Historical Portfolio Analyzer

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Fetching historical data for all tickers... Calculating metrics... Generating report...

\n\n\n`;\n}\n\n// --- HONO ROUTER & MAIN HANDLER ---\nconst app = new Hono();\n\napp.use(\"*\", cors());\n\napp.get(\"/\", (c) => c.html(generateHtml()));\n\nasync function fetchFromYahoo(ticker, startDate, endDate) {\n const period1 = Math.floor(new Date(startDate).getTime() / 1000);\n const period2 = Math.floor(new Date(endDate).getTime() / 1000);\n const url =\n `https://query1.finance.yahoo.com/v8/finance/chart/${ticker}?period1=${period1}&period2=${period2}&interval=1d`;\n\n const response = await fetch(url, {\n headers: {\n // Mimic a browser User-Agent to avoid being blocked\n \"User-Agent\":\n \"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36\",\n },\n });\n\n if (!response.ok) {\n console.error(\n `Yahoo Finance request failed for ${ticker} with status ${response.status}`,\n );\n return null;\n }\n\n const json = await response.json();\n const chartData = json.chart.result[0];\n\n if (!chartData || !chartData.timestamp) {\n console.error(`No data returned from Yahoo Finance for ${ticker}`);\n return null;\n }\n\n const timestamps = chartData.timestamp;\n const prices = chartData.indicators.quote[0].close;\n\n // Combine timestamps and prices into the format our app expects\n const data = timestamps.map((ts, i) => {\n // The timestamp is in seconds, convert to YYYY-MM-DD\n const date = new Date(ts * 1000).toISOString().split(\"T\")[0];\n return {\n date: date,\n close: prices[i],\n };\n }).filter((d) => d.close !== null); // Filter out any null price points (e.g. market holidays)\n\n return data;\n}\n\napp.post(\"/api/report\", async (c) => {\n try {\n const { tickers, startDate, endDate } = await c.req.json();\n if (!tickers) return c.json({ error: \"Tickers are required.\" }, 400);\n\n const tickerList = tickers.split(\",\").map((t) => t.trim().toUpperCase())\n .filter(Boolean);\n if (tickerList.length === 0) {\n return c.json({ error: \"Please provide valid tickers.\" }, 400);\n }\n\n // Fetch data directly from Yahoo\n const promises = tickerList.map((ticker) =>\n fetchFromYahoo(ticker, startDate, endDate)\n .then((data) => ({ ticker, data }))\n .catch((err) => {\n console.error(`Error fetching ${ticker}:`, err);\n return { ticker, error: err.message };\n })\n );\n\n const results = await Promise.all(promises);\n const successfulResults = results.filter((r) =>\n r.data && !r.error && r.data.length > 1\n );\n\n if (successfulResults.length === 0) {\n return c.json({\n error:\n \"Could not fetch valid historical data for any of the provided tickers from Yahoo Finance.\",\n }, 404);\n }\n\n const analysis = processHistoricalData(successfulResults);\n\n const userInput = `\n --- PORTFOLIO & PERIOD ---\n Tickers: ${successfulResults.map((r) => r.ticker).join(\", \")}\n Analysis Period: ${startDate} to ${endDate}\n\n --- PROCESSED HISTORICAL DATA ---\n ${JSON.stringify(analysis, null, 2)}\n `;\n\n const openai = new OpenAI();\n const completion = await openai.chat.completions.create({\n model: \"gpt-4o\",\n messages: [\n { role: \"system\", content: PORTFOLIO_ANALYST_PROMPT },\n { role: \"user\", content: userInput },\n ],\n temperature: 0.1,\n });\n\n const report = completion.choices[0].message.content;\n\n return c.json({ report, analysis });\n } catch (error) {\n console.error(\"Report Generation Error:\", error);\n return c.json({\n error: error.message || \"An internal server error occurred.\",\n }, 500);\n }\n});\n\nexport default app.fetch;","deleted","label","children",[],[100],"files",[154],"counts",{"_176":32,"_177":178,"_179":32,"_180":181},"pulls","branches",1,"forks","envVars",{"_182":32,"_183":32},"count","emptyCount","contents",[],"file",{"_105":155,"_96":100,"_156":117,"_157":-5,"_158":142,"_159":102,"_160":22,"_107":188,"_101":162,"_163":164,"_165":166,"_167":22,"_168":97,"_99":189},["D",1754625825423],[100],"upstreamProject","upstreamBranch","emptyEnvVars","isNew","flags",[],"routes/_app.x.$handle.$name.branch.$branch.version.$version.code.$",{"_94":95,"_96":97,"_98":44,"_101":102,"_99":100,"_103":198,"_152":203,"_172":207,"_186":208,"_184":210,"_211":-5,"_212":-5,"_213":-5,"_214":-5,"_215":216,"_180":-5},{"_105":106,"_96":97,"_107":199,"_109":-5,"_110":22,"_111":112,"_113":-5,"_114":-5,"_14":115,"_116":117,"_118":119,"_120":119,"_121":-5,"_122":32,"_16":123,"_124":125,"_126":125,"_127":128,"_129":128,"_130":128,"_131":125,"_132":125,"_23":200,"_136":201,"_139":202,"_151":22},["D",1754476739364],{"_94":95,"_134":135},{"_94":95,"_138":135,"_14":115},{"_101":141,"_96":44,"_105":142,"_143":106,"_144":-5,"_145":-5,"_146":-5,"_147":-5,"_148":-5,"_149":97,"_150":95},[204],{"_105":155,"_96":100,"_156":117,"_157":-5,"_158":142,"_159":102,"_160":22,"_107":161,"_101":162,"_163":164,"_165":166,"_167":22,"_168":97,"_169":205,"_99":206},[],[100],[204],{"_105":155,"_96":100,"_156":117,"_157":-5,"_158":142,"_159":102,"_160":22,"_107":188,"_101":162,"_163":164,"_165":166,"_167":22,"_168":97,"_99":209},[100],[],"upstream","pull","ahead","behind","templates",[],"actionData","errors"]

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earnings