use std::path::Path;
use saccade_core::Entry;
use saccade_core::report::{Report, Status};
use serde_json::{Value, json};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct CliError {
pub code: &'static str,
pub message: String,
pub hint: String,
}
impl CliError {
pub fn new(code: &'static str, message: impl Into<String>) -> Self {
let message = message.into();
let fix = if message.contains("inside an input") || message.contains("inside a noise input")
{
"--out is inside an input dir: choose a sibling dir like ./saccade-report"
} else {
match code {
"feature_unavailable" => {
"rebuild with the required feature; inspect enabled modules with `saccade inspect capabilities`"
}
"config" => {
"check the named config setting or glob, correct its value, and rerun `saccade inspect config --entry NAME`"
}
"unsafe_path" => "choose a path inside the allowed root without symlink escapes",
"not_empty_out_dir" => {
"choose an empty --out directory or an existing saccade report directory"
}
"approve_mismatch" => {
"rerun the comparison, prepare --dry-run --out PLAN, review the exact decision, then apply --decisions PLAN/decision.json under explicit human authorization"
}
"nothing_compared" => {
"check the input paths and --entry filters; bootstrap with `saccade approve --report REPORT_JSON --all-failing`"
}
"io" => {
"check the named path exists, is readable or writable as needed, and images decode"
}
_ => {
"correct the named argument; run `saccade COMMAND --help` for its accepted values"
}
}
};
Self {
code,
hint: fix.to_owned(),
message,
}
}
pub fn usage(message: impl Into<String>) -> Self {
Self::new("usage", message)
}
pub fn io(message: impl Into<String>) -> Self {
Self::new("io", message)
}
pub fn value(&self) -> Value {
{
let mut value = crate::local_cmd::base_result("error");
value["execution"] = json!("error");
value["errors"] = json!([{"code":self.code,"message":self.message.chars().take(512).collect::<String>(),"required_feature":if self.code=="feature_unavailable" {["graphics","evaluation","workbench","prechecks","mcp","ai"].iter().find(|name|self.message.contains(**name)).copied()}else{None}}]);
value
}
}
}
impl std::fmt::Display for CliError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(&self.message)
}
}
impl From<String> for CliError {
fn from(message: String) -> Self {
Self::usage(message)
}
}
impl From<serde_json::Error> for CliError {
fn from(e: serde_json::Error) -> Self {
if e.to_string().starts_with("unknown field ") {
Self::new(
"version_skew",
format!(
"written by a newer producer; installed saccade does not support this field, upgrade: {e}"
),
)
} else {
Self::io(format!("JSON error: {e}"))
}
}
}
impl From<saccade_core::Error> for CliError {
fn from(e: saccade_core::Error) -> Self {
use saccade_core::Error;
let code = match e {
Error::TrialPlanChanged => "trial_plan_changed",
Error::Config(_) => "config",
Error::VersionSkew { .. } => "version_skew",
Error::WrongNoiseKind { .. } => "wrong_noise_kind",
Error::FeatureUnavailable { .. } => "feature_unavailable",
Error::NotEmptyOutDir(_) => "not_empty_out_dir",
_ => "io",
};
Self::new(code, e.to_string())
}
}
pub const DEFAULT_TOP_FAILING: usize = 5;
fn status_str(s: Status) -> &'static str {
match s {
Status::Pass => "pass",
Status::Fail => "fail",
Status::New => "new",
Status::Missing => "missing",
Status::Error => "error",
}
}
fn is_failing(report: &Report, e: &Entry) -> bool {
match e.status {
Status::Fail | Status::Error | Status::Missing => true,
Status::New => report.config.fail_on_new,
Status::Pass => false,
}
}
pub fn failing_entries(report: &Report) -> Vec<&Entry> {
let ratio = |e: &Entry| {
e.value.map(|v| {
if e.threshold > 0.0 {
v / e.threshold
} else {
f64::INFINITY
}
})
};
let mut v: Vec<&Entry> = report
.entries
.iter()
.filter(|e| is_failing(report, e))
.collect();
v.sort_by(|a, b| {
ratio(b)
.is_some()
.cmp(&ratio(a).is_some())
.then_with(|| ratio(b).unwrap_or(0.0).total_cmp(&ratio(a).unwrap_or(0.0)))
.then_with(|| a.name.cmp(&b.name))
});
v
}
pub fn round_floats(value: &mut Value) {
match value {
Value::Number(n) if n.is_f64() => {
if let Some(x) = n.as_f64() {
let rounded = format!("{x:.3e}")
.parse::<f64>()
.ok()
.and_then(serde_json::Number::from_f64);
if let Some(r) = rounded {
*n = r;
}
}
}
Value::Array(items) => items.iter_mut().for_each(round_floats),
Value::Object(map) => map.values_mut().for_each(round_floats),
_ => {}
}
}
pub fn result_value(
report: &Report,
report_json: &Path,
top: usize,
_explain_written: bool,
) -> Value {
let mut value = crate::local_cmd::base_result(
if report.config.mode == saccade_core::report::Mode::Identity {
"identity"
} else {
"compare"
},
);
let reference = crate::local_cmd::reference(report_json).ok();
value["artifact"] = reference.clone().unwrap_or(Value::Null);
value["mode"] = json!(report.config.mode);
value["verdict"] = json!(if report.is_regression() {
"regression"
} else {
"pass"
});
value["totals"] = json!(report.totals);
if let Some(perf) = &report.perf_diff {
value["performance"] = json!({"verdict":perf.verdict(),"comparability":perf.comparability,"repeat_qualification":perf.noise_comparability,"summary":perf.summary(3)});
if !report.is_regression()
