Adicionar chat IA com API

2026-06-16 17:15:25 +01:00
commit 4786a9c740
51 changed files with 1217 additions and 0 deletions
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -0,0 +1,43 @@
+plugins {
+    alias(libs.plugins.android.application)
+}
+
+android {
+    namespace = "com.example.api"
+    compileSdk = 36
+
+    defaultConfig {
+        applicationId = "com.example.api"
+        minSdk = 24
+        targetSdk = 36
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+}
+
+dependencies {
+
+    implementation(libs.appcompat)
+    implementation(libs.material)
+    implementation(libs.activity)
+    implementation(libs.constraintlayout)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.ext.junit)
+    androidTestImplementation(libs.espresso.core)
+}
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
--- a/app/src/androidTest/java/com/example/api/ExampleInstrumentedTest.java
+++ b/app/src/androidTest/java/com/example/api/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.api;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.api", appContext.getPackageName());
+    }
+}
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.API">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
--- a/app/src/main/java/com/example/api/MainActivity.java
+++ b/app/src/main/java/com/example/api/MainActivity.java
@@ -0,0 +1,203 @@
+package com.example.api;
+
+import android.os.Bundle;
+import android.view.Gravity;
+import android.view.View;
+import android.view.inputmethod.EditorInfo;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import com.google.android.material.button.MaterialButton;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+
+public class MainActivity extends AppCompatActivity {
+
+    private static final String API_URL = "https://text.pollinations.ai/openai";
+
+    private LinearLayout messagesContainer;
+    private ScrollView chatScroll;
+    private EditText promptInput;
+    private MaterialButton sendButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_main);
+
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
+            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            return insets;
+        });
+
+        messagesContainer = findViewById(R.id.messagesContainer);
+        chatScroll = findViewById(R.id.chatScroll);
+        promptInput = findViewById(R.id.promptInput);
+        sendButton = findViewById(R.id.sendButton);
+
+        addMessage("Olá! Sou uma IA ligada a uma API. Faz-me uma pergunta.", false);
+
+        sendButton.setOnClickListener(v -> sendPrompt());
+        promptInput.setOnEditorActionListener((v, actionId, event) -> {
+            if (actionId == EditorInfo.IME_ACTION_SEND) {
+                sendPrompt();
+                return true;
+            }
+            return false;
+        });
+    }
+
+    private void sendPrompt() {
+        String prompt = promptInput.getText().toString().trim();
+        if (prompt.isEmpty()) {
+            return;
+        }
+
+        promptInput.setText("");
+        addMessage(prompt, true);
+        TextView loadingMessage = addMessage("A pensar...", false);
+        setSending(true);
+
+        new Thread(() -> {
+            try {
+                String answer = askAi(prompt);
+                runOnUiThread(() -> loadingMessage.setText(answer));
+            } catch (Exception exception) {
+                runOnUiThread(() -> loadingMessage.setText(
+                        "Não consegui ligar à API agora. Verifica a internet e tenta novamente."
+                ));
+            } finally {
+                runOnUiThread(() -> setSending(false));
+            }
+        }).start();
+    }
+
+    private void setSending(boolean sending) {
+        sendButton.setEnabled(!sending);
+        sendButton.setText(sending ? "..." : "Enviar");
+    }
+
+    private TextView addMessage(String message, boolean fromUser) {
+        LinearLayout row = new LinearLayout(this);
+        row.setGravity(fromUser ? Gravity.END : Gravity.START);
+        row.setPadding(0, dp(6), 0, dp(6));
+
+        TextView bubble = new TextView(this);
+        bubble.setText(message);
+        bubble.setTextSize(15);
+        bubble.setLineSpacing(dp(2), 1f);
+        bubble.setMaxWidth(getResources().getDisplayMetrics().widthPixels - dp(72));
+        bubble.setPadding(dp(14), dp(10), dp(14), dp(10));
+        bubble.setTextColor(fromUser ? getColor(R.color.white) : getColor(R.color.text_primary));
+        bubble.setBackgroundResource(fromUser ? R.drawable.bg_user_message : R.drawable.bg_ai_message);
+
+        row.addView(bubble);
+        messagesContainer.addView(row);
+        chatScroll.post(() -> chatScroll.fullScroll(View.FOCUS_DOWN));
+        return bubble;
+    }
+
+    private String askAi(String userPrompt) throws Exception {
+        JSONObject systemMessage = new JSONObject();
+        systemMessage.put("role", "system");
+        systemMessage.put(
+                "content",
+                "Responde sempre em português europeu. "
+                        + "Sê natural, curto e claro, como uma IA de chat para um trabalho da escola."
