Replace build.rs with generate.rs

Add `generate.sh` script

Author: yukibtc

contrib/scripts/generate.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+RUST_DIR="${SCRIPT_DIR}/../../rust"
+
+cd "${RUST_DIR}"
+
+cargo run --bin generate --features codegen

contrib/scripts/precommit.sh

@@ -4,6 +4,7 @@ set -exuo pipefail
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
+"${DIR}/generate.sh"        # Generate dart output
 "${DIR}/check-fmt.sh"       # Format the code
 "${DIR}/check-crate.sh"     # Check crate
 "${DIR}/check-flutter.sh"   # Check flutter

justfile

@@ -4,9 +4,6 @@ set windows-shell := ["powershell.exe", "-NoLogo", "-Command"]
 default:
     @just --list
 
-build:
-    cd rust && cargo build
-
 precommit:
     @bash contrib/scripts/precommit.sh
 

rust/Cargo.lock

@@ -7,14 +7,21 @@ publish = false
 [lib]
 crate-type = ["cdylib", "staticlib"]
 
+[[bin]]
+name = "generate"
+path = "generate.rs"
+required-features = ["codegen"]
+
+[features]
+default = []
+codegen = ["dep:flutter_rust_bridge_codegen"]
+
 [dependencies]
 anyhow = "1.0"
 flutter_rust_bridge = "=2.0.0"
+flutter_rust_bridge_codegen = { version = "=2.0.0", optional = true }
 nostr-sdk  = { git = "https://github.com/rust-nostr/nostr", rev = "3b988fb13e0ea39c13dad116bd63333ea5d2bc36", default-features = false, features = ["all-nips", "tor"] }
 
-[build-dependencies]
-flutter_rust_bridge_codegen = "=2.0.0"
-
 [profile.release]
 opt-level = 'z'     # Optimize for size.
 lto = true          # Enable Link Time Optimization

rust/Cargo.toml

@@ -6,8 +6,6 @@ use lib_flutter_rust_bridge_codegen::codegen;
 use lib_flutter_rust_bridge_codegen::codegen::Config;
 
 fn main() {
-    println!("cargo:rerun-if-changed=src/api");
-
     // Execute code generator with auto-detected config
     codegen::generate(
         Config::from_config_file("../flutter_rust_bridge.yaml")