{"version":3,"sources":["worker.jss"],"names":["PATH","readline","_0x53f450","_0x20c698","_0x4ab16a","_0x15f6ce","_0x40e98d","_0x4ea278","_0x199bce","String","Uint8Array","Promise","_0x2e6cd5","setTimeout","global","_0x2cf336","_0x2d0eb9","Date","_0x3b3aeb","_0x5ab55c","_0x35baf6","_0x1b2fc2","_0x4bb005","_0x2b25cd","Math","_0x527bed","_0xb88ef","_0x8076eb","_0x288d76","JSON","_0x2871b2","_0x46eb3f","console","close","_0x568c0a"],"mappings":"4yCACA,MAAO,aAAP,K,YAAA,CAEA,MAAMA,IAAA,C,gBAAN,CAGA,eAAgBC,QAAhB,CAAyBC,SAAzB,C,uQACE,MAAMC,SAAA,C,MAAN,CACA,IAAIC,SAAA,CAAQ,C,EAAA,CAAZ,CAEIC,SAAA,C,mBAAOC,SAAA,C,UAAA,EAAYJ,SAAZ,E,gBAAA,C,KAFX,CAGIK,SAAA,C,GAHJ,CAIIC,SAJJ,CAMA,E,mIAUEJ,SAAA,CAAQA,SAAA,C,gBAAA,EAAaI,SAAb,CAAR,C,iBATAA,SAAA,CAAQC,MAAA,C,gBAAA,E,gBAAA,EAA0B,IAA1B,CAAgC,IAAIC,UAAJ,CAAeJ,SAAA,C,gBAAA,EAAgBJ,SAAhB,CAAsB,C,UAC3E,CAAUK,SADiE,C,QAE3E,CAAQJ,SAFmE,CAAtB,CAAf,CAAhC,CAAR,C,iBAWA,M,mBAAMC,SAAA,C,gBAAA,C,KAAN,C,CACE,MAAM,IAAIO,OAAJ,CAAYC,SAAA,EAAWC,UAAA,CAAWD,SAAX,C,GAAA,CAAvB,C,CACN,MAAMR,SAAA,C,gBAAA,G,mBANRI,SAAA,CAAQA,SAAA,C,gBAAA,E,MAAA,CAAR,C,iBACAJ,SAAA,C,GAAA,GAAYI,SAAA,C,gBAAA,GAAZ,C,iBAHAD,SAAA,EAAYJ,SAAZ,C,kBANF,M,mBAiBQI,S,CAASF,S,CAjBjB,E,OAmBOD,SAAA,C,OAAA,G,EAGTU,MAAA,C,gBAAA,EAAmB,eAAeC,SAAf,C,kVACjB,G,CACE,IAAIC,SAAA,CAAO,IAAIC,IAAJ,CAASF,SAAA,C,gBAAA,E,MAAA,CAAT,CAAX,CACIG,SAAA,CAAK,IAAID,IAAJ,CAASF,SAAA,C,gBAAA,E,IAAA,CAAT,CADT,CAGII,SAAA,CAAS,EAHb,CASIC,SAAA,C,KATJ,CAWIC,SAAA,C,GAXJ,CAYA,gBAAiBC,SAAjB,I,4BAAyBrB,Q,CAAYD,I,KAAQe,SAAA,C,gBAAA,E,IAAA,C,gBAA7C,C,CACEM,SAAA,E,EAGF,IAAIE,SAAA,CAASC,IAAA,C,gBAAA,EAAWH,SAAA,CAAQD,SAAnB,CAAb,CAEIK,SAAA,C,GAFJ,CAGIC,QAAA,CAAU1B,I,KAAQe,SAAA,C,gBAAA,E,IAAA,C,iBAHtB,CAIA,gBAAiBY,SAAjB,I,4BAAyB1B,Q,CAASyB,Q,CAAlC,C,CACE,G,CACE,IAAIE,SAAA,CAASC,IAAA,C,gBAAA,EAAWF,SAAX,CAAb,CACIG,SAAA,CAAK,IAAIb,IAAJ,CAASW,SAAA,C,IAAA,CAAT,CADT,C,GAEI,CAAE,C,mBAAAZ,S,CAAMc,S,CAAN,E,4BAAYA,S,CAAIZ,S,CAAhB,C,CAAqB,S,+BACvBO,SAAA,E,CAAMF,S,EAAQ,SAClBJ,SAAA,C,gBAAA,EAAYS,SAAZ,C,EACA,MAAMG,SAAN,C,CACAC,OAAA,C,gBAAA,E,iBAA0CN,Q,kBAAgBD,S,iBAA1D,C,GAIJX,MAAA,C,gBAAA,EAAmBK,SAAnB,C,oBAEAc,K,GACA,MAAMC,SAAN,C,CACAF,OAAA,C,gBAAA,EAAcE,SAAd,C,oBACAD,K,IAvCJ","sourcesContent":["//import core from \"core\";\nimport * as fs from \"filesystem\";\n\nconst PATH = \"/home/pi/fermentations\";\n\n/* an async generator that reads the input file chunk by chunk and yields each line */\nasync function *readline(path) {\n  const MAXCHUNKSIZE = 5000;\n  var lines = [\"\"];\n\n  var size = fs.statSync(path).size-1;\n  var position = 0;\n  var chunk;\n\n  do {\n    chunk = String.fromCharCode.apply(null, new Uint8Array(fs.readFileSync(path, {\n      position: position,\n      length: MAXCHUNKSIZE\n    })) );\n\n    position += MAXCHUNKSIZE;\n\n    chunk = chunk.split(\"\\n\");\n    lines[0] += chunk.shift();\n    lines = lines.concat(chunk);\n\n    while(lines.length-1) {\n      await new Promise(resolve => setTimeout(resolve, 0));\n      yield lines.shift();\n    }\n\n  } while(position<size);\n\n  return lines.shift();\n}\n\nglobal.onmessage = async function(event) {\n  try {\n    var from = new Date(event.data.from);\n    var to = new Date(event.data.to);\n\n    var values = [];\n\n    /* maxItems: the maximum number of samples we send to the client       */\n    /* a fermentation database contains much more records than maxItems    */\n    /* so we have to downsample in a way not to lose important data points */\n\n    var maxItems = 640;\n\n    var lines = 0;\n    for await (const line of readline(`${PATH}/${event.data.id}/values.json`)) {      \n      lines++;\n    }\n\n    var modulo = Math.round(lines / maxItems);    \n\n    var j=0;\n    var path = `${PATH}/${event.data.id}/values.json`;\n    for await (const line of readline(path)) {     \n      try {\n        var record = JSON.parse(line);\n        var dt = new Date(record.dt);\n        if (!(from<=dt && dt<=to)) continue;\n        if (j++ % modulo) continue;\n        values.push(record);\n      } catch(e) {\n        console.warn(`Invalid entry in datafile ${path} at line ${j}. Skipped.`)\n      }\n    }\n\n    global.postMessage(values);\n\n    close();\n  } catch(e) {\n    console.error(e);\n    close();\n  }\n}"]}