fallow_engine/health/
mod.rs

1//! Command-neutral health execution options and runners.
2
3use std::path::{Path, PathBuf};
4
5use fallow_config::{EmailMode, WorkspaceInfo};
6use fallow_output::{
7    DiffIndex, EffortEstimate, FindingSeverity, GroupByMode, RuntimeCoverageReport,
8    RuntimeCoverageWatermark,
9};
10use fallow_types::output_format::OutputFormat;
11use fallow_types::path_util::is_absolute_path_any_platform;
12use fallow_types::results::AnalysisResults;
13use rustc_hash::{FxHashMap, FxHashSet};
14
15use crate::module_graph::RetainedModuleGraph;
16use crate::results::DeadCodeAnalysisArtifacts;
17
18mod actions;
19mod analysis_data;
20mod assembly;
21mod baseline_io;
22mod branching;
23pub use branching::{BranchingByFile, branching_by_file};
24mod churn_file;
25mod component_rollup;
26mod core_pipeline;
27mod coverage_gaps;
28mod coverage_intelligence;
29mod coverage_settings;
30mod css_analytics;
31mod derived_sections;
32mod execute;
33mod file_scores;
34mod filters;
35mod finding_sort;
36mod findings;
37mod findings_pipeline;
38mod framework_health;
39mod grouping;
40mod health_error;
41mod hotspots;
42mod ignore;
43mod large_functions;
44mod output_build;
45pub mod ownership;
46mod package_json;
47mod pipeline;
48mod react_hooks;
49mod result;
50mod runner;
51mod runtime_filter;
52mod runtime_sections;
53mod scope;
54/// File health scoring: maintainability index, CRAP risk, triage concern
55/// classification, and Istanbul coverage ingestion.
56pub mod scoring;
57pub mod styling_score;
58mod tailwind_theme;
59mod targets;
60mod threshold_overrides;
61mod timings;
62mod vital_data;
63mod vital_signs_scope;
64
65pub use crate::results::HealthAnalysisResult;
66pub use churn_file::validate_health_churn_file;
67pub use css_analytics::StylingAnalysisArtifacts;
68use derived_sections::{
69    HealthDerivedSectionInput, HealthDerivedSections, prepare_health_derived_sections,
70};
71use execute::HealthOptions;
72pub use execute::execute_health_inner;
73use file_scores::{
74    FileScoresAndChurnInput, compute_file_scores_and_churn, health_file_scores_slice,
75    print_slow_churn_note,
76};
77use finding_sort::sort_findings;
78pub use health_error::HealthError;
79pub use hotspots::{
80    TargetChurnEvidence, TargetChurnOptions, TargetChurnOutcome, analyze_target_churn,
81};
82pub use pipeline::{HealthPipelineInputs, HealthScopeInputs};
83pub use runner::{
84    run_ungrouped_health, run_ungrouped_health_with_session,
85    run_ungrouped_health_with_session_artifacts,
86};
87use vital_data::{HealthVitalData, HealthVitalDataInput, prepare_health_vital_data};
88use vital_signs_scope::{
89    SubsetFilter, VitalSignsAndCountsInput, apply_duplication_metrics,
90    compute_vital_signs_and_counts,
91};
92
93pub(crate) fn build_styling_analysis_artifacts(
94    files: &[crate::discover::DiscoveredFile],
95    modules: &[crate::source::ModuleInfo],
96    config: &fallow_config::ResolvedConfig,
97) -> StylingAnalysisArtifacts {
98    css_analytics::build_styling_analysis_artifacts(files, modules, config)
99}
100
101/// Build health shared parse data from retained dead-code artifacts.
102#[must_use]
103pub fn shared_parse_data_from_artifacts(
104    results: &AnalysisResults,
105    graph: Option<RetainedModuleGraph>,
106    modules: Option<Vec<crate::source::ModuleInfo>>,
107    files: Option<Vec<crate::discover::DiscoveredFile>>,
108    workspaces: Vec<WorkspaceInfo>,
109    script_used_packages: impl IntoIterator<Item = String>,
110) -> Option<HealthSharedParseData> {
111    let (Some(modules), Some(files)) = (modules, files) else {
112        return None;
113    };
114    let script_used_packages: FxHashSet<String> = script_used_packages.into_iter().collect();
115    let analysis_output = graph.map(|graph| DeadCodeAnalysisArtifacts {
116        results: results.clone(),
117        timings: None,
118        graph: Some(graph),
119        modules: None,
120        files: None,
121        script_used_packages: script_used_packages.clone(),
122        file_hashes: FxHashMap::default(),
123    });
124    Some(HealthSharedParseData {
125        files,
126        modules,
127        dead_code_results: Some(results.clone()),
128        workspaces,
129        analysis_output,
130    })
131}
132
133/// Return true when health sections will need dead-code analysis artifacts.
134///
135/// Callers that already have a session and parsed modules can precompute these
136/// artifacts once, then pass them into [`HealthPipelineInputs`] to avoid a
137/// second graph and dead-code analysis inside the health pipeline.
