Fix Supabase OAuth flow and various UI updates

App.tsx

@@ -1,11 +1,34 @@
 import { StatusBar } from 'expo-status-bar';
-import React from 'react';
+import React, { useEffect } from 'react';
 import { NavigationContainer } from '@react-navigation/native';
 import { SafeAreaProvider } from 'react-native-safe-area-context';
 import AppNavigator from './src/navigation/AppNavigator';
 import { AuthProvider } from './src/contexts/AuthContext';
+import * as Linking from 'expo-linking';
+import * as QueryParams from 'expo-auth-session/build/QueryParams';
+import { supabase } from './src/services/supabase';
 
 export default function App() {
+  useEffect(() => {
+    const catchTokenOnLoad = async () => {
+      const url = await Linking.getInitialURL();
+      if (!url) return;
+      
+      // Supabase sends tokens after a '#' which Expo might ignore, replace it with '?'
+      const cleanUrl = url.replace('#', '?');
+      const { params, errorCode } = QueryParams.getQueryParams(cleanUrl);
+      
+      if (params?.access_token) {
+        console.log('🔥 TOKEN APANHADO NO ARRANQUE!');
+        await supabase.auth.setSession({
+          access_token: params.access_token,
+          refresh_token: params.refresh_token || '',
+        });
+      }
+    };
+    catchTokenOnLoad();
+  }, []);
+
   return (
     <SafeAreaProvider>
       <AuthProvider>

app.json

@@ -1,6 +1,7 @@
 {
   "expo": {
     "name": "roadtrip-dj",
+    "scheme": "roadtripdj",
     "slug": "roadtrip-dj",
     "version": "1.0.0",
     "orientation": "portrait",

src/screens/auth/LoginScreen.tsx

@@ -1,18 +1,20 @@
-import React, { useState } from 'react';
+import React, { useState, useEffect } from 'react';
 import { View, Text, TextInput, TouchableOpacity, StyleSheet, SafeAreaView, KeyboardAvoidingView, Platform, ScrollView, Alert, ActivityIndicator } from 'react-native';
 import { Car, Music } from 'lucide-react-native';
 import { colors } from '../../utils/colors';
 import { supabase } from '../../services/supabase';
 import { makeRedirectUri } from 'expo-auth-session';
-import * as WebBrowser from 'expo-web-browser';
+import * as QueryParams from 'expo-auth-session/build/QueryParams';
+import * as Linking from 'expo-linking';
 
-WebBrowser.maybeCompleteAuthSession();
 // @ts-ignore
 export default function LoginScreen({ navigation }) {
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
   const [loading, setLoading] = useState(false);
 
+
+
   const handleLogin = async () => {
     if (!email || !password) {
       Alert.alert('Erro', 'Por favor preenche todos os campos.');
@@ -31,28 +33,14 @@ export default function LoginScreen({ navigation }) {
     setLoading(false);
   };
 
-  const handleSpotifyAuth = async () => {
-    try {
-      const redirectUri = makeRedirectUri();
-      const { data, error } = await supabase.auth.signInWithOAuth({
-        provider: 'spotify',
-        options: {
-          redirectTo: redirectUri,
-        },
-      });
-
-      if (error) throw error;
-
-      if (data?.url) {
-        const res = await WebBrowser.openAuthSessionAsync(data.url, redirectUri);
-        if (res.type === 'success') {
-          const { url } = res;
-          // Ensure Supabase catches the session from the returned URL
-          await supabase.auth.getSessionFromUrl(url);
-        }
-      }
-    } catch (err: any) {
-      Alert.alert('Erro', err?.message || 'Ocorreu um erro no Spotify Auth.');
+  const handleSpotifyLogin = async () => {
+    const redirectUrl = Linking.createURL('/');
+    const { data, error } = await supabase.auth.signInWithOAuth({
+      provider: 'spotify',
+      options: { redirectTo: redirectUrl }
+    });
+    if (data?.url) {
+      await Linking.openURL(data.url);
     }
   };
 
