---

2026-06-24 16:52:08 +02:00
commit 5abeb4fd48
53 changed files with 276551 additions and 0 deletions
@@ -0,0 +1 @@
+NEXT_PUBLIC_BACKEND_ORIGIN=
@@ -0,0 +1,36 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+.yarn/install-state.gz
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
@@ -0,0 +1 @@
+## This is the Next.js frontend for our Data Science project.  
@@ -0,0 +1,23 @@
+import type { Metadata } from 'next'
+import { Providers } from './providers'
+import { Flex } from '@chakra-ui/react'
+
+export const metadata: Metadata = {
+  title: 'HSL Bike Helper',
+  description: 'An app that makes prediction based on Open Data from the Helsinki Bike System.',
+}
+
+const RootLayout = ({ children, }: Readonly<{ children: React.ReactNode }>) => {
+  return (
+    <html lang='en'>
+      <body>
+        <Providers>
+          <Flex justifyContent='center' width='100%' padding={4} minH='calc(100vh - 72px)'>
+            {children}
+          </Flex>
+        </Providers>
+      </body>
+    </html>
+  )
+}
+export default RootLayout
@@ -0,0 +1,26 @@
+import type { MetadataRoute } from 'next'
+
+const manifest = (): MetadataRoute.Manifest => {
+  return {
+    name: 'HSL Bike Helper',
+    short_name: 'HSL',
+    description: 'An app that makes prediction based on Open Data from the Helsinki Bike System.',
+    start_url: '/',
+    display: 'standalone',
+    background_color: '#ffffff',
+    theme_color: '#000000',
+    icons: [
+      {
+        src: '/icon-192x192.png',
+        sizes: '192x192',
+        type: 'image/png',
+      },
+      {
+        src: '/icon-512x512.png',
+        sizes: '512x512',
+        type: 'image/png',
+      },
+    ],
+  }
+}
+export default manifest
@@ -0,0 +1,78 @@
+'use client'
+
+import { InputField, Wrapper } from '@/components'
+import { Box, Button, Flex, FormLabel, Select, Text } from '@chakra-ui/react'
+import { Field, Form, Formik } from 'formik'
+import { useState } from 'react'
+
+interface Response {
+  timestamp: string
+  station: string
+  departingCount: number
+  returningCount: number
+  bikeAtStationCount: number
+  increasing: boolean
+}
+
+const Home: React.FC = () => {
+  const [predictionData, setPredictionData] = useState<Response>()
+
+  return (
+    <Box w='100%'>
+      <Wrapper>
+        <Formik
+          initialValues={{ station: 'Kamppi (M)', timestamp: '' }}
+          onSubmit={async ({ station, timestamp }, { setErrors }) => {
+            const response: Response = await (await fetch(`${process.env.NEXT_PUBLIC_BACKEND_ORIGIN}/app/predict?timestamp=${timestamp}&station=${station}`)).json()
+            setPredictionData(response)
+          }}
+        >
+          {({ isSubmitting, values }) => (
+            <Form>
+              <Flex flexDir='column' alignItems='center' mt={4}>
+                <Field name='station'>
+                  {/* @ts-ignore */}
+                  {({ field }) => (
+                    <>
+                      <FormLabel htmlFor='station'>Station</FormLabel>
+                      <Select id='station' placeholder='' textAlign='center' {...field} >
+                        <option value='Kamppi (M)'>Kamppi (M)</option>
+                        <option value='Rautatientori - itä'>Rautatientori - itä</option>
+                      </Select>
+                    </>
+                  )}
+                </Field>
+
+                <FormLabel htmlFor='timestamp' mt={4} mb={0}>Timestamp</FormLabel>
+                <InputField name='timestamp' label='' placeholder='YYYY-MM-DD HH:MM:SS' textAlign='center' />
+
+                <Button type='submit' mt={4} disabled={isSubmitting} isLoading={isSubmitting}>Predict</Button>
+                {
+                  predictionData &&
+                  <Box mt={4}>
+                    <Text>Timestamp: {predictionData.timestamp}</Text>
+                    <Text>Station: {predictionData.station}</Text>
+                    <Text>Predicted Number of Bikes Arriving at Station: {predictionData.returningCount}</Text>
+                    <Text>Predicted Number of Bikes Departing from Station: {predictionData.departingCount}</Text>
+                    <Text>Predicted Number of Bikes at Station: {predictionData.bikeAtStationCount}</Text>
+                    <Text>Predicted Bike Count Status: {predictionData.increasing ? 'Decreasing' : 'Increasing'}</Text>
+                    <Text>
+                      In need of more bikes: &nbsp;
+                      {
+                        predictionData.bikeAtStationCount > 10 ? 'No' :
+                          predictionData.bikeAtStationCount > 5 ? 'Yes, but not urgently.' :
+                            'Yes, urgently.'
