[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_176":177,"_178":179},"routes/_app.x.$handle.$name",{"_102":101,"_37":50,"_111":92,"_32":112,"_13":14,"_113":-5,"_11":114,"_115":116,"_117":118,"_119":120,"_121":122,"_26":-5,"_123":-5,"_124":-5,"_125":30,"_126":127,"_128":30,"_129":-5,"_130":-5,"_131":132},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":18,"_19":-5},"project",{"_48":49,"_37":50,"_43":51,"_52":-5,"_53":30,"_54":55,"_56":55,"_57":58,"_59":-5,"_19":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":-5,"_72":-5,"_73":-5,"_74":-5,"_75":76,"_77":76,"_78":79,"_80":79,"_81":79,"_82":76,"_83":76,"_84":85,"_86":87,"_88":89,"_90":30},"version",2,"changes",[25],"aiChatInfo",{"_20":21,"_22":-5,"_23":-5,"_24":-5},"userId","aiChatMessageId","254933c7-45f4-4d2c-afd8-99bdefd1b9c2","aiChatThreadId","aiChatThreadUserId","aiChatThreadTitle",{"_26":27,"_28":-7,"_29":30,"_31":30,"_32":33,"_34":33},"file",{"_35":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":14,"_46":47,"_29":30},"previous","deleted",false,"deletedHere","path","backend/signals.ts","latestPath","fileId","70af5d58-5456-11f1-8e3c-ee650bb23af1","name","signals.ts","fileType","script","content","// Technical analysis & probability signal engine\n// Computes RSI, MACD, Moving Averages, and overall signal strength\n\nexport interface Candle {\n time: number;\n open: number;\n high: number;\n low: number;\n close: number;\n volume: number;\n}\n\nexport interface Signal {\n type: \"BUY\" | \"SELL\" | \"NEUTRAL\";\n strength: number; // 0-100\n confidence: number; // 0-100\n reasons: string[];\n indicators: {\n rsi: number;\n macdSignal: \"BUY\" | \"SELL\" | \"NEUTRAL\";\n sma20Trend: \"UP\" | \"DOWN\" | \"FLAT\";\n ema9Trend: \"UP\" | \"DOWN\" | \"FLAT\";\n volumeTrend: \"HIGH\" | \"NORMAL\" | \"LOW\";\n bollingerPosition: \"UPPER\" | \"MIDDLE\" | \"LOWER\";\n };\n}\n\nfunction calcSMA(data: number[], period: number): number[] {\n const result: number[] = [];\n for (let i = 0; i < data.length; i++) {\n if (i < period - 1) { result.push(NaN); continue; }\n const sum = data.slice(i - period + 1, i + 1).reduce((a, b) => a + b, 0);\n result.push(sum / period);\n }\n return result;\n}\n\nfunction calcEMA(data: number[], period: number): number[] {\n const result: number[] = [];\n const k = 2 / (period + 1);\n let ema = data[0];\n result.push(ema);\n for (let i = 1; i < data.length; i++) {\n ema = data[i] * k + ema * (1 - k);\n result.push(ema);\n }\n return result;\n}\n\nfunction calcRSI(closes: number[], period = 14): number {\n if (closes.length < period + 1) return 50;\n let gains = 0, losses = 0;\n for (let i = closes.length - period; i < closes.length; i++) {\n const diff = closes[i] - closes[i - 1];\n if (diff > 0) gains += diff;\n else losses -= diff;\n }\n if (losses === 0) return 100;\n const rs = (gains / period) / (losses / period);\n return 100 - (100 / (1 + rs));\n}\n\nfunction calcMACD(closes: number[]): { macd: number; signal: number; histogram: number } {\n const ema12 = calcEMA(closes, 12);\n const ema26 = calcEMA(closes, 26);\n const macdLine = ema12.map((v, i) => v - ema26[i]);\n const signalLine = calcEMA(macdLine, 9);\n const last = macdLine.length - 1;\n return {\n macd: macdLine[last],\n signal: signalLine[last],\n histogram: macdLine[last] - signalLine[last],\n };\n}\n\nfunction calcBollingerBands(closes: number[], period = 20, stdDev = 2) {\n const sma = calcSMA(closes, period);\n const last = closes.length - 1;\n const smaLast = sma[last];\n if (isNaN(smaLast)) return { upper: 0, middle: 0, lower: 0, position: \"MIDDLE\" as const };\n\n const slice = closes.slice(last - period + 1, last + 1);\n const variance = slice.reduce((sum, v) => sum + Math.pow(v - smaLast, 2), 0) / period;\n const sd = Math.sqrt(variance);\n\n const upper = smaLast + stdDev * sd;\n const lower = smaLast - stdDev * sd;\n const price = closes[last];\n\n let position: \"UPPER\" | \"MIDDLE\" | \"LOWER\" = \"MIDDLE\";\n if (price > smaLast + sd) position = \"UPPER\";\n else if (price < smaLast - sd) position = \"LOWER\";\n\n return { upper, middle: smaLast, lower, position };\n}\n\nexport function analyzeSignals(candles: Candle[]): Signal {\n if (candles.length < 30) {\n return {\n type: \"NEUTRAL\",\n strength: 50,\n confidence: 10,\n reasons: [\"Không đủ dữ liệu để phân tích (cần ≥30 nến)\"],\n indicators: {\n rsi: 50, macdSignal: \"NEUTRAL\", sma20Trend: \"FLAT\",\n ema9Trend: \"FLAT\", volumeTrend: \"NORMAL\", bollingerPosition: \"MIDDLE\",\n },\n };\n }\n\n const closes = candles.map(c => c.close);\n const volumes = candles.map(c => c.volume);\n const reasons: string[] = [];\n let buyScore = 0;\n let sellScore = 0;\n\n // RSI\n const rsi = calcRSI(closes);\n if (rsi < 30) { buyScore += 25; reasons.push(`RSI quá bán (${rsi.toFixed(1)})`); }\n else if (rsi > 70) { sellScore += 25; reasons.push(`RSI quá mua (${rsi.toFixed(1)})`); }\n else if (rsi < 45) { buyScore += 10; reasons.push(`RSI hướng mua (${rsi.toFixed(1)})`); }\n else if (rsi > 55) { sellScore += 10; reasons.push(`RSI hướng bán (${rsi.toFixed(1)})`); }\n\n // MACD\n const macd = calcMACD(closes);\n let macdSignal: \"BUY\" | \"SELL\" | \"NEUTRAL\" = \"NEUTRAL\";\n if (macd.histogram > 0 && macd.macd > macd.signal) {\n buyScore += 20; macdSignal = \"BUY\";\n reasons.push(\"MACD cắt lên (tín hiệu mua)\");\n } else if (macd.histogram < 0 && macd.macd < macd.signal) {\n sellScore += 20; macdSignal = \"SELL\";\n reasons.push(\"MACD cắt xuống (tín hiệu bán)\");\n }\n\n // SMA20 trend\n const sma20 = calcSMA(closes, 20);\n const last = closes.length - 1;\n const sma20Last = sma20[last];\n let sma20Trend: \"UP\" | \"DOWN\" | \"FLAT\" = \"FLAT\";\n if (closes[last] > sma20Last * 1.01) {\n buyScore += 15; sma20Trend = \"UP\";\n reasons.push(\"Giá trên SMA20 (xu hướng tăng)\");\n } else if (closes[last] < sma20Last * 0.99) {\n sellScore += 15; sma20Trend = \"DOWN\";\n reasons.push(\"Giá dưới SMA20 (xu hướng giảm)\");\n }\n\n // EMA9 trend\n const ema9 = calcEMA(closes, 9);\n let ema9Trend: \"UP\" | \"DOWN\" | \"FLAT\" = \"FLAT\";\n if (ema9[last] > ema9[last - 3]) {\n buyScore += 10; ema9Trend = \"UP\";\n reasons.push(\"EMA9 đang tăng\");\n } else if (ema9[last] < ema9[last - 3]) {\n sellScore += 10; ema9Trend = \"DOWN\";\n reasons.push(\"EMA9 đang giảm\");\n }\n\n // Volume analysis\n const avgVol = volumes.slice(-20).reduce((a, b) => a + b, 0) / 20;\n const lastVol = volumes[last];\n let volumeTrend: \"HIGH\" | \"NORMAL\" | \"LOW\" = \"NORMAL\";\n if (lastVol > avgVol * 1.5) {\n volumeTrend = \"HIGH\";\n reasons.push(\"Khối lượng cao bất thường (xác nhận xu hướng)\");\n if (buyScore > sellScore) buyScore += 10;\n else sellScore += 10;\n } else if (lastVol < avgVol * 0.5) {\n volumeTrend = \"LOW\";\n reasons.push(\"Khối lượng thấp (xu hướng yếu)\");\n }\n\n // Bollinger Bands\n const bb = calcBollingerBands(closes);\n if (bb.position === \"LOWER\") {\n buyScore += 15;\n reasons.push(\"Giá ở dải Bollinger dưới (có thể bật lên)\");\n } else if (bb.position === \"UPPER\") {\n