80 lines
2.6 KiB
JavaScript
80 lines
2.6 KiB
JavaScript
const Sequelize = require('sequelize')
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const Op = Sequelize.Op
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const message = require('./alert')
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// Setup database, using credentials set in .env
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const sequelize = new Sequelize('database', process.env.DB_USER, process.env.DB_PASS, {
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dialect: 'sqlite',
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logging: false,
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storage: '.data/database.sqlite'
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})
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// Define 'readings' table structure
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const Readings = sequelize.define('readings', {
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timestamp: {
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type: Sequelize.DATE
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},
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reading: {
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type: Sequelize.INTEGER
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}
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}, {
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hooks: {
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afterCreate: (data, opts) => {
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// Fetch all settings
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Settings.findAll().then((result) => {
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const lowtrigger = parseInt(result.find(o => o.dataValues.key === 'low-trigger').dataValues.value)
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const hightrigger = parseInt(result.find(o => o.dataValues.key === 'high-trigger').dataValues.value)
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const low = result.find(o => o.dataValues.key === 'low').dataValues.value
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const alert = result.find(o => o.dataValues.key === 'low-trigger').dataValues.value
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// Reset low moisture flag if it's set, and the reading is greater than high-trigger
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if (low !== '0' && data.reading >= hightrigger) {
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// Send alert that water was received
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message('gotwater')
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// Update low to false
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Settings.update({ value: false }, { where: { key: 'low' } })
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// Update alert to false
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Settings.update({ value: false }, { where: { key: 'alert' } })
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}
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// Set the low moisture flag if it's not set, and the value is less than low-trigger
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if (low === '0' && data.reading <= lowtrigger) {
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// Update low to true
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Settings.update({ value: new Date().toISOString() }, { where: { key: 'low' } })
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}
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// If the low moisture flag is set but an alert has not yet been sent, determine if an alert is necessarry
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if (low !== '0' && alert === '0') {
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const lowtriggered = new Date().getTime() - new Date(low).getTime()
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const fourdays = 4 * 24 * 60 * 60 * 1000
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// If the first low reading was more than 4 days ago, send an alert
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if (lowtriggered > fourdays) {
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// Send alert that water is needed
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message('wantwater')
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// Flag that an alert has been sent
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Settings.update({ value: new Date().toISOString() }, { where: { key: 'alert' } })
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}
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}
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})
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}
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}
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})
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// Define 'settings' table structure
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const Settings = sequelize.define('settings', {
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key: {
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type: Sequelize.STRING,
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unique: true
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},
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value: {
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type: Sequelize.STRING
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}
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})
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module.exports = {Op, Readings, Settings}
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