `👍 ${deal.worthy} 👎 ${deal.unworthy}${percent}`;\n}\n\n/**\n * Truncates already-escaped HTML without ever cutting an entity in half, which\n * would make Telegram reject the whole message.\n */\nfunction truncateEscaped(escaped: string, max: number): string {\n if (escaped.length <= max) return escaped;\n let cut = escaped.slice(0, max - 1);\n const lastAmp = cut.lastIndexOf(\"&\");\n if (lastAmp !== -1 && !cut.slice(lastAmp).includes(\";\")) {\n cut = cut.slice(0, lastAmp);\n }\n return `${cut}…`;\n}\n\nfunction keyboard(deal: Deal): Record {\n const row: Record[] = [\n { text: \"🛒 去购买\", url: deal.buyUrl },\n { text: \"📄 原文\", url: deal.url },\n ];\n const rows = [row];\n\n const muteData = `bm:${deal.mall}`;\n // callback_data is capped at 64 bytes; skip the button rather than 400.\n if (deal.mall && new TextEncoder().encode(muteData).length <= 64) {\n rows.push([{ text: `🚫 屏蔽 ${deal.mall}`, callback_data: muteData }]);\n }\n return { inline_keyboard: rows };\n}\n\nexport interface CardOptions {\n rule: string;\n priceDropFrom?: number;\n settings: Settings;\n silent: boolean;\n}\n\nfunction buildCard(deal: Deal, options: CardOptions, limit: number): string {\n const lines: string[] = [];\n\n if (options.priceDropFrom !== undefined) {\n lines.push(\n `📉 降价 ${options.priceDropFrom} 元 → ` +\n `${deal.price ?? \"?\"} 元`,\n );\n }\n\n lines.push(`🔥 ${link(deal.url, deal.title)}`);\n if (deal.priceText) lines.push(`💰 ${escapeHtml(deal.priceText)}`);\n\n const meta = [\n deal.mall ? `🏬 ${escapeHtml(deal.mall)}` : \"\",\n votes(deal),\n deal.comments > 0 ? `💬 ${deal.comments}` : \"\",\n `🕒 ${formatLocal(deal.publishedAt)}`,\n ].filter(Boolean);\n lines.push(meta.join(\" · \"));\n\n const tags = [\n `🏷 ${escapeHtml(options.rule)}`,\n deal.referrals ? `爆料 ${escapeHtml(deal.referrals)}` : \"\",\n ].filter(Boolean);\n lines.push(tags.join(\" · \"));\n\n const head = lines.join(\"\\n\");\n if (!deal.content) return head;\n\n // The 爆料原文 explains how to stack coupons and is often the whole point of\n // the deal, so it gets whatever room is left in the message.\n const budget = limit - head.length - 8;\n if (budget < 40) return head;\n return `${head}\\n📝 ${truncateEscaped(escapeHtml(deal.content), budget)}`;\n}\n\nexport async function sendCard(\n deal: Deal,\n options: CardOptions,\n): Promise {\n const usePhoto = options.settings.photoMode === \"photo\" && deal.pic !== \"\";\n const limit = usePhoto ? CAPTION_LIMIT : TEXT_LIMIT;\n const text = buildCard(deal, options, limit);\n\n const common = {\n chat_id: CHAT_ID,\n parse_mode: \"HTML\",\n disable_notification: options.silent,\n reply_markup: keyboard(deal),\n };\n\n const outcome = usePhoto\n ? await callApi(\"sendPhoto\", { ...common, photo: deal.pic, caption: text })\n : await callApi(\"sendMessage\", {\n ...common,\n text,\n link_preview_options: options.settings.photoMode === \"preview\" && deal.pic\n ? { url: deal.pic, prefer_large_media: true, show_above_text: true }\n : { is_disabled: true },\n });\n\n if (outcome === \"ok\") return true;\n if (outcome === \"failed\") return false;\n return await sendPlain(\n `${deal.title}\\n${deal.priceText}\\n${deal.url}`,\n options.silent,\n );\n}\n\n/**\n * Overflow beyond MAX_CARDS_PER_RUN is summarised instead of dropped, so a\n * busy feed neither floods the chat nor loses matches.\n */\nexport async function sendDigest(\n entries: { deal: Deal; rule: string }[],\n silent: boolean,\n): Promise {\n if (entries.length === 0) return true;\n\n const lines = [\n `📦 另有 ${entries.length} 条命中`,\n ...entries.map(({ deal, rule }, index) => {\n const price = deal.priceText ? 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