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Scrapes SpaceflightNow launch schedule and\n * compares against a stored snapshot. Sends an email alert when\n * any of the tracked launches receive a new confirmed date/time.\n *\n * Tracked launches:\n * - Artemis II (SLS) — Kennedy Space Center, FL\n * - Starship Flight 12 — Starbase, Boca Chica, TX\n * - SpaceX Falcon 9 launches from Cape Canaveral / KSC (general)\n */\n\nimport { email } from \"https://esm.town/v/std/email\";\n\nconst BLOB_KEY = \"rocketLaunchMonitorState\";\n\n// ─── Config ────────────────────────────────────────────────────────────────\n\nconst TRACKED_LAUNCHES = [\n {\n id: \"artemis2\",\n label: \"🚀 Artemis II (SLS/Orion)\",\n keywords: [\"artemis\", \"artemis 2\", \"artemis ii\", \"sls\"],\n location: \"Kennedy Space Center, FL\",\n },\n {\n id: \"starship12\",\n label: \"🚀 Starship Flight 12 (V3)\",\n keywords: [\"starship\", \"flight 12\", \"starship 12\", \"booster 19\"],\n location: \"Starbase, Boca Chica, TX\",\n },\n {\n id: \"falconFlorida\",\n label: \"🚀 SpaceX Falcon 9 (Florida)\",\n keywords: [\"falcon 9\", \"falcon9\", \"starlink\"],\n location: \"Cape Canaveral / KSC, FL\",\n requireLocation: [\"cape canaveral\", \"kennedy space center\", \"slc-40\", \"lc-39\"],\n aprilWindow: true, // Only alert if April 11–18\n },\n];\n\nconst SOURCES = [\n \"https://spaceflightnow.com/launch-schedule/\",\n \"https://www.rocketlaunch.live/\",\n];\n\nconst ALERT_EMAIL = \"ccapoccia@gmail.com\";\n\n// ─── Types ──────────────────────────────────────────────────────────────────\n\ninterface LaunchEntry {\n id: string;\n label: string;\n rawText: string;\n detectedDate: string | null;\n source: string;\n lastSeen: string;\n}\n\ninterface MonitorState {\n launches: Record;\n lastRun: string;\n}\n\n// ─── Helpers ─────────────────────────────────────────────────────────────────\n\nfunction extractDateMentions(text: string): string | null {\n // Look for date patterns: \"April 3\", \"Apr 11\", \"March 6\", specific times, etc.\n const datePatterns = [\n /(?:january|february|march|april|may|june|july|august|september|october|november|december|jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)[,.\\s]+\\d{1,2}(?:[,.\\s]+2026)?(?:[,.\\s]+at[,.\\s]+[\\d:]+\\s*(?:am|pm|est|edt|utc|ct|cst|cdt))?/gi,\n /\\d{1,2}[\\/\\-]\\d{1,2}(?:[\\/\\-]2?0?2?6)?/g,\n /NET\\s+(?:April|March|May|June|Q[1-4])[^\\n,.]*/gi,\n /no earlier than[^\\n,.]*/gi,\n /targeted? for[^\\n,.]*/gi,\n /window opens[^\\n,.]*/gi,\n ];\n\n const found: string[] = [];\n for (const pattern of datePatterns) {\n const matches = text.match(pattern);\n if (matches) found.push(...matches.map((m) => m.trim()));\n }\n return found.length > 0 ? found.slice(0, 3).join(\" | \") : null;\n}\n\nfunction isApril11to18(dateStr: string | null): boolean {\n if (!dateStr) return false;\n const lower = dateStr.toLowerCase();\n for (let d = 11; d <= 18; d++) {\n if (lower.includes(`april ${d}`) || lower.includes(`apr ${d}`) || lower.includes(`apr. ${d}`)) {\n return true;\n }\n }\n return false;\n}\n\nasync function fetchPage(url: string): Promise {\n try {\n const res = await fetch(url, {\n headers: { \"User-Agent\": \"Mozilla/5.0 (compatible; LaunchMonitor/1.0)\" },\n signal: AbortSignal.timeout(15000),\n });\n if (!res.ok) throw new Error(`HTTP ${res.status}`);\n return await res.text();\n } catch (e) {\n console.error(`Failed to fetch ${url}:`, e);\n return \"\";\n }\n}\n\nfunction stripHtml(html: string): string {\n return html\n .replace(/]*>[\\s\\S]*?