Server Prompt Templates #2732
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@@ -6,4 +6,5 @@ enum class EditingMode { | |
| OUTPAINTING, | ||
| SUBJECT_REFERENCE, | ||
| STYLE_TRANSFER, | ||
| TEMPLATE, | ||
| } | ||
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| @@ -0,0 +1,142 @@ | ||
| package com.google.firebase.quickstart.ai.feature.text | ||
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| import android.net.Uri | ||
| import android.provider.OpenableColumns | ||
| import android.text.format.Formatter | ||
| import androidx.activity.compose.rememberLauncherForActivityResult | ||
| import androidx.activity.result.contract.ActivityResultContracts | ||
| import androidx.compose.foundation.Image | ||
| import androidx.compose.foundation.clickable | ||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.Row | ||
| import androidx.compose.foundation.layout.fillMaxWidth | ||
| import androidx.compose.foundation.layout.height | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.lazy.grid.GridCells | ||
| import androidx.compose.foundation.lazy.grid.LazyHorizontalGrid | ||
| import androidx.compose.foundation.lazy.grid.items | ||
| import androidx.compose.foundation.rememberScrollState | ||
| import androidx.compose.foundation.verticalScroll | ||
| import androidx.compose.material3.Card | ||
| import androidx.compose.material3.CardDefaults | ||
| import androidx.compose.material3.CircularProgressIndicator | ||
| import androidx.compose.material3.DropdownMenu | ||
| import androidx.compose.material3.DropdownMenuItem | ||
| import androidx.compose.material3.ElevatedCard | ||
| import androidx.compose.material3.MaterialTheme | ||
| import androidx.compose.material3.OutlinedTextField | ||
| import androidx.compose.material3.Text | ||
| import androidx.compose.material3.TextButton | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableIntStateOf | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.rememberCoroutineScope | ||
| import androidx.compose.runtime.saveable.rememberSaveable | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.graphics.asImageBitmap | ||
| import androidx.compose.ui.platform.LocalContext | ||
| import androidx.compose.ui.res.painterResource | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.lifecycle.compose.collectAsStateWithLifecycle | ||
| import androidx.lifecycle.viewmodel.compose.viewModel | ||
| import com.google.firebase.quickstart.ai.R | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.serialization.Serializable | ||
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| @Serializable | ||
| class TextGenRoute(val sampleId: String) | ||
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| @Composable | ||
| fun TextGenScreen( | ||
| textGenViewModel: TextGenViewModel = viewModel<TextGenViewModel>() | ||
| ) { | ||
| var textPrompt by rememberSaveable { mutableStateOf(textGenViewModel.initialPrompt) } | ||
| val errorMessage by textGenViewModel.errorMessage.collectAsStateWithLifecycle() | ||
| val isLoading by textGenViewModel.isLoading.collectAsStateWithLifecycle() | ||
| val generatedText by textGenViewModel.generatedText.collectAsStateWithLifecycle() | ||
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| Column( | ||
| modifier = Modifier.verticalScroll(rememberScrollState()) | ||
| ) { | ||
| ElevatedCard( | ||
| modifier = Modifier | ||
| .padding(all = 16.dp) | ||
| .fillMaxWidth(), | ||
| shape = MaterialTheme.shapes.large | ||
| ) { | ||
| OutlinedTextField( | ||
| value = textPrompt, | ||
| label = { Text("Prompt") }, | ||
| placeholder = { Text("Enter text to generate") }, | ||
| onValueChange = { textPrompt = it }, | ||
| modifier = Modifier | ||
| .padding(16.dp) | ||
| .fillMaxWidth() | ||
| ) | ||
| Row() { | ||
| TextButton( | ||
| onClick = { | ||
| if (textGenViewModel.allowEmptyPrompt || textPrompt.isNotBlank()) { | ||
| textGenViewModel.generate(textPrompt) | ||
| } | ||
| }, | ||
| modifier = Modifier.padding(end = 16.dp, bottom = 16.dp) | ||
| ) { | ||
| Text("Generate") | ||
| } | ||
| } | ||
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| } | ||
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| if (isLoading) { | ||
| Box( | ||
| contentAlignment = Alignment.Center, | ||
| modifier = Modifier | ||
| .padding(all = 8.dp) | ||
| .align(Alignment.CenterHorizontally) | ||
| ) { | ||
| CircularProgressIndicator() | ||
| } | ||
| } | ||
| errorMessage?.let { | ||
| Card( | ||
| modifier = Modifier | ||
| .padding(horizontal = 16.dp) | ||
| .fillMaxWidth(), | ||
| shape = MaterialTheme.shapes.large, | ||
