Separated weight tracking

App.tsx

@@ -12,6 +12,7 @@ import { TabView, WorkoutSession, WorkoutSet, WorkoutPlan, User, Language } from
 import { getSessions, saveSession, deleteSession, getPlans, getActiveSession, updateActiveSession, deleteActiveSession, updateSetInActiveSession, deleteSetFromActiveSession } from './services/storage';
 import { getCurrentUserProfile, getMe } from './services/auth';
 import { getSystemLanguage } from './services/i18n';
+import { logWeight } from './services/weight';
 import { generateId } from './utils/uuid';
 
 function App() {
@@ -114,6 +115,11 @@ function App() {
 
     // Save to database immediately
     await saveSession(currentUser.id, newSession);
+
+    // If startWeight was provided (meaning user explicitly entered it), log it to weight history
+    if (startWeight) {
+      await logWeight(startWeight);
+    }
   };
 
   const handleEndSession = async () => {

components/Profile.tsx

@@ -1,8 +1,9 @@
 
 import React, { useState, useEffect } from 'react';
-import { User, Language, ExerciseDef, ExerciseType } from '../types';
+import { User, Language, ExerciseDef, ExerciseType, BodyWeightRecord } from '../types';
 import { createUser, changePassword, updateUserProfile, getCurrentUserProfile, getUsers, deleteUser, toggleBlockUser, adminResetPassword, getMe } from '../services/auth';
 import { getExercises, saveExercise } from '../services/storage';
+import { getWeightHistory, logWeight } from '../services/weight';
 import { User as UserIcon, LogOut, Save, Shield, UserPlus, Lock, Calendar, Ruler, Scale, PersonStanding, Globe, ChevronDown, ChevronUp, Trash2, Ban, KeyRound, Dumbbell, Archive, ArchiveRestore, Pencil, Plus } from 'lucide-react';
 import ExerciseModal from './ExerciseModal';
 import { t } from '../services/i18n';
@@ -23,6 +24,11 @@ const Profile: React.FC<ProfileProps> = ({ user, onLogout, lang, onLanguageChang
     const [birthDate, setBirthDate] = useState<string>('');
     const [gender, setGender] = useState<string>('MALE');
 
+    // Weight Tracker
+    const [weightHistory, setWeightHistory] = useState<BodyWeightRecord[]>([]);
+    const [todayWeight, setTodayWeight] = useState<string>('');
+    const [showWeightTracker, setShowWeightTracker] = useState(false);
+
     // Admin: Create User
     const [newUserEmail, setNewUserEmail] = useState('');
     const [newUserPass, setNewUserPass] = useState('');
@@ -72,9 +78,22 @@ const Profile: React.FC<ProfileProps> = ({ user, onLogout, lang, onLanguageChang
             refreshUserList();
         }
         refreshExercises();
+        refreshWeightHistory();
         // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [user.id, user.role, JSON.stringify(user.profile)]);
 
+    const refreshWeightHistory = async () => {
+        const history = await getWeightHistory();
+        setWeightHistory(history);
+
+        // Check if we have a weight for today
+        const today = new Date().toISOString().split('T')[0];
+        const todayRecord = history.find(r => r.dateStr === today);
+        if (todayRecord) {
+            setTodayWeight(todayRecord.weight.toString());
+        }
+    };
+
     const refreshUserList = async () => {
         const res = await getUsers();
         if (res.success && res.users) {
@@ -99,6 +118,27 @@ const Profile: React.FC<ProfileProps> = ({ user, onLogout, lang, onLanguageChang
         setSnackbar({ isOpen: true, message, type });
     };
 