&& perf.comparability == saccade_core::perf::Comparability::Rejected
{
value["overall"] = json!("performance_rejected");
value["verdict"] = json!("performance_rejected");
}
}
if report.perf_diff.is_some() || !report.perf_errors.is_empty() {
value["performance_action"] =
json!("saccade experiment ablate BASE CAPTURE --out DIR --json");
}
let equality = report.sample_equality();
value["sample_equality"] = json!(equality);
value["measurement"] = json!(
if report.config.mode == saccade_core::report::Mode::Identity {
match equality {
Some(true) => "identical",
Some(false) => "different",
_ => "unknown",
}
} else if report.is_regression() {
"regression"
} else {
"pass"
}
);
let validity = report.capture_validity();
value["validity"] = json!(validity.status);
let reasons = validity
.reasons
.iter()
.cloned()
.collect::<std::collections::BTreeSet<_>>()
.into_iter()
.collect::<Vec<_>>();
value["validity_reasons"] = crate::local_cmd::validity_summary(&reasons);
value["capture_validity"] = json!({"status":validity.status,"reasons":crate::local_cmd::validity_summary(&validity.reasons)});
let missing = report
.entries
.iter()
.flat_map(|e| {
["baseline", "capture"].into_iter().flat_map(move |side| {
["binary_sha256", "source_head"]
.into_iter()
.filter(move |field| {
!e.capture_provenance
.contains_key(&format!("{side}.{field}"))
})
.map(move |field| format!("{side}.{field}"))
})
})
.collect::<std::collections::BTreeSet<_>>();
if !missing.is_empty() {
value["validity_missing"] = json!({"keys":missing,"source":format!("--meta-name {} (Moss: --meta-name cost-card.json; binary.sha and build.commit)",report.config.meta.name)});
}
let undeclared = report
.entries
.iter()
.flat_map(|e| e.meta_diff.iter().map(|d| d.key.as_str()))
.filter(|key| !report.config.meta.declared.iter().any(|d| d == key))
.collect::<std::collections::BTreeSet<_>>();
if validity.status == saccade_core::meta::Validity::Unknown && !undeclared.is_empty() {
value["validity_guidance"] = json!({"undeclared_keys":undeclared.into_iter().take(8).collect::<Vec<_>>(),"action":"use --declare KEY for intentional differences, or --require-matching-meta to reject them"});
}
value["counts"]["validity_reasons"] = json!(validity.reasons.len());
value["scope"] = json!({"entries":report.config.entries,"ignore":report.config.ignore});
value["counts"] = json!({"total":report.totals.total,"pass":report.totals.pass,"fail":report.totals.fail,"error":report.totals.error,"missing":report.totals.missing,"new":report.totals.new});
value["counts"]["validity_reasons"] = json!(validity.reasons.len());
let local_changes = report
.entries
.iter()
.filter(|e| e.pass_with_local_change)
.collect::<Vec<_>>();
if !local_changes.is_empty() {
value["data"] = json!({"pass_with_local_change":local_changes.len(),"local_changes":local_changes.iter().take(3).map(|e|json!({"entry":e.name,"note":e.local_hotspot_note()})).collect::<Vec<_>>()});
}
let failing = failing_entries(report);
let summaries=failing.iter().take(top.min(5)).map(|e|json!({"entry_id":e.name,"measurement":if e.status==Status::Fail{"regression"}else{"unknown"},"error":e.error.as_ref().map(|s|crate::local_cmd::short(s,256))})).collect::<Vec<_>>();
value["entries"] = json!(summaries);
value["failing"]=json!(failing.iter().take(top.min(5)).map(|e|json!({"name":e.name,"status":status_str(e.status),"value":e.value,"threshold":e.threshold,"error":e.error.as_ref().map(|s|crate::local_cmd::short(s,256))})).collect::<Vec<_>>());
value["worst"] = failing.iter().find(|e| e.value.is_some()).map_or(
Value::Null,
|e| json!({"entry":e.name,"metric":e.metric_used,"value":e.value,"threshold":e.threshold}),
);
let report_path = saccade_core::paths::cwd(
report_json,
report
.baseline_dir
.as_deref()
.is_some_and(|p| Path::new(p).is_absolute()),
);
value["paths"] = json!({"report_json":report_path,"index_html":saccade_core::paths::cwd(&report_json.with_file_name("index.html"),report.baseline_dir.as_deref().is_some_and(|p|Path::new(p).is_absolute()))});
let omitted = failing.len().saturating_sub(top.min(5));
value["page"] = json!({"omitted":omitted,"next_cursor":crate::local_cmd::failing_cursor(report_json,top.min(5),failing.len()).ok().flatten()});
if let Ok(case) = crate::local_cmd::case_for_result(report, report_json)
&& (!failing.is_empty() || !local_changes.is_empty())
{
value["next_actions"] = json!([{
"id":"inspect-evidence","kind":"inspect_evidence","reason_code":if !local_changes.is_empty() {"pass_with_local_change"} else {"measured_change_or_missing_evidence"},"priority":1,"requires":[],"tool":"saccade_inspect",
"arguments":{"operation":"summary","artifact":reference},
"cli_argv":["saccade","inspect",report_path,"--json","--expected-case-id",case.case_id],"cwd":std::env::current_dir().ok().map(|p|saccade_core::paths::portable(&p)),"expected_case_id":case.case_id
}]);
}
if report.is_empty_run() {
value["limits"] = json!(["Empty comparisons are not evidence."]);
}
round_floats(&mut value);
match crate::local_cmd::bounded(value, 4096) {
Ok(mut value) => {
let shown = value["entries"].as_array().map_or(0, Vec::len);
value["page"]["next_cursor"] = json!(
crate::local_cmd::failing_cursor(report_json, shown, failing.len())
.ok()
.flatten()
);
value
}
Err(error) => error.value(),
}
}