feat(xmpp): serialization of disco iqs

src/protos/xmpp/disco.rs

@@ -1,5 +1,6 @@
-use quick_xml::events::Event;
+use quick_xml::events::attributes::Attribute;
-use quick_xml::name::ResolveResult;
+use quick_xml::events::{BytesEnd, BytesStart, Event};
+use quick_xml::name::{QName, ResolveResult};
 
 use crate::prelude::*;
 use crate::util::xml::*;
@@ -79,6 +80,56 @@ impl FromXmlTag for InfoQuery {
     const NS: &'static str = XMLNS_INFO;
 }
 
+impl ToXml for InfoQuery {
+    fn serialize(&self, events: &mut Vec<Event<'static>>) {
+        let mut bytes = BytesStart::new(format!(r#"query xmlns="{}""#, XMLNS_INFO));
+        if let Some(node) = &self.node {
+            bytes.push_attribute(Attribute {
+                key: QName(b"node"),
+                value: node.as_bytes().into(),
+            });
+        }
+        let empty = self.feature.is_empty() && self.identity.is_empty();
+        if empty {
+            events.push(Event::Empty(bytes));
+        } else {
+            events.push(Event::Start(bytes));
+        }
+
+        for i in &self.identity {
+            let mut bytes = BytesStart::new("identity");
+            bytes.push_attribute(Attribute {
+                key: QName(b"category"),
+                value: i.category.as_bytes().into(),
+            });
+            if let Some(name) = &i.name {
+                bytes.push_attribute(Attribute {
+                    key: QName(b"name"),
+                    value: name.as_bytes().into(),
+                });
+            }
+            bytes.push_attribute(Attribute {
+                key: QName(b"type"),
+                value: i.r#type.as_bytes().into(),
+            });
+            events.push(Event::Empty(bytes));
+        }
+
+        for f in &self.feature {
+            let mut bytes = BytesStart::new("feature");
+            bytes.push_attribute(Attribute {
+                key: QName(b"var"),
+                value: f.var.as_bytes().into(),
+            });
+            events.push(Event::Empty(bytes));
+        }
+
+        if !empty {
+            events.push(Event::End(BytesEnd::new("query")));
+        }
+    }
+}
+
 #[derive(PartialEq, Eq, Debug)]
 pub struct Identity {
     category: String,
@@ -241,6 +292,43 @@ impl FromXmlTag for ItemQuery {
     const NS: &'static str = XMLNS_ITEM;
 }
 
+impl ToXml for ItemQuery {
+    fn serialize(&self, events: &mut Vec<Event<'static>>) {
+        let mut bytes = BytesStart::new(format!(r#"query xmlns="{}""#, XMLNS_ITEM));
+        let empty = self.item.is_empty();
+        if empty {
+            events.push(Event::Empty(bytes));
+        } else {
+            events.push(Event::Start(bytes));
+        }
+
+        for f in &self.item {
+            let mut bytes = BytesStart::new("item");
+            bytes.push_attribute(Attribute {
+                key: QName(b"jid"),
+                value: f.jid.to_string().into_bytes().into(),
+            });
+            if let Some(name) = &f.name {
+                bytes.push_attribute(Attribute {
+                    key: QName(b"name"),
+                    value: name.as_bytes().into(),
+                });
+            }
+            if let Some(node) = &f.node {
+                bytes.push_attribute(Attribute {
+                    key: QName(b"node"),
+                    value: node.as_bytes().into(),
+                });
+            }
+            events.push(Event::Empty(bytes));
+        }
+
+        if !empty {
+            events.push(Event::End(BytesEnd::new("query")));
+        }
+    }
+}
+
 #[derive(PartialEq, Eq, Debug)]
 pub struct Item {
     pub jid: super::bind::Jid,