138#[must_use]
139pub fn should_precompute_dead_code_analysis(
140    options: &HealthExecutionOptions<'_>,
141    config: &fallow_config::ResolvedConfig,
142) -> bool {
143    let max_crap = options
144        .thresholds
145        .max_crap
146        .unwrap_or(config.health.max_crap);
147    options.file_scores
148        || options.coverage_gaps
149        || options.config_activates_coverage_gaps
150        || options.hotspots
151        || options.targets
152        || options.force_full
153        || max_crap > 0.0
154        || options.runtime_coverage.is_some()
155}
156
157/// Command-neutral grouping resolver contract for `--group-by` health output.
158///
159/// The CLI owns the concrete resolver (CODEOWNERS parsing, package discovery);
160/// the engine grouping pass only needs these three read operations, so it stays
161/// generic over the resolver instead of depending on the CLI type.
162pub trait HealthGroupResolver {
163    /// Stable label for the active grouping mode (`owner` / `directory` / ...).
164    fn mode_label(&self) -> &'static str;
165    /// Resolve a repo-relative path to its group key and the matching rule.
166    fn resolve_with_rule(&self, rel_path: &Path) -> (String, Option<String>);
167    /// Section owners for the group a path belongs to, when known.
168    fn section_owners_of(&self, rel_path: &Path) -> Option<&[String]>;
169}
170
171/// Placeholder grouping resolver for runs without `--group-by` (the programmatic
172/// API path). Constructed only as `None`, so its methods are never invoked.
173#[derive(Debug, Clone, Copy)]
174pub enum NoGroupResolver {}
175
176#[expect(
177    clippy::uninhabited_references,
178    reason = "NoGroupResolver is uninhabited; these methods are unreachable and exist only to satisfy the trait bound for the group-less programmatic path"
179)]
180impl HealthGroupResolver for NoGroupResolver {
181    fn mode_label(&self) -> &'static str {
182        match *self {}
183    }
184    fn resolve_with_rule(&self, _rel_path: &Path) -> (String, Option<String>) {
185        match *self {}
186    }
187    fn section_owners_of(&self, _rel_path: &Path) -> Option<&[String]> {
188        match *self {}
189    }
190}
191
192/// Runtime coverage analysis seam.
193///
194/// Runtime coverage execution drives the closed-source `fallow-cov` sidecar
195/// (license verification, subprocess spawning), which stays in the CLI. The
196/// engine calls this callback only when [`HealthExecutionOptions::runtime_coverage`]
197/// is set, so the default and programmatic paths never touch it.
198///
199/// The seam prints its own errors (license / sidecar diagnostics), so it returns
200/// the already-printed exit code as a bare `u8`. The engine wraps that code in
201/// [`HealthError::Printed`] so the CLI boundary honors the code without emitting
202/// a second error document.
203pub type RuntimeCoverageAnalyzer<'a> = dyn Fn(&RuntimeCoverageOptions, RuntimeCoverageSeamInput<'_>) -> Result<RuntimeCoverageReport, u8>
204    + 'a;
205
206/// Inputs the runtime coverage seam needs from the analysis core.
207pub struct RuntimeCoverageSeamInput<'a> {
208    /// Project root the analysis ran against.
209    pub root: &'a Path,
210    /// Parsed modules from the extract phase, for correlating trace symbols.
211    pub modules: &'a [fallow_types::extract::ModuleInfo],
212    /// Retained dead-code artifacts (graph plus results) the sidecar joins
213    /// runtime traces against.
214    pub analysis_output: &'a DeadCodeAnalysisArtifacts,
215    /// Parsed Istanbul test coverage when the run also supplied it.
216    pub istanbul_coverage: Option<&'a scoring::IstanbulCoverage>,
217    /// `FileId` to absolute-path lookup for resolving finding locations.
218    pub file_paths: &'a rustc_hash::FxHashMap<fallow_types::discover::FileId, &'a PathBuf>,
219    /// Compiled ignore globs; matching files are excluded from verdicts.
220    pub ignore_set: &'a globset::GlobSet,
221    /// Diff scope when the run is limited to changed files.
222    pub changed_files: Option<&'a rustc_hash::FxHashSet<PathBuf>>,
223    /// Workspace roots when the run is workspace-scoped.
224    pub ws_roots: Option<&'a [PathBuf]>,
225    /// Cap on rendered findings, forwarded from `--top`.
226    pub top: Option<usize>,
227    /// CODEOWNERS override path for ownership attribution on findings.
228    pub codeowners_path: Option<&'a str>,
229    /// Suppress progress notes on stderr.
230    pub quiet: bool,
231    /// Output format the seam should render its own diagnostics in.
232    pub output: OutputFormat,
233}
234
235/// CLI-supplied callbacks the command-neutral health pipeline needs.
236///
237/// The pipeline itself stays cli-free; these are the seams the CLI threads in.
238pub struct HealthSeams<'a> {
239    /// Runs the runtime coverage sidecar (only when runtime coverage is set).
240    pub runtime_coverage_analyzer: &'a RuntimeCoverageAnalyzer<'a>,
241    /// Records module-graph structure facts (graph node count, edge count) into
242    /// the CLI's process-global telemetry sinks. Best-effort; the engine never
243    /// owns telemetry state.
244    pub note_graph_structure: &'a dyn Fn(usize, usize),
245}
246
247/// Command-neutral sort criteria for health complexity findings.
248#[derive(Debug, Clone, Copy, PartialEq, Eq)]
249pub enum HealthSort {
250    /// Worst first: exceeded-threshold class, then severity, CRAP presence,
251    /// and raw complexity metrics as tie-breakers.
