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pdf generation

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lumijiez
2025-05-21 21:55:52 +03:00
parent a4f1b461af
commit 059a867493
5 changed files with 1219 additions and 20 deletions
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src/app/api/export-report/route.js Normal file
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import { NextResponse } from 'next/server'
import { connectToDatabase } from '@/lib/mongodb'
import { PDFDocument, rgb, StandardFonts } from 'pdf-lib'
import QuickChart from 'quickchart-js'
function calculateStatistics(data) {
const stats = {
battery: {
avgCapacity: 0,
minCapacity: Infinity,
maxCapacity: 0,
avgVoltage: 0,
chargingTime: 0,
totalChargingTime: 0
},
power: {
avgPvInput: 0,
maxPvInput: 0,
totalPvEnergy: 0,
avgAcOutput: 0,
maxAcOutput: 0,
totalAcEnergy: 0
},
temperature: {
avgTemp: 0,
maxTemp: 0,
minTemp: Infinity
}
}
let lastTimestamp = null
let isCharging = false
let chargingStart = null
data.forEach((item, index) => {
const currentData = item.data
const timestamp = new Date(item.timestamp.$date || item.timestamp)
// Battery statistics
stats.battery.avgCapacity += currentData.battery_capacity
stats.battery.minCapacity = Math.min(stats.battery.minCapacity, currentData.battery_capacity)
stats.battery.maxCapacity = Math.max(stats.battery.maxCapacity, currentData.battery_capacity)
stats.battery.avgVoltage += currentData.battery_voltage
// Power statistics
stats.power.avgPvInput += currentData.pv_input_power
stats.power.maxPvInput = Math.max(stats.power.maxPvInput, currentData.pv_input_power)
stats.power.avgAcOutput += currentData.ac_output_active_power
stats.power.maxAcOutput = Math.max(stats.power.maxAcOutput, currentData.ac_output_active_power)
// Temperature statistics
stats.temperature.avgTemp += currentData.inverter_heat_sink_temperature
stats.temperature.maxTemp = Math.max(stats.temperature.maxTemp, currentData.inverter_heat_sink_temperature)
stats.temperature.minTemp = Math.min(stats.temperature.minTemp, currentData.inverter_heat_sink_temperature)
// Calculate energy (power * time)
if (lastTimestamp) {
const timeDiff = (timestamp - lastTimestamp) / (1000 * 60 * 60) // hours
stats.power.totalPvEnergy += (currentData.pv_input_power * timeDiff)
stats.power.totalAcEnergy += (currentData.ac_output_active_power * timeDiff)
}
// Calculate charging time
if (currentData.battery_charging_current > 0) {
if (!isCharging) {
chargingStart = timestamp
isCharging = true
}
} else {
if (isCharging && chargingStart) {
stats.battery.chargingTime += (timestamp - chargingStart) / (1000 * 60) // minutes
isCharging = false
chargingStart = null
}
}
lastTimestamp = timestamp
})
// Calculate averages
const count = data.length
stats.battery.avgCapacity /= count
stats.battery.avgVoltage /= count
stats.power.avgPvInput /= count
stats.power.avgAcOutput /= count
stats.temperature.avgTemp /= count
return stats
}
async function generateCharts(data) {
const timestamps = data.map(item => new Date(item.timestamp.$date || item.timestamp).toLocaleTimeString())
// Battery Capacity Chart
const batteryCapacityChart = new QuickChart()
batteryCapacityChart.setWidth(800)
batteryCapacityChart.setHeight(400)
batteryCapacityChart.setConfig({
type: 'line',
data: {
labels: timestamps,
datasets: [{
label: 'Battery Capacity (%)',
data: data.map(item => item.data.battery_capacity),
borderColor: '#1E40AF',
backgroundColor: 'rgba(30, 64, 175, 0.1)',
fill: true,
tension: 0.4
}]
},
options: {
plugins: {
title: {
display: true,
text: 'Battery Capacity Over Time',
font: { size: 16 }
}
},
scales: {
y: {
beginAtZero: true,
max: 100
}
}
}
})
// Power Chart
const powerChart = new QuickChart()
powerChart.setWidth(800)
powerChart.setHeight(400)
powerChart.setConfig({
type: 'line',
data: {
labels: timestamps,
datasets: [
{
label: 'PV Input Power (W)',
data: data.map(item => item.data.pv_input_power),
borderColor: '#059669',
backgroundColor: 'rgba(5, 150, 105, 0.1)',
fill: true,
tension: 0.4
},
{
