cimoxide-gen 0.3.2

use sha2::{Digest, Sha256};
use std::path::{Path, PathBuf};
use std::process::Command;

fn workspace_root() -> PathBuf {
    Path::new(env!("CARGO_MANIFEST_DIR"))
        .parent()
        .unwrap()
        .to_path_buf()
}

fn hash_dir(dir: &Path) -> String {
    let mut files: Vec<(String, Vec<u8>)> = Vec::new();
    collect(dir, dir, &mut files);
    files.sort_by(|a, b| a.0.cmp(&b.0));

    let mut h = Sha256::new();
    for (rel, content) in &files {
        h.update(rel.as_bytes());
        h.update(b"\0");
        h.update(content);
    }
    // sha2 0.11's `finalize()` returns an `Array` with no `LowerHex` impl; the byte string
    // is identical to what `format!("{:x}", ..)` produced on 0.10, so stored hashes still match.
    h.finalize().iter().map(|b| format!("{b:02x}")).collect()
}

fn collect(base: &Path, dir: &Path, out: &mut Vec<(String, Vec<u8>)>) {
    for entry in std::fs::read_dir(dir).unwrap().flatten() {
        let path = entry.path();
        if path.is_dir() {
            collect(base, &path, out);
        } else {
            let rel = path.strip_prefix(base).unwrap().to_string_lossy().into_owned();
            out.push((rel, std::fs::read(&path).unwrap()));
        }
    }
}

#[test]
fn cimstructs_codegen_stable() {
    let root = workspace_root();
    let out = Path::new(env!("CARGO_TARGET_TMPDIR")).join("cimstructs");
    let _ = std::fs::remove_dir_all(&out);
    std::fs::create_dir_all(&out).unwrap();

    let status = Command::new(env!("CARGO_BIN_EXE_cimgen"))
        .current_dir(&root)
        .arg("--output")
        .arg(&out)
        .status()
        .unwrap();
    assert!(status.success(), "cimgen exited with failure");

    let hash = hash_dir(&out);
    assert_eq!(hash, "7c3d0b88473f9501874d493c6eb8dcb9146f933e7e701d6bb67d83ef82c87bd9", "cimstructs output drifted — rerun to update hash");
}

#[test]
fn cimvalidation_codegen_stable() {
    let root = workspace_root();
    let structs_out = Path::new(env!("CARGO_TARGET_TMPDIR")).join("cimstructs-shacl");
    let shacl_out = Path::new(env!("CARGO_TARGET_TMPDIR")).join("cimvalidation");
    let _ = std::fs::remove_dir_all(&structs_out);
    let _ = std::fs::remove_dir_all(&shacl_out);
    std::fs::create_dir_all(&structs_out).unwrap();
    std::fs::create_dir_all(&shacl_out).unwrap();

    let shacl_glob = root.join(
        "application-profiles-library/CGMES/SHACL/*.ttl",
    );

    let status = Command::new(env!("CARGO_BIN_EXE_cimgen"))
        .current_dir(&root)
        .arg("--output")
        .arg(&structs_out)
        .arg("--shacl")
        .arg(&shacl_glob)
        .arg("--shacl-output")
        .arg(&shacl_out)
        .status()
        .unwrap();
    assert!(status.success(), "cimgen exited with failure");

    let hash = hash_dir(&shacl_out);
    assert_eq!(hash, "5369720ee910af3ab9f30d2e3ed3fd7395df87f6140bc2f2ebb7069d730a4e11", "cimvalidation output drifted — rerun to update hash");
}