#!/bin/bash
# Does the teardown still say what it left behind, after deleting the thing it
# reads that from?
#
#   scripts/dev/lp-uninstall-report-test
#
# A full uninstall removes the primary containers root and everything in it, but
# app data on an ADDITIONAL storage location survives. Leaving it is right —
# deleting someone's data off a separate disk unasked is worse — but saying
# nothing about it is not, especially as those directories end up owned by a uid
# that stops mapping to a user once the container account is gone.
#
# The report reads the storage registry, which lives INSIDE the helpers
# directory the same function deletes. Written after that deletion it found an
# empty registry and printed nothing: the exact silence it exists to prevent,
# and indistinguishable from "there was nothing left". So what this guards is
# not the wording but the ORDER — the capture has to happen before the delete.
#
# Runs the real fragments from init.sh with the deletion between them.

REPO="$(cd "$(dirname "$0")/../.." && pwd)"
BASE="$(mktemp -d "${TMPDIR:-/tmp}/lp-unreport-XXXXXX")"
trap 'rm -rf "$BASE"' EXIT

fail=0
chk(){ if [[ "$2" == "$3" ]]; then echo "  ok   $1"; else echo "  FAIL $1: got '$2' want '$3'"; fail=1; fi; }

CAPTURE=$(awk '/^\t# The storage registry lives inside the helpers directory/,/^\tfi$/' "$REPO/init.sh")
REPORT=$(awk '/^\t# App data on an ADDITIONAL storage location is not removed/,/^\tfi$/' "$REPO/init.sh")
[[ -n "$CAPTURE" ]] || { echo "  FAIL could not extract the capture block from init.sh"; exit 1; }
[[ -n "$REPORT"  ]] || { echo "  FAIL could not extract the report block from init.sh"; exit 1; }

# A registry where the helpers live, and data on one of the two locations.
mkdir -p "$BASE/lib" "$BASE/loc1/appA" "$BASE/loc1/appB" "$BASE/loc2" "$BASE/gone"
printf '1\t%s\t1\tuuid\n2\t%s\t2\tuuid\n3\t%s\t3\tuuid\n' \
    "$BASE/loc1" "$BASE/loc2" "$BASE/nonexistent" > "$BASE/lib/storage.roots"

run() {
    local tmp; tmp=$(mktemp)
    {
        echo 'isNotice(){ echo "NOTICE: $*"; }'
        # The real paths are absolute; point them at the fixture.
        printf '%s\n' "$CAPTURE" | sed "s#/usr/local/lib/libreportal#$BASE/lib#g"
        # The deletion that sits between them in the real function.
        echo "rm -rf \"$BASE/lib\""
        printf '%s\n' "$REPORT"
    } > "$tmp"
    bash "$tmp" 2>&1
    rm -f "$tmp"
}

out=$(run)

echo "--- it reports what survived, after the registry is gone ---"
chk "registry really was deleted" "$([[ -e "$BASE/lib" ]] && echo yes || echo no)" "no"
chk "says something"        "$(grep -c 'App data left' <<< "$out")" "1"
chk "names the location"    "$(grep -c "$BASE/loc1" <<< "$out")" "1"
chk "counts its apps"       "$(grep -c '2 app directories' <<< "$out")" "1"

echo "--- and stays quiet about locations with nothing on them ---"
chk "empty location omitted"   "$(grep -c "$BASE/loc2" <<< "$out")" "0"
chk "missing path omitted"     "$(grep -c 'nonexistent' <<< "$out")" "0"

echo "--- nothing left anywhere: no report at all ---"
rm -rf "$BASE/loc1/appA" "$BASE/loc1/appB"
mkdir -p "$BASE/lib"
printf '1\t%s\t1\tuuid\n' "$BASE/loc1" > "$BASE/lib/storage.roots"
out=$(run)
chk "silent when there is nothing to say" "$(grep -c 'App data left' <<< "$out")" "0"

echo ""
if (( fail )); then echo "FAILED"; exit 1; fi
echo "All uninstall-report checks passed."