+    const handleLogWeight = async () => {
+        if (!todayWeight) return;
+        const weightVal = parseFloat(todayWeight);
+        if (isNaN(weightVal)) return;
+
+        const res = await logWeight(weightVal);
+        if (res) {
+            showSnackbar('Weight logged successfully', 'success');
+            refreshWeightHistory();
+            // Also update the profile weight display if it's today
+            setWeight(todayWeight);
+            // And trigger user update to sync across app
+            const userRes = await getMe();
+            if (userRes.success && userRes.user && onUserUpdate) {
+                onUserUpdate(userRes.user);
+            }
+        } else {
+            showSnackbar('Failed to log weight', 'error');
+        }
+    };
+
     const handleSaveProfile = async () => {
         const res = await updateUserProfile(user.id, {
             weight: parseFloat(weight) || undefined,
@@ -267,6 +307,55 @@ const Profile: React.FC<ProfileProps> = ({ user, onLogout, lang, onLanguageChang
                     </button>
                 </div>
 
+                {/* WEIGHT TRACKER */}
+                <div className="bg-surface-container rounded-xl p-4 border border-outline-variant/20">
+                    <button
+                        onClick={() => setShowWeightTracker(!showWeightTracker)}
+                        className="w-full flex justify-between items-center text-sm font-bold text-primary"
+                    >
+                        <span className="flex items-center gap-2"><Scale size={14} /> Weight Tracker</span>
+                        {showWeightTracker ? <ChevronUp size={16} /> : <ChevronDown size={16} />}
+                    </button>
+
+                    {showWeightTracker && (
+                        <div className="mt-4 space-y-4">
+                            <div className="flex gap-2 items-end">
+                                <div className="bg-surface-container-high rounded-t-lg border-b border-outline-variant px-3 py-2 flex-1">
+                                    <label className="text-[10px] text-on-surface-variant font-medium">Today's Weight (kg)</label>
+                                    <input
+                                        type="number"
+                                        step="0.1"
+                                        value={todayWeight}
+                                        onChange={(e) => setTodayWeight(e.target.value)}
+                                        className="w-full bg-transparent text-on-surface focus:outline-none"
+                                        placeholder="Enter weight..."
+                                    />
+                                </div>
+                                <button
+                                    onClick={handleLogWeight}
+                                    className="bg-primary text-on-primary px-4 py-3 rounded-lg font-medium text-sm mb-[1px]"
+                                >
+                                    Log
+                                </button>
+                            </div>
+
+                            <div className="space-y-2 max-h-60 overflow-y-auto">
+                                <h4 className="text-xs font-medium text-on-surface-variant">History</h4>
+                                {weightHistory.length === 0 ? (
+                                    <p className="text-xs text-on-surface-variant italic">No weight records yet.</p>
+                                ) : (
+                                    weightHistory.map(record => (
+                                        <div key={record.id} className="flex justify-between items-center p-3 bg-surface-container-high rounded-lg">
+                                            <span className="text-sm text-on-surface">{new Date(record.date).toLocaleDateString()}</span>
+                                            <span className="text-sm font-bold text-primary">{record.weight} kg</span>
+                                        </div>
+                                    ))
+                                )}
+                            </div>
+                        </div>
+                    )}
+                </div>
+
                 {/* EXERCISE MANAGER */}
                 <div className="bg-surface-container rounded-xl p-4 border border-outline-variant/20">
                     <button

components/Stats.tsx

@@ -1,6 +1,7 @@
 
-import React, { useMemo } from 'react';
+import React, { useMemo, useState, useEffect } from 'react';
-import { WorkoutSession, ExerciseType, Language } from '../types';
+import { WorkoutSession, ExerciseType, Language, BodyWeightRecord } from '../types';
+import { getWeightHistory } from '../services/weight';
 import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, BarChart, Bar } from 'recharts';
 import { t } from '../services/i18n';
 
