SNOTEL Data Viewer

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\n \n \n\n",[],[83,91],"d86c8220-47cf-11f0-b27b-76b3cceeab13","backend","0e802053-2348-490e-9328-85fc195abd99",3,["D",1749761846319],[104],[98],{"_34":105,"_13":106,"_37":107,"_39":99,"_41":42,"_43":108,"_45":46,"_47":109,"_17":110,"_50":111,"_52":112,"_54":55,"_56":-5,"_72":113,"_18":114},"433e1b72-47d0-11f0-9bc0-76b3cceeab13","index.ts","d86c726c-47cf-11f0-b27b-76b3cceeab13",11,["D",1749762025521],7,"http","import { Hono } from \"https://esm.sh/hono@3.11.7\";\nimport { readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\nimport type { SnotelSite, SnotelData, ApiResponse } from \"../shared/types.ts\";\n\nconst app = new Hono();\n\n// Unwrap Hono errors to see original error details\napp.onError((err, c) => {\n throw err;\n});\n\n// Serve static files\napp.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\napp.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n\n// Main page\napp.get(\"/\", async c => {\n let html = await readFile(\"/frontend/index.html\", import.meta.url);\n return c.html(html);\n});\n\n// API endpoint to get SNOTEL sites\napp.get(\"/api/sites\", async c => {\n try {\n // Use specific Colorado SNOTEL station IDs\n const coStationIds = [\n \"335:CO:SNTL\", \"415:CO:SNTL\", \"505:CO:SNTL\", \"551:CO:SNTL\", \"713:CO:SNTL\",\n \"380:CO:SNTL\", \"465:CO:SNTL\", \"531:CO:SNTL\", \"586:CO:SNTL\", \"739:CO:SNTL\",\n \"322:CO:SNTL\", \"408:CO:SNTL\", \"485:CO:SNTL\", \"569:CO:SNTL\", \"797:CO:SNTL\"\n ];\n \n const response = await fetch(\n `https://wcc.sc.egov.usda.gov/awdbRestApi/services/v1/stations?stationIds=${coStationIds.join(',')}`\n );\n \n if (!response.ok) {\n throw new Error(`API request failed: ${response.status}`);\n }\n \n const data = await response.json();\n \n // Transform the data to our format\n const sites: SnotelSite[] = data.map((station: any) => ({\n stationId: station.stationId,\n name: station.name,\n state: station.state,\n latitude: station.latitude,\n longitude: station.longitude,\n elevation: station.elevation,\n county: station.countyName,\n huc: station.huc\n }));\n \n const apiResponse: ApiResponse = {\n success: true,\n data: sites\n };\n \n return c.json(apiResponse);\n } catch (error) {\n console.error(\"Error fetching sites:\", error);\n const apiResponse: ApiResponse = {\n success: false,\n error: error instanceof Error ? error.message : \"Unknown error\"\n };\n return c.json(apiResponse, 500);\n }\n});\n\n// API endpoint to get latest data for stations\napp.get(\"/api/data\", async c => {\n try {\n // Get current date and 30 days ago for recent data\n const endDate = new Date();\n const startDate = new Date();\n startDate.setDate(startDate.getDate() - 30);\n \n const formatDate = (date: Date) => date.toISOString().split('T')[0];\n \n // Use specific Colorado SNOTEL station IDs\n const coStationIds = [\n \"335:CO:SNTL\", \"415:CO:SNTL\", \"505:CO:SNTL\", \"551:CO:SNTL\", \"713:CO:SNTL\",\n \"380:CO:SNTL\", \"465:CO:SNTL\", \"531:CO:SNTL\", \"586:CO:SNTL\", \"739:CO:SNTL\",\n \"322:CO:SNTL\", \"408:CO:SNTL\", \"485:CO:SNTL\", \"569:CO:SNTL\", \"797:CO:SNTL\"\n ];\n \n // Fetch recent data for these stations\n const dataResponse = await fetch(\n `https://wcc.sc.egov.usda.gov/awdbRestApi/services/v1/data?stationIds=${coStationIds.join(',')}&elementCds=SNWD,WTEQ,TOBS&ordinal=1&duration=DAILY&getFlags=false&alwaysReturnDailyFeb29=false&format=json&beginDate=${formatDate(startDate)}&endDate=${formatDate(endDate)}`\n );\n \n if (!dataResponse.ok) {\n throw new Error(`Data API request failed: ${dataResponse.status}`);\n }\n \n const data = await dataResponse.json();\n \n // Process and group data by station, getting the most recent values\n const stationData: { [key: string]: SnotelData } = {};\n \n data.forEach((record: any) => {\n const stationId = record.stationId;\n \n if (!stationData[stationId]) {\n stationData[stationId] = {\n stationId: stationId,\n name: record.stationName,\n date: record.date,\n snowDepth: undefined,\n snowWaterEquivalent: undefined,\n temperature: undefined,\n precipitation: undefined\n };\n }\n \n // Update with latest date data\n if (record.date >= stationData[stationId].date) {\n stationData[stationId].date = record.date;\n \n // Map element codes to our data structure\n switch (record.elementCd) {\n case 'SNWD':\n stationData[stationId].snowDepth = record.value;\n break;\n case 'WTEQ':\n stationData[stationId].snowWaterEquivalent = record.value;\n break;\n case 'TOBS':\n stationData[stationId].temperature = record.value;\n break;\n case 'PREC':\n stationData[stationId].precipitation = record.value;\n break;\n }\n }\n });\n \n const apiResponse: ApiResponse = {\n success: true,\n data: Object.values(stationData)\n };\n \n return c.json(apiResponse);\n } catch (error) {\n console.error(\"Error fetching data:\", error);\n const apiResponse: ApiResponse = {\n success: false,\n error: error instanceof Error ? error.message : \"Unknown error\"\n };\n return 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