#!/usr/bin/env bash
# Linux validation pipeline run inside the Ubuntu container. Mirrors
# .github/workflows/build.yml so a local docker run produces the same
# pass/fail signal as a CI push.
#
# Usage (invoked automatically as the container ENTRYPOINT):
#   docker run --rm -v "$PWD":/workspace:ro fold-linux-validate

set -euo pipefail

SRC=/workspace
BUILD=/build/release

if [ ! -d "$SRC" ]; then
    echo "ERROR: /workspace not mounted. Run with -v \"\$PWD\":/workspace:ro" >&2
    exit 2
fi

echo "==> Copying source into container (read-only mount → writable build dir)"
mkdir -p /build
# Copy without the host's build/, .git/, and any large cache dirs.
# Use rsync if available; fall back to cp.
if command -v rsync >/dev/null; then
    rsync -a \
        --exclude '/build' \
        --exclude '/.git' \
        --exclude '/.cache' \
        --exclude '/bench/results' \
        --exclude '*.o' \
        --exclude '*.json.gz' \
        "$SRC/" /build/src/
else
    cp -r "$SRC" /build/src
fi
cd /build/src

echo "==> Conan profile detect (clang-${LLVM_VERSION:-19})"
conan profile detect --force

echo "==> Conan install"
conan install . --output-folder="$BUILD" --build=missing \
    -s build_type=Release \
    -o build_tests=True

echo "==> Meson setup"
# Symlink z3.pc into the conan-generated build dir so pkg-config finds
# it through PKG_CONFIG_PATH. The path is arch-dependent
# (x86_64-linux-gnu on amd64, aarch64-linux-gnu on arm64 Docker
# Desktop), so probe both.
Z3_PC=""
for d in /usr/lib/x86_64-linux-gnu /usr/lib/aarch64-linux-gnu /usr/lib; do
    if [ -f "$d/pkgconfig/z3.pc" ]; then
        Z3_PC="$d/pkgconfig/z3.pc"
        break
    fi
done
if [ -n "$Z3_PC" ]; then
    ln -sf "$Z3_PC" "$BUILD/z3.pc"
    echo "    z3.pc -> $Z3_PC"
else
    echo "    WARNING: no z3.pc found under /usr/lib/*/pkgconfig" >&2
fi
# -Dcapstone=auto + --wrap-mode=default: build the Capstone gadget-discovery wrap
# when cmake/network allow, else degrade to the r2 /R search (no failure).
# --wrap-mode=default overrides the wrap_mode=nofallback in Conan's native file.
meson setup "$BUILD" \
    --native-file "$BUILD/conan_meson_native.ini" \
    --wrap-mode=default \
    -Dcpp_std=c++23 \
    -Dbuild-tests=true \
    -Dghidra=auto \
    -Dcapstone=auto \
    -Dllvm-config-path="$LLVM_CONFIG"

echo "==> Compile"
meson compile -C "$BUILD"

echo "==> Test"
meson test -C "$BUILD" --print-errorlogs

echo "==> Smoke (clone detector on fixture)"
"$BUILD/src/cli/fold" --version
"$BUILD/src/cli/fold" scan \
    tests/fixtures/clones \
    --std c++20 \
    --detectors clone \
    --format markdown --output /tmp/fold-smoke.md \
    --processes 1
head -30 /tmp/fold-smoke.md

echo "==> Linux validation OK"