label: 'AC Output Power (W)',
data: data.map(item => item.data.ac_output_active_power),
borderColor: '#DC2626',
backgroundColor: 'rgba(220, 38, 38, 0.1)',
fill: true,
tension: 0.4
}
]
},
options: {
plugins: {
title: {
display: true,
text: 'Power Generation and Consumption',
font: { size: 16 }
}
}
}
})
// Temperature Chart
const temperatureChart = new QuickChart()
temperatureChart.setWidth(800)
temperatureChart.setHeight(400)
temperatureChart.setConfig({
type: 'line',
data: {
labels: timestamps,
datasets: [{
label: 'Inverter Temperature (°C)',
data: data.map(item => item.data.inverter_heat_sink_temperature),
borderColor: '#D97706',
backgroundColor: 'rgba(217, 119, 6, 0.1)',
fill: true,
tension: 0.4
}]
},
options: {
plugins: {
title: {
display: true,
text: 'Inverter Temperature Over Time',
font: { size: 16 }
}
}
}
})
// Generate chart images
const batteryCapacityUrl = batteryCapacityChart.getUrl()
const powerUrl = powerChart.getUrl()
const temperatureUrl = temperatureChart.getUrl()
// Fetch chart images
const batteryCapacityResponse = await fetch(batteryCapacityUrl)
const powerResponse = await fetch(powerUrl)
const temperatureResponse = await fetch(temperatureUrl)
const batteryCapacityBuffer = Buffer.from(await batteryCapacityResponse.arrayBuffer())
const powerBuffer = Buffer.from(await powerResponse.arrayBuffer())
const temperatureBuffer = Buffer.from(await temperatureResponse.arrayBuffer())
return {
batteryCapacityImage: batteryCapacityBuffer,
powerImage: powerBuffer,
temperatureImage: temperatureBuffer
}
}
async function generatePDF(stats, timeRange, data) {
// Create a new PDF document
const pdfDoc = await PDFDocument.create()
// Embed the standard font
const font = await pdfDoc.embedFont(StandardFonts.Helvetica)
const boldFont = await pdfDoc.embedFont(StandardFonts.HelveticaBold)
// Add pages
const page1 = pdfDoc.addPage([595.28, 841.89]) // A4 size
const page2 = pdfDoc.addPage([595.28, 841.89])
const page3 = pdfDoc.addPage([595.28, 841.89])
const { width, height } = page1.getSize()
// Common text properties
const titleFontSize = 24
const headerFontSize = 18
const textFontSize = 12
const footerFontSize = 10
const margin = 50
const lineHeight = 20
// Function to draw header on each page
const drawHeader = (page, title) => {
// Draw background gradient
page.drawRectangle({
x: 0,
y: 0,
width,
height,
color: rgb(0.95, 0.95, 0.95)
})
// Draw title
page.drawText(title, {
x: width / 2 - 100,
y: height - 50,
size: titleFontSize,
font: boldFont,
color: rgb(0.12, 0.25, 0.67) // #1E40AF
})
// Draw time period
page.drawText(`Time Period: ${timeRange.charAt(0).toUpperCase() + timeRange.slice(1)}`, {
x: width / 2 - 80,
y: height - 80,
size: textFontSize,
font,
color: rgb(0.29, 0.34, 0.39) // #4B5563
})
}
// Function to draw footer on each page
const drawFooter = (page) => {
page.drawText(`Generated on ${new Date().toLocaleString()}`, {
x: width / 2 - 100,
y: 50,
size: footerFontSize,
font,
color: rgb(0.42, 0.45, 0.5) // #6B7280
})
}
// Page 1: Overview and Battery Statistics
drawHeader(page1, 'UTM Solar Panel Report')
// Draw battery capacity chart
const charts = await generateCharts(data)
const batteryCapacityPdfImage = await pdfDoc.embedPng(charts.batteryCapacityImage)
page1.drawImage(batteryCapacityPdfImage, {
x: margin,
y: height - 400,
width: width - (2 * margin),
height: 300
})
// Draw battery statistics
const batteryStats = [
`Average Battery Capacity: ${stats.battery.avgCapacity.toFixed(1)}%`,
`Minimum Battery Capacity: ${stats.battery.minCapacity.toFixed(1)}%`,
`Maximum Battery Capacity: ${stats.battery.maxCapacity.toFixed(1)}%`,
`Average Battery Voltage: ${stats.battery.avgVoltage.toFixed(1)}V`,
`Total Charging Time: ${(stats.battery.chargingTime / 60).toFixed(1)} hours`
]
page1.drawText('Battery Statistics', {
x: margin,
y: height - 450,
size: headerFontSize,
font: boldFont,
color: rgb(0.12, 0.25, 0.67)
})
batteryStats.forEach((text, index) => {
page1.drawText(text, {
x: margin,
y: height - 500 - (index * lineHeight),
size: textFontSize,
font,