252    Severity,
253    /// Descending cyclomatic complexity.
254    Cyclomatic,
255    /// Descending cognitive complexity.
256    Cognitive,
257    /// Descending function line count.
258    Lines,
259}
260
261/// Command-neutral threshold overrides for health complexity findings.
262#[derive(Debug, Clone, Copy, Default, PartialEq)]
263pub struct HealthThresholdOverrides {
264    /// Overrides the configured maximum cyclomatic complexity threshold.
265    pub max_cyclomatic: Option<u16>,
266    /// Overrides the configured maximum cognitive complexity threshold.
267    pub max_cognitive: Option<u16>,
268    /// Maximum CRAP score threshold. Functions meeting or exceeding this score
269    /// are reported as complexity findings.
270    pub max_crap: Option<f64>,
271}
272
273/// Command-neutral Istanbul coverage inputs for health CRAP scoring.
274#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
275pub struct HealthCoverageInputs<'a> {
276    /// Path to an Istanbul `coverage-final.json` used for CRAP scoring.
277    pub coverage: Option<&'a Path>,
278    /// Absolute coverage-path prefix to strip before rebasing files onto the
279    /// project root.
280    pub coverage_root: Option<&'a Path>,
281    /// The coverage map was recorded against a different checkout of this
282    /// project (the audit base-worktree pass), so function line numbers may
283    /// have drifted arbitrarily. Enables the distance-free unambiguous-name
284    /// match in the Istanbul lookup; keep `false` for same-checkout coverage,
285    /// where the bounded fuzz protects against stale data (#2347).
286    pub coverage_relocated: bool,
287}
288
289/// Validate that a coverage-data root is absolute under Unix or Windows path
290/// conventions.
291///
292/// Istanbul coverage paths often come from a Linux CI runner even when fallow
293/// is invoked on another host, so POSIX-rooted paths and Windows drive paths
294/// are both accepted on every platform.
295pub fn validate_coverage_root_absolute(coverage_root: Option<&Path>) -> Result<(), String> {
296    if let Some(path) = coverage_root
297        && !is_absolute_path_any_platform(path)
298    {
299        return Err(format!(
300            "--coverage-root expects an absolute path prefix from the coverage data, got '{}'. Use the checkout prefix from the machine that generated coverage, for example '/home/runner/work/myapp'.",
301            path.display()
302        ));
303    }
304    Ok(())
305}
306
307/// Command-neutral health exit gate options.
308#[derive(Debug, Clone, Copy, Default, PartialEq)]
309pub struct HealthGateOptions {
310    /// Fail the run when the health score (0-100) falls below this value.
311    pub min_score: Option<f64>,
312    /// Fail the run when any finding at or above this severity exists.
313    pub min_severity: Option<FindingSeverity>,
314    /// Render the score and findings but never fail CI on a health gate.
315    pub report_only: bool,
316}
317
318/// Input for deriving effective health sections from command-neutral flags.
319#[derive(Debug, Clone)]
320pub struct HealthSectionOptions {
321    output: OutputFormat,
322    complexity: bool,
323    file_scores: bool,
324    coverage_gaps: bool,
325    hotspots: bool,
326    targets: bool,
327    css: bool,
328    score: bool,
329    score_gate: bool,
330    snapshot_requested: bool,
331    trend: bool,
332}
333
334/// Derived section selection for health runs.
335#[derive(Debug, Clone, Copy, PartialEq, Eq)]
336pub struct DerivedHealthSections {
337    /// True when at least one section was explicitly requested; a request with
338    /// no explicit sections defaults to the full section set.
339    pub any_section: bool,
340    /// Render the complexity findings section.
341    pub complexity: bool,
342    /// Render the per-file health scores section.
343    pub file_scores: bool,
344    /// Render the static coverage gaps section.
345    pub coverage_gaps: bool,
346    /// Render the churn-based hotspots section.
347    pub hotspots: bool,
348    /// Render the refactoring targets section.
349    pub targets: bool,
350    /// Render the CSS / styling analytics section.
351    pub css: bool,
352    /// Compute and render the overall health score.
353    pub score: bool,
354    /// Analyze the full project even when only a subset of sections was
355    /// requested, because scores and snapshots need complete data.
356    pub force_full: bool,
357    /// True when the score is the only requested surface, so output can skip
358    /// section rendering entirely.
359    pub score_only_output: bool,
360}
361
362/// Command-neutral inputs used to normalize a health run before it reaches a
363/// concrete runner.
364#[derive(Debug, Clone)]
365pub struct HealthRunOptionsInput<'a> {
366    /// Output format; badge output implies the score section.
367    pub output: OutputFormat,
368    /// Complexity threshold overrides on top of the resolved config.
369    pub thresholds: HealthThresholdOverrides,
370    /// Cap on rendered findings per section.
371    pub top: Option<usize>,
372    /// Sort criteria for complexity findings.
373    pub sort: HealthSort,
374    /// Explicit request for the complexity findings section.
375    pub complexity: bool,
376    /// Explicit request for the per-file health scores section.
377    pub file_scores: bool,
378    /// Explicit request for the static coverage gaps section.
379    pub coverage_gaps: bool,
380    /// Explicit request for the churn-based hotspots section.
381    pub hotspots: bool,
382    /// Attribute hotspots to owners (implies the hotspots section data).
