yog 0.0.19

yog: the standalone server for litany loops — the world, the balls and the conversations, behind one wire
Documentation 
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//! [`super::super::build`]'s half of the view-model tests: enumeration, the
//! reused framing/attempts/token folds, forgiving meta parsing, and the §7.1
//! login affordance's routing. The on-demand drill-in is
//! [`detail`](super::detail), split off at §12's budget on the read seam §12
//! already names — `mod`+`detail` are the list and the drill-in.

use tempfile::tempdir;

use super::{AGENT, step_dir, write_file};
use crate::git_tree::{AgentState, Framing};
use crate::steps_view::build;

const COMPLETE: &[u8] = br#"{"type":"message_start"}
{"type":"usage","input_tokens":10,"output_tokens":5}
{"type":"finish","reason":"stop"}
{"type":"end"}
"#;
const FAILED: &[u8] = br#"{"type":"error","kind":"x"}
{"type":"end"}
"#;
const AUTH_FAILED: &[u8] = br#"{"type":"error","status":401,"message":"Unauthorized"}
{"type":"end"}
"#;

#[test]
fn build_summarizes_steps_in_order_reusing_framing_attempts_tokens() {
    let dir = tempdir().unwrap();
    let ws = dir.path();
    write_file(ws, "002", "response.json", FAILED);
    write_file(ws, "001", "response.json", COMPLETE);
    write_file(
        ws,
        "001",
        "meta.json",
        br#"{"commit":"abcdef1234567890","started_at":"t-start","ended_at":"t-end"}"#,
    );
    // A step with no response.json at all → killed, zero attempts/tokens.
    write_file(ws, "003", "meta.json", b"{}");
    // Non-step entries: wrong width, non-digits, and a file named like a seq
    // (a 3-digit name that is not a directory).
    write_file(ws, "0004", "meta.json", b"{}");
    std::fs::create_dir_all(step_dir(ws, "notaseq")).unwrap();
    std::fs::write(ws.join("steps").join(AGENT).join("006"), b"x").unwrap();

    let view = build(ws, AGENT, AgentState::Stopped);
    let seqs: Vec<&str> = view.steps.iter().map(|s| s.seq.as_str()).collect();
    assert_eq!(seqs, vec!["001", "002", "003"]);

    let s1 = &view.steps[0];
    assert_eq!(s1.framing, Framing::Complete);
    assert_eq!(s1.attempts, 1);
    assert_eq!(s1.tokens.total_tokens(), 15);
    assert_eq!(s1.commit.as_deref(), Some("abcdef1234567890"));
    assert_eq!(s1.started_at.as_deref(), Some("t-start"));
    assert_eq!(s1.ended_at.as_deref(), Some("t-end"));

    assert_eq!(view.steps[1].framing, Framing::Failed);
    assert_eq!(view.steps[2].framing, Framing::Killed);
    assert_eq!(view.steps[2].attempts, 0);
    // 003's meta is `{}` — every timestamp/commit field absent.
    assert_eq!(view.steps[2].commit, None);
}

#[test]
fn build_flags_auth_shaped_step_failures_for_the_login_affordance() {
    let dir = tempdir().unwrap();
    let ws = dir.path();
    write_file(ws, "001", "response.json", COMPLETE);
    write_file(ws, "002", "response.json", FAILED); // a generic failure
    write_file(ws, "003", "response.json", AUTH_FAILED); // a 401 auth failure
    let view = build(ws, AGENT, AgentState::Stopped);
    // Only the auth-shaped failure carries the Login affordance (§8.3 detection):
    // a complete step and a non-auth failure do not.
    assert!(!view.steps[0].auth_failed().offered());
    assert!(!view.steps[1].auth_failed().offered());
    assert!(view.steps[2].auth_failed().offered());
}

#[test]
fn build_missing_tree_is_empty() {
    let dir = tempdir().unwrap();
    assert_eq!(
        build(dir.path(), AGENT, AgentState::Stopped).steps,
        Vec::new()
    );
}

