book-reader/app/src/main/java/com/aryan/reader/BookImporter.kt
Aryan c6363f3061
Update readme (#3)
docs: Revamp README and add APK naming convention

This commit introduces a complete overhaul of the `README.md` to improve project presentation. Key changes include:
*   Adds a new header with the app icon and a Google Play badge.
*   Updates the feature graphic and includes a note distinguishing the OSS version from the Play Store version.
*   Refines the "Open Source Libraries" section to be more structured.
*   Moves the main preview image into the `docs` directory.

Additionally, the `app/build.gradle.kts` file is updated to configure a standardized naming convention for output APK files, including flavor, version, and build type.

* refactor copyright headers and fix README icon alignment

This commit introduces two main changes across the codebase:

The `spotless/copyright.kt` template have been updated for consistency:
*   The author name is simplified from "Episteme Authors" to "Episteme".
*   The contact email prefix is shortened from "Electronic mail:" to "mail:".

Second, the `README.md` file is adjusted to correct the vertical alignment of the app icon with the project title.
2026-02-25 21:30:28 +05:30

116 lines
No EOL
4.2 KiB
Kotlin

/*
* Episteme Reader - A native Android document reader.
* Copyright (C) 2026 Episteme
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* mail: epistemereader@gmail.com
*/
package com.aryan.reader
import android.content.Context
import android.net.Uri
import timber.log.Timber
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import java.io.File
import java.io.FileOutputStream
import java.io.InputStream
import java.util.UUID
import androidx.core.net.toUri
private const val BOOKS_DIR = "books"
class BookImporter(private val context: Context) {
private val booksDir = File(context.filesDir, BOOKS_DIR)
init {
if (!booksDir.exists()) {
booksDir.mkdirs()
}
}
/**
* Imports a book from a source URI into the app's private storage.
* @param sourceUri The content or file URI of the book to import.
* @return The [File] object for the imported book, or null if the import failed.
*/
suspend fun importBook(sourceUri: Uri): File? = withContext(Dispatchers.IO) {
var inputStream: InputStream? = null
var outputStream: FileOutputStream? = null
try {
val fileExtension = getFileExtension(sourceUri)
val destinationFileName = "${UUID.randomUUID()}.$fileExtension"
val destinationFile = File(booksDir, destinationFileName)
inputStream = context.contentResolver.openInputStream(sourceUri)
?: throw Exception("Could not open input stream for URI: $sourceUri")
outputStream = FileOutputStream(destinationFile)
inputStream.copyTo(outputStream)
Timber.i("Successfully imported book to: ${destinationFile.absolutePath}")
return@withContext destinationFile
} catch (e: Exception) {
Timber.e(e, "Failed to import book from URI: $sourceUri")
return@withContext null
} finally {
inputStream?.close()
outputStream?.close()
}
}
/**
* Deletes a book file from the app's private storage using its URI string.
* @param uriString The string representation of the file's URI.
* @return True if the file was successfully deleted, false otherwise.
*/
suspend fun deleteBookByUriString(uriString: String): Boolean = withContext(Dispatchers.IO) {
try {
val file = File(uriString.toUri().path ?: return@withContext false)
if (file.exists() && file.parentFile?.name == BOOKS_DIR) {
val deleted = file.delete()
if (deleted) {
Timber.i("Successfully deleted book file: ${file.path}")
} else {
Timber.w("Failed to delete book file: ${file.path}")
}
return@withContext deleted
}
} catch (e: Exception) {
Timber.e(e, "Error deleting book file for URI string: $uriString")
}
return@withContext false
}
fun createBookFile(fileNameWithExtension: String): File {
if (!booksDir.exists()) booksDir.mkdirs()
return File(booksDir, fileNameWithExtension)
}
private fun getFileExtension(uri: Uri): String {
val path = uri.path ?: return "tmp"
return File(path).extension.lowercase().ifEmpty {
// Fallback for URIs that don't have a clear extension in the path
when (context.contentResolver.getType(uri)) {
"application/pdf" -> "pdf"
"application/epub+zip" -> "epub"
else -> "tmp"
}
}
}
}