+                      }
+                    </Text>
+                  </Box>
+                }
+
+              </Flex>
+            </Form>
+          )}
+        </Formik>
+      </Wrapper>
+    </Box>
+  )
+}
+export default Home
@@ -0,0 +1,9 @@
+'use client'
+
+import { ChakraProvider } from '@chakra-ui/react'
+
+export const Providers = ({ children }: { children: React.ReactNode }) => {
+  return (
+    <ChakraProvider>{children}</ChakraProvider>
+  )
+}
@@ -0,0 +1,18 @@
+'use client'
+import { FormControl, FormErrorMessage, FormLabel, Input, InputProps } from '@chakra-ui/react'
+import { useField } from 'formik'
+
+type Props = React.InputHTMLAttributes<HTMLInputElement> & { name: string, label: string, isTextArea?: boolean } & InputProps
+
+export const InputField: React.FC<Props> = ({size: _, isTextArea=false, ...props}) => {
+  const [field, { error }] = useField(props)
+  const { label, placeholder } = props
+
+  return (
+    <FormControl isInvalid={!!error}>
+      <FormLabel htmlFor={field.name}>{label}</FormLabel>
+      <Input {...field} {...props} id={field.name} placeholder={placeholder} />
+      {error ? <FormErrorMessage>{error}</FormErrorMessage> : null}
+    </FormControl>
+  )
+}
@@ -0,0 +1,36 @@
+'use client'
+import { FormControl, FormErrorMessage, FormLabel, Textarea, TextareaProps } from '@chakra-ui/react'
+import autosize from 'autosize'
+import { useField } from 'formik'
+import { useRef, useEffect } from 'react'
+
+type Props = React.TextareaHTMLAttributes<HTMLTextAreaElement> & { name: string, label: string } & TextareaProps
+
+export const TextareaField: React.FC<Props> = (props): JSX.Element => {
+  const [field, { error }] = useField(props)
+  const { label, placeholder } = props
+
+  // https://github.com/chakra-ui/chakra-ui/issues/670
+  const ref: any = useRef()
+  useEffect(() => {
+    const current = ref.current
+    autosize(current)
+    return () => {
+      autosize.destroy(current)
+    }
+  }, [])
+
+  return (
+    <FormControl isInvalid={!!error}>
+      <FormLabel htmlFor={field.name}>{label}</FormLabel>
+      <Textarea
+        {...field}
+        {...props}
+        ref={ref}
+        id={field.name}
+        placeholder={placeholder}
+      />
+      {error ? <FormErrorMessage>{error}</FormErrorMessage> : null}
+    </FormControl>
+  )
+}
@@ -0,0 +1,75 @@
+'use client'
+// ChatGPT-generated
+import { Line } from 'react-chartjs-2'
+import { Chart as ChartJS, TimeScale, LinearScale, PointElement, LineElement, Tooltip, Legend } from 'chart.js'
+import 'chartjs-adapter-date-fns'
+import { Entry } from '@/constants'
+
+// Register required chart components
+ChartJS.register(TimeScale, LinearScale, PointElement, LineElement, Tooltip, Legend)
+
+export const TripCountChart = ({ data }: { data: Entry[] }) => {
+  const chartData = {
+    labels: data.map((entry) => entry.time),
+    datasets: [
+      {
+        label: 'Trip Count',
+        data: data.map((entry) => entry.trip_count),
+        fill: false,
+        borderColor: 'rgba(75,192,192,1)',
+        tension: 0.1,
+        segment: {
+          borderColor: (ctx: any) => {
+            const dataIndex = ctx.p0DataIndex // Starting index of the segment