color: rgb(0.29, 0.34, 0.39)
})
})
drawFooter(page1)
// Page 2: Power Generation and Consumption
drawHeader(page2, 'Power Analysis')
// Draw power chart
const powerPdfImage = await pdfDoc.embedPng(charts.powerImage)
page2.drawImage(powerPdfImage, {
x: margin,
y: height - 400,
width: width - (2 * margin),
height: 300
})
// Draw power statistics
const powerStats = [
`Average PV Input Power: ${stats.power.avgPvInput.toFixed(1)}W`,
`Maximum PV Input Power: ${stats.power.maxPvInput.toFixed(1)}W`,
`Total PV Energy Generated: ${stats.power.totalPvEnergy.toFixed(1)}Wh`,
`Average AC Output Power: ${stats.power.avgAcOutput.toFixed(1)}W`,
`Maximum AC Output Power: ${stats.power.maxAcOutput.toFixed(1)}W`,
`Total AC Energy Consumed: ${stats.power.totalAcEnergy.toFixed(1)}Wh`
]
page2.drawText('Power Statistics', {
x: margin,
y: height - 450,
size: headerFontSize,
font: boldFont,
color: rgb(0.12, 0.25, 0.67)
})
powerStats.forEach((text, index) => {
page2.drawText(text, {
x: margin,
y: height - 500 - (index * lineHeight),
size: textFontSize,
font,
color: rgb(0.29, 0.34, 0.39)
})
})
drawFooter(page2)
// Page 3: Temperature and System Health
drawHeader(page3, 'System Health')
// Draw temperature chart
const temperaturePdfImage = await pdfDoc.embedPng(charts.temperatureImage)
page3.drawImage(temperaturePdfImage, {
x: margin,
y: height - 400,
width: width - (2 * margin),
height: 300
})
// Draw temperature statistics
const tempStats = [
`Average Inverter Temperature: ${stats.temperature.avgTemp.toFixed(1)}°C`,
`Maximum Inverter Temperature: ${stats.temperature.maxTemp.toFixed(1)}°C`,
`Minimum Inverter Temperature: ${stats.temperature.minTemp.toFixed(1)}°C`
]
page3.drawText('Temperature Statistics', {
x: margin,
y: height - 450,
size: headerFontSize,
font: boldFont,
color: rgb(0.12, 0.25, 0.67)
})
tempStats.forEach((text, index) => {
page3.drawText(text, {
x: margin,
y: height - 500 - (index * lineHeight),
size: textFontSize,
font,
color: rgb(0.29, 0.34, 0.39)
})
})
// Draw system health summary
const healthSummary = [
'System Health Summary:',
`• Battery Health: ${stats.battery.avgCapacity > 80 ? 'Excellent' : stats.battery.avgCapacity > 60 ? 'Good' : 'Needs Attention'}`,
`• Power Generation: ${stats.power.totalPvEnergy > 1000 ? 'High' : stats.power.totalPvEnergy > 500 ? 'Moderate' : 'Low'}`,
`• Temperature Status: ${stats.temperature.avgTemp < 40 ? 'Normal' : stats.temperature.avgTemp < 50 ? 'Warning' : 'Critical'}`
]
page3.drawText('System Health Summary', {
x: margin,
y: height - 600,
size: headerFontSize,
font: boldFont,
color: rgb(0.12, 0.25, 0.67)
})
healthSummary.forEach((text, index) => {
page3.drawText(text, {
x: margin,
y: height - 650 - (index * lineHeight),
size: textFontSize,
font,
color: rgb(0.29, 0.34, 0.39)
})
})
drawFooter(page3)
// Save the PDF
return await pdfDoc.save()
}
export async function GET(request) {
const { searchParams } = new URL(request.url)
const timeRange = searchParams.get('timeRange') || 'today'
try {
const { db } = await connectToDatabase()
const collection = db.collection('solar_data')
const now = new Date()
let startDate = new Date()
let endDate = new Date()
switch (timeRange) {
case 'today':
startDate.setHours(0, 0, 0, 0)
endDate = now
break
case 'week':
startDate.setDate(now.getDate() - 7)
startDate.setHours(0, 0, 0, 0)
endDate = now
break
case 'month':
startDate.setMonth(now.getMonth() - 1)
startDate.setHours(0, 0, 0, 0)
endDate = now
break
default:
startDate.setHours(0, 0, 0, 0)
endDate = now
}
const data = await collection.find({
timestamp: {
$gte: startDate,
$lte: endDate
}
}).sort({ timestamp: 1 }).toArray()
const stats = calculateStatistics(data)
const pdfBytes = await generatePDF(stats, timeRange, data)
return new NextResponse(pdfBytes, {
headers: {
'Content-Type': 'application/pdf',
'Content-Disposition': `attachment; filename=solar-report-${timeRange}.pdf`
}
})
} catch (error) {
console.error('Error generating report:', error)
return NextResponse.json({ error: 'Failed to generate report' }, { status: 500 })
}
}