Bitcoin Scheduled Price Notifier

index.js

const alerts = require('apialerts-js')
const { CronJob } = require("cron");

// Your Project API Key
const apiAlertsKey = 'YOUR PROJECT API KEY'

// Cron job to notify Bitcoin price every day at 10am
new CronJob('0 10 * * *', notifyBitcoinPrice, null, true, 'Australia/Melbourne')

// Fetch the bitcoin price from the public Coinbase API
async function notifyBitcoinPrice() {
    try {
        // Fetch the Bitcoin price
        const response = await fetch('https://api.coinbase.com/v2/exchange-rates?currency=USD')
        if (response.status !== 200) {
            return // HTTP Error
        }
        const body = await response.json()

        // Get the BTC price
        const btc = body.data.rates.BTC
        if (!btc) {
            return // Bitcoin price not found
        }

        // Calculate the price
        let price = 1 / parseFloat(btc)

        // Format the price as currency string
        let formatted = price.toLocaleString('en-US', { style: 'currency', currency: 'USD' })
        console.log(`Bitcoin price: ${formatted}`)

        // Send notification to your device via API Alerts
        alerts.send({
            message: `BTC now ${formatted}`,
            tags: ['crypto', 'bitcoin'],
            link: 'https://coinbase.com',
            api_key: apiAlertsKey
        })
    } catch (error) {
        console.error(`Error fetching Bitcoin price: ${error}`);
    }
}