aquatic_http protocol: refactor into more submodules, other fixes

aquatic_http/src/lib/protocol/common.rs

@@ -0,0 +1,56 @@
+use std::str::FromStr;
+
+use serde::Serialize;
+
+use super::utils::*;
+
+
+#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize)]
+#[serde(transparent)]
+pub struct PeerId(
+    #[serde(
+        serialize_with = "serialize_20_bytes",
+    )]
+    pub [u8; 20]
+);
+
+
+#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize)]
+#[serde(transparent)]
+pub struct InfoHash(
+    #[serde(
+        serialize_with = "serialize_20_bytes",
+    )]
+    pub [u8; 20]
+);
+
+
+#[derive(Debug, Clone)]
+pub enum AnnounceEvent {
+    Started,
+    Stopped,
+    Completed,
+    Empty
+}
+
+
+impl Default for AnnounceEvent {
+    fn default() -> Self {
+        Self::Empty
+    }
+}
+
+
+impl FromStr for AnnounceEvent {
+    type Err = String;
+
+    fn from_str(value: &str) -> std::result::Result<Self, String> {
+        match value {
+            "started" => Ok(Self::Started),
+            "stopped" => Ok(Self::Stopped),
+            "completed" => Ok(Self::Completed),
+            "empty" => Ok(Self::Empty),
+            value => Err(format!("Unknown value: {}", value))
+        }
+    }
+}