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package space.anity
import io.javalin.*
import io.javalin.core.util.*
import io.javalin.rendering.template.TemplateUtil.model
import java.io.*
import java.nio.charset.*
import java.nio.file.*
import java.text.*
import java.util.logging.*
class FileController {
private val log = Logger.getLogger(this.javaClass.name)
/**
* Crawls the requested file and either renders the directory view or the file view
*/
fun crawl(ctx: Context) {
try {
val usersFileHome = "$fileHome/${userHandler.getVerifiedUserId(ctx)}"
val firstParam = ctx.splat(0) ?: ""
val fileLocation = "$usersFileHome/$firstParam"
File(usersFileHome).mkdirs()
when {
ctx.queryParam("raw") != null -> ctx.result(FileInputStream(File(fileLocation)))
File(fileLocation).isDirectory -> {
val files = ArrayList<Array<String>>()
Files.list(Paths.get("$usersFileHome/$firstParam/")).forEach {
val filename = it.toString()
.drop(usersFileHome.length + (if (firstParam.isNotEmpty()) firstParam.length + 2 else 1))
val filePath = "$usersFileHome${it.toString().drop(usersFileHome.length)}"
files.add(addToFileListing(filePath, filename))
}
files.sortWith(compareBy { it.first() })
ctx.render(
"files.rocker.html", model(
"files", files,
"path", (if (firstParam.firstOrNull() == '/') firstParam.drop(1) else firstParam),
"isShared", false,
"ctx", ctx
)
)
}
isHumanReadable(File(fileLocation)) -> handleHumanReadableFile(fileLocation, ctx)
else -> {
ctx.contentType(Files.probeContentType(Paths.get(fileLocation)))
ctx.result(FileInputStream(File(fileLocation)))
}
}
} catch (_: Exception) {
throw NotFoundResponse("Error: File or directory does not exist.")
}
}
/**
* Gets directory size recursively
*/
private fun getDirectorySize(directory: File): Long {
var length: Long = 0
for (file in directory.listFiles()!!) {
length += if (file.isFile) file.length()
else getDirectorySize(file)
}
return length
}
/**
* Checks whether the file is binary or human-readable (text)
*/
private fun isHumanReadable(file: File): Boolean {
val input = FileInputStream(file)
var size = input.available()
if (size > 1000) size = 1000
val data = ByteArray(size)
input.read(data)
input.close()
val text = String(data, Charset.forName("ISO-8859-1"))
val replacedText = text.replace(
("[a-zA-Z0-9ßöäü\\.\\*!\"§\\$\\%&/()=\\?@~'#:,;\\+><\\|\\[\\]\\{\\}\\^°²³\\\\ \\n\\r\\t_\\-`´âêîôÂÊÔÎáéíóàèìòÁÉÍÓÀÈÌÒ©‰¢£¥€±¿»«¼½¾™ª]").toRegex(),
""
)
val d = (text.length - replacedText.length).toDouble() / text.length.toDouble()
return d > 0.95
}
/**
* Converts bytes to human-readable text like 100MiB
*/
private fun humanReadableBytes(bytes: Long): String {
val unit = 1024
if (bytes < unit) return "$bytes B"
val exp = (Math.log(bytes.toDouble()) / Math.log(unit.toDouble())).toInt()
val pre = "KMGTPE"[exp - 1] + "i"
return String.format("%.1f %sB", bytes / Math.pow(unit.toDouble(), exp.toDouble()), pre)
}
/**
* Saves multipart media data into requested directory
*/
fun upload(ctx: Context) {
val firstParam = ctx.splat(0) ?: ""
ctx.uploadedFiles("file").forEach { (_, content, name, _) ->
val path = if (firstParam.isEmpty()) name else "$firstParam/$name"
val userId = userHandler.getVerifiedUserId(ctx)
var addPath = ""
path.split("/").forEach {
addPath += "$it/"
if (!path.endsWith(it)) databaseController.addFile(addPath, userId, true)
}
if (databaseController.addFile(path, userId)) {
FileUtil.streamToFile(
content,
"$fileHome/$userId/$path"
)
}
}
}
/*
fun indexAll(ctx: Context) {