383    pub ownership: bool,
384    /// How owner identities are rendered (names or emails).
385    pub ownership_emails: Option<EmailMode>,
386    /// Explicit request for the refactoring targets section.
387    pub targets: bool,
388    /// Explicit request for the CSS / styling analytics section.
389    pub css: bool,
390    /// Effort estimation mode; requesting it also enables the targets section.
391    pub effort: Option<EffortEstimate>,
392    /// Explicit request for the overall health score.
393    pub score: bool,
394    /// Exit gate thresholds; a score gate implies the score section.
395    pub gates: HealthGateOptions,
396    /// True when the run should persist a health snapshot (forces a full run).
397    pub snapshot_requested: bool,
398    /// Explicit request for the score trend section (implies score).
399    pub trend: bool,
400    /// Churn lookback window for hotspots (`90d`, `6m`, `1y`, or an ISO date).
401    pub since: Option<&'a str>,
402    /// Minimum commit count for a file to qualify as churn evidence.
403    pub min_commits: Option<u32>,
404    /// Istanbul coverage inputs for CRAP scoring.
405    pub coverage_inputs: HealthCoverageInputs<'a>,
406    /// Runtime coverage sidecar options, when runtime analysis was requested.
407    pub runtime_coverage: Option<RuntimeCoverageOptions>,
408}
409
410/// Normalized health inputs shared by CLI, API, NAPI, and future runners.
411#[derive(Debug, Clone)]
412pub struct HealthRunOptions<'a> {
413    /// Complexity threshold overrides on top of the resolved config.
414    pub thresholds: HealthThresholdOverrides,
415    /// Cap on rendered findings per section.
416    pub top: Option<usize>,
417    /// Sort criteria for complexity findings.
418    pub sort: HealthSort,
419    /// Effective section selection derived from the raw request flags.
420    pub sections: DerivedHealthSections,
421    /// Attribute hotspots to owners; already gated on the hotspots section.
422    pub ownership: bool,
423    /// How owner identities are rendered (names or emails).
424    pub ownership_emails: Option<EmailMode>,
425    /// Effort estimation mode for refactoring targets.
426    pub effort: Option<EffortEstimate>,
427    /// Exit gate thresholds.
428    pub gates: HealthGateOptions,
429    /// Churn lookback window for hotspots (`90d`, `6m`, `1y`, or an ISO date).
430    pub since: Option<&'a str>,
431    /// Minimum commit count for a file to qualify as churn evidence.
432    pub min_commits: Option<u32>,
433    /// Istanbul coverage inputs for CRAP scoring.
434    pub coverage_inputs: HealthCoverageInputs<'a>,
435    /// Runtime coverage sidecar options, when runtime analysis was requested.
436    pub runtime_coverage: Option<RuntimeCoverageOptions>,
437}
438
439/// Command-neutral inputs needed to execute a health analysis.
440///
441/// These fields are shared runner inputs rather than rendering concerns.
442#[derive(Debug, Clone)]
443pub struct HealthExecutionOptions<'a> {
444    /// Project root to analyze.
445    pub root: &'a Path,
446    /// Explicit config file path; `None` triggers automatic discovery.
447    pub config_path: &'a Option<PathBuf>,
448    /// Output format of the run; badge output implies the score section.
449    pub output: OutputFormat,
450    /// Bypass the parse cache for this run.
451    pub no_cache: bool,
452    /// Worker thread count for parsing and analysis.
453    pub threads: usize,
454    /// Suppress progress notes on stderr.
455    pub quiet: bool,
456    /// Include per-decision-point complexity contributions in typed findings.
457    ///
458    /// This changes the produced health result shape, so it belongs to the
459    /// runner input contract rather than CLI rendering options.
460    pub complexity_breakdown: bool,
461    /// Complexity threshold overrides on top of the resolved config.
462    pub thresholds: HealthThresholdOverrides,
463    /// Cap on rendered findings per section.
464    pub top: Option<usize>,
465    /// Sort criteria for complexity findings.
466    pub sort: HealthSort,
467    /// Raw production-only request flag; folded into `production_override`
468    /// when the tri-state override is unset.
469    pub production: bool,
470    /// Tri-state production override: `Some` forces production-only analysis
471    /// on or off regardless of config, `None` defers to the config value.
472    pub production_override: Option<bool>,
473    /// Permit `extends` config inheritance from remote URLs.
474    pub allow_remote_extends: bool,
475    /// Git ref limiting findings to files changed since it.
476    pub changed_since: Option<&'a str>,
477    /// Pre-built diff index scoping findings to changed lines.
478    pub diff_index: Option<&'a DiffIndex>,
479    /// True when `diff_index` came from the process-shared diff source rather
480    /// than a health-specific one.
481    pub use_shared_diff_index: bool,
482    /// Workspace member paths limiting the analysis scope.
483    pub workspace: Option<&'a [String]>,
484    /// Git ref selecting only workspaces with changes since it.
485    pub changed_workspaces: Option<&'a str>,
486    /// Positional `[PATH]` scope: root-joined absolute file or directory inside
487    /// the root. Consumed CLI-side as one more workspace root (prefix scope),
488    /// so it composes with `workspace` the way multiple workspace roots
489    /// compose. `None` means whole-project scope.
490    pub scope: Option<PathBuf>,
491    /// Baseline file to compare finding counts against.