| colors = CardDefaults.cardColors( | ||
| containerColor = MaterialTheme.colorScheme.errorContainer | ||
| ) | ||
| ) { | ||
| Text( | ||
| text = it, | ||
| color = MaterialTheme.colorScheme.error, | ||
| modifier = Modifier.padding(all = 16.dp) | ||
| ) | ||
| } | ||
| } | ||
| generatedText?.let { | ||
| Card( | ||
| modifier = Modifier | ||
| .padding(horizontal = 16.dp) | ||
| .fillMaxWidth(), | ||
| shape = MaterialTheme.shapes.large, | ||
| colors = CardDefaults.cardColors( | ||
| containerColor = MaterialTheme.colorScheme.primaryContainer | ||
| ) | ||
| ) { | ||
| Text( | ||
| text = it, | ||
| color = MaterialTheme.colorScheme.primary, | ||
| modifier = Modifier.padding(all = 16.dp) | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package com.google.firebase.quickstart.ai.feature.text | ||
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| import androidx.lifecycle.SavedStateHandle | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.viewModelScope | ||
| import androidx.navigation.toRoute | ||
| import com.google.firebase.Firebase | ||
| import com.google.firebase.ai.ai | ||
| import com.google.firebase.ai.type.PublicPreviewAPI | ||
| import com.google.firebase.ai.type.asTextOrNull | ||
| import com.google.firebase.quickstart.ai.FIREBASE_AI_SAMPLES | ||
| import kotlinx.coroutines.flow.MutableStateFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.launch | ||
| import com.google.firebase.ai.GenerativeModel | ||
| import com.google.firebase.ai.TemplateGenerativeModel | ||
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| @OptIn(PublicPreviewAPI::class) | ||
| class TextGenViewModel( | ||
| savedStateHandle: SavedStateHandle | ||
| ) : ViewModel() { | ||
| private val sampleId = savedStateHandle.toRoute<TextGenRoute>().sampleId | ||
| private val sample = FIREBASE_AI_SAMPLES.first { it.id == sampleId } | ||
| val initialPrompt = sample.initialPrompt?.parts?.first()?.asTextOrNull().orEmpty() | ||
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| private val _errorMessage: MutableStateFlow<String?> = MutableStateFlow(null) | ||
| val errorMessage: StateFlow<String?> = _errorMessage | ||
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| private val _isLoading = MutableStateFlow(false) | ||
| val isLoading: StateFlow<Boolean> = _isLoading | ||
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| val allowEmptyPrompt = sample.allowEmptyPrompt | ||
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| val templateId = sample.templateId | ||
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| val templateKey = sample.templateKey | ||
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| private val _generatedText = MutableStateFlow<String?>(null) | ||
| val generatedText: StateFlow<String?> = _generatedText | ||
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| // Firebase AI Logic | ||
| private val generativeModel: GenerativeModel | ||
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|
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| private val templateGenerativeModel: TemplateGenerativeModel | ||
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| init { | ||
| generativeModel = Firebase.ai( | ||
| backend = sample.backend // GenerativeBackend.googleAI() by default | ||
| ).generativeModel( | ||
| modelName = sample.modelName ?: "gemini-2.5-flash", | ||
| systemInstruction = sample.systemInstructions, | ||
| generationConfig = sample.generationConfig, | ||
| tools = sample.tools | ||
| ) | ||
| templateGenerativeModel = Firebase.ai.templateGenerativeModel() | ||
| } | ||
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| fun generate(inputText: String) { | ||
| viewModelScope.launch { | ||
| _isLoading.value = true | ||
| _errorMessage.value = null // clear error message | ||
| try { | ||
| val generativeResponse = if (templateId != null) { | ||
| templateGenerativeModel | ||
| .generateContent(templateId, mapOf(templateKey!! to inputText)) | ||
| } else { | ||
| generativeModel.generateContent(inputText) | ||
| } | ||
| _generatedText.value = generativeResponse.text | ||
| } catch (e: Exception) { | ||
| val errorMessage = | ||
| if ((e.localizedMessage?.contains("not found") == true) && (templateId != null)) { | ||
| "Template was not found, please verify that your project contains a template named \"$templateId\"." | ||
| } else { | ||
| e.localizedMessage | ||
| } | ||
| _errorMessage.value = errorMessage | ||
| } finally { | ||
| _isLoading.value = false | ||
| } | ||
| } | ||
| } | ||
| } | ||
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