+        );
+
+        JSONObject userMessage = new JSONObject();
+        userMessage.put("role", "user");
+        userMessage.put("content", userPrompt);
+
+        JSONArray messages = new JSONArray();
+        messages.put(systemMessage);
+        messages.put(userMessage);
+
+        JSONObject requestBody = new JSONObject();
+        requestBody.put("model", "openai");
+        requestBody.put("messages", messages);
+
+        HttpURLConnection connection = (HttpURLConnection) new URL(API_URL).openConnection();
+        connection.setRequestMethod("POST");
+        connection.setConnectTimeout(20000);
+        connection.setReadTimeout(60000);
+        connection.setDoOutput(true);
+        connection.setRequestProperty("Content-Type", "application/json");
+
+        byte[] body = requestBody.toString().getBytes(StandardCharsets.UTF_8);
+        try (OutputStream outputStream = connection.getOutputStream()) {
+            outputStream.write(body);
+        }
+
+        int responseCode = connection.getResponseCode();
+        InputStream stream = responseCode >= 200 && responseCode < 300
+                ? connection.getInputStream()
+                : connection.getErrorStream();
+        String response = readStream(stream);
+
+        if (responseCode < 200 || responseCode >= 300) {
+            throw new IOException("API error: " + responseCode);
+        }
+
+        return readAiText(response);
+    }
+
+    private String readStream(InputStream stream) throws IOException {
+        if (stream == null) {
+            return "";
+        }
+
+        StringBuilder builder = new StringBuilder();
+        try (BufferedReader reader = new BufferedReader(
+                new InputStreamReader(stream, StandardCharsets.UTF_8)
+        )) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                builder.append(line);
+            }
+        }
+        return builder.toString();
+    }
+
+    private String readAiText(String response) throws Exception {
+        JSONObject json = new JSONObject(response);
+        JSONArray choices = json.optJSONArray("choices");
+        if (choices == null || choices.length() == 0) {
+            throw new IOException("Response without choices");
+        }
+
+        JSONObject firstChoice = choices.optJSONObject(0);
+        JSONObject message = firstChoice == null ? null : firstChoice.optJSONObject("message");
+        String text = message == null ? "" : message.optString("content", "").trim();
+        if (text.isEmpty()) {
+            throw new IOException("Response without text");
+        }
+        return text;
+    }
+
+    private int dp(int value) {
+        return Math.round(value * getResources().getDisplayMetrics().density);
+    }
+}
+q
--- a/app/src/main/res/drawable/bg_ai_message.xml
+++ b/app/src/main/res/drawable/bg_ai_message.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/ai_bubble" />
+    <corners
+        android:bottomLeftRadius="6dp"
+        android:bottomRightRadius="18dp"
+        android:topLeftRadius="18dp"
+        android:topRightRadius="18dp" />
+    <stroke
+        android:width="1dp"
+        android:color="@color/line_soft" />
+</shape>
--- a/app/src/main/res/drawable/bg_bottom_bar.xml
+++ b/app/src/main/res/drawable/bg_bottom_bar.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/app_background" />
+</shape>
--- a/app/src/main/res/drawable/bg_chat_header.xml
+++ b/app/src/main/res/drawable/bg_chat_header.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <gradient
+        android:angle="135"
+        android:endColor="@color/accent_coral"
+        android:startColor="@color/accent_teal" />
+    <corners android:bottomLeftRadius="28dp" android:bottomRightRadius="28dp" />
+</shape>
--- a/app/src/main/res/drawable/bg_input.xml
+++ b/app/src/main/res/drawable/bg_input.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/surface" />
+    <corners android:radius="24dp" />
+    <stroke
+        android:width="1dp"
+        android:color="@color/line_soft" />
+</shape>
--- a/app/src/main/res/drawable/bg_user_message.xml
+++ b/app/src/main/res/drawable/bg_user_message.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/user_bubble" />
+    <corners
+        android:bottomLeftRadius="18dp"
+        android:bottomRightRadius="6dp"
+        android:topLeftRadius="18dp"
+        android:topRightRadius="18dp" />
+</shape>
--- a/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
--- a/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ b/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/app_background"
+    android:orientation="vertical"
+    tools:context=".MainActivity"
+    tools:ignore="HardcodedText">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="150dp"
+        android:background="@drawable/bg_chat_header"
+        android:gravity="bottom"
+        android:orientation="vertical"
+        android:paddingStart="24dp"
+        android:paddingEnd="24dp"
+        android:paddingBottom="24dp">
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:includeFontPadding="false"
+            android:text="Chat IA"
+            android:textColor="@color/white"
+            android:textSize="30sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:text="Pergunta alguma coisa e recebe uma resposta da IA."
