Feat(Logger): Support persistent logging

app/src/main/kotlin/top/fatweb/oxygen/toolbox/OxygenApplication.kt

@@ -2,11 +2,19 @@ package top.fatweb.oxygen.toolbox
 
 import android.app.Application
 import dagger.hilt.android.HiltAndroidApp
+import timber.log.Timber
 import top.fatweb.oxygen.toolbox.repository.userdata.UserDataRepository
+import top.fatweb.oxygen.toolbox.util.OxygenLogTree
 import javax.inject.Inject
 
 @HiltAndroidApp
 class OxygenApplication : Application() {
     @Inject
     lateinit var userDataRepository: UserDataRepository
+
+    override fun onCreate() {
+        super.onCreate()
+
+        Timber.plant(if (BuildConfig.DEBUG) Timber.DebugTree() else OxygenLogTree(this))
+    }
 }

app/src/main/kotlin/top/fatweb/oxygen/toolbox/di/NetworkModule.kt

@@ -11,6 +11,7 @@ import okhttp3.logging.HttpLoggingInterceptor
 import top.fatweb.oxygen.toolbox.BuildConfig
 import top.fatweb.oxygen.toolbox.data.network.OxygenNetworkDataSource
 import top.fatweb.oxygen.toolbox.network.retrofit.RetrofitOxygenNetwork
+import top.fatweb.oxygen.toolbox.util.HttpLogger
 import javax.inject.Singleton
 
 @Module
@@ -27,11 +28,10 @@ internal object NetworkModule {
     fun okHttpCallFactory(): Call.Factory =
         OkHttpClient.Builder()
             .addInterceptor(
-                HttpLoggingInterceptor()
+                HttpLoggingInterceptor(HttpLogger())
                     .apply {
-                        if (BuildConfig.DEBUG) {
-                            level = HttpLoggingInterceptor.Level.BODY
-                        }
+                        level =
+                            if (BuildConfig.DEBUG) HttpLoggingInterceptor.Level.BODY else HttpLoggingInterceptor.Level.BASIC
                     }
             )
             .build()

app/src/main/kotlin/top/fatweb/oxygen/toolbox/util/OxygenLogger.kt

@@ -0,0 +1,81 @@
+package top.fatweb.oxygen.toolbox.util
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.Log
+import androidx.annotation.IntDef
+import okhttp3.logging.HttpLoggingInterceptor
+import timber.log.Timber
+import java.io.File
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+class HttpLogger : HttpLoggingInterceptor.Logger {
+    override fun log(message: String) {
+        Timber.i(message)
+    }
+}
+
+class OxygenLogTree(
+    context: Context
+) : Timber.DebugTree() {
+    @IntDef(Log.ASSERT, Log.ERROR, Log.WARN, Log.INFO, Log.DEBUG, Log.VERBOSE)
+    @Retention(
+        AnnotationRetention.SOURCE
+    )
+    annotation class Level
+
+    private val fileNamePrefix = "oxygen_toolbox"
+    private val fileNamePostfix = ".log"
+    private val maxFileSize: Long = 10 * 1024 * 1024
+    private val dateFormat = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")
+    private val logDir = File(context.cacheDir, "logs")
+    private val logFile = File(logDir, "$fileNamePrefix$fileNamePostfix")
+
+    @SuppressLint("LogNotTimber")
+    override fun log(@Level priority: Int, tag: String?, message: String, t: Throwable?) {
+        checkFile()
+        try {
+            if (logFile.length() >= maxFileSize) {
+                rotateLogFile()
+            }
+            logFile.appendText(format(priority, tag, message, t))
+        } catch (e: Exception) {
+            Log.e("OxygenLogTree", "Error writing log message to file", e)
+        }
+    }
+
+    private fun checkFile() {
+        try {
+            if (!logDir.exists()) {
+                logDir.mkdirs()
+            }
+            logFile.createNewFile()
+        } catch (_: Exception) {}
+    }
+
+    private fun format(@Level priority: Int, tag: String?, message: String, t: Throwable?) = "${
+        LocalDateTime.now()
+            .format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS"))
+    }\t$tag\t${
+        when (priority) {
+            Log.ASSERT -> "Assert: "
+            Log.DEBUG -> "Debug: "
+            Log.ERROR -> "Error: "
+            Log.INFO -> "Info: "
+            Log.VERBOSE -> "Verbose: "
+            Log.WARN -> "Warn: "
+            else -> "Unknown: "
+        }
+    } $message${t?.run { " ${toString()}" } ?: ""}\n"
+
+    private fun rotateLogFile() {
+        logFile.renameTo(
+            File(
+                logFile.parent,
+                "$fileNamePrefix${LocalDateTime.now().format(dateFormat)}$fileNamePostfix"
+            )
+        )
+        logFile.createNewFile()
+    }
+}