492    pub baseline: Option<&'a Path>,
493    /// Path to write the run's finding counts as a new baseline.
494    pub save_baseline: Option<&'a Path>,
495    /// Controls both halves of the baseline lifecycle: which buckets
496    /// `save_baseline` writes and how a loaded `baseline` is matched. An
497    /// identity save writes count and identity buckets, a count save writes
498    /// count buckets only.
499    pub baseline_mode: crate::baseline::HealthBaselineMode,
500    /// Whether `baseline_mode` was requested explicitly rather than defaulted.
501    /// A defaulted count save refuses to overwrite a baseline that carries
502    /// identity buckets, because dropping them breaks later identity-mode
503    /// comparisons; an explicit count request is treated as intent to
504    /// downgrade.
505    pub baseline_mode_explicit: bool,
506    /// Render the complexity findings section.
507    pub complexity: bool,
508    /// Render the per-file health scores section.
509    pub file_scores: bool,
510    /// Render the static coverage gaps section.
511    pub coverage_gaps: bool,
512    /// Let config-enabled coverage settings activate the coverage gaps
513    /// section even when it was not requested on this run.
514    pub config_activates_coverage_gaps: bool,
515    /// Render the churn-based hotspots section.
516    pub hotspots: bool,
517    /// Attribute hotspots to owners.
518    pub ownership: bool,
519    /// How owner identities are rendered (names or emails).
520    pub ownership_emails: Option<EmailMode>,
521    /// Render the refactoring targets section.
522    pub targets: bool,
523    /// Render the CSS / styling analytics section.
524    pub css: bool,
525    /// Scan all stylesheets for the CSS section instead of only changed files.
526    pub css_deep: bool,
527    /// Analyze the full project even when only a subset of sections was
528    /// requested, because scores and snapshots need complete data.
529    pub force_full: bool,
530    /// True when the score is the only requested surface, so output can skip
531    /// section rendering entirely.
532    pub score_only_output: bool,
533    /// Fail the run on coverage gaps instead of reporting them advisorily.
534    pub enforce_coverage_gap_gate: bool,
535    /// Effort estimation mode for refactoring targets.
536    pub effort: Option<EffortEstimate>,
537    /// Compute and render the overall health score.
538    pub score: bool,
539    /// Exit gate thresholds.
540    pub gates: HealthGateOptions,
541    /// Churn lookback window for hotspots (`90d`, `6m`, `1y`, or an ISO date).
542    pub since: Option<&'a str>,
543    /// Minimum commit count for a file to qualify as churn evidence.
544    pub min_commits: Option<u32>,
545    /// Include score-derivation explanations in the rendered output.
546    pub explain: bool,
547    /// Render the condensed summary view instead of full sections.
548    pub summary: bool,
549    /// Path to persist a health snapshot for later trend comparison.
550    pub save_snapshot: Option<PathBuf>,
551    /// Render the score trend against previously saved snapshots.
552    pub trend: bool,
553    /// Istanbul coverage inputs for CRAP scoring.
554    pub coverage_inputs: HealthCoverageInputs<'a>,
555    /// Print per-phase timing diagnostics.
556    pub performance: bool,
557    /// Runtime coverage sidecar options, when runtime analysis was requested.
558    pub runtime_coverage: Option<RuntimeCoverageOptions>,
559    /// Pre-recorded churn data file replacing live `git log` analysis.
560    pub churn_file: Option<&'a Path>,
561    /// Compatibility identity persisted with snapshots and checked by trends.
562    pub analysis_identity: fallow_types::semantic::SemanticAnalysisIdentity,
563    /// Optional grouping mode for typed health output.
564    pub group_by: Option<GroupByMode>,
565}
566
567/// Derive effective health section flags for CLI and embedders.
568#[must_use]
569fn derive_health_sections(options: &HealthSectionOptions) -> DerivedHealthSections {
570    let score = options.score
571        || options.score_gate
572        || options.trend
573        || matches!(options.output, OutputFormat::Badge);
574    let any_section = options.complexity
575        || options.file_scores
576        || options.coverage_gaps
577        || options.hotspots
578        || options.targets
579        || score;
580    let effective_score = if any_section { score } else { true } || options.snapshot_requested;
581    let force_full = options.snapshot_requested || effective_score;
582
583    DerivedHealthSections {
584        any_section,
585        complexity: if any_section {
586            options.complexity
587        } else {
588            true
589        },
590        file_scores: if any_section {
591            options.file_scores
592        } else {
593            true
594        } || force_full,
595        coverage_gaps: if any_section {
596            options.coverage_gaps
597        } else {
598            false
599        },
600        hotspots: if any_section { options.hotspots } else { true }
601            || options.snapshot_requested
602            || options.trend,
603        targets: if any_section { options.targets } else { true },
604        css: options.css,
605        score: effective_score,
606        force_full,
607        score_only_output: is_health_score_only_output(options, score),
608    }
609}
610
611/// Normalize health run inputs into the engine-owned run contract.