sellScore += 15;\n reasons.push(\"Giá ở dải Bollinger trên (có thể điều chỉnh)\");\n }\n\n // Calculate final signal\n const totalScore = buyScore + sellScore || 1;\n const buyPct = (buyScore / totalScore) * 100;\n const sellPct = (sellScore / totalScore) * 100;\n\n let type: \"BUY\" | \"SELL\" | \"NEUTRAL\" = \"NEUTRAL\";\n let strength = 50;\n\n if (buyPct > 60) {\n type = \"BUY\";\n strength = Math.min(95, buyPct);\n } else if (sellPct > 60) {\n type = \"SELL\";\n strength = Math.min(95, sellPct);\n }\n\n const confidence = Math.min(90, Math.abs(buyScore - sellScore) * 2 + reasons.length * 5);\n\n return {\n type,\n strength: Math.round(strength),\n confidence: Math.round(confidence),\n reasons,\n indicators: {\n rsi: Math.round(rsi * 10) / 10,\n macdSignal,\n sma20Trend,\n ema9Trend,\n volumeTrend,\n bollingerPosition: bb.position,\n },\n };\n}\n","createdAt",["D",1779286565955],"branchVersion","branchId","4f164698-5456-11f1-b185-ee650bb23af1","id","4f15590e-5456-11f1-b185-ee650bb23af1","trading-signals",["D",1779286509590],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","TradingView-like charts with probability signals","imageUrl","dc5e8e8b-d4bb-46c6-976e-943266f77e93","pinnedFileId","c21d5974-5456-11f1-983e-ee650bb23af1","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","019e45b7-9b83-73b3-a72a-a32f9fa01ccb","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_102":101,"_110":106},"org",{"_102":101,"_103":104,"_105":106,"_19":60,"_107":108,"_109":30},"branch",{"_13":91,"_37":92,"_48":47,"_93":49,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":-5,"_99":50,"_100":101},"isOwned",21,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","minhheoaaa","handle","displayName","Zola Hammonds","avatar","https://lh3.googleusercontent.com/a/ACg8ocIn7Ohie3qSo9ApmpO1WvNL9JvK4p_geYXcKnJng3Y1TQFMCw=s96-c","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_48":49,"_37":50,"_43":172,"_52":-5,"_53":30,"_54":55,"_56":55,"_57":58,"_59":-5,"_19":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":-5,"_72":-5,"_73":-5,"_74":-5,"_75":76,"_77":76,"_78":79,"_80":79,"_81":79,"_82":76,"_83":76,"_84":173,"_86":174,"_88":175,"_90":30},"tree",[154],"files",[154,155,156],"counts",{"_144":68,"_145":138,"_146":68,"_147":148,"_149":150},"contents",[133],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_48":134,"_37":135,"_35":136,"_137":-5,"_46":47,"_45":138,"_139":64,"_43":140,"_13":68,"_39":141,"_41":-5,"_29":30,"_142":-5,"_32":143},"5d9793f2-5456-11f1-b185-ee650bb23af1","backend","2260821e-89ec-4d68-a12d-383bb3f7a2da","parentId",1,"latest",["D",1779286533919],"directory","label",[135],"pulls","branches","forks","envVars",{"_151":138,"_153":68},"connections",{"_151":68,"_152":68},"count","unfilledCount","emptyCount",{"_48":134,"_37":135,"_35":136,"_137":-5,"_46":47,"_45":138,"_139":64,"_43":169,"_13":68,"_39":141,"_41":-5,"_29":30,"_142":-5,"_159":170,"_32":171},{"_48":162,"_37":163,"_35":164,"_137":136,"_46":47,"_45":138,"_139":30,"_43":165,"_13":68,"_39":40,"_41":166,"_29":30,"_142":-5,"_159":167,"_32":168},{"_48":157,"_37":38,"_35":36,"_137":136,"_46":47,"_45":14,"_139":64,"_43":158,"_13":68,"_39":40,"_41":42,"_29":30,"_142":-5,"_159":160,"_32":161},"70af5cb8-5456-11f1-8e3c-ee650bb23af1",["D",1779286565955],"children",[],[135,38],"5d9770b6-5456-11f1-b185-ee650bb23af1","api.ts","5d97723c-5456-11f1-b185-ee650bb23af1",["D",1779286533919],"// TradingView18 API proxy - handles all RapidAPI calls with caching & rate limiting\n\nconst API_HOST = \"tradingview18.p.rapidapi.com\";\nconst BASE_URL = `https://${API_HOST}`;\n\nfunction getApiKey(): string {\n const key = Deno.env.get(\"RAPIDAPI_KEY\");\n if (!key) throw new Error(\"RAPIDAPI_KEY env var not set\");\n return key;\n}\n\nconst headers = () => ({\n \"Content-Type\": \"application/json\",\n \"x-rapidapi-host\": API_HOST,\n \"x-rapidapi-key\": getApiKey(),\n});\n\n// Simple in-memory cache with TTL\nconst cache = new Map();\nconst CACHE_TTL = 30_000; // 30 seconds\n\nfunction getCached(key: string): T | null {\n const entry = cache.get(key);\n if (entry && entry.expires > Date.now()) return entry.data as T;\n cache.delete(key);\n return null;\n}\n\nfunction setCache(key: string, data: unknown, ttl = CACHE_TTL) {\n cache.set(key, { data, expires: Date.now() + ttl });\n // Evict old entries if cache gets too big\n if (cache.size > 200) {\n const now = Date.now();\n for (const [k, v] of cache) {\n if (v.expires < now) cache.delete(k);\n }\n }\n}\n\n// Rate limiting\nlet requestCount = 0;\nlet windowStart = Date.now();\nconst MAX_REQUESTS_PER_MINUTE = 25;\n\nfunction checkRateLimit(): boolean {\n const now = Date.now();\n if (now - windowStart > 60_000) {\n requestCount = 0;\n windowStart = now;\n }\n if (requestCount >= MAX_REQUESTS_PER_MINUTE) return false;\n requestCount++;\n return true;\n}\n\nasync function apiRequest(path: string, params?: Record): Promise {\n const url = new URL(path, BASE_URL);\n if (params) {\n for (const [k, v] of Object.entries(params)) {\n url.searchParams.set(k, v);\n }\n }\n\n const cacheKey = url.toString();\n const cached = getCached(cacheKey);\n if (cached) return cached;\n\n if (!checkRateLimit()) {\n throw new Error(\"Rate limit exceeded. Please wait a moment.\");\n }\n\n const resp = await fetch(url.toString(), { headers: headers() });\n if (!resp.ok) {\n const text = await resp.text();\n throw new Error(`API error ${resp.status}: ${text}`);\n }\n const data = await resp.json();\n setCache(cacheKey, data);\n return data;\n}\n\n// --- Public API functions ---\n\nexport async function searchSymbols(query: string) {\n return apiRequest(\"/symbols/auto-complete\", { query });\n}\n\nexport async function getStockChart(symbol: string, timeframe: string = \"1D\") {\n return apiRequest(\"/stock/get-chart\", { symbol, timeframe });\n}\n\nexport async function getStockSummary(symbol: string) {\n return apiRequest(\"/stock/get-summary\", { symbol });\n}\n\nexport async function getStockProfile(symbol: string) {\n return apiRequest(\"/stock/get-profile\", { symbol });\n}\n\nexport async function getMarketMovers(country: string = \"US\") {\n return apiRequest(\"/market/get-movers\", { country });\n}\n\nexport async function getCryptoCoins() {\n return apiRequest(\"/crypto/get-coins\");\n}\n\nexport { apiRequest };\n",[],[135,163],["D",1779286533919],[155,156],[135],["D",1779286509590],{"_102":101,"_110":106},{"_102":101,"_103":104,"_105":106,"_19":60,"_107":108,"_109":30},{"_13":91,"_37":92,"_48":47,"_93":49,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":-5,"_99":50,"_100":101},"ctx",{"_84":-5,"_130":209,"_210":211,"_212":213,"_214":30,"_215":30,"_216":30,"_217":64,"_218":-5,"_219":-7,"_220":-7,"_221":68,"_222":30,"_223":30,"_224":-5,"_225":30,"_226":30,"_227":30,"_228":-5},"ENV",{"_180":181,"_182":183,"_184":92,"_185":186,"_187":188,"_189":190,"_191":192,"_193":194,"_195":196,"_197":198,"_199":200,"_201":202,"_203":204,"_205":206,"_207":208},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

Diff · v2