generalize compile_project helper, add automatic target dir separation per contract

[dj8yfo]

to automate target dir separation per contract in the spirit of
near/cargo-near#292, one might replace

near-workspaces-rs/workspaces/src/cargo/mod.rs

Lines 8 to 42 in 187a992

	pub async fn compile_project(project_path: &str) -> crate::Result<Vec<u8>> {
	let project_path = std::fs::canonicalize(project_path).map_err(|e| match e.kind() {
	std::io::ErrorKind::NotFound => ErrorKind::Io.message(format!(
	"Incorrect file supplied to compile_project('{}')",
	project_path
	)),
	_ => ErrorKind::Io.custom(e),
	})?;
	// `no_abi` has become flipped true -> false
	let cargo_opts = cargo_near_build::BuildOpts {
	no_locked: true,
	manifest_path: Some(
	cargo_near_build::camino::Utf8PathBuf::from_path_buf(project_path.join("Cargo.toml"))
	.map_err(|error_path| {
	ErrorKind::Io.custom(format!(
	"Unable to construct UTF-8 path from: {}",
	error_path.display()
	))
	})?,
	),
	..Default::default()
	};
	let compile_artifact =
	cargo_near_build::build(cargo_opts).map_err(|e| ErrorKind::Io.custom(e))?;
	let file = compile_artifact
	.path
	.canonicalize()
	.map_err(|e| ErrorKind::Io.custom(e))?;
	tokio::fs::read(file)
	.await
	.map_err(|e| ErrorKind::Io.custom(e))
	}

with following

pub async fn compile_project(project_path: &str) -> Result<Vec<u8>, color_eyre::Report> {
    let project_path = std::fs::canonicalize(project_path).map_err(|e| match e.kind() {
        std::io::ErrorKind::NotFound => color_eyre::eyre::eyre!(
            "Incorrect file supplied to compile_project('{}')",
            project_path
        ),
        _ => color_eyre::eyre::eyre!("{:#?}", e),
    })?;

    let manifest_path =
        cargo_near_build::camino::Utf8PathBuf::from_path_buf(project_path.join("Cargo.toml"))
            .map_err(|error_path| {
            color_eyre::eyre::eyre!(
                "Unable to construct UTF-8 path from: {}",
                error_path.display()
            )
        })?;

    let build_opts = cargo_near_build::BuildOpts::builder()
        .no_locked(true)
        .manifest_path(manifest_path)
        .build();

    compile_project_with_opts(build_opts).await
}

pub async fn compile_project_with_opts(
    mut build_opts: cargo_near_build::BuildOpts,
) -> Result<Vec<u8>, color_eyre::Report> {
    if build_opts.override_cargo_target_dir.is_none() {

        // should run `cargo metadata --frozen --no-deps` when `no_locked` is false
        // should run `cargo metadata --offline --no-deps` when `no_locked` is true
        let (contract_crate_name, target_dir) = cargo_near_build::get_min_metadata(
            build_opts.manifest_path, build_opts.no_locked
        );

        let path_buf = {
            let pwd = Path::new(target_dir).canonicalize()?;
            let sub_target = pwd.join(format!("test-target-for-{contract_crate_name}"));
            sub_target
                .to_str()
                .ok_or_eyre(color_eyre::eyre::eyre!("non valid utf-8 path"))?
                .to_string()
        };

        build_opts.override_cargo_target_dir = Some(path_buf);
    }

    let compile_result =
        tokio::task::spawn_blocking(move || cargo_near_build::build(build_opts)).await?;
    let compile_artifact = compile_result?;

    let file = compile_artifact
        .path
        .canonicalize()
        .map_err(|e| color_eyre::eyre::eyre!("{:#?}", e))?;
    tokio::fs::read(file).await.map_err(|e| color_eyre::eyre::eyre!("{:#?}", e))
}

without losing much flexibility

[dj8yfo]

this needs adding cargo_near_build::get_min_metadata export to cargo_near_build

[dj8yfo]

color_eyre was added to snippet just to check if it mostly compiles, near_workspaces::Result should be used as it is now as return value