#[test]
fn build_forgiving_when_meta_is_malformed_or_absent() {
    let dir = tempdir().unwrap();
    let ws = dir.path();
    write_file(ws, "001", "response.json", COMPLETE);
    write_file(ws, "001", "meta.json", b"not json at all");
    let view = build(ws, AGENT, AgentState::Stopped);
    // Malformed meta → all meta-derived fields absent, framing still read.
    assert_eq!(view.steps[0].commit, None);
    assert_eq!(view.steps[0].started_at, None);
    assert_eq!(view.steps[0].framing, Framing::Complete);
}

/// The affordance is **routed**: an auth-shaped step is upgraded from
/// `Unrouted` to the provider row its model is bound to by the agent's own
/// governing config — the join that turns "log in" into "log in to this".
/// Driven over a real workspace repo, because the row comes out of git.
#[test]
fn an_auth_failed_step_names_the_row_its_governing_config_binds() {
    use crate::git_tree::tests::fixture::Fixture;
    use crate::login::auth::AuthFailure;
    use crate::test_support::TEMPLATE_PROVIDERS;

    const CONV: &str = "20260807T165806Z-1dc97a92";
    let fx = Fixture::new();
    fx.commit_other("providers.yaml", TEMPLATE_PROVIDERS);
    fx.build_agent(CONV, "what balls are open for yog?");

    let step = |seq: &str, response: &[u8], request: Option<&str>| {
        let dir = fx.path.join("steps").join(CONV).join(seq);
        std::fs::create_dir_all(&dir).unwrap();
        std::fs::write(dir.join("response.json"), response).unwrap();
        if let Some(model) = request {
            let body = format!(r#"{{"model":"{model}","max_tokens":4096}}"#);
            std::fs::write(dir.join("request.json"), body).unwrap();
        }
    };
    // 001 completes on the worker's model; 002 fails on it, auth-shaped.
    step("001", COMPLETE, Some("claude-sonnet-5"));
    step("002", AUTH_FAILED, Some("claude-sonnet-5"));

    let view = build(&fx.path, CONV, AgentState::Stopped);
    // A healthy step is never routed — there is nothing to log in to.
    assert_eq!(view.steps[0].auth_failed(), AuthFailure::No);
    // The failing one names the row TEMPLATE_PROVIDERS binds claude-sonnet-5 to.
    assert_eq!(
        view.steps[1].auth_failed(),
        AuthFailure::Row("anthropic".to_string())
    );
}

/// Three ways the row is not derivable, and all three are the same value: the
/// affordance still paints, unrouted, routing the operator to the pane where a
/// row is picked by hand. Absent data is a value, never a branch — and never a
/// guess.
#[test]
fn an_unroutable_auth_failure_still_offers_the_affordance() {
    use crate::git_tree::tests::fixture::Fixture;
    use crate::login::auth::AuthFailure;
    use crate::test_support::TEMPLATE_PROVIDERS;

    const CONV: &str = "20260807T165806Z-1dc97a92";
    let fx = Fixture::new();
    fx.commit_other("providers.yaml", TEMPLATE_PROVIDERS);
    fx.build_agent(CONV, "what balls are open for yog?");

    let step = |seq: &str, request: Option<&[u8]>| {
        let dir = fx.path.join("steps").join(CONV).join(seq);
        std::fs::create_dir_all(&dir).unwrap();
        std::fs::write(dir.join("response.json"), AUTH_FAILED).unwrap();
        if let Some(bytes) = request {
            std::fs::write(dir.join("request.json"), bytes).unwrap();
        }
    };
    // No request.json at all; unparseable bytes; a model no role binds.
    step("001", None);
    step("002", Some(b"not json"));
    step("003", Some(br#"{"max_tokens":4096}"#));
    step("004", Some(br#"{"model":"gpt-5.6-sol"}"#));

    let view = build(&fx.path, CONV, AgentState::Stopped);
    for step in &view.steps {
        assert_eq!(
            step.auth_failed(),
            AuthFailure::Unrouted,
            "step {}",
            step.seq
        );
    }
}