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5b7f9b4 c3c7877 5b7f9b4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | const User = require('../models/User');
const SkillEvent = require('../models/SkillEvent');
/**
* Returns a human-readable relative time string for a given ISO date string.
* e.g. "2 weeks ago", "1 month ago"
*/
function relativeTime(isoString) {
const now = Date.now();
const then = new Date(isoString).getTime();
const diffMs = now - then;
const diffDays = Math.floor(diffMs / (1000 * 60 * 60 * 24));
if (diffDays < 1) return 'today';
if (diffDays === 1) return '1 day ago';
if (diffDays < 7) return `${diffDays} days ago`;
if (diffDays < 14) return '1 week ago';
if (diffDays < 30) return `${Math.floor(diffDays / 7)} weeks ago`;
if (diffDays < 60) return '1 month ago';
return `${Math.floor(diffDays / 30)} months ago`;
}
const userProfileManager = {
/**
* Looks up a user by ID. If not found, creates a new user with that ID and returns it.
* @param {string} id
* @returns {object} user record
*/
getOrCreateUser(id) {
if (!id) throw new Error('id is required');
const existing = User.findById(id);
if (existing) return existing;
return User.create({ id });
},
/**
* Updates allowed profile fields for a user.
* Allowed fields: name, os_type, vocabulary_level, comfort_level, accessibility_needs, onboarded
* @param {string} id
* @param {object} fields
* @returns {object} updated user record
*/
updateProfile(id, fields) {
const allowed = ['name', 'os_type', 'vocabulary_level', 'comfort_level', 'accessibility_needs', 'onboarded'];
const filtered = {};
for (const key of allowed) {
if (fields[key] !== undefined) {
filtered[key] = fields[key];
}
}
return User.update(id, filtered);
},
/**
* Returns a formatted string for injecting into Claude's system prompt,
* including user profile data and skill history.
* @param {string} id
* @returns {string} formatted profile string
*/
getProfileForPrompt(id) {
const user = User.findById(id);
if (!user) return 'User: unknown (no profile found)';
const skillEvents = SkillEvent.findByUserId(id);
// Build name/age line
const namePart = user.name || 'Unknown';
const nameLine = `User: ${namePart}`;
// Device line
const deviceLine = `Device: ${user.os_type || 'unknown'}`;
// Vocabulary level
const vocabLine = `Vocabulary level: ${user.vocabulary_level || 'basic'}`;
// Comfort level
const comfortLine = `Comfort level: ${user.comfort_level !== null && user.comfort_level !== undefined ? user.comfort_level : 1}/5`;
// Skills completed — deduplicate by skill_name, keep most recent
const skillMap = {};
for (const event of skillEvents) {
if (event.status === 'completed') {
if (!skillMap[event.skill_name] || event.practiced_at > skillMap[event.skill_name].practiced_at) {
skillMap[event.skill_name] = event;
}
}
}
const skillList = Object.values(skillMap);
let skillsLine;
if (skillList.length === 0) {
skillsLine = 'Skills completed: none yet';
} else {
const formatted = skillList.map(e => `${e.skill_name} (${relativeTime(e.practiced_at)})`).join(', ');
skillsLine = `Skills completed: [${formatted}]`;
}
// Accessibility needs
let accessibilityNeeds = [];
try {
accessibilityNeeds = JSON.parse(user.accessibility_needs || '[]');
} catch (_) {
accessibilityNeeds = [];
}
const accessibilityLine = `Accessibility: ${accessibilityNeeds.length > 0 ? accessibilityNeeds.join(', ') : 'none specified'}`;
return [nameLine, deviceLine, vocabLine, comfortLine, skillsLine, accessibilityLine].join('\n');
},
};
module.exports = userProfileManager;
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