app: add diceware injection module

1 files changed, 55 insertions, 0 deletions

diff --git a/app/src/main/java/dev/msfjarvis/aps/injection/pwgen/DicewareModule.kt b/app/src/main/java/dev/msfjarvis/aps/injection/pwgen/DicewareModule.kt
new file mode 100644
index 00000000..8aed12de
--- /dev/null
+++ b/app/src/main/java/dev/msfjarvis/aps/injection/pwgen/DicewareModule.kt
@@ -0,0 +1,55 @@
+/*
+ * Copyright © 2014-2021 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package dev.msfjarvis.aps.injection.pwgen
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.components.FragmentComponent
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dev.msfjarvis.aps.passgen.diceware.DicewarePassphraseGenerator
+import dev.msfjarvis.aps.passgen.diceware.Die
+import dev.msfjarvis.aps.passgen.diceware.RandomIntGenerator
+import java.io.InputStream
+import java.security.SecureRandom
+import javax.inject.Qualifier
+
+@Module
+@InstallIn(FragmentComponent::class)
+object DicewareModule {
+
+  @Provides
+  fun provideDicewareGenerator(
+    die: Die,
+    @WordlistQualifier wordList: InputStream,
+  ): DicewarePassphraseGenerator {
+    return DicewarePassphraseGenerator(die, wordList)
+  }
+
+  @Provides
+  fun provideDie(
+    intGenerator: RandomIntGenerator,
+  ): Die {
+    return Die(6, intGenerator)
+  }
+
+  @Provides
+  fun provideRandomIntGenerator(): RandomIntGenerator {
+    return RandomIntGenerator { range ->
+      SecureRandom().nextInt(range.last).coerceAtLeast(range.first)
+    }
+  }
+
+  @[Provides WordlistQualifier]
+  fun provideDefaultWordList(@ApplicationContext context: Context): InputStream {
+    return context.resources.openRawResource(
+      dev.msfjarvis.aps.passgen.diceware.R.raw.diceware_wordlist
+    )
+  }
+}
+
+@Qualifier annotation class WordlistQualifier