612#[must_use]
613pub fn derive_health_run_options(input: HealthRunOptionsInput<'_>) -> HealthRunOptions<'_> {
614    let targets = input.targets || input.effort.is_some();
615    let sections = derive_health_sections(&HealthSectionOptions {
616        output: input.output,
617        complexity: input.complexity,
618        file_scores: input.file_scores,
619        coverage_gaps: input.coverage_gaps,
620        hotspots: input.hotspots,
621        targets,
622        css: input.css,
623        score: input.score,
624        score_gate: input.gates.min_score.is_some(),
625        snapshot_requested: input.snapshot_requested,
626        trend: input.trend,
627    });
628
629    HealthRunOptions {
630        thresholds: input.thresholds,
631        top: input.top,
632        sort: input.sort,
633        sections,
634        ownership: input.ownership && sections.hotspots,
635        ownership_emails: input.ownership_emails,
636        effort: input.effort,
637        gates: input.gates,
638        since: input.since,
639        min_commits: input.min_commits,
640        coverage_inputs: input.coverage_inputs,
641        runtime_coverage: input.runtime_coverage,
642    }
643}
644
645fn is_health_score_only_output(options: &HealthSectionOptions, score: bool) -> bool {
646    score
647        && !options.complexity
648        && !options.file_scores
649        && !options.coverage_gaps
650        && !options.hotspots
651        && !options.targets
652        && !options.trend
653}
654
655/// Input for deriving effective programmatic complexity sections.
656#[derive(Debug, Clone)]
657pub struct ComplexitySectionOptions {
658    complexity: bool,
659    file_scores: bool,
660    coverage_gaps: bool,
661    hotspots: bool,
662    ownership: bool,
663    targets: bool,
664    css: bool,
665    score: bool,
666}
667
668/// Derived section selection for programmatic health / complexity runs.
669#[derive(Debug, Clone, Copy, PartialEq, Eq)]
670pub struct DerivedComplexityOptions {
671    any_section: bool,
672    complexity: bool,
673    file_scores: bool,
674    coverage_gaps: bool,
675    hotspots: bool,
676    ownership: bool,
677    targets: bool,
678    force_full: bool,
679    score_only_output: bool,
680    score: bool,
681}
682
683/// Derive effective programmatic health / complexity section flags.
684#[must_use]
685pub fn derive_complexity_sections(options: &ComplexitySectionOptions) -> DerivedComplexityOptions {
686    let requested_hotspots = options.hotspots || options.ownership;
687    let sections = derive_health_sections(&HealthSectionOptions {
688        output: OutputFormat::Human,
689        complexity: options.complexity,
690        file_scores: options.file_scores,
691        coverage_gaps: options.coverage_gaps,
692        hotspots: requested_hotspots,
693        targets: options.targets,
694        css: options.css,
695        score: options.score,
696        score_gate: false,
697        snapshot_requested: false,
698        trend: false,
699    });
700
701    DerivedComplexityOptions {
702        any_section: sections.any_section,
703        complexity: sections.complexity,
704        file_scores: sections.file_scores,
705        coverage_gaps: sections.coverage_gaps,
706        hotspots: sections.hotspots,
707        ownership: options.ownership && sections.hotspots,
708        targets: sections.targets,
709        force_full: sections.force_full,
710        score_only_output: sections.score_only_output,
711        score: sections.score,
712    }
713}
714
715/// Normalized programmatic complexity / health inputs shared by API, NAPI, and
716/// engine-backed runners.
717#[derive(Debug, Clone, PartialEq)]
718pub struct ComplexityRunOptions<'a> {
719    thresholds: HealthThresholdOverrides,
720    top: Option<usize>,
721    sort: HealthSort,
722    complexity_breakdown: bool,
723    sections: DerivedComplexityOptions,
724    ownership_emails: Option<EmailMode>,
725    effort: Option<EffortEstimate>,
726    css: bool,
727    since: Option<&'a str>,
728    min_commits: Option<u32>,
729    coverage_inputs: HealthCoverageInputs<'a>,
730}
731
732/// Command-neutral runtime coverage input for health analysis.
733#[derive(Debug, Clone)]
734pub struct RuntimeCoverageOptions {
735    /// Path to the runtime coverage artifact captured by the sidecar.
736    pub path: PathBuf,
737    /// Minimum invocation count for a function to classify as hot-path.
738    pub min_invocations_hot: u64,
739    /// Minimum total trace volume before high-confidence `safe_to_delete` /
740    /// `review_required` verdicts may be emitted. Below this the sidecar caps
741    /// confidence at `medium`. `None` lets the sidecar use its spec-default
742    /// (5000).
743    pub min_observation_volume: Option<u32>,
744    /// Fraction of total trace count below which an invoked function is
745    /// classified as `low_traffic` rather than `active`. `None` lets the
746    /// sidecar use its spec-default (0.001 = 0.1%).
747    pub low_traffic_threshold: Option<f64>,
748    /// Verified license JWT forwarded to the closed-source sidecar.
749    pub license_jwt: String,
750    /// License or trial watermark to stamp on the runtime coverage output.
751    pub watermark: Option<RuntimeCoverageWatermark>,
752}
753
754/// Pre-parsed health input reused from another analysis in the same process.
755pub struct HealthSharedParseData {
756    /// Discovered files reused from the upstream analysis.
757    pub files: Vec<fallow_types::discover::DiscoveredFile>,
758    /// Parsed modules reused from the upstream analysis.
759    pub modules: Vec<fallow_types::extract::ModuleInfo>,
760    /// Dead-code results reused by advisory health surfaces that do not need the graph.
761    pub dead_code_results: Option<AnalysisResults>,
762    /// Workspace metadata discovered during config resolution.