+            android:textColor="#EEF9F7"
+            android:textSize="15sp" />
+    </LinearLayout>
+
+    <ScrollView
+        android:id="@+id/chatScroll"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:clipToPadding="false"
+        android:paddingStart="18dp"
+        android:paddingTop="18dp"
+        android:paddingEnd="18dp"
+        android:paddingBottom="12dp">
+
+        <LinearLayout
+            android:id="@+id/messagesContainer"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical" />
+    </ScrollView>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@drawable/bg_bottom_bar"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:paddingStart="14dp"
+        android:paddingTop="10dp"
+        android:paddingEnd="14dp"
+        android:paddingBottom="14dp">
+
+        <EditText
+            android:id="@+id/promptInput"
+            android:layout_width="0dp"
+            android:layout_height="52dp"
+            android:layout_marginEnd="10dp"
+            android:layout_weight="1"
+            android:background="@drawable/bg_input"
+            android:hint="Escreve uma pergunta..."
+            android:imeOptions="actionSend"
+            android:inputType="textCapSentences|textMultiLine"
+            android:maxLines="3"
+            android:minHeight="52dp"
+            android:paddingStart="18dp"
+            android:paddingEnd="18dp"
+            android:textColor="@color/text_primary"
+            android:textColorHint="@color/text_secondary"
+            android:textSize="15sp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/sendButton"
+            android:layout_width="96dp"
+            android:layout_height="52dp"
+            android:text="Enviar"
+            android:textAllCaps="false"
+            android:textColor="@color/white"
+            android:textSize="14sp"
+            android:textStyle="bold"
+            app:backgroundTint="@color/accent_teal"
+            app:cornerRadius="24dp" />
+    </LinearLayout>
+</LinearLayout>
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
--- a/app/src/main/res/mipmap-hdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-hdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-mdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-mdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
--- a/app/src/main/res/values-night/themes.xml
+++ b/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.API" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="app_background">#F7F4EF</color>
+    <color name="text_primary">#1E2933</color>
+    <color name="text_secondary">#6B7280</color>
+    <color name="surface">#FFFFFFFF</color>
+    <color name="line_soft">#E5E1DA</color>
+    <color name="accent_teal">#138C86</color>
+    <color name="accent_teal_dark">#0D5E5A</color>
+    <color name="accent_coral">#F2665E</color>
+    <color name="user_bubble">#138C86</color>
+    <color name="ai_bubble">#FFFFFF</color>
+</resources>
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Chat IA</string>
+</resources>
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -0,0 +1,9 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.API" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your light theme here. -->
+        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
+    </style>
+
+    <style name="Theme.API" parent="Base.Theme.API" />
+</resources>
--- a/app/src/main/res/xml/backup_rules.xml
+++ b/app/src/main/res/xml/backup_rules.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older than API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
--- a/app/src/main/res/xml/data_extraction_rules.xml
+++ b/app/src/main/res/xml/data_extraction_rules.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
--- a/app/src/test/java/com/example/api/ExampleUnitTest.java
+++ b/app/src/test/java/com/example/api/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.api;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}