@@ -10,6 +11,15 @@ interface StatsProps {
 }
 
 const Stats: React.FC<StatsProps> = ({ sessions, lang }) => {
+    const [weightRecords, setWeightRecords] = useState<BodyWeightRecord[]>([]);
+
+    useEffect(() => {
+        const fetchWeights = async () => {
+            const records = await getWeightHistory();
+            setWeightRecords(records);
+        };
+        fetchWeights();
+    }, []);
 
     const volumeData = useMemo(() => {
         const data = [...sessions].reverse().map(session => {
@@ -46,13 +56,11 @@ const Stats: React.FC<StatsProps> = ({ sessions, lang }) => {
     }, [sessions, lang]);
 
     const weightData = useMemo(() => {
-        return [...sessions].reverse()
+        return [...weightRecords].reverse().map(record => ({
-            .filter(s => s.userBodyWeight)
+            date: new Date(record.date).toLocaleDateString(lang === 'ru' ? 'ru-RU' : 'en-US', { day: 'numeric', month: 'short' }),
-            .map(session => ({
+            weight: record.weight
-                date: new Date(session.startTime).toLocaleDateString(lang === 'ru' ? 'ru-RU' : 'en-US', { day: 'numeric', month: 'short' }),
-                weight: session.userBodyWeight
         }));
-    }, [sessions, lang]);
+    }, [weightRecords, lang]);
 
     if (sessions.length < 2) {
         return (

server/prisma/schema.prisma

@@ -24,6 +24,18 @@ model User {
   sessions     WorkoutSession[]
   exercises    Exercise[]
   plans        WorkoutPlan[]
+  weightRecords BodyWeightRecord[]
+}
+
+model BodyWeightRecord {
+  id        String   @id @default(uuid())
+  userId    String
+  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  weight    Float
+  date      DateTime @default(now())
+  dateStr   String   // YYYY-MM-DD for unique constraint
+
+  @@unique([userId, dateStr])
 }
 
 model UserProfile {

server/src/index.ts

@@ -6,6 +6,7 @@ import exerciseRoutes from './routes/exercises';
 import sessionRoutes from './routes/sessions';
 import planRoutes from './routes/plans';
 import aiRoutes from './routes/ai';
+import weightRoutes from './routes/weight';
 import bcrypt from 'bcryptjs';
 import { PrismaClient } from '@prisma/client';
 
@@ -59,6 +60,7 @@ app.use('/api/exercises', exerciseRoutes);
 app.use('/api/sessions', sessionRoutes);
 app.use('/api/plans', planRoutes);
 app.use('/api/ai', aiRoutes);
+app.use('/api/weight', weightRoutes);
 
 app.get('/', (req, res) => {
     res.send('GymFlow AI API is running');

server/src/middleware/auth.ts

@@ -0,0 +1,21 @@
+import { Request, Response, NextFunction } from 'express';
+import jwt from 'jsonwebtoken';
+
+const JWT_SECRET = process.env.JWT_SECRET || 'secret';
+
+export const authenticateToken = (req: Request, res: Response, next: NextFunction) => {
+    const authHeader = req.headers['authorization'];
+    const token = authHeader && authHeader.split(' ')[1];
+
+    if (!token) {
+        return res.sendStatus(401);
+    }
+
+    jwt.verify(token, JWT_SECRET, (err: any, user: any) => {
+        if (err) {
+            return res.sendStatus(403);
+        }
+        (req as any).user = user;
+        next();
+    });
+};