@@ -109,7 +97,7 @@ export default function LoginScreen({ navigation }) {
               )}
             </TouchableOpacity>
 
-            <TouchableOpacity style={styles.spotifyButton} onPress={handleSpotifyAuth}>
+            <TouchableOpacity style={styles.spotifyButton} onPress={handleSpotifyLogin}>
               {/* Note: In a real app we would use an actual Spotify SVG logo. Using Music icon for now as a placeholder for the Spotify logo. */}
               <Music color={colors.white} size={20} style={styles.spotifyIcon} />
               <Text style={styles.spotifyButtonText}>Entrar com Spotify</Text>

src/screens/auth/RegisterScreen.tsx

@@ -5,6 +5,7 @@ import { colors } from '../../utils/colors';
 import { supabase } from '../../services/supabase';
 import { makeRedirectUri } from 'expo-auth-session';
 import * as WebBrowser from 'expo-web-browser';
+import * as QueryParams from 'expo-auth-session/build/QueryParams';
 
 WebBrowser.maybeCompleteAuthSession();
 // @ts-ignore
@@ -58,8 +59,14 @@ export default function RegisterScreen({ navigation }) {
         const res = await WebBrowser.openAuthSessionAsync(data.url, redirectUri);
         if (res.type === 'success') {
           const { url } = res;
-          // Ensure Supabase catches the session from the returned URL
-          await supabase.auth.getSessionFromUrl(url);
+          const { params, errorCode } = QueryParams.getQueryParams(url);
+          if (errorCode) throw new Error(errorCode);
+          if (params.access_token && params.refresh_token) {
+            await supabase.auth.setSession({
+              access_token: params.access_token,
+              refresh_token: params.refresh_token,
+            });
+          }
         }
       }
     } catch (err: any) {

src/screens/trip/NewTripScreen.tsx

@@ -1,15 +1,179 @@
-import React from 'react';
-import { View, Text, StyleSheet, SafeAreaView, TouchableOpacity, TextInput, ImageBackground, KeyboardAvoidingView, Platform, ScrollView } from 'react-native';
-import { X, MapPin, ArrowRight } from 'lucide-react-native';
+import React, { useState } from 'react';
+import { View, Text, TextInput, TouchableOpacity, StyleSheet, KeyboardAvoidingView, ScrollView, Platform, ActivityIndicator, Alert, Linking, StatusBar } from 'react-native';
+import { SafeAreaView } from 'react-native-safe-area-context';
+import { X, MapPin, ArrowRight, Navigation } from 'lucide-react-native';
 import { colors } from '../../utils/colors';
+import { supabase } from '../../services/supabase';
 
 // @ts-ignore
 export default function NewTripScreen({ navigation }) {
+  const [tripName, setTripName] = useState('');
+  const [origin, setOrigin] = useState('');
+  const [destination, setDestination] = useState('');
+  const [distance, setDistance] = useState('');
+  const [duration, setDuration] = useState('');
+  const [loading, setLoading] = useState(false);
 
