mirror of
https://github.com/davidkaya/aryx.git
synced 2026-08-06 19:58:43 +02:00
feat: add git workflow backend operations
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
David Kaya
@@ -0,0 +1,327 @@
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import { Buffer } from 'node:buffer';
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import { isUtf8 } from 'node:buffer';
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import type {
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ProjectGitBaselineFile,
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ProjectGitDiffPreview,
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ProjectGitRunChangeCounts,
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ProjectGitRunChangeKind,
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ProjectGitRunChangeSummary,
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ProjectGitRunChangedFile,
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ProjectGitWorkingTreeFile,
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ProjectGitWorkingTreeSnapshot,
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} from '@shared/domain/project';
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interface DiffStats {
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additions: number;
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deletions: number;
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}
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interface BuildProjectGitRunChangeSummaryInput {
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generatedAt: string;
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preRunSnapshot?: ProjectGitWorkingTreeSnapshot;
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preRunBaselineFiles?: readonly ProjectGitBaselineFile[];
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postRunSnapshot?: ProjectGitWorkingTreeSnapshot;
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postRunBaselineFiles?: readonly ProjectGitBaselineFile[];
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}
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function parseDiffStats(diff: string | undefined): DiffStats {
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if (!diff) {
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return { additions: 0, deletions: 0 };
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}
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let additions = 0;
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let deletions = 0;
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for (const line of diff.split('\n')) {
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if (line.startsWith('+') && !line.startsWith('+++')) {
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additions += 1;
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} else if (line.startsWith('-') && !line.startsWith('---')) {
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deletions += 1;
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}
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}
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return { additions, deletions };
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}
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function isBinaryDiff(diff: string | undefined): boolean {
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if (!diff) {
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return false;
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}
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return diff.includes('GIT binary patch') || diff.includes('Binary files ');
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}
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function decodeUtf8FromBase64(value: string | undefined): string | undefined {
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if (value === undefined) {
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return undefined;
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}
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const buffer = Buffer.from(value, 'base64');
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return isUtf8(buffer) ? buffer.toString('utf8') : undefined;
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}
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function canRestoreBaseline(
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baseline: ProjectGitBaselineFile | undefined,
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): baseline is ProjectGitBaselineFile {
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return baseline !== undefined
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&& (baseline.untrackedContentBase64 !== undefined || baseline.combinedDiff !== undefined);
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}
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function previewFromBaselineFile(
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file: Pick<ProjectGitWorkingTreeFile, 'path'>,
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baseline: ProjectGitBaselineFile | undefined,
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): ProjectGitDiffPreview | undefined {
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if (!baseline) {
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return undefined;
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}
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if (baseline.untrackedContentBase64 !== undefined) {
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return {
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path: file.path,
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previousPath: baseline.previousPath,
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newFileContents: decodeUtf8FromBase64(baseline.untrackedContentBase64),
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...(baseline.isBinary ? { isBinary: true } : {}),
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};
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}
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if (baseline.combinedDiff === undefined && baseline.isBinary !== true) {
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return undefined;
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}
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return {
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path: file.path,
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previousPath: baseline.previousPath,
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...(baseline.combinedDiff && !isBinaryDiff(baseline.combinedDiff)
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? { diff: baseline.combinedDiff }
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: {}),
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...(baseline.isBinary || isBinaryDiff(baseline.combinedDiff) ? { isBinary: true } : {}),
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};
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}
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function sameWorkingTreeFile(
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left: ProjectGitWorkingTreeFile,
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right: ProjectGitWorkingTreeFile,
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): boolean {
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return (
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left.path === right.path
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&& left.previousPath === right.previousPath
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&& left.stagedStatus === right.stagedStatus
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&& left.unstagedStatus === right.unstagedStatus
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&& left.isConflicted === right.isConflicted
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);
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}
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function sameBaselineFile(
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left: ProjectGitBaselineFile | undefined,
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right: ProjectGitBaselineFile | undefined,
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): boolean {
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if (!left && !right) {
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return true;
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}
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if (!left || !right) {
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return false;
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}
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return (
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left.path === right.path
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&& left.previousPath === right.previousPath
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&& left.combinedDiff === right.combinedDiff
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&& left.untrackedContentBase64 === right.untrackedContentBase64
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&& left.isBinary === right.isBinary
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);
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}
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function createRunChangeCounts(): ProjectGitRunChangeCounts {
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return {
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added: 0,
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modified: 0,
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deleted: 0,
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renamed: 0,
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copied: 0,
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typeChanged: 0,
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unmerged: 0,
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untracked: 0,
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cleaned: 0,
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};
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}
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function incrementRunChangeCount(
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counts: ProjectGitRunChangeCounts,
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kind: ProjectGitRunChangeKind,
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): void {
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switch (kind) {
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case 'added':
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counts.added += 1;
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break;
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case 'modified':
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counts.modified += 1;
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break;
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case 'deleted':
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counts.deleted += 1;
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break;
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case 'renamed':
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counts.renamed += 1;
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break;
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case 'copied':
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counts.copied += 1;
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break;
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case 'type-changed':
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counts.typeChanged += 1;
