From 8f6da5586401cb60cfb73b5c74a2152afa3ddbfb Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Mon, 17 Jul 2023 23:06:48 -0700
Subject: c@e frontend for the index page of ci.butactuallyin.space

---
 ci-wasm-frontend/src/main.rs | 145 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 ci-wasm-frontend/src/main.rs

(limited to 'ci-wasm-frontend/src/main.rs')

diff --git a/ci-wasm-frontend/src/main.rs b/ci-wasm-frontend/src/main.rs
new file mode 100644
index 0000000..cf96166
--- /dev/null
+++ b/ci-wasm-frontend/src/main.rs
@@ -0,0 +1,145 @@
+use fastly::{Request, Response};
+use fastly::kv_store::KVStore;
+use fastly::mime::Mime;
+
+use std::time::{Duration, Instant};
+use std::io::ErrorKind;
+
+use sqlite_vfs::{DatabaseHandle, LockKind, OpenKind, OpenOptions, Vfs, WalDisabled};
+
+pub fn main() {
+    eprintln!("version: {}", std::env::var("FASTLY_SERVICE_VERSION").unwrap());
+    let r = Request::from_client();
+    let start = std::time::Instant::now();
+
+    sqlite_vfs::register("memvfs", InMemVfs {}, true).unwrap();
+
+    let db = rusqlite::Connection::open_with_flags_and_vfs(
+        "state.db",
+        rusqlite::OpenFlags::SQLITE_OPEN_READ_WRITE,
+        "memvfs",
+    ).expect("can open db");
+
+    let resp_body: String = handle_req(db, &r).unwrap();
+
+    let mut resp = Response::new();
+    resp.set_body(resp_body);
+//    resp.set_content_type(Mime::HTML);
+// associated item not found in `Mime` ???
+    resp.set_header("content-type", "text/html");
+    resp.set_header("version", std::env::var("FASTLY_SERVICE_VERSION").unwrap());
+    resp.set_header("host", std::env::var("FASTLY_HOSTNAME").unwrap());
+    resp.set_header("render-time", start.elapsed().as_micros().to_string());
+
+    resp.send_to_client()
+}
+
+struct InMemVfsHandle {
+    bytes: Vec<u8>
+}
+
+impl DatabaseHandle for InMemVfsHandle {
+    type WalIndex = WalDisabled;
+
+    fn size(&self) -> Result<u64, std::io::Error> {
+        Ok(self.bytes.len() as u64)
+    }
+
+    fn read_exact_at(&mut self, buf: &mut [u8], offset: u64) -> Result<(), std::io::Error> {
+        buf.copy_from_slice(&self.bytes[offset as usize..][..buf.len()]);
+        Ok(())
+    }
+
+    fn write_all_at(&mut self, buf: &[u8], offset: u64) -> Result<(), std::io::Error> {
+        Err(std::io::Error::new(ErrorKind::Other, "no can do"))
+    }
+
+    fn sync(&mut self, data_only: bool) -> Result<(), std::io::Error> {
+        Ok(())
+    }
+
+    fn set_len(&mut self, size: u64) -> Result<(), std::io::Error> {
+        Err(std::io::Error::new(ErrorKind::Other, "no can do"))
+    }
+
+    fn lock(&mut self, lock: sqlite_vfs::LockKind) -> Result<bool, std::io::Error> {
+        Ok(true)
+    }
+
+    fn reserved(&mut self) -> Result<bool, std::io::Error> {
+        Ok(false)
+    }
+
+    fn current_lock(&self) -> Result<sqlite_vfs::LockKind, std::io::Error> {
+        Ok(sqlite_vfs::LockKind::None)
+
+    }
+
+    fn wal_index(&self, readonly: bool) -> Result<WalDisabled, std::io::Error> {
+        Ok(WalDisabled::default())
+    }
+
+    fn set_chunk_size(&self, chunk_size: usize) -> Result<(), std::io::Error> {
+        Err(std::io::Error::new(ErrorKind::Other, "no can do"))
+    }
+}
+
+struct InMemVfs;
+
+impl Vfs for InMemVfs {
+    type Handle = InMemVfsHandle;
+
+    fn open(&self, db: &str, opts: OpenOptions) -> Result<Self::Handle, std::io::Error> {
+        if opts.kind != OpenKind::MainDb {
+            return Err(std::io::Error::new(ErrorKind::Other, "no"));
+        }
+
+        let store = KVStore::open("ci-state")
+            .expect("can open ci-state")
+            .expect("ci-state exists");
+
+        let bytes = store.lookup_bytes(db).expect("lookup_works").expect("bytes exist");
+
+        Ok(InMemVfsHandle { bytes })
+    }
+
+    fn delete(&self, _db: &str) -> Result<(), std::io::Error> {
+        // do nothing for deletes
+        Err(std::io::Error::new(ErrorKind::Other, "no can do"))
+    }
+
+    fn exists(&self, db: &str) -> Result<bool, std::io::Error> {
+        Ok(false)
+    }
+
+    fn temporary_name(&self) -> String {
+        "temp name".to_string()
+    }
+
+    fn random(&self, buffer: &mut [i8]) {
+        rand::Rng::fill(&mut rand::thread_rng(), buffer);
+    }
+
+    fn sleep(&self, duration: Duration) -> Duration {
+        let now = Instant::now();
+        std::thread::sleep(duration);
+        now.elapsed()
+    }
+}
+
+pub fn handle_req(db: rusqlite::Connection, req: &Request) -> Result<String, String> {
+    use ci_lib_core::dbctx::DbCtx;
+    use std::sync::Arc;
+    use std::sync::Mutex;
+
+    let ctx = Arc::new(DbCtx {
+        config_path: "/".into(),
+        conn: Mutex::new(db),
+    });
+
+    if req.get_url().path() == "/" {
+        ci_lib_web::build_repo_index(&ctx)
+    } else {
+        Ok("a".to_string())
+    }
+}
-- 
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