+            const totalPoints = data.length
+            const threeQuarterIndex = Math.floor(totalPoints * 0.75)
+
+            // Use a different color after 3/4 of the x-axis
+            return dataIndex >= threeQuarterIndex
+              ? 'rgba(255,99,132,1)' // Different color after 3/4
+              : 'rgba(75,192,192,1)' // Default color for the first 3/4
+          },
+        },
+      },
+    ],
+  }
+
+  const options = {
+    scales: {
+      x: {
+        type: 'time',
+        time: {
+          unit: 'hour',
+          tooltipFormat: 'PPpp',
+          displayFormats: {
+            hour: 'MMM d, yyyy HH:mm',
+          },
+        },
+        title: {
+          display: true,
+          text: 'Time (Hour)',
+        },
+      },
+      y: {
+        beginAtZero: true,
+        title: {
+          display: true,
+          text: 'Trip Count',
+        },
+      },
+    },
+    plugins: {
+      tooltip: {
+        callbacks: {
+          label: function (context: any) {
+            return `Trip Count: ${context.raw}`
+          },
+        },
+      },
+    },
+  }
+
+  return <Line data={chartData} options={options as any} />
+}
+
+export default TripCountChart
@@ -0,0 +1,14 @@
+import { Box } from '@chakra-ui/react'
+
+interface Props {
+  children?: React.ReactNode
+  variant?: 'small' | 'regular'
+}
+
+export const Wrapper: React.FC<Props> = ({ children, variant = 'regular' }) => {
+  return (
+    <Box w='100%' maxW={variant == 'small' ? 400 : 800} mt={8} mx='auto'>
+      {children}
+    </Box>
+  )
+}
@@ -0,0 +1,4 @@
+export * from './Wrapper'
+export * from './TripCountChart'
+export * from './InputField'
+export * from './TextareaField'
@@ -0,0 +1 @@
+export * from './sampleTripCountData'
@@ -0,0 +1,9 @@
+declare global {
+  namespace NodeJS {
+    interface ProcessEnv {
+      NEXT_PUBLIC_BACKEND_ORIGIN: string;
+    }
+  }
+}
+
+export {}
@@ -0,0 +1,4 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {}
+
+export default nextConfig
@@ -0,0 +1,36 @@
+{
+  "name": "hsl-frontend",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "env:generate": "gen-env-types .env -o env.d.ts -e .",
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint"
+  },
+  "dependencies": {
+    "@chakra-ui/next-js": "^2.2.0",
+    "@chakra-ui/react": "^2.8.2",
+    "@emotion/react": "^11.13.3",
+    "@emotion/styled": "^11.13.0",
+    "autosize": "^6.0.1",
+    "chart.js": "^4.4.4",
+    "chartjs-adapter-date-fns": "^3.0.0",
+    "date-fns": "^4.1.0",
+    "formik": "^2.4.6",
+    "framer-motion": "^11.5.4",
+    "next": "14.2.9",
+    "react": "^18",
+    "react-chartjs-2": "^5.2.0",
+    "react-dom": "^18"
+  },
+  "devDependencies": {
+    "@types/autosize": "^4.0.3",
+    "@types/node": "^20",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
+    "gen-env-types": "^1.3.4",
+    "typescript": "^5"
+  }
+}
@@ -0,0 +1,39 @@
+{
+  "compilerOptions": {
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": [
+        "./*"
+      ]
+    }
+  },
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    ".next/types/**/*.ts"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}
				`@@ -0,0 +1 @@`
				`## This is the Next.js frontend for our Data Science project.`