763    pub workspaces: Vec<WorkspaceInfo>,
764    /// Full analysis output (graph + results) for file scoring.
765    pub analysis_output: Option<DeadCodeAnalysisArtifacts>,
766}
767
768#[cfg(test)]
769mod tests {
770    use super::*;
771
772    fn health_run_input() -> HealthRunOptionsInput<'static> {
773        HealthRunOptionsInput {
774            output: OutputFormat::Json,
775            thresholds: HealthThresholdOverrides::default(),
776            top: None,
777            sort: HealthSort::Cyclomatic,
778            complexity: false,
779            file_scores: false,
780            coverage_gaps: false,
781            hotspots: false,
782            ownership: false,
783            ownership_emails: None,
784            targets: false,
785            css: false,
786            effort: None,
787            score: false,
788            gates: HealthGateOptions::default(),
789            snapshot_requested: false,
790            trend: false,
791            since: None,
792            min_commits: None,
793            coverage_inputs: HealthCoverageInputs::default(),
794            runtime_coverage: None,
795        }
796    }
797
798    #[test]
799    fn health_execution_options_own_shared_runner_scope() {
800        let root = Path::new("/project");
801        let config_path = None;
802        let workspace = vec!["packages/app".to_string()];
803        let diff = DiffIndex::from_unified_diff(
804            "diff --git a/src/a.ts b/src/a.ts\n\
805             --- a/src/a.ts\n\
806             +++ b/src/a.ts\n\
807             @@ -0,0 +1,1 @@\n\
808             +new line\n",
809        );
810        let runtime_coverage = RuntimeCoverageOptions {
811            path: PathBuf::from("coverage/v8"),
812            min_invocations_hot: 10,
813            min_observation_volume: Some(500),
814            low_traffic_threshold: Some(0.01),
815            license_jwt: "test.jwt".to_string(),
816            watermark: None,
817        };
818
819        let options = HealthExecutionOptions {
820            root,
821            config_path: &config_path,
822            output: OutputFormat::Json,
823            no_cache: true,
824            threads: 2,
825            quiet: true,
826            complexity_breakdown: true,
827            thresholds: HealthThresholdOverrides::default(),
828            top: Some(5),
829            sort: HealthSort::Cognitive,
830            production: true,
831            production_override: Some(true),
832            allow_remote_extends: false,
833            changed_since: Some("HEAD~1"),
834            diff_index: Some(&diff),
835            use_shared_diff_index: false,
836            workspace: Some(&workspace),
837            changed_workspaces: None,
838            scope: None,
839            baseline: Some(Path::new(".fallow/health-baseline.json")),
840            save_baseline: None,
841            baseline_mode: crate::baseline::HealthBaselineMode::Count,
842            baseline_mode_explicit: false,
843            complexity: true,
844            file_scores: true,
845            coverage_gaps: false,
846            config_activates_coverage_gaps: false,
847            hotspots: true,
848            ownership: false,
849            ownership_emails: None,
850            targets: true,
851            css: false,
852            css_deep: false,
853            force_full: true,
854            score_only_output: false,
855            enforce_coverage_gap_gate: true,
856            effort: Some(EffortEstimate::Low),
857            score: true,
858            gates: HealthGateOptions {
859                min_score: Some(80.0),
860                min_severity: None,
861                report_only: false,
862            },
863            since: Some("30d"),
864            min_commits: Some(2),
865            explain: true,
866            summary: false,
867            save_snapshot: Some(PathBuf::from(".fallow/snapshots/health.json")),
868            trend: true,
869            coverage_inputs: HealthCoverageInputs::default(),
870            performance: true,
871            runtime_coverage: Some(runtime_coverage),
872            churn_file: Some(Path::new("churn.json")),
873            analysis_identity: fallow_types::semantic::SemanticAnalysisIdentity::default(),
874            group_by: Some(GroupByMode::Directory),
875        };
876
877        assert_eq!(options.root, root);
878        assert!(
879            options
880                .diff_index
881                .is_some_and(|index| index.line_is_added("src/a.ts", 1))
882        );
883        assert_eq!(options.workspace, Some(workspace.as_slice()));
884        assert!(options.runtime_coverage.is_some());
885        assert_eq!(options.group_by, Some(GroupByMode::Directory));
886        assert_eq!(
887            options.save_snapshot.as_deref(),
888            Some(Path::new(".fallow/snapshots/health.json"))
889        );
890    }
891
892    #[test]
893    fn health_run_options_default_sections_match_health_defaults() {
894        let run = derive_health_run_options(health_run_input());
895
896        assert!(run.sections.complexity);
897        assert!(run.sections.file_scores);
898        assert!(run.sections.hotspots);
899        assert!(run.sections.targets);
900        assert!(run.sections.score);
901        assert!(!run.ownership);
902    }
903
904    #[test]
905    fn health_run_options_effort_requests_targets() {
906        let mut input = health_run_input();
907        input.effort = Some(EffortEstimate::Low);
908
909        let run = derive_health_run_options(input);
910
911        assert!(run.sections.targets);
912        assert_eq!(run.effort, Some(EffortEstimate::Low));
913    }
914
915    struct HealthExecutionOptionsFixture {
916        config_path: Option<PathBuf>,
917    }
918
919    impl HealthExecutionOptionsFixture {
920        const fn new() -> Self {
921            Self { config_path: None }
922        }
923