Files.list(Paths.get("$fileHome/${getVerifiedUserId(ctx)}").forEach {
// TODO: Add file indexing function
}
}
*/
/**
* Deletes the requested file
*/
fun delete(ctx: Context) { // TODO: Fix deleting of directories
val userId = userHandler.getVerifiedUserId(ctx)
if (userId > 0) {
val path = ctx.splat(0) ?: ""
File("$fileHome/$userId/$path").delete() // File.deleteRecursively() kind of "crashes" server but deletes folder :'(
databaseController.deleteFile(path, userId) // kind of works for deleting directories
}
}
/**
* Shares the requested file via the accessId
*/
fun share(ctx: Context) {
val userId = userHandler.getVerifiedUserId(ctx)
val shareType = ctx.queryParam("type").toString()
val firstParam = ctx.splat(0) ?: ""
if (userId > 0) {
val path = "$firstParam${if (shareType == "dir") "/" else ""}"
val accessId = databaseController.getAccessId(path, userId)
ctx.result("${ctx.host()}/shared?id=$accessId")
}
}
/**
* Renders a shared file
*/
fun renderShared(ctx: Context) {
val sharedFileData = databaseController.getSharedFile(ctx.queryParam("id").toString())
val fileLocation = sharedFileData.fileLocation
if (sharedFileData.userId > 0 && fileLocation.isNotEmpty()) {
val sharedFileLocation = "$fileHome/${sharedFileData.userId}/$fileLocation"
if (!sharedFileData.isDirectory) {
if (isHumanReadable(File(sharedFileLocation))) handleHumanReadableFile(sharedFileLocation, ctx)
else {
// TODO: Fix name of downloaded file ("shared")
ctx.contentType(Files.probeContentType(Paths.get(sharedFileLocation)))
ctx.result(FileInputStream(File(sharedFileLocation)))
}
} else {
val files = ArrayList<Array<String>>()
Files.list(Paths.get(sharedFileLocation)).forEach {
val filename = it.toString()
.drop(sharedFileLocation.length)
val filePath = "$sharedFileLocation$filename"
files.add(addToFileListing(filePath, filename))
}
files.sortWith(compareBy { it.first() })
ctx.render(
"files.rocker.html", model(
"files", files,
"path", (if (fileLocation.firstOrNull() == '/') fileLocation.drop(1) else fileLocation),
"isShared", true,
"ctx", ctx
)
)
}
} else {
log.info("Unknown file!")
}
}
/**
* Adds a file to the file array used in the file listing view
*/
private fun addToFileListing(filePath: String, filename: String): Array<String> {
val file = File(filePath)
val fileSize = if (file.isDirectory) getDirectorySize(file) else file.length()
return arrayOf(
// TODO: Clean up array responses
if (file.isDirectory) "$filename/" else filename,
humanReadableBytes(fileSize),
SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(file.lastModified()).toString(),
if (file.isDirectory) "true" else isHumanReadable(file).toString(),
file.isDirectory.toString(),
fileSize.toString(), // unformatted file size
file.lastModified().toString() // unformatted last modified date
)
}
/**
* Handles the rendering of human readable files
*/
private fun handleHumanReadableFile(filePath: String, ctx: Context) {
ctx.render(
"fileview.rocker.html", model(
"content", Files.readAllLines(
Paths.get(filePath),
Charsets.UTF_8
).joinToString(separator = "\n"),
"filename", File(filePath).name,
"extension", File(filePath).extension,
"ctx", ctx
)
)
}
/**
* Returns the access id of the directory
*/
fun handleSharedFile(ctx: Context) {
val filename = ctx.formParam("filename").toString()
val accessId = ctx.formParam("accessId").toString()
ctx.result(databaseController.getAccessIdOfDirectory(filename, accessId))
}
}
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