-  const handleCreateRoute = () => {
-    // In a real app, this would trigger the orchestration flow (Ollama -> Spotify -> Firebase)
-    // For now, we mock success and navigate to the Trip Details
-    navigation.replace('TripDetails');
+  const handleCalculateTrip = async () => {
+    if (!origin || !destination) {
+      Alert.alert('Erro', 'Por favor preenche ambos os campos de partida e destino.');
+      return;
+    }
+
+    if (!tripName) {
+      Alert.alert('Erro', 'Por favor dá um nome à tua viagem.');
+      return;
+    }
+
+    setLoading(true);
+    try {
+      const apiKey = 'AIzaSyDocu-PEHAyrdV8OUEPMXye9A_rpYzOA34';
+      const url = `https://maps.googleapis.com/maps/api/directions/json?origin=${encodeURIComponent(origin)}&destination=${encodeURIComponent(destination)}&key=${apiKey}`;
+
+      const response = await fetch(url);
+      const data = await response.json();
+
+      if (data.status === 'OK') {
+        const leg = data.routes[0].legs[0];
+        const finalDistance = leg.distance.text;
+        const finalDuration = leg.duration.text;
+        const tripDurationMs = leg.duration.value * 1000;
+        
+        setDistance(finalDistance);
+        setDuration(finalDuration);
+
+        try {
+          // A. Get provider token
+          const { data: sessionData, error: sessionError } = await supabase.auth.getSession();
+          if (sessionError || !sessionData?.session) throw new Error('Session not found.');
+          const providerToken = sessionData.session.provider_token;
+          if (!providerToken) throw new Error('Spotify provider token missing.');
+
+          // B. Fetch Spotify User ID
+          const spotifyUserRes = await fetch('https://api.spotify.com/v1/me', {
+            headers: { 'Authorization': `Bearer ${providerToken}` }
+          });
+          const spotifyUserData = await spotifyUserRes.json();
+          if (!spotifyUserData.id) throw new Error('Could not fetch Spotify User ID');
+          const spotifyUserId = spotifyUserData.id;
+
+          // C. Call Ollama server
+          const ollamaRes = await fetch("http://89.114.196.110:11434/api/chat", {
+            method: "POST",
+            headers: { "Content-Type": "application/json" },
+            body: JSON.stringify({
+              model: "qwen3-coder:30b",
+              messages: [{ "role": "user", "content": `I am taking a roadtrip from ${origin} to ${destination}. Reply ONLY with 3 Spotify genre seeds separated by commas (e.g., pop,rock,indie) that fit this journey. No other text.` }],
+              stream: false
+            })
+          });
+          const ollamaData = await ollamaRes.json();
+          const seed_genres = ollamaData.message.content.trim().replace(/\s+/g, '').toLowerCase();
+
+          // D. Create empty playlist
+          const createPlaylistRes = await fetch(`https://api.spotify.com/v1/users/${spotifyUserId}/playlists`, {
+            method: 'POST',
+            headers: {
+              'Authorization': `Bearer ${providerToken}`,
+              'Content-Type': 'application/json'
+            },
+            body: JSON.stringify({
+              name: tripName,
+              description: `Roadtrip from ${origin} to ${destination}. Genres: ${seed_genres}`,
+              public: false
+            })
+          });
+          const playlistData = await createPlaylistRes.json();
+          if (!playlistData.id) throw new Error('Could not create playlist');
+          const playlistId = playlistData.id;
+          const generatedPlaylistUrl = playlistData.external_urls.spotify;
+
+          // E. Fetch Spotify track recommendations
+          let accumulatedDurationMs = 0;
+          let trackUris: string[] = [];
+          let attempts = 0;
+          while (accumulatedDurationMs < tripDurationMs && attempts < 10) {
+            const recommendationsRes = await fetch(`https://api.spotify.com/v1/recommendations?seed_genres=${encodeURIComponent(seed_genres)}&limit=50`, {
+              headers: { 'Authorization': `Bearer ${providerToken}` }
+            });
+            if (!recommendationsRes.ok) break;
+            const recommendationsData = await recommendationsRes.json();
+            if (!recommendationsData.tracks || recommendationsData.tracks.length === 0) break;
+
+            for (const track of recommendationsData.tracks) {
+              if (!trackUris.includes(track.uri)) {
+                  trackUris.push(track.uri);
+                  accumulatedDurationMs += track.duration_ms;
+                  if (accumulatedDurationMs >= tripDurationMs) break;
+              }
+            }
+            attempts++;
+          }
+
+          if (trackUris.length > 0) {
+            // F. Add tracks to playlist
+            const chunkSize = 100;
+            for (let i = 0; i < trackUris.length; i += chunkSize) {
+                const chunk = trackUris.slice(i, i + chunkSize);
+                await fetch(`https://api.spotify.com/v1/playlists/${playlistId}/tracks`, {
+                  method: 'POST',
+                  headers: {
+                    'Authorization': `Bearer ${providerToken}`,
+                    'Content-Type': 'application/json'
+                  },
+                  body: JSON.stringify({ uris: chunk })
+                });
+            }
+          } else {
+             console.log("No tracks found for genres:", seed_genres);
+          }
+
+          // G. Save to Supabase
+          const { data: { user } } = await supabase.auth.getUser();
+          if (user) {
+            const { error: dbError } = await supabase.from('trips').insert({ 
+              user_id: user.id, 
+              title: tripName, 
+              origin, 
+              destination, 
+              distance: finalDistance, 
+              duration: finalDuration, 
+              playlist_url: generatedPlaylistUrl 
+            });
+            if (dbError) {
+               console.log("DB Insert error:", dbError);
+            }
+          }
+
+          Alert.alert('Sucesso!', 'Viagem e Playlist Criadas!');
+        } catch (playlistError) {
+          console.log("Error generating playlist:", playlistError);
+          Alert.alert('Erro Playlist', 'A viagem foi calculada, mas ocorreu um erro a criar a playlist.');
+        }
+
+      } else {
+        // O NOSSO DETETIVE ENTRA AQUI!
+        console.log("ERRO DA GOOGLE:", data);
+        Alert.alert(
+          'Culpado Encontrado',
+          `Motivo: ${data.status}\nDetalhe: ${data.error_message || 'Vê o terminal preto do PC'}`
+        );
+      }
+    } catch (error) {
+      Alert.alert('Erro', 'Ocorreu um erro ao comunicar com a API da Google.');
+      console.log("Erro de código:", error);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleOpenGoogleMaps = () => {
+    if (!origin || !destination) {
+      Alert.alert('Erro', 'Por favor preenche ambos os campos de partida e destino.');
+      return;
+    }
+    const url = `https://www.google.com/maps/dir/?api=1&origin=${encodeURIComponent(origin)}&destination=${encodeURIComponent(destination)}`;
+    Linking.openURL(url);
   };
 
