#!/bin/sh
set -eu

ROOT=$(CDPATH= cd -- "$(dirname "$0")/../.." && pwd)
BUILDER="$ROOT/core/scripts/build-xcframework.sh"
EXPECTED_EXPORTS='_verse_core_abi_version
_verse_core_cancel_v1
_verse_core_connect_v1
_verse_core_create_v1
_verse_core_destroy_v1
_verse_core_request_idr_v1
_verse_core_send_input_v1'

test "$(uname -s)" = Darwin
test "$(uname -m)" = arm64
test -x "$BUILDER"

WORK=$(mktemp -d "${TMPDIR:-/tmp}/versevdi-core-package.XXXXXX")
trap 'rm -rf "$WORK"' EXIT HUP INT TERM

"$BUILDER" --output "$WORK/one" --target-dir "$WORK/target-one"
"$BUILDER" --output "$WORK/two" --target-dir "$WORK/target-two"

framework_one="$WORK/one/VerseVDICore.xcframework"
framework_two="$WORK/two/VerseVDICore.xcframework"
library_one=$(find "$framework_one" -type f -name libversevdi_core.a -print)
library_two=$(find "$framework_two" -type f -name libversevdi_core.a -print)
test "$(printf '%s\n' "$library_one" | grep -c .)" -eq 1
test "$(printf '%s\n' "$library_two" | grep -c .)" -eq 1

test "$(/usr/libexec/PlistBuddy -c 'Print :AvailableLibraries:0:SupportedPlatform' "$framework_one/Info.plist")" = macos
test "$(/usr/libexec/PlistBuddy -c 'Print :AvailableLibraries:0:SupportedArchitectures:0' "$framework_one/Info.plist")" = arm64
test "$(/usr/libexec/PlistBuddy -c 'Print :AvailableLibraries' "$framework_one/Info.plist" | grep -c 'Dict {')" -eq 1
test "$(xcrun lipo -archs "$library_one")" = arm64
file "$library_one" | grep -F 'current ar archive' >/dev/null

consumer="$WORK/consumer"
xcrun clang \
    -arch arm64 \
    -mmacosx-version-min=14.0 \
    -std=c11 \
    -Wall -Wextra -Werror -Wpedantic \
    -fmodules \
    -fmodules-cache-path="$WORK/module-cache" \
    -I"$(dirname "$library_one")/Headers" \
    "$ROOT/core/tests/ffi/abi_smoke.c" \
    "$library_one" \
    -framework Security \
    -framework SystemConfiguration \
    -framework CoreFoundation \
    -lresolv \
    -o "$consumer"
test "$(xcrun lipo -archs "$consumer")" = arm64
file "$consumer" | grep -F 'Mach-O 64-bit executable arm64' >/dev/null

symbols=$(xcrun nm -gjU "$consumer")
actual_exports=$(printf '%s\n' "$symbols" | grep '^_verse_core_' | LC_ALL=C sort -u)
test "$actual_exports" = "$EXPECTED_EXPORTS"

dependencies=$(xcrun otool -L "$consumer")
unexpected_dependencies=$(printf '%s\n' "$dependencies" | tail -n +2 | awk '{print $1}' | grep -Ev '^(/usr/lib/(libSystem\.B|libresolv\.9)\.dylib|/System/Library/Frameworks/(CoreFoundation|Security|SystemConfiguration)\.framework/Versions/A/[^/]+)$' || true)
test -z "$unexpected_dependencies"

"$consumer"
i=0
pids=
while test "$i" -lt 32; do
    "$consumer" &
    pids="$pids $!"
    i=$((i + 1))
done
for pid in $pids; do
    wait "$pid"
done

canonical_tree() {
    (
        cd "$1"
        find . -type f -print | LC_ALL=C sort | while IFS= read -r path; do
            digest=$(shasum -a 256 "$path" | awk '{print $1}')
            printf '%s  %s\n' "$digest" "$path"
        done
    )
}

canonical_tree "$framework_one" >"$WORK/one.tree"
canonical_tree "$framework_two" >"$WORK/two.tree"
cmp "$WORK/one.tree" "$WORK/two.tree"
test "$(shasum -a 256 "$library_one" | awk '{print $1}')" = "$(shasum -a 256 "$library_two" | awk '{print $1}')"

source_epoch=$(git -C "$ROOT" show -s --format=%ct HEAD)
find "$framework_one" -exec stat -f '%m' {} \; | while IFS= read -r epoch; do
    test "$epoch" = "$source_epoch"
done

strings "$library_one" >"$WORK/library.strings"
if grep -F "$ROOT" "$WORK/library.strings" >/dev/null; then
    echo "repository path leaked into static archive" >&2
    exit 1
fi

archive_members=$(xcrun ar -tv "$library_one")
printf '%s\n' "$archive_members" | awk '$7 != "1970" { exit 1 }'

printf 'framework_sha256=%s\n' "$(shasum -a 256 "$WORK/one.tree" | awk '{print $1}')"
printf 'library_sha256=%s\n' "$(shasum -a 256 "$library_one" | awk '{print $1}')"