924        fn options<'a>(&'a self, root: &'a Path) -> HealthExecutionOptions<'a> {
925            HealthExecutionOptions {
926                root,
927                config_path: &self.config_path,
928                output: OutputFormat::Human,
929                no_cache: true,
930                threads: 1,
931                quiet: true,
932                complexity_breakdown: false,
933                thresholds: HealthThresholdOverrides::default(),
934                top: None,
935                sort: HealthSort::Cyclomatic,
936                production: false,
937                production_override: None,
938                allow_remote_extends: false,
939                changed_since: None,
940                diff_index: None,
941                use_shared_diff_index: false,
942                workspace: None,
943                changed_workspaces: None,
944                scope: None,
945                baseline: None,
946                save_baseline: None,
947                baseline_mode: crate::baseline::HealthBaselineMode::Count,
948                baseline_mode_explicit: false,
949                complexity: true,
950                file_scores: false,
951                coverage_gaps: false,
952                config_activates_coverage_gaps: false,
953                hotspots: false,
954                ownership: false,
955                ownership_emails: None,
956                targets: false,
957                css: false,
958                css_deep: false,
959                force_full: false,
960                score_only_output: false,
961                enforce_coverage_gap_gate: true,
962                effort: None,
963                score: false,
964                gates: HealthGateOptions::default(),
965                since: None,
966                min_commits: None,
967                explain: false,
968                summary: false,
969                save_snapshot: None,
970                trend: false,
971                coverage_inputs: HealthCoverageInputs::default(),
972                performance: false,
973                runtime_coverage: None,
974                churn_file: None,
975                analysis_identity: fallow_types::semantic::SemanticAnalysisIdentity::default(),
976                group_by: None,
977            }
978        }
979    }
980
981    #[test]
982    fn standalone_health_precomputes_dead_code_when_default_crap_can_use_graph() {
983        let project = tempfile::tempdir().expect("temp dir");
984        let fixture = HealthExecutionOptionsFixture::new();
985        let options = fixture.options(project.path());
986        let config = crate::project_config::default_project_config(project.path()).config;
987
988        assert!(should_precompute_dead_code_analysis(&options, &config));
989    }
990
991    #[test]
992    fn standalone_health_skips_precompute_when_no_section_needs_analysis_artifacts() {
993        let project = tempfile::tempdir().expect("temp dir");
994        let fixture = HealthExecutionOptionsFixture::new();
995        let mut options = fixture.options(project.path());
996        options.thresholds.max_crap = Some(0.0);
997        let config = crate::project_config::default_project_config(project.path()).config;
998
999        assert!(!should_precompute_dead_code_analysis(&options, &config));
1000    }
1001
1002    #[test]
1003    fn standalone_health_precomputes_dead_code_for_target_sections() {
1004        let project = tempfile::tempdir().expect("temp dir");
1005        let fixture = HealthExecutionOptionsFixture::new();
1006        let mut options = fixture.options(project.path());
1007        options.thresholds.max_crap = Some(0.0);
1008        options.targets = true;
1009        let config = crate::project_config::default_project_config(project.path()).config;
1010
1011        assert!(should_precompute_dead_code_analysis(&options, &config));
1012    }
1013
1014    #[test]
1015    fn health_run_options_ownership_requires_hotspots() {
1016        let mut input = health_run_input();
1017        input.complexity = true;
1018        input.ownership = true;
1019
1020        let run = derive_health_run_options(input);
1021
1022        assert!(!run.sections.hotspots);
1023        assert!(!run.ownership);
1024
1025        let mut input = health_run_input();
1026        input.ownership = true;
1027        input.hotspots = true;
1028
1029        let run = derive_health_run_options(input);
1030
1031        assert!(run.sections.hotspots);
1032        assert!(run.ownership);
1033    }
1034
1035    #[test]
1036    fn health_run_options_score_gate_forces_score() {
1037        let mut input = health_run_input();
1038        input.gates.min_score = Some(90.0);
1039
1040        let run = derive_health_run_options(input);
1041
1042        assert!(run.sections.score);
1043        assert_eq!(run.gates.min_score, Some(90.0));
1044    }
1045
1046    #[test]
1047    fn coverage_root_accepts_posix_absolute() {
1048        assert!(validate_coverage_root_absolute(Some(Path::new("/ci/workspace"))).is_ok());
1049        assert!(
1050            validate_coverage_root_absolute(Some(Path::new("/home/runner/work/myapp"))).is_ok()
1051        );
1052    }
1053
1054    #[test]
1055    fn coverage_root_rejects_relative() {
1056        assert!(validate_coverage_root_absolute(Some(Path::new("src"))).is_err());
1057        assert!(validate_coverage_root_absolute(Some(Path::new("./coverage"))).is_err());
1058        assert!(validate_coverage_root_absolute(Some(Path::new("a/b/c"))).is_err());
1059    }
1060
1061    #[test]
1062    fn coverage_root_accepts_none() {
1063        assert!(validate_coverage_root_absolute(None).is_ok());
1064    }
1065
1066    #[test]
1067    fn coverage_root_accepts_windows_absolute_on_all_hosts() {
1068        assert!(validate_coverage_root_absolute(Some(Path::new(r"C:\ci\workspace"))).is_ok());
1069    }
1070}
fallow_engine/health/mod.rs

fallow_engine/health/
mod.rs
