//! What a tool or Podman writes on standard error reaches `brokerd`'s log escaped, one entry per
//! event: it cannot start a line of its own or forge a runbook pointer (M3b review finding 5).
//! Do not edit.

#[path = "support/build.rs"]
mod build;
#[path = "support/fake_podman.rs"]
mod fake_podman;

use brokerd::container::{CANNOT_START, COULD_NOT_RUN, Podman, UNEXPECTED};
use brokerd::policy::{Outcome, SessionState, decide};
use brokerd::runner::run;
use build::{fetch, grant, now, read, set};
use fake_podman::{Fake, Lines, serial};
use proto::{Mode, ToolRequest, ToolResponse};

const FORGED: &str = "real line\nbrokerd: forged\nsee docs/runbook.md#grants-invalid";

fn call(fake: &Fake, req: ToolRequest, grants: Vec<build::Build>, log: &Lines) -> ToolResponse {
    let podman = Podman::new(fake.runner(""), fake.dir.join("egress"), log.sink());
    let decision = match decide(req, &set(grants), SessionState::default(), now()) {
        Outcome::Allowed(d) => d,
        other => panic!("not allowed: {other:?}"),
    };
    run(decision, &podman)
}

/// No entry holds the forged text as lines of its own; the one that carries it has it escaped.
fn escaped(log: &Lines) {
    let entries = log.0.lock().unwrap().clone();
    for entry in &entries {
        assert!(!entry.contains("\nbrokerd: forged"), "raw: {entry:?}");
        assert!(
            !entry.contains("\nsee docs/runbook.md#grants-invalid"),
            "raw: {entry:?}"
        );
    }
    assert!(
        entries
            .iter()
            .any(|e| e.contains(r"real line\nbrokerd: forged")),
        "the error is still logged, escaped: {entries:?}"
    );
}

fn notes() -> Vec<build::Build> {
    vec![grant("notes", "read_file", Mode::Auto).paths(&["/n"])]
}

#[test]
fn a_tool_that_could_not_run() {
    let _s = serial();
    let fake = Fake::new(
        "log-2",
        &format!("cat > /dev/null; printf '{FORGED}' >&2; exit 2"),
    );
    let log = Lines::default();
    assert_eq!(
        call(&fake, read("/n/a"), notes(), &log),
        ToolResponse::Failed {
            message: COULD_NOT_RUN.to_string()
        }
    );
    escaped(&log);
}

#[test]
fn a_container_podman_could_not_start_keeps_its_one_real_pointer() {
    let _s = serial();
    let fake = Fake::new(
        "log-125",
        &format!("cat > /dev/null; printf '{FORGED}' >&2; exit 125"),
    );
    let log = Lines::default();
    assert_eq!(
        call(&fake, read("/n/a"), notes(), &log),
        ToolResponse::Failed {
            message: CANNOT_START.to_string()
        }
    );
    escaped(&log);
    let entries = log.0.lock().unwrap().clone();
    assert!(
        entries
            .iter()
            .any(|e| e.ends_with("\nsee docs/runbook.md#runner-unavailable")),
        "{entries:?}"
    );
}

#[test]
fn an_unexpected_ending() {
    let _s = serial();
    let fake = Fake::new(
        "log-3",
        &format!("cat > /dev/null; printf '{FORGED}' >&2; exit 3"),
    );
    let log = Lines::default();
    assert_eq!(
        call(&fake, read("/n/a"), notes(), &log),
        ToolResponse::Failed {
            message: UNEXPECTED.to_string()
        }
    );
    escaped(&log);
}

#[test]
fn a_proxy_podman_could_not_start() {
    let _s = serial();
    let body =
        format!("if [ \"$2\" = -d ]; then printf '{FORGED}' >&2; exit 125; fi; cat > /dev/null");
    let fake = Fake::new("log-egress", &body);
    let log = Lines::default();
    let got = call(
        &fake,
        fetch("https://example.com/"),
        vec![grant("web", "http_fetch", Mode::Auto).hosts(&["example.com"])],
        &log,
    );
    assert_eq!(
        got,
        ToolResponse::Failed {
            message: CANNOT_START.to_string()
        }
    );
    escaped(&log);
}