From 03bc1fab18205b3cec263a060cb00a2c6216a793 Mon Sep 17 00:00:00 2001
From: Greg Heartsfield <scsibug@imap.cc>
Date: Wed, 24 Nov 2021 16:22:49 -0600
Subject: [PATCH] API for checking if subscription matches key

---
 src/event.rs        |  5 +++++
 src/subscription.rs | 18 ++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/src/event.rs b/src/event.rs
index 1bdb191..c0827c6 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -54,6 +54,11 @@ impl Event {
         let _e: Event = serde_json::from_str(json)?;
         Err(Error::EventParseFailed)
     }
+
+    // check if this event is valid (should be propagated, stored) based on signature.
+    pub fn is_valid(&self) -> bool {
+        false
+    }
 }
 
 #[cfg(test)]
diff --git a/src/subscription.rs b/src/subscription.rs
index c0f6e38..833d9de 100644
--- a/src/subscription.rs
+++ b/src/subscription.rs
@@ -1,4 +1,5 @@
 use crate::error::{Error, Result};
+use crate::event::Event;
 use serde::{Deserialize, Deserializer, Serialize};
 //use serde_json::json;
 //use serde_json::Result;
@@ -89,6 +90,23 @@ impl Subscription {
     pub fn get_filter_count(&self) -> usize {
         self.filters.len()
     }
+    pub fn interested_in_event(&self, event: &Event) -> bool {
+        // loop through every filter, and return true if any match this event.
+        for f in self.filters.iter() {
+            if f.interested_in_event(event) {
+                return true;
+            }
+        }
+    }
+}
+
+impl ReqFilter {
+    pub fn interested_in_event(&self, event: &Event) -> bool {
+        // determine if all populated fields in this filter match the provided event.
+
+        todo!();
+        true
+    }
 }
 
 #[cfg(test)]