Replace upload image page with Kotlin version

[Sone.git] / src / main / kotlin / net / pterodactylus / sone / web / pages / UploadImagePage.kt

diff --git a/src/main/kotlin/net/pterodactylus/sone/web/pages/UploadImagePage.kt b/src/main/kotlin/net/pterodactylus/sone/web/pages/UploadImagePage.kt
new file mode 100644 (file)
index 0000000..774a179
--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/web/pages/UploadImagePage.kt
@@ -0,0 +1,72 @@
+package net.pterodactylus.sone.web.pages
+
+import freenet.support.api.Bucket
+import net.pterodactylus.sone.text.TextFilter
+import net.pterodactylus.sone.utils.emptyToNull
+import net.pterodactylus.sone.utils.headers
+import net.pterodactylus.sone.utils.isPOST
+import net.pterodactylus.sone.utils.parameters
+import net.pterodactylus.sone.utils.use
+import net.pterodactylus.sone.web.WebInterface
+import net.pterodactylus.sone.web.page.FreenetRequest
+import net.pterodactylus.util.template.Template
+import net.pterodactylus.util.template.TemplateContext
+import org.bouncycastle.asn1.x500.style.RFC4519Style.title
+import java.awt.image.BufferedImage
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import javax.imageio.ImageIO
+
+/**
+ * Page implementation that lets the user upload an image.
+ */
+class UploadImagePage(template: Template, webInterface: WebInterface):
+               SoneTemplatePage("uploadImage.html", template, "Page.UploadImage.Title", webInterface, true) {
+
+       override fun handleRequest(request: FreenetRequest, templateContext: TemplateContext) {
+               if (request.isPOST) {
+                       val parentAlbum = request.parameters["parent"]!!.let(webInterface.core::getAlbum) ?: throw RedirectException("noPermission.html")
+                       if (parentAlbum.sone != getCurrentSone(request.toadletContext)) {
+                               throw RedirectException("noPermission.html")
+                       }
+                       val title = request.parameters["title", 200].emptyToNull ?: throw RedirectException("emptyImageTitle.html")
+
+                       val uploadedFile = request.httpRequest.getUploadedFile("image")
+                       val bytes = uploadedFile.data.use { it.toByteArray() }
+                       val bufferedImage = bytes.toImage()
+                       if (bufferedImage == null) {
+                               templateContext["messages"] = webInterface.l10n.getString("Page.UploadImage.Error.InvalidImage")
+                               return
+                       }
+
+                       val temporaryImage = webInterface.core.createTemporaryImage(bytes.mimeType, bytes)
+                       webInterface.core.createImage(getCurrentSone(request.toadletContext), parentAlbum, temporaryImage).modify().apply {
+                               setWidth(bufferedImage.width)
+                               setHeight(bufferedImage.height)
+                               setTitle(title)
+                               setDescription(TextFilter.filter(request.headers["Host"], request.parameters["description", 4000]))
+                       }.update()
+                       throw RedirectException("imageBrowser.html?album=${parentAlbum.id}")
+               }
+       }
+
+       private fun Bucket.toByteArray(): ByteArray = ByteArrayOutputStream(size().toInt()).use { outputStream ->
+               inputStream.copyTo(outputStream)
+               outputStream.toByteArray()
+       }
+
+       private fun ByteArray.toImage(): BufferedImage? = ByteArrayInputStream(this).use {
+               ImageIO.read(it)
+       }
+
+       private val ByteArray.mimeType get() = ByteArrayInputStream(this).use {
+               ImageIO.createImageInputStream(it).use {
+                       ImageIO.getImageReaders(it).asSequence()
+                                       .firstOrNull()?.originatingProvider?.mimeTypes?.firstOrNull()
+                                       ?: UNKNOWN_MIME_TYPE
+               }
+       }
+
+}
+
+private const val UNKNOWN_MIME_TYPE = "application/octet-stream"