Code refactoring

[meviz.git] / src / main / java / eu / svjatoslav / meviz / htmlindexer / indexer / WebIndexer.java

diff --git a/src/main/java/eu/svjatoslav/meviz/htmlindexer/indexer/WebIndexer.java b/src/main/java/eu/svjatoslav/meviz/htmlindexer/indexer/WebIndexer.java
new file mode 100644 (file)
index 0000000..966d10f
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/meviz/htmlindexer/indexer/WebIndexer.java
@@ -0,0 +1,125 @@
+package eu.svjatoslav.meviz.htmlindexer.indexer;
+
+import eu.svjatoslav.meviz.htmlindexer.Constants;
+import eu.svjatoslav.meviz.htmlindexer.IndexingContext;
+import eu.svjatoslav.meviz.htmlindexer.layouts.Layout;
+import eu.svjatoslav.meviz.htmlindexer.Utils;
+import eu.svjatoslav.meviz.htmlindexer.layouts.MixedLayout;
+import eu.svjatoslav.meviz.htmlindexer.metadata.Dimension;
+import eu.svjatoslav.meviz.htmlindexer.metadata.DirectoryMetadata;
+import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.AbstractFile;
+import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.Picture;
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.UnsupportedEncodingException;
+import java.net.URL;
+import java.util.List;
+
+public class WebIndexer extends AbstractIndexer {
+
+    private static final int METADATA_LOAD_TRY_COUNT = 10;
+    private final String globalPrefix;
+    private final String jspPath;
+
+    public WebIndexer(final String globalPrefix, final String jspPath) {
+        this.globalPrefix = globalPrefix;
+        this.jspPath = jspPath;
+    }
+
+    @Override
+    public void compileHtml(final Layout layout,
+                            final DirectoryMetadata directory)
+            throws UnsupportedEncodingException {
+        super.compileHtml(layout, directory);
+    }
+
+    @Override
+    public String getDirectoryUrl(final AbstractFile directory,
+                                  final IndexingContext context) {
+        return jspPath + context.getLocalUrl() + "/" + directory.fileName;
+    }
+
+    public String getHtml(String requestPath) throws
+            IOException, ClassNotFoundException {
+
+        if (requestPath == null)
+            requestPath = "";
+
+        if (requestPath.equals("/"))
+            requestPath = "";
+
+        final MixedLayout layout = new MixedLayout();
+        final IndexingContext context = new IndexingContext(globalPrefix,
+                requestPath);
+        layout.init("Photos", context.getLocalPathComponents(), this, context);
+
+        final DirectoryMetadata directory = getMetadataForPath(requestPath);
+
+        compileHtml(layout, directory);
+
+        return layout.getHtml(false, false, directory);
+    }
+
+    private DirectoryMetadata getMetadataForPath(final String requestPath)
+            throws ClassNotFoundException, IOException {
+
+        final String urlString = globalPrefix + Utils.urlEncode(requestPath) + "/.thumbnails/metadata_6.dat";
+
+        for (int i = 0; true; i++)
+            try {
+                return attemptDirectoryMetadataDownload(urlString);
+            } catch (final IOException e) {
+                if (i > METADATA_LOAD_TRY_COUNT) throw e;
+            }
+    }
+
+    private DirectoryMetadata attemptDirectoryMetadataDownload(String urlString) throws IOException, ClassNotFoundException {
+        final BufferedInputStream inputStream = new BufferedInputStream(new URL(
+                urlString).openStream());
+
+        final ObjectInputStream objectInputStream = new ObjectInputStream(inputStream);
+        final DirectoryMetadata directory = (DirectoryMetadata) objectInputStream
+                .readObject();
+        inputStream.close();
+
+        return directory;
+    }
+
+    @Override
+    public String getParentDirectoryUrl(final IndexingContext context) {
+        final StringBuilder result = new StringBuilder();
+
+        result.append(jspPath);
+
+        final List<String> components = context.getLocalPathComponents();
+
+        for (final String pathComponent : components.subList(0,
+                components.size() - 1)) {
+            result.append("/");
+            result.append(pathComponent);
+        }
+
+        return result.toString();
+    }
+
+    @Override
+    public String getThumbnailUrl(final Picture picture,
+                                  final Dimension desiredDimension, final IndexingContext context) {
+
+        // in case thumbnail size was equal to original, then return original
+        // file path
+        if (picture.getDimensions().equals(desiredDimension))
+            return context.getGlobalUrl() + context.getLocalUrl() + "/"
+                    + picture.fileName;
+
+        final String thumbnailFileName = picture
+                .getRelativeThumbnailFileName(desiredDimension);
+
+        return context.getGlobalUrl() + context.getLocalUrl() + "/"
+                + Constants.THUMBNAILS_DIRECTORY_NAME + "/"
+                + Utils.urlEncode(thumbnailFileName);
+    }
+
+}