navidrome/.github/workflows/detect-changes.sh
Deluan afd04c742c ci: skip pipeline steps for areas a pull request does not touch
A new `changes` job diffs the PR against its base branch and emits four
flags (go, js, i18n, build) that gate the steps of the test, lint and build
jobs. A docs-only PR now runs no Go tests and no 11-platform build.

The flags gate steps rather than jobs on purpose: a job-level skip
propagates through the needs chain (actions/runner#491) and would take the
release jobs down with it on tag pushes. Only upload-packages and the
push-manifest jobs skip at the job level, where nothing depends on them.

Master pushes and tags always get every flag, so a release can never be
built from a partially validated tree.

coverage-on-pr.yml now probes for the coverage artifact before downloading
it, since a PR with no Go changes produces none.
2026-09-05 13:31:45 -04:00

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#!/usr/bin/env bash
#
# Emits per-area change flags to $GITHUB_OUTPUT so the pipeline can skip work a
# pull request cannot affect:
#
# go - Go sources, module files, linter config, embedded resources
# js - anything under ui/
# i18n - translation files and their validation script
# build - anything that ends up in a binary, image or package (i.e. every
# change except the doc-only paths in $DOC_ONLY_RE)
#
# Only pull requests are narrowed. Master pushes and tags always get every flag,
# so a release can never be built from a partially validated tree.
#
# Flags gate STEPS, not jobs: a job-level skip propagates through the needs
# chain (actions/runner#491) and would take the release jobs down with it.
#
# Compares HEAD against $BASE_REF (default master). Requires full history
# (fetch-depth: 0 in CI).
set -uo pipefail
export LC_ALL=C
GO_RE='(\.go$|(^|/)go\.(mod|sum)$|^Makefile$|^\.golangci\.yml$|^resources/)'
JS_RE='^ui/'
I18N_RE='(^resources/i18n/|^\.github/workflows/validate-translations\.sh$)'
DOC_ONLY_RE='(\.md$|^LICENSE$|^\.git-blame-ignore-revs$|^\.gitignore$|^\.devcontainer/)'
emit() { printf '%s=%s\n' "$1" "$2" | tee -a "${GITHUB_OUTPUT:-/dev/null}"; }
if [ "${GITHUB_EVENT_NAME:-}" != "pull_request" ]; then
echo "Not a pull request — running everything."
for area in go js i18n build; do emit "$area" true; done
exit 0
fi
BASE_REF="${BASE_REF:-master}"
git fetch --no-tags --quiet origin "+refs/heads/${BASE_REF}:refs/remotes/origin/${BASE_REF}"
files="$(git diff --name-only "origin/${BASE_REF}...HEAD")"
echo "Changed files:"
printf '%s\n' "$files" | sed 's/^/ /'
echo
flag() { # $1=name $2=regex
if printf '%s\n' "$files" | grep -qE "$2"; then emit "$1" true; else emit "$1" false; fi
}
flag go "$GO_RE"
flag js "$JS_RE"
flag i18n "$I18N_RE"
if printf '%s\n' "$files" | grep -vE "$DOC_ONLY_RE" | grep -q '[^[:space:]]'; then
emit build true
else
emit build false
fi