server/src/routes/weight.ts

@@ -0,0 +1,78 @@
+import express from 'express';
+import { PrismaClient } from '@prisma/client';
+import { authenticateToken } from '../middleware/auth';
+
+const router = express.Router();
+const prisma = new PrismaClient();
+
+// Get weight history
+router.get('/', authenticateToken, async (req, res) => {
+    try {
+        const userId = (req as any).user.userId;
+        const weights = await prisma.bodyWeightRecord.findMany({
+            where: { userId },
+            orderBy: { date: 'desc' },
+            take: 365 // Limit to last year for now
+        });
+        res.json(weights);
+    } catch (error) {
+        console.error('Error fetching weight history:', error);
+        res.status(500).json({ error: 'Failed to fetch weight history' });
+    }
+});
+
+// Log weight
+router.post('/', authenticateToken, async (req, res) => {
+    try {
+        const userId = (req as any).user.userId;
+        const { weight, dateStr } = req.body;
+
+        if (!weight || !dateStr) {
+            return res.status(400).json({ error: 'Weight and dateStr are required' });
+        }
+
+        // Upsert: Update if exists for this day, otherwise create
+        const record = await prisma.bodyWeightRecord.upsert({
+            where: {
+                userId_dateStr: {
+                    userId,
+                    dateStr
+                }
+            },
+            update: {
+                weight: parseFloat(weight),
+                date: new Date(dateStr) // Update date object just in case
+            },
+            create: {
+                userId,
+                weight: parseFloat(weight),
+                dateStr,
+                date: new Date(dateStr)
+            }
+        });
+
+        // Also update the user profile weight to the latest logged weight
+        // But only if the logged date is today or in the future (or very recent)
+        // For simplicity, let's just update the profile weight if it's the most recent record
+        // Or we can just update it always if the user considers this their "current" weight.
+        // Let's check if this is the latest record by date.
+        const latestRecord = await prisma.bodyWeightRecord.findFirst({
+            where: { userId },
+            orderBy: { date: 'desc' }
+        });
+
+        if (latestRecord && latestRecord.id === record.id) {
+            await prisma.userProfile.update({
+                where: { userId },
+                data: { weight: parseFloat(weight) }
+            });
+        }
+
+        res.json(record);
+    } catch (error) {
+        console.error('Error logging weight:', error);
+        res.status(500).json({ error: 'Failed to log weight' });
+    }
+});
+
+export default router;

services/i18n.ts

@@ -75,6 +75,7 @@ const translations = {
     create_btn: 'Create',
     completed_session_sets: 'Completed in this session',
     add_weight: 'Add. Weight',
+    no_exercises_found: 'No exercises found',
 
     // Types
     type_strength: 'Free Weights & Machines',
@@ -225,6 +226,7 @@ const translations = {
     create_btn: 'Создать',
     completed_session_sets: 'Выполнено в этой тренировке',
     add_weight: 'Доп. вес',
+    no_exercises_found: 'Упражнения не найдены',
 
     // Types
     type_strength: 'Свободные веса и тренажеры',

services/weight.ts

@@ -0,0 +1,53 @@
+import { BodyWeightRecord } from '../types';
+
+const API_URL = '/api';
+
+export const getWeightHistory = async (): Promise<BodyWeightRecord[]> => {
+    const token = localStorage.getItem('token');
+    if (!token) return [];
+
+    try {
+        const response = await fetch(`${API_URL}/weight`, {
+            headers: {
+                'Authorization': `Bearer ${token}`
+            }
+        });
+
+        if (!response.ok) {
+            throw new Error('Failed to fetch weight history');
+        }
+
+        return await response.json();
+    } catch (error) {
+        console.error('Error fetching weight history:', error);
+        return [];
+    }
+};
+
+export const logWeight = async (weight: number, dateStr?: string): Promise<BodyWeightRecord | null> => {
+    const token = localStorage.getItem('token');
+    if (!token) return null;
+
+    try {
+        // Default to today if no date provided
+        const date = dateStr || new Date().toISOString().split('T')[0];
+
+        const response = await fetch(`${API_URL}/weight`, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+                'Authorization': `Bearer ${token}`
+            },
+            body: JSON.stringify({ weight, dateStr: date })
+        });
+
+        if (!response.ok) {
+            throw new Error('Failed to log weight');
+        }
+
+        return await response.json();
+    } catch (error) {
+        console.error('Error logging weight:', error);
+        return null;
+    }
+};

types.ts

@@ -72,6 +72,13 @@ export interface UserProfile {
   language?: Language;
 }
 
+export interface BodyWeightRecord {
+  id: string;
+  weight: number;
+  date: string; // ISO string
+  dateStr: string; // YYYY-MM-DD
+}
+
 export interface User {
   id: string;
   email: string;