<\\/script>/gi, \"\")\n .replace(/]*>[\\s\\S]*?<\\/style>/gi, \"\")\n .replace(/<[^>]+>/g, \" \")\n .replace(/\\s{2,}/g, \" \")\n .toLowerCase();\n}\n\nfunction findRelevantSection(text: string, keywords: string[], windowSize = 600): string {\n const lower = text.toLowerCase();\n let bestIdx = -1;\n for (const kw of keywords) {\n const idx = lower.indexOf(kw.toLowerCase());\n if (idx !== -1 && (bestIdx === -1 || idx < bestIdx)) bestIdx = idx;\n }\n if (bestIdx === -1) return \"\";\n const start = Math.max(0, bestIdx - 100);\n const end = Math.min(text.length, bestIdx + windowSize);\n return text.slice(start, end);\n}\n\n// ─── State persistence via Val Town blob storage ──────────────────────────\n\nasync function loadState(): Promise {\n try {\n const res = await fetch(\n `https://blob.val.town/v1/blob/${encodeURIComponent(BLOB_KEY)}`,\n { headers: { Authorization: `Bearer ${Deno.env.get(\"valtown\")}` } }\n );\n if (!res.ok) throw new Error(\"not found\");\n return await res.json();\n } catch {\n return { launches: {}, lastRun: \"\" };\n }\n}\n\nasync function saveState(state: MonitorState): Promise {\n await fetch(\n `https://blob.val.town/v1/blob/${encodeURIComponent(BLOB_KEY)}`,\n {\n method: \"POST\",\n headers: {\n Authorization: `Bearer ${Deno.env.get(\"valtown\")}`,\n \"Content-Type\": \"application/json\",\n },\n body: JSON.stringify(state),\n }\n );\n}\n\n// ─── Main ─────────────────────────────────────────────────────────────────\n\nexport default async function monitor() {\n console.log(\"🚀 Rocket launch monitor running at\", new Date().toISOString());\n\n const state = await loadState();\n const alerts: string[] = [];\n const now = new Date().toISOString();\n\n // Fetch all sources\n const pages: Array<{ url: string; text: string }> = [];\n for (const url of SOURCES) {\n const html = await fetchPage(url);\n if (html) pages.push({ url, text: stripHtml(html) });\n }\n\n if (pages.length === 0) {\n console.error(\"No pages fetched successfully.\");\n return;\n }\n\n for (const launch of TRACKED_LAUNCHES) {\n let bestSection = \"\";\n let bestSource = \"\";\n\n for (const page of pages) {\n const section = findRelevantSection(page.text, launch.keywords);\n if (section.length > bestSection.length) {\n bestSection = section;\n bestSource = page.url;\n }\n\n // For location-gated launches (Falcon 9 FL), check location context\n if (launch.requireLocation) {\n const hasLocation = launch.requireLocation.some((loc) =>\n section.toLowerCase().includes(loc)\n );\n if (!hasLocation) continue;\n }\n }\n\n if (!bestSection) {\n console.log(`No data found for ${launch.id}`);\n continue;\n }\n\n const detectedDate = extractDateMentions(bestSection);\n const prev = state.launches[launch.id];\n\n // Determine if this is new/changed info\n const dateChanged = detectedDate && detectedDate !== prev?.detectedDate;\n const isNew = !prev;\n\n // For Falcon 9 FL, only alert if date is in April 11-18 window\n if (launch.aprilWindow) {\n if (!isApril11to18(detectedDate)) {\n console.log(`${launch.id}: No April 11-18 date detected, skipping alert`);\n state.launches[launch.id] = {\n id: launch.id,\n label: launch.label,\n rawText: bestSection.slice(0, 300),\n detectedDate,\n source: bestSource,\n lastSeen: now,\n };\n continue;\n }\n }\n\n if (isNew || dateChanged) {\n const changeDesc = isNew\n ? 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Diff · v1