feat: export hitta parser as a WASM component via wit-bindgen

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/providers/hitta/Cargo.toml

@@ -12,5 +12,8 @@ regex = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+wit-bindgen = "0.57"
+
 [dev-dependencies]
 insta = { version = "1.47", features = ["yaml"] }

crates/providers/hitta/src/component.rs

@@ -0,0 +1,56 @@
+use crate::parser;
+
+wit_bindgen::generate!({
+    world: "provider",
+    path: "../../../wit",
+});
+
+use exports::whoareyou::provider::lookup::{
+    Comment, Entry, Guest, LookupError, ProviderInfo, Request, Response,
+};
+
+struct Component;
+
+impl Guest for Component {
+    fn metadata() -> ProviderInfo {
+        ProviderInfo {
+            name: "hitta.se".to_string(),
+            version: env!("CARGO_PKG_VERSION").to_string(),
+        }
+    }
+
+    fn requests(number: String) -> Vec<Request> {
+        parser::request_urls(&number)
+            .into_iter()
+            .map(|url| Request { url })
+            .collect()
+    }
+
+    fn parse(_number: String, responses: Vec<Response>) -> Result<Entry, LookupError> {
+        let Some(first) = responses.first() else {
+            return Err(LookupError::ParseFailed(
+                "no responses provided".to_string(),
+            ));
+        };
+
+        match parser::parse(&first.body) {
+            Ok(entry) => Ok(Entry {
+                messages: entry.messages,
+                history: entry.history,
+                comments: entry
+                    .comments
+                    .into_iter()
+                    .map(|c| Comment {
+                        timestamp: c.timestamp,
+                        title: c.title,
+                        message: c.message,
+                    })
+                    .collect(),
+            }),
+            Err(parser::ParseError::NoData) => Err(LookupError::NoData),
+            Err(parser::ParseError::Failed(msg)) => Err(LookupError::ParseFailed(msg)),
+        }
+    }
+}
+
+export!(Component);

crates/providers/hitta/src/lib.rs

@@ -1,2 +1,4 @@
-// modules added as they are implemented
 pub mod parser;
+
+#[cfg(target_arch = "wasm32")]
+mod component;