Function run

src/fix.rs:199–476

Run the fix command and return the process exit code. Returns `0` when fixes were applied (or nothing to fix), `1` on error, `2` when `--dry-run` found fixable issues.

(options: FixOptions)

/// Returns `0` when fixes were applied (or nothing to fix), `1` on error,
/// `2` when `--dry-run` found fixable issues.
pub async fn run(options: FixOptions) -> i32 {
    let root = &options.workspace_root;

    if !root.join("composer.json").is_file() {
        eprintln!("Error: no composer.json found in {}", root.display());
        eprintln!("The fix command currently only supports single Composer projects.");
        return 1;
    }

    // ── Validate rules ──────────────────────────────────────────────
    let rule_errors = validate_rules(&options.rules, options.with_phpstan);
    if !rule_errors.is_empty() {
        for err in &rule_errors {
            eprintln!("Error: {err}");
        }
        return 1;
    }

    let native_rules = effective_native_rules(&options.rules);
    if native_rules.is_empty() && !options.with_phpstan {
        eprintln!("No applicable rules to run.");
        return 0;
    }

    // ── 1. Load config ──────────────────────────────────────────────
    let cfg = match config::load_config(root) {
        Ok(c) => c,
        Err(e) => {
            eprintln!("Warning: failed to load .phpantom.toml: {e}");
            config::Config::default()
        }
    };

    // ── 2. Index project ────────────────────────────────────────────
    let backend = Backend::new_headless();
    *backend.workspace_root().write() = Some(root.to_path_buf());
    *backend.config.lock() = cfg.clone();

    let composer_package = composer::read_composer_package(root);

    let php_version = cfg
        .php
        .version
        .as_deref()
        .and_then(crate::types::PhpVersion::from_composer_constraint)
        .unwrap_or_else(|| {
            composer_package
                .as_ref()
                .and_then(composer::detect_php_version_from_package)
                .unwrap_or_default()
        });
    backend.set_php_version(php_version);

    backend
        .init_single_project(root, php_version, composer_package, None)
        .await;

    // ── 3. Discover files ───────────────────────────────────────────