Clean Fixture

1#!/usr/bin/env bash
2# Reclaim disk after a fixture's screenshots are captured. Essential for
3# dev-build runs, where each `expo run:<platform>` leaves multi-GB native build
4# output (iOS Pods + DerivedData, Android Gradle build). Removes the heavy,
5# regenerable artifacts and keeps the app source + git history, so the grader's
6# `git diff` still works.
7#
8# Usage: clean-fixture.sh <project-path>
9#
10# Env: EXPO_SKILL_EVAL_KEEP_DERIVEDDATA=1 skips the iOS DerivedData sweep (set it
11#   only if you keep a real Xcode project literally named "fixture").
12set -uo pipefail
13
14APP="${1:?usage: clean-fixture.sh <project-path>}"
15
16# Safety guard: only ever clean inside an expo-skill-eval workspace.
17case "$APP" in
18  *expo-skill-eval-*) : ;;
19  *) echo "clean-fixture: refusing to clean '$APP' (not an expo-skill-eval fixture)" >&2; exit 1 ;;
20esac
21[[ -d "$APP" ]] || { echo "clean-fixture: $APP not found, skipping"; exit 0; }
22
23# Stop any Metro / Expo dev server that may still be running for this fixture.
24# The snapshot scripts' EXIT trap normally handles this, but cleaning up here
25# catches leftover processes from crashes or interrupted runs.
26# Ports 8081 (iOS) and 8082 (Android) are the two ports the eval harness
27# reserves — freeing them here is safe because clean-fixture.sh only runs after
28# all screenshots for this fixture have been captured.
29#
30# `-sTCP:LISTEN` is REQUIRED, not a refinement: without it, `lsof -ti tcp:8082`
31# also matches the *established* connection the adb daemon holds from the
32# `adb reverse tcp:8082` tunnel, and SIGKILLing the adb daemon crashes the
33# emulator with a gfxstream gRPC SIGABRT (std::bad_function_call). Keep the flag
34# so only the Metro listener is killed.
35lsof -ti tcp:8081 -sTCP:LISTEN 2>/dev/null | xargs kill -9 2>/dev/null || true
36lsof -ti tcp:8082 -sTCP:LISTEN 2>/dev/null | xargs kill -9 2>/dev/null || true
37
38# Per-fixture heavy dirs — all gitignored / regenerable (node_modules, the
39# prebuilt native projects incl. iOS Pods and Android Gradle output, caches).
40rm -rf \
41  "$APP/node_modules" \
42  "$APP/ios" \
43  "$APP/android" \
44  "$APP/.expo" \
45  "$APP/dist" \
46  "$APP/web-build" 2>/dev/null || true
47
48# iOS DerivedData for fixture builds. create-expo-app names the project
49# "fixture", so its build output lives under DerivedData/fixture-<hash>. This is
50# a cache (worst case a rebuild), so it's safe to drop between fixtures.
51if [[ "${EXPO_SKILL_EVAL_KEEP_DERIVEDDATA:-0}" != "1" ]]; then
52  DD="$HOME/Library/Developer/Xcode/DerivedData"
53  [[ -d "$DD" ]] && rm -rf "$DD"/fixture-* 2>/dev/null || true
54fi
55
56echo "cleaned fixture: $APP"