zhao-cli 0.5.3

Deterministic, offline change-review and CI gate for data transformation projects.
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//! The `zhao check` command: the breaking-change gate. Runs the shared
//! engine (see [`crate::engine`]) and maps the result to an exit code a CI
//! job can act on.

use std::process::ExitCode;

use crate::cli::CheckArgs;
use crate::engine::{build_report, fail, print_report, purge_run_logs, write_run_metadata};

/// Exit code for "no breaking Change found."
const EXIT_PASS: u8 = 0;
/// Exit code for "at least one Rule fired at `error` Severity."
const EXIT_BREAKING: u8 = 1;

/// Runs `zhao check` and returns the process exit code.
pub fn run(args: &CheckArgs) -> ExitCode {
    let output = match build_report(args) {
        Ok(output) => output,
        Err(message) => return fail(&message),
    };
    if let Err(message) = print_report(&output.report, &output.adapter, args) {
        return fail(&message);
    }
    write_run_metadata(&output, args);
    purge_run_logs(args, output.log_retention_days);

    ExitCode::from(if output.report.is_breaking() {
        EXIT_BREAKING
    } else {
        EXIT_PASS
    })
}