Added AI interference to expression conditions

FAQ.md

@@ -2905,6 +2905,7 @@ The following extra functions are available:
 * *Jsoup()* (returns an array of selected strings; since version 1.2179)
 * *Size(array)* (returns the number of items in an array; since version 1.2179)
 * *knownContact()* (returns a boolean indicating that the from/reply-to address is in the Android address book or in the local contacts database)
+* *AI(prompt)* (run interference with the configured AI using the specified prompt, returning the result as a string; since version 1.2243)
 
 Example conditions:
 

app/src/main/java/eu/faircode/email/AI.java

@@ -26,6 +26,7 @@ import android.text.SpannableStringBuilder;
 import android.text.Spanned;
 import android.text.TextUtils;
 
+import androidx.annotation.NonNull;
 import androidx.preference.PreferenceManager;
 
 import org.json.JSONException;
@@ -78,6 +79,11 @@ public class AI {
             }
         }
 
+        return completeChat(context, id, body, reply, templatePrompt);
+    }
+
+    @NonNull
+    static Spanned completeChat(Context context, long id, CharSequence body, String reply, String prompt) throws JSONException, IOException {
         StringBuilder sb = new StringBuilder();
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         if (OpenAI.isAvailable(context)) {
@@ -94,9 +100,9 @@ public class AI {
                         new OpenAI.Content(OpenAI.CONTENT_TEXT, systemPrompt)}));
 
             if (reply == null) {
-                if (templatePrompt != null)
+                if (prompt != null)
                     messages.add(new OpenAI.Message(OpenAI.USER, new OpenAI.Content[]{
-                            new OpenAI.Content(OpenAI.CONTENT_TEXT, templatePrompt)}));
+                            new OpenAI.Content(OpenAI.CONTENT_TEXT, prompt)}));
                 if (body instanceof Spannable && multimodal)
                     messages.add(new OpenAI.Message(OpenAI.USER,
                             OpenAI.Content.get((Spannable) body, id, context)));
@@ -104,10 +110,10 @@ public class AI {
                     messages.add(new OpenAI.Message(OpenAI.USER, new OpenAI.Content[]{
                             new OpenAI.Content(OpenAI.CONTENT_TEXT, body.toString())}));
             } else {
-                if (templatePrompt == null && body.length() > 0)
+                if (prompt == null && body.length() > 0)
-                    templatePrompt = body.toString();
+                    prompt = body.toString();
                 messages.add(new OpenAI.Message(OpenAI.USER, new OpenAI.Content[]{
-                        new OpenAI.Content(OpenAI.CONTENT_TEXT, templatePrompt == null ? defaultPrompt : templatePrompt)}));
+                        new OpenAI.Content(OpenAI.CONTENT_TEXT, prompt == null ? defaultPrompt : prompt)}));
                 messages.add(new OpenAI.Message(OpenAI.USER, new OpenAI.Content[]{
                         new OpenAI.Content(OpenAI.CONTENT_TEXT, reply)}));
             }
@@ -132,14 +138,14 @@ public class AI {
             List<Gemini.Message> messages = new ArrayList<>();
 
             if (reply == null) {
-                if (templatePrompt != null)
+                if (prompt != null)
-                    messages.add(new Gemini.Message(Gemini.USER, new String[]{templatePrompt}));
+                    messages.add(new Gemini.Message(Gemini.USER, new String[]{prompt}));
                 messages.add(new Gemini.Message(Gemini.USER,
                         new String[]{Gemini.truncateParagraphs(body.toString())}));
             } else {
-                if (templatePrompt == null && body.length() > 0)
+                if (prompt == null && body.length() > 0)
-                    templatePrompt = body.toString();
+                    prompt = body.toString();
-                messages.add(new Gemini.Message(Gemini.USER, new String[]{templatePrompt == null ? defaultPrompt : templatePrompt}));
+                messages.add(new Gemini.Message(Gemini.USER, new String[]{prompt == null ? defaultPrompt : prompt}));
                 messages.add(new Gemini.Message(Gemini.USER, new String[]{reply}));
             }
 

app/src/main/java/eu/faircode/email/ExpressionHelper.java

@@ -115,6 +115,7 @@ public class ExpressionHelper {
         JsoupFunction fJsoup = new JsoupFunction(context, message);
         SizeFunction fSize = new SizeFunction();
         KnownFunction fKnown = new KnownFunction(context, message);
+        AIFunction fAI = new AIFunction(context, doc);
 
