'use strict';

const fs = require('fs');

const path = require('path');

const NUDGES_PATH = path.join(__dirname, 'data', 'nudges.json');

const BUILT_IN = {

sunrise_reminder: [

'Sunrise is in {minutes} minutes. A quiet moment outside is waiting.',

'The morning light arrives in {minutes} minutes. No pressure—just an invitation.',

'In {minutes} minutes, the sky will begin to brighten. Step out if it feels good.',

],

sunset_reminder: [

'Sunset is in {minutes} minutes. You might enjoy a little fresh air outside.',

'The evening light arrives in {minutes} minutes. Take a gentle pause if you can.',

'In {minutes} minutes, the sky will soften. A balcony moment is yours if you want it.',

],

treat_ideas: [

'Take a warm chai outside.',

'Bring a coffee and sit for a few quiet minutes.',

'Pack a small snack to enjoy in the open air.',

],

done_messages: [

'Lovely—you made space for yourself today. Streak: {streak}.',

'That was a good little pause. You’re on a {streak}-day streak.',

'Nice work showing up for the sky. Streak: {streak}.',

],

};

function loadNudges() {

try {

const parsed = JSON.parse(fs.readFileSync(NUDGES_PATH, 'utf8'));

return { ...BUILT_IN, ...parsed };

} catch {

return BUILT_IN;

}

}

function randomLine(category, values = {}) {

const lines = loadNudges()[category] || BUILT_IN[category] || [];

const line = lines[Math.floor(Math.random() * lines.length)] || '';

return line.replace(/\{(minutes|streak)\}/g, (_, key) => String(values[key] ?? `{${key}}`));

}

module.exports = { randomLine, loadNudges, NUDGES_PATH };