From 7f31c4477fa49c64bb817d5803350f4a9928f329 Mon Sep 17 00:00:00 2001
From: Zlatin Balevsky <zlatinb@gmail.com>
Date: Tue, 9 Jul 2019 11:47:55 +0100
Subject: [PATCH] matchers for keywords

---
 .../muwire/core/content/KeywordMatcher.groovy | 17 +++++++++++++++++
 .../com/muwire/core/content/Match.groovy      |  9 +++++++++
 .../com/muwire/core/content/Matcher.groovy    | 19 +++++++++++++++++++
 .../muwire/core/content/RegexMatcher.groovy   | 17 +++++++++++++++++
 4 files changed, 62 insertions(+)
 create mode 100644 core/src/main/groovy/com/muwire/core/content/KeywordMatcher.groovy
 create mode 100644 core/src/main/groovy/com/muwire/core/content/Match.groovy
 create mode 100644 core/src/main/groovy/com/muwire/core/content/Matcher.groovy
 create mode 100644 core/src/main/groovy/com/muwire/core/content/RegexMatcher.groovy

diff --git a/core/src/main/groovy/com/muwire/core/content/KeywordMatcher.groovy b/core/src/main/groovy/com/muwire/core/content/KeywordMatcher.groovy
new file mode 100644
index 00000000..d0e30a5b
--- /dev/null
+++ b/core/src/main/groovy/com/muwire/core/content/KeywordMatcher.groovy
@@ -0,0 +1,17 @@
+package com.muwire.core.content
+
+class KeywordMatcher extends Matcher {
+    private final String keyword
+    KeywordMatcher(String keyword) {
+        this.keyword = keyword
+    }
+    
+    @Override
+    protected boolean match(String[] searchTerms) {
+        searchTerms.each { 
+            if (keyword == it)
+                return true
+        }
+        false
+    }
+}
diff --git a/core/src/main/groovy/com/muwire/core/content/Match.groovy b/core/src/main/groovy/com/muwire/core/content/Match.groovy
new file mode 100644
index 00000000..68ae9cad
--- /dev/null
+++ b/core/src/main/groovy/com/muwire/core/content/Match.groovy
@@ -0,0 +1,9 @@
+package com.muwire.core.content
+
+import com.muwire.core.Persona
+
+class Match {
+    Persona persona
+    String [] keywords
+    long timestamp
+}
diff --git a/core/src/main/groovy/com/muwire/core/content/Matcher.groovy b/core/src/main/groovy/com/muwire/core/content/Matcher.groovy
new file mode 100644
index 00000000..9b324702
--- /dev/null
+++ b/core/src/main/groovy/com/muwire/core/content/Matcher.groovy
@@ -0,0 +1,19 @@
+package com.muwire.core.content
+
+import com.muwire.core.search.QueryEvent
+
+abstract class Matcher {
+    final Match [] matches = Collections.synchronizedList(new ArrayList<>())
+    
+    protected abstract boolean match(String []searchTerms);
+    
+    public void process(QueryEvent qe) {
+        def terms = qe.searchEvent.searchTerms
+        if (terms == null)
+            return
+        if (match(terms)) {
+            long now = System.currentTimeMillis()
+            matches << new Match(persona : qe.originator, keywords : terms, timestamp : now)
+        }
+    }
+}
diff --git a/core/src/main/groovy/com/muwire/core/content/RegexMatcher.groovy b/core/src/main/groovy/com/muwire/core/content/RegexMatcher.groovy
new file mode 100644
index 00000000..b9742f57
--- /dev/null
+++ b/core/src/main/groovy/com/muwire/core/content/RegexMatcher.groovy
@@ -0,0 +1,17 @@
+package com.muwire.core.content
+
+import java.util.regex.Pattern
+import java.util.stream.Collectors
+
+class RegexMatcher extends Matcher {
+    private final Pattern pattern
+    RegexMatcher(String pattern) {
+        this.pattern = Pattern.compile(pattern)
+    }
+    
+    @Override
+    protected boolean match(String[] keywords) {
+        String combined = keywords.join(" ")
+        return pattern.matcher(combined).find()
+    }
+}