From 79084dbb9ed4eff902e7a2ca3110e0a50f72e9d1 Mon Sep 17 00:00:00 2001
From: andrewlalis <andrewlalisofficial@gmail.com>
Date: Tue, 10 Oct 2023 08:08:19 -0400
Subject: [PATCH] Added basic front-end for the search API for testing.

---
 .../d_package_search/DPackageSearch.java      |  8 +--
 .../d_package_search/WebApiRunner.java        |  8 +++
 .../impl/LucenePackageSearcher.java           |  2 +
 src/main/resources/index.html                 | 53 +++++++++++++++++++
 4 files changed, 67 insertions(+), 4 deletions(-)
 create mode 100644 src/main/resources/index.html

diff --git a/src/main/java/com/andrewlalis/d_package_search/DPackageSearch.java b/src/main/java/com/andrewlalis/d_package_search/DPackageSearch.java
index 39e106a..273f418 100644
--- a/src/main/java/com/andrewlalis/d_package_search/DPackageSearch.java
+++ b/src/main/java/com/andrewlalis/d_package_search/DPackageSearch.java
@@ -11,10 +11,10 @@ import java.util.ArrayList;
 public class DPackageSearch {
 	public static void main(String[] args) {
 		Path indexPath = Path.of("package-index");
-		startIndexerThread(new IndexGenerator(
-				new DubRegistryPackageFetcher(),
-				() -> new LucenePackageIndexer(indexPath)
-		));
+//		startIndexerThread(new IndexGenerator(
+//				new DubRegistryPackageFetcher(),
+//				() -> new LucenePackageIndexer(indexPath)
+//		));
 		new WebApiRunner(new LucenePackageSearcher(indexPath)).run();
 	}
 
diff --git a/src/main/java/com/andrewlalis/d_package_search/WebApiRunner.java b/src/main/java/com/andrewlalis/d_package_search/WebApiRunner.java
index a613f08..2406f56 100644
--- a/src/main/java/com/andrewlalis/d_package_search/WebApiRunner.java
+++ b/src/main/java/com/andrewlalis/d_package_search/WebApiRunner.java
@@ -7,6 +7,7 @@ import org.eclipse.jetty.server.*;
 import org.eclipse.jetty.util.Callback;
 import org.eclipse.jetty.util.thread.QueuedThreadPool;
 
+import java.io.IOException;
 import java.net.URLDecoder;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
@@ -63,6 +64,13 @@ public final class WebApiRunner extends Handler.Abstract implements Runnable {
                     byte[] responseBody = objectMapper.writeValueAsBytes(results);
                     response.write(true, ByteBuffer.wrap(responseBody), callback);
                 }
+            } else if (uri.getPath().equalsIgnoreCase("/index.html") || uri.getPath().equalsIgnoreCase("/")) {
+                try (var in = WebApiRunner.class.getClassLoader().getResourceAsStream("index.html")) {
+                    if (in == null) throw new IOException("Resource doesn't exist.");
+                    response.setStatus(HttpStatus.OK_200);
+                    response.getHeaders().add("Content-Type", "text/html; charset=utf-8");
+                    response.write(true, ByteBuffer.wrap(in.readAllBytes()), callback);
+                }
             } else {
                 response.setStatus(HttpStatus.NOT_FOUND_404);
             }
diff --git a/src/main/java/com/andrewlalis/d_package_search/impl/LucenePackageSearcher.java b/src/main/java/com/andrewlalis/d_package_search/impl/LucenePackageSearcher.java
index 8bc61fa..43e576d 100644
--- a/src/main/java/com/andrewlalis/d_package_search/impl/LucenePackageSearcher.java
+++ b/src/main/java/com/andrewlalis/d_package_search/impl/LucenePackageSearcher.java
@@ -55,12 +55,14 @@ public class LucenePackageSearcher implements PackageSearcher {
         BooleanQuery.Builder queryBuilder = new BooleanQuery.Builder();
         String[] searchTerms = queryText.toLowerCase().split("\\s+");
 
+        // We define a set of weighted fields that we will add prefix queries for.
         Map<String, Float> weightedFields = Map.of(
                 "name", 1f,
                 "description", 0.5f,
                 "readme", 0.25f
         );
 
+        // Only consider the first 5 search terms, and add a prefix query for each term for them.
         for (int i = 0; i < Math.min(5, searchTerms.length); i++) {
             for (var entry : weightedFields.entrySet()) {
                 String fieldName = entry.getKey();
diff --git a/src/main/resources/index.html b/src/main/resources/index.html
new file mode 100644
index 0000000..f3f7c46
--- /dev/null
+++ b/src/main/resources/index.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>D Package Search</title>
+</head>
+<body>
+
+<h1>D Package Search</h1>
+
+<p>
+    Use this site to search for D packages!
+</p>
+
+<input id="search-input" type="text" placeholder="Search for a package..."/>
+
+<div id="result-container"></div>
+
+<script>
+    async function fetchResults(query) {
+        const response = await fetch("/search?query=" + encodeURIComponent(query))
+        return await response.json();
+    }
+
+    function showResults(results) {
+        const container = document.getElementById("result-container");
+        container.innerHTML = "";
+        for (let i = 0; i < results.length; i++) {
+            const element = document.createElement("div");
+            const header = document.createElement("h3");
+            header.innerText = results[i].name;
+            element.appendChild(header);
+            const link = document.createElement("a");
+            link.href = results[i].url;
+            link.innerText = "Link to package";
+            element.appendChild(link);
+            container.appendChild(element);
+        }
+    }
+
+    const searchInput = document.getElementById("search-input");
+    searchInput.addEventListener("keyup", async () => {
+        const query = searchInput.value;
+        if (query.length < 1) {
+            showResults([]);
+            return;
+        }
+        const results = await fetchResults(query);
+        showResults(results);
+    })
+</script>
+</body>
+</html>
\ No newline at end of file