Add auto-reload for frontend and backend

Also adds more just commands and improves the README docs.

.gitignore

@@ -3,3 +3,4 @@
 .env
 /static/js/**.js
 /static/js/js_bundles.txt
+.frontend-built

README.md

@@ -3,12 +3,32 @@
 My personalized news and blog aggregator. Taking back control over the
 algorithm. Pining for the days of Google Reader. An excuse to write more Rust.
 
-## Development Install
+## Development Instructions
 
-1. Install and run postgres.
-2. Create postgres user and database:
+### Prerequisites
 
+Install these requirements to get started developing crawlnicle.
+
+* [rust](https://www.rust-lang.org/)
+* [postgres](https://www.postgresql.org/)
+* [sqlx-cli](https://crates.io/crates/sqlx-cli)
+  * Only postgres needed. Install with:
+
+   ```bash
+   cargo install sqlx-cli --no-default-features --features native-tls,postgres
    ```
+
+* [just](https://github.com/casey/just#installation)
+* (optional) [cargo-watch](https://github.com/watchexec/cargo-watch#install) for
+auto-recompiling the server in development
+* (optional) [mold](https://github.com/rui314/mold#installation) for faster
+builds
+
+### First-time setup
+
+1. Create postgres user and database:
+
+   ```bash
    createuser crawlnicle
    createdb crawlnicle
    sudo -u postgres -i psql
@@ -24,10 +44,10 @@ postgres=# ALTER DATABASE crawlnicle OWNER TO crawlnicle;
    \password crawlnicle
    ```
 
-3. Save password somewhere safe and then and add a `.env` file to the project
+1. Save password somewhere safe and then and add a `.env` file to the project
    directory with the contents:
 
-```
+   ```env
    RUST_LOG=crawlnicle=debug,cli=debug,lib=debug,tower_http=debug,sqlx=debug
    HOST=127.0.0.1
    PORT=3000
@@ -37,18 +57,33 @@ TITLE=crawlnicle
    MAX_MEM_LOG_SIZE=1000000
    ```
 
-4. Install
-   [`sqlx_cli`](https://github.com/launchbadge/sqlx/tree/master/sqlx-cli) with
-   `cargo install sqlx-cli --no-default-features --features native-tls,postgres`
-5. Run `sqlx migrate run` which will run all the database migrations.
-6. Build the release binary by running `cargo build --release`.
-7. Run `./target/build/crawlnicle` to start the server.
+1. Run `just migrate` (or `sqlx migrate run`) which will run all the database
+   migrations.
+
+### Running in Development
+
+Run `just watch` to build and run the server while watching the source-files for
+changes and triggering a recompilation when modifications are made.
+
+The server also triggers the browser to reload the page when the server binary
+is updated and the server is restarted.
+
+It also separately watches the files in `frontend/` which will trigger a
+transpilation with `bun` and then rebuild the server binary so that it includes
+the new JS bundle names.
+
+Alternatively, you can just run `cargo run`.
+
+### Building for Production
+
+You can also build the binary in release mode for running in production with the
+`just build` command (or `cargo build --release`).
 
 ## Using the CLI
 
 This project also comes with a CLI binary which allows you to manipulate the
 database directly without needing to go through the REST API server. Run
-`./target/build/cli --help` to see all of the available commands.
+`cli --help` to see all of the available commands.
 
 ## Running jobs
 

build.rs

@@ -4,6 +4,7 @@ use std::path::Path;
 
 fn main() {
     println!("cargo:rerun-if-changed=migrations");
+    println!("cargo:rerun-if-changed=.frontend-built");
 
     let root_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
     let root_dir = Path::new(&root_dir);

justfile

@@ -1,4 +1,36 @@
 #!/usr/bin/env just --justfile
 
-build-frontend:
-  bun build frontend/index.ts --outdir ./static/js --entry-naming [name]-[hash].[ext]
+build: build-frontend
+  cargo build --release
+
+install-frontend:
+  bun install --cwd frontend
+
+clean-frontend:
+  rm -rf ./static/js/*
+
+build-frontend: install-frontend clean-frontend
+  bun build frontend/index.ts \
+    --outdir ./static/js \
+    --entry-naming [name]-[hash].[ext]
+
+watch-frontend: install-frontend
+  cargo watch -w frontend \
+    -s 'rm -rf ./static/js/*' \
+    -s 'bun build frontend/index.ts \
+    --outdir ./static/js \
+    --entry-naming [name]-[hash].[ext]' \
+    -s 'touch .frontend-built'
+
+watch-backend:
+  mold -run cargo watch \
+    --ignore 'logs/*' \
+    --ignore 'static/*' \
+    --ignore 'frontend/*' \
+    -x run
+
+watch:
+ ./watch.sh
+
+migrate:
+  sqlx migrate run

watch.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+
+trap "kill 0" SIGINT
+
+just watch-frontend & P1=$!
+P1=$!
+
+just watch-backend & P2=$!
+P2=$!
+
+wait $P1 $P2