feat(stanza): xep-0084: user avatar

3 files changed, 144 insertions, 0 deletions

diff --git a/stanza/src/xep_0084/data.rs b/stanza/src/xep_0084/data.rs
new file mode 100644
index 0000000..2a37df4
--- /dev/null
+++ b/stanza/src/xep_0084/data.rs
@@ -0,0 +1,30 @@
+use peanuts::{
+    element::{FromElement, IntoElement},
+    Element,
+};
+
+pub const XMLNS: &str = "urn:xmpp:avatar:data";
+
+#[derive(Debug, Clone)]
+pub struct Data(pub String);
+
+impl FromElement for Data {
+    fn from_element(mut element: peanuts::Element) -> peanuts::element::DeserializeResult<Self> {
+        element.check_name("data")?;
+        element.check_namespace(XMLNS)?;
+
+        Ok(Self(element.pop_value_opt()?.unwrap_or_default()))
+    }
+}
+
+impl IntoElement for Data {
+    fn builder(&self) -> peanuts::element::ElementBuilder {
+        let builder = Element::builder("data", Some(XMLNS));
+
+        if self.0.is_empty() {
+            builder
+        } else {
+            builder.push_text(self.0.clone())
+        }
+    }
+}
diff --git a/stanza/src/xep_0084/metadata.rs b/stanza/src/xep_0084/metadata.rs
new file mode 100644
index 0000000..c6a3fb4
--- /dev/null
+++ b/stanza/src/xep_0084/metadata.rs
@@ -0,0 +1,106 @@
+use peanuts::{
+    element::{FromElement, IntoElement},
+    Element,
+};
+
+pub const XMLNS: &str = "urn:xmpp:avatar:metadata";
+
+#[derive(Debug, Clone)]
+pub struct Metadata {
+    pub info: Vec<Info>,
+    pub pointers: Vec<Pointer>,
+}
+
+impl FromElement for Metadata {
+    fn from_element(mut element: Element) -> peanuts::element::DeserializeResult<Self> {
+        element.check_name("metadata")?;
+        element.check_namespace(XMLNS)?;
+
+        let info = element.pop_children()?;
+        let pointers = element.pop_children()?;
+
+        Ok(Self { info, pointers })
+    }
+}
+
+impl IntoElement for Metadata {
+    fn builder(&self) -> peanuts::element::ElementBuilder {
+        Element::builder("metadata", Some(XMLNS))
+            .push_children(self.info.clone())
+            .push_children(self.pointers.clone())
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Info {
+    pub bytes: u32,
+    pub height: Option<u16>,
+    pub id: String,
+    pub r#type: String,
+    pub url: Option<String>,
+    pub width: Option<u16>,
+}
+
+impl FromElement for Info {
+    fn from_element(mut element: Element) -> peanuts::element::DeserializeResult<Self> {
+        element.check_name("info")?;
+        element.check_namespace(XMLNS)?;
+
+        let bytes = element.attribute("bytes")?;
+        let height = element.attribute_opt("height")?;
+        let id = element.attribute("id")?;
+        let r#type = element.attribute("type")?;
+        let url = element.attribute_opt("url")?;
+        let width = element.attribute_opt("width")?;
+
+        Ok(Self {
+            bytes,
+            height,
+            id,
+            r#type,
+            url,
+            width,
+        })
+    }
+}
+
+impl IntoElement for Info {
+    fn builder(&self) -> peanuts::element::ElementBuilder {
+        Element::builder("info", Some(XMLNS))
+            .push_attribute("bytes", self.bytes)
+            .push_attribute_opt("height", self.height)
+            .push_attribute("id", self.id.clone())
+            .push_attribute("type", self.r#type.clone())
+            .push_attribute_opt("url", self.url.clone())
+            .push_attribute_opt("width", self.width)
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Pointer(pub PointerInner);
+
+impl FromElement for Pointer {
+    fn from_element(mut element: Element) -> peanuts::element::DeserializeResult<Self> {
+        element.check_name("pointer")?;
+        element.check_namespace(XMLNS)?;
+
+        Ok(Self(PointerInner::Unsupported(element.pop_child_one()?)))
+    }
+}
+
+impl IntoElement for Pointer {
+    fn builder(&self) -> peanuts::element::ElementBuilder {
+        let _builder = Element::builder("pointer", Some(XMLNS));
+
+        match &self.0 {
+            PointerInner::Unsupported(_element) => {
+                panic!("cannot serialize unsupported PointerInner")
+            }
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+pub enum PointerInner {
+    Unsupported(Element),
+}
diff --git a/stanza/src/xep_0084/mod.rs b/stanza/src/xep_0084/mod.rs
new file mode 100644
index 0000000..be7d5d7
--- /dev/null
+++ b/stanza/src/xep_0084/mod.rs
@@ -0,0 +1,8 @@
+pub use data::Data;
+pub use metadata::Info;
+pub use metadata::Metadata;
+pub use metadata::Pointer;
+pub use metadata::PointerInner;
+
+pub mod data;
+pub mod metadata;