   return (
@@ -34,11 +198,11 @@ export default function NewTripScreen({ navigation }) {
           <View style={styles.mapArea}>
             {/* Using a solid light gray color instead of a complex map image to keep it clean */}
             <View style={styles.mockRouteVisual}>
-               <View style={styles.routeDotLarge} />
-               <View style={styles.routeLineDashed} />
-               <View style={styles.routePinLarge}>
-                  <MapPin color={colors.white} size={14} />
-               </View>
+              <View style={styles.routeDotLarge} />
+              <View style={styles.routeLineDashed} />
+              <View style={styles.routePinLarge}>
+                <MapPin color={colors.white} size={14} />
+              </View>
             </View>
           </View>
 
@@ -51,6 +215,8 @@ export default function NewTripScreen({ navigation }) {
                 style={styles.textInput}
                 placeholder="Ex: Fim de semana no Algarve"
                 placeholderTextColor={colors.textSecondary}
+                value={tripName}
+                onChangeText={setTripName}
               />
             </View>
 
@@ -67,8 +233,10 @@ export default function NewTripScreen({ navigation }) {
                   <Text style={styles.inputLabel}>PARTIDA</Text>
                   <TextInput
                     style={[styles.textInput, styles.routeTextInput]}
-                    value="Lisboa, Portugal"
-                    placeholderTextColor={colors.textMain}
+                    placeholder="Ex: Lisboa, Portugal"
+                    placeholderTextColor={colors.textSecondary}
+                    value={origin}
+                    onChangeText={setOrigin}
                   />
                 </View>
 
@@ -76,25 +244,59 @@ export default function NewTripScreen({ navigation }) {
                   <Text style={styles.inputLabel}>DESTINO</Text>
                   <TextInput
                     style={[styles.textInput, styles.routeTextInput]}
-                    value="Porto, Portugal"
-                    placeholderTextColor={colors.textMain}
+                    placeholder="Ex: Porto, Portugal"
+                    placeholderTextColor={colors.textSecondary}
+                    value={destination}
+                    onChangeText={setDestination}
                   />
                 </View>
               </View>
             </View>
 