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break;
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case 'unmerged':
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counts.unmerged += 1;
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break;
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case 'untracked':
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counts.untracked += 1;
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break;
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case 'cleaned':
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counts.cleaned += 1;
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break;
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}
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}
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function resolveRunChangeKind(file: ProjectGitWorkingTreeFile): ProjectGitRunChangeKind {
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if (file.isConflicted) {
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return 'unmerged';
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}
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return file.unstagedStatus ?? file.stagedStatus ?? 'modified';
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}
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function sortRunChangedFiles(
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left: ProjectGitRunChangedFile,
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right: ProjectGitRunChangedFile,
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): number {
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if (left.origin !== right.origin) {
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return left.origin === 'run-created' ? -1 : 1;
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}
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return left.path.localeCompare(right.path);
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}
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export function buildProjectGitRunChangeSummary(
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input: BuildProjectGitRunChangeSummaryInput,
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): ProjectGitRunChangeSummary | undefined {
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const {
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generatedAt,
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preRunSnapshot,
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preRunBaselineFiles,
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postRunSnapshot,
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postRunBaselineFiles,
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} = input;
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if (!preRunSnapshot || !postRunSnapshot) {
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return undefined;
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}
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const preRunFilesByPath = new Map(
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preRunSnapshot.files.map((file) => [file.path, file] satisfies [string, ProjectGitWorkingTreeFile]),
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);
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const preRunBaselineByPath = new Map(
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(preRunBaselineFiles ?? []).map((file) => [file.path, file] satisfies [string, ProjectGitBaselineFile]),
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);
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const postRunBaselineByPath = new Map(
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(postRunBaselineFiles ?? []).map((file) => [file.path, file] satisfies [string, ProjectGitBaselineFile]),
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);
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const matchedPreRunPaths = new Set<string>();
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const files: ProjectGitRunChangedFile[] = [];
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for (const postRunFile of postRunSnapshot.files) {
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const matchedPreRunFile = preRunFilesByPath.get(postRunFile.path)
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?? (postRunFile.previousPath ? preRunFilesByPath.get(postRunFile.previousPath) : undefined);
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const matchedPreRunPath = matchedPreRunFile?.path;
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const postRunBaseline = postRunBaselineByPath.get(postRunFile.path);
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if (!matchedPreRunFile || !matchedPreRunPath) {
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const preview = previewFromBaselineFile(postRunFile, postRunBaseline);
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const stats = parseDiffStats(preview?.diff);
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files.push({
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path: postRunFile.path,
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previousPath: postRunFile.previousPath,
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kind: resolveRunChangeKind(postRunFile),
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origin: 'run-created',
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stagedStatus: postRunFile.stagedStatus,
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unstagedStatus: postRunFile.unstagedStatus,
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...(postRunFile.isConflicted ? { isConflicted: true } : {}),
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additions: stats.additions,
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deletions: stats.deletions,
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canRevert: true,
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...(preview ? { preview } : {}),
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});
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continue;
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}
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matchedPreRunPaths.add(matchedPreRunPath);
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const preRunBaseline = preRunBaselineByPath.get(matchedPreRunPath);
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if (sameWorkingTreeFile(matchedPreRunFile, postRunFile) && sameBaselineFile(preRunBaseline, postRunBaseline)) {
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continue;
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}
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const preview = previewFromBaselineFile(postRunFile, postRunBaseline);
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const stats = parseDiffStats(preview?.diff);
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files.push({
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path: postRunFile.path,
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previousPath: postRunFile.previousPath,
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kind: resolveRunChangeKind(postRunFile),
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origin: 'pre-existing',
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stagedStatus: postRunFile.stagedStatus,
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unstagedStatus: postRunFile.unstagedStatus,
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...(postRunFile.isConflicted ? { isConflicted: true } : {}),
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additions: stats.additions,
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deletions: stats.deletions,
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canRevert: canRestoreBaseline(preRunBaseline),
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...(preview ? { preview } : {}),
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});
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}
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for (const preRunFile of preRunSnapshot.files) {
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if (matchedPreRunPaths.has(preRunFile.path)) {
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continue;
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}
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const preRunBaseline = preRunBaselineByPath.get(preRunFile.path);
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const preview = previewFromBaselineFile(preRunFile, preRunBaseline);
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const stats = parseDiffStats(preview?.diff);
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files.push({
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path: preRunFile.path,
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previousPath: preRunFile.previousPath,
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kind: 'cleaned',
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origin: 'pre-existing',
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stagedStatus: preRunFile.stagedStatus,
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unstagedStatus: preRunFile.unstagedStatus,
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...(preRunFile.isConflicted ? { isConflicted: true } : {}),
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additions: stats.additions,
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deletions: stats.deletions,
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canRevert: canRestoreBaseline(preRunBaseline),
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...(preview ? { preview } : {}),
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});
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}
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const branchChanged = preRunSnapshot.branch !== postRunSnapshot.branch;
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if (files.length === 0 && !branchChanged) {
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return undefined;
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}
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files.sort(sortRunChangedFiles);
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const counts = createRunChangeCounts();
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let additions = 0;
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let deletions = 0;
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for (const file of files) {
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incrementRunChangeCount(counts, file.kind);
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additions += file.additions;
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deletions += file.deletions;
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}
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return {
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generatedAt,
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branchAtStart: preRunSnapshot.branch,
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branchAtEnd: postRunSnapshot.branch,
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...(branchChanged ? { branchChanged: true } : {}),
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fileCount: files.length,
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additions,
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deletions,
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counts,
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files,
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};
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}
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