         ContainsOperator oContains = new ContainsOperator(false);
         ContainsOperator oMatches = new ContainsOperator(true);
@@ -130,6 +131,7 @@ public class ExpressionHelper {
         configuration.getFunctionDictionary().addFunction("Jsoup", fJsoup);
         configuration.getFunctionDictionary().addFunction("Size", fSize);
         configuration.getFunctionDictionary().addFunction("knownContact", fKnown);
+        configuration.getFunctionDictionary().addFunction("AI", fAI);
 
         configuration.getOperatorDictionary().addOperator("Contains", oContains);
         configuration.getOperatorDictionary().addOperator("Matches", oMatches);
@@ -179,6 +181,17 @@ public class ExpressionHelper {
             for (String variable : expression.getUsedVariables())
                 if ("text".equalsIgnoreCase(variable))
                     return true;
+
+            expression.validate();
+            for (ASTNode node : expression.getAllASTNodes()) {
+                Token token = node.getToken();
+                Log.i("EXPR token=" + token.getType() + ":" + token.getValue());
+                if (token.getType() == Token.TokenType.FUNCTION &&
+                        "AI".equalsIgnoreCase(token.getValue())) {
+                    Log.i("EXPR needs body");
+                    return true;
+                }
+            }
         } catch (Throwable ex) {
             Log.e("EXPR", ex);
         }
@@ -444,6 +457,36 @@ public class ExpressionHelper {
         }
     }
 
+    @FunctionParameter(name = "value")
+    public static class AIFunction extends AbstractFunction {
+        private final Context context;
+        private final Document doc;
+
+        AIFunction(Context context, Document doc) {
+            this.context = context;
+            this.doc = doc;
+        }
+
+        @Override
+        public EvaluationValue evaluate(
+                Expression expression, Token functionToken, EvaluationValue... parameterValues) {
+            String result = null;
+
+            try {
+                if (doc != null && parameterValues.length == 1) {
+                    String prompt = parameterValues[0].getStringValue();
+                    if (!TextUtils.isEmpty(prompt))
+                        result = AI.completeChat(context, -1L, doc.text(), null, prompt).toString();
+                }
+            } catch (Throwable ex) {
+                Log.w(ex);
+            }
+
+            Log.i("EXPR AI()=" + result);
+            return expression.convertValue(result);
+        }
+    }
+
     @InfixOperator(precedence = OPERATOR_PRECEDENCE_COMPARISON)
     public static class ContainsOperator extends AbstractOperator {
         private final boolean regex;

index.html

@@ -8,19 +8,10 @@
   <style>
     code{white-space: pre-wrap;}
     span.smallcaps{font-variant: small-caps;}
-    div.columns{display: flex; gap: min(4vw, 1.5em);}
+    span.underline{text-decoration: underline;}
-    div.column{flex: auto; overflow-x: auto;}
+    div.column{display: inline-block; vertical-align: top; width: 50%;}
     div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
-    /* The extra [class] is a hack that increases specificity enough to
+    ul.task-list{list-style: none;}
-       override a similar rule in reveal.js */
-    ul.task-list[class]{list-style: none;}
-    ul.task-list li input[type="checkbox"] {
-      font-size: inherit;
-      width: 0.8em;
-      margin: 0 0.8em 0.2em -1.6em;
-      vertical-align: middle;
-    }
-    .display.math{display: block; text-align: center; margin: 0.5rem auto;}
   </style>
   <link rel="shortcut icon" href="https://raw.githubusercontent.com/M66B/FairEmail/master/app/src/main/ic_launcher-web.png">
   <meta name="theme-color" content="#006db3">
@@ -1602,6 +1593,7 @@ X-Google-Original-From: Somebody &lt;somebody+extra@example.org&gt;</code></pre>
 <li><em>Jsoup()</em> (returns an array of selected strings; since version 1.2179)</li>
 <li><em>Size(array)</em> (returns the number of items in an array; since version 1.2179)</li>
 <li><em>knownContact()</em> (returns a boolean indicating that the from/reply-to address is in the Android address book or in the local contacts database)</li>
+<li><em>AI(prompt)</em> (run interference with the configured AI using the specified prompt, returning the result as a string; since version 1.2243)</li>
 </ul>
 <p>Example conditions:</p>
 <p><code>header("X-Mailer") contains "Open-Xchange" &amp;&amp; from matches ".*service@.*"</code></p>