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34 changes: 26 additions & 8 deletions src/github-injector.ts
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,12 @@ import { SELECTOR_PR_REVIEW_TOOLS } from "./github/components/selectors";

const coverageData = new Map<string, FileCoverage>();

const enum CoverageState {
HIT = 1,
MISS = 0,
OMIT = -1,
}

export function tryInjectDiffUI(): void {
try {
tryInjectDiffCommitUI();
Expand Down Expand Up @@ -256,6 +262,13 @@ async function injectIntoFileContainer(
}
}

function hitCountToState(hitCount: number): CoverageState {
if (hitCount >= 1) return CoverageState.HIT;
if (hitCount === 0) return CoverageState.MISS;

return CoverageState.OMIT;
}

function injectIntoGutterCell(cell: Element, coverage: FileCoverage): void {
cell.querySelectorAll(".qlty-coverage-line").forEach((el) => el.remove());

Expand All @@ -271,16 +284,21 @@ function injectIntoGutterCell(cell: Element, coverage: FileCoverage): void {
return;
}

const hit = coverage.hits[lineNumber] ?? 0;
const coverageStateClassMap = {
[CoverageState.HIT]: 'qlty-coverage-hit',
[CoverageState.MISS]: 'qlty-coverage-miss',
[CoverageState.OMIT]: 'qlty-coverage-omit',
};

const omittedHitCount = -1;
const hitCount = coverage.hits[lineNumber] ?? omittedHitCount;

const coverageState = hitCountToState(hitCount);
const coverageClass = coverageStateClassMap[coverageState];

const el = cell.appendChild(document.createElement("div"));
el.classList.add("qlty-coverage-gutter");
if (hit > 0) {
el.classList.add("qlty-coverage-hit");
} else if (hit === 0) {
el.classList.add("qlty-coverage-miss");
} else if (hit < 0) {
el.classList.add("qlty-coverage-omit");
}
el.classList.add(coverageClass);
}

function injectCoverageSummary(
Expand Down