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24 changes: 24 additions & 0 deletions
24
app/src/main/java/com/fankes/miui/notify/data/LoginDataSource.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package com.fankes.miui.notify.data | ||
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| import com.fankes.miui.notify.data.model.LoggedInUser | ||
| import java.io.IOException | ||
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| /** | ||
| * Class that handles authentication w/ login credentials and retrieves user information. | ||
| */ | ||
| class LoginDataSource { | ||
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| fun login(username: String, password: String): Result<LoggedInUser> { | ||
| try { | ||
| // TODO: handle loggedInUser authentication | ||
| val fakeUser = LoggedInUser(java.util.UUID.randomUUID().toString(), "Jane Doe") | ||
| return Result.Success(fakeUser) | ||
| } catch (e: Throwable) { | ||
| return Result.Error(IOException("Error logging in", e)) | ||
| } | ||
| } | ||
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| fun logout() { | ||
| // TODO: revoke authentication | ||
| } | ||
| } |
46 changes: 46 additions & 0 deletions
46
app/src/main/java/com/fankes/miui/notify/data/LoginRepository.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package com.fankes.miui.notify.data | ||
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| import com.fankes.miui.notify.data.model.LoggedInUser | ||
|
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| /** | ||
| * Class that requests authentication and user information from the remote data source and | ||
| * maintains an in-memory cache of login status and user credentials information. | ||
| */ | ||
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| class LoginRepository(val dataSource: LoginDataSource) { | ||
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| // in-memory cache of the loggedInUser object | ||
| var user: LoggedInUser? = null | ||
| private set | ||
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| val isLoggedIn: Boolean | ||
| get() = user != null | ||
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| init { | ||
| // If user credentials will be cached in local storage, it is recommended it be encrypted | ||
| // @see https://developer.android.com/training/articles/keystore | ||
| user = null | ||
| } | ||
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| fun logout() { | ||
| user = null | ||
| dataSource.logout() | ||
| } | ||
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| fun login(username: String, password: String): Result<LoggedInUser> { | ||
| // handle login | ||
| val result = dataSource.login(username, password) | ||
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| if (result is Result.Success) { | ||
| setLoggedInUser(result.data) | ||
| } | ||
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| return result | ||
| } | ||
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| private fun setLoggedInUser(loggedInUser: LoggedInUser) { | ||
| this.user = loggedInUser | ||
| // If user credentials will be cached in local storage, it is recommended it be encrypted | ||
| // @see https://developer.android.com/training/articles/keystore | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| package com.fankes.miui.notify.data | ||
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| /** | ||
| * A generic class that holds a value with its loading status. | ||
| * @param <T> | ||
| */ | ||
| sealed class Result<out T : Any> { | ||
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| data class Success<out T : Any>(val data: T) : Result<T>() | ||
| data class Error(val exception: Exception) : Result<Nothing>() | ||
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| override fun toString(): String { | ||
| return when (this) { | ||
| is Success<*> -> "Success[data=$data]" | ||
| is Error -> "Error[exception=$exception]" | ||
| } | ||
| } | ||
| } |
9 changes: 9 additions & 0 deletions
9
app/src/main/java/com/fankes/miui/notify/data/model/LoggedInUser.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| package com.fankes.miui.notify.data.model | ||
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| /** | ||
| * Data class that captures user information for logged in users retrieved from LoginRepository | ||
| */ | ||
| data class LoggedInUser( | ||
| val userId: String, | ||
| val displayName: String | ||
| ) |
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