+            {/* Results Section */}
+            {(distance || duration) ? (
+              <View style={styles.resultsContainer}>
+                <View style={styles.resultItem}>
+                  <Text style={styles.resultLabel}>Distância</Text>
+                  <Text style={styles.resultValue}>{distance}</Text>
+                </View>
+                <View style={styles.resultDivider} />
+                <View style={styles.resultItem}>
+                  <Text style={styles.resultLabel}>Duração</Text>
+                  <Text style={styles.resultValue}>{duration}</Text>
+                </View>
+              </View>
+            ) : null}
+
           </View>
 
           {/* Bottom Actions */}
           <View style={styles.bottomActions}>
             <TouchableOpacity
               style={styles.primaryButton}
-              onPress={handleCreateRoute}
+              onPress={handleCalculateTrip}
+              disabled={loading}
             >
-              <Text style={styles.primaryButtonText}>Criar Rota & Playlist</Text>
-              <ArrowRight color={colors.white} size={20} />
+              {loading ? (
+                <ActivityIndicator color={colors.white} />
+              ) : (
+                <>
+                  <Text style={styles.primaryButtonText}>Calcular Viagem</Text>
+                  <ArrowRight color={colors.white} size={20} />
+                </>
+              )}
             </TouchableOpacity>
 
+            {(distance || duration) ? (
+              <TouchableOpacity
+                style={styles.secondaryButton}
+                onPress={handleOpenGoogleMaps}
+              >
+                <Navigation color={colors.primary} size={20} />
+                <Text style={styles.secondaryButtonText}>Abrir no Google Maps</Text>
+              </TouchableOpacity>
+            ) : null}
+
             <Text style={styles.disclaimerText}>
               A IA vai analisar o trajeto, pontos de interesse, clima{'\n'}e duração para criar a banda sonora perfeita.
             </Text>
@@ -282,4 +484,46 @@ const styles = StyleSheet.create({
     lineHeight: 18,
     fontWeight: '500',
   },
+  resultsContainer: {
+    flexDirection: 'row',
+    marginTop: 24,
+    paddingTop: 24,
+    borderTopWidth: 1,
+    borderTopColor: colors.inputBorder,
+  },
+  resultItem: {
+    flex: 1,
+    alignItems: 'center',
+  },
+  resultDivider: {
+    width: 1,
+    backgroundColor: colors.inputBorder,
+    marginHorizontal: 16,
+  },
+  resultLabel: {
+    fontSize: 12,
+    color: colors.textSecondary,
+    marginBottom: 4,
+    fontWeight: 'bold',
+  },
+  resultValue: {
+    fontSize: 18,
+    color: colors.textMain,
+    fontWeight: 'bold',
+  },
+  secondaryButton: {
+    backgroundColor: colors.inputBackground,
+    flexDirection: 'row',
+    justifyContent: 'center',
+    alignItems: 'center',
+    paddingVertical: 18,
+    borderRadius: 16,
+    marginBottom: 16,
+  },
+  secondaryButtonText: {
+    color: colors.primary,
+    fontSize: 16,
+    fontWeight: 'bold',
+    marginLeft: 8,
+  },
 });

src/services/supabase.ts

@@ -1,6 +1,7 @@
 import 'react-native-url-polyfill/auto';
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import { createClient } from '@supabase/supabase-js';
+import { AppState } from 'react-native';
 
 const supabaseUrl = process.env.EXPO_PUBLIC_SUPABASE_URL as string;
 const supabaseAnonKey = process.env.EXPO_PUBLIC_SUPABASE_ANON_KEY as string;
@@ -13,3 +14,8 @@ export const supabase = createClient(supabaseUrl, supabaseAnonKey, {
         detectSessionInUrl: false,
     },
 });
+
+AppState.addEventListener('change', (state) => {
+  if (state === 'active') { supabase.auth.startAutoRefresh(); } 
+  else { supabase.auth.stopAutoRefresh(); }
+});