#!/usr/bin/env bash
#
# Local test runner (no hosted CI). Runs the unit tests and a smoke test
# natively, then — when Docker is available — repeats them for the Linux
# x86_64-musl release target inside a container, so both targets can be
# validated from any host without a CI runner.
#
# Usage:
#   scripts/test.sh            # native tests + Docker linux/musl (if Docker present)
#   scripts/test.sh --no-docker  # native only
#
set -euo pipefail

cd "$(dirname "$0")/.."

use_docker=1
[ "${1:-}" = "--no-docker" ] && use_docker=0

# --- helpers ---------------------------------------------------------------

smoke() {
    # $1 = path to a fsdecrypt binary
    local bin="$1"
    "$bin" --version
    local junk
    junk="$(mktemp --suffix=.app 2>/dev/null || echo "${TMPDIR:-/tmp}/fsd_junk.app")"
    head -c 4096 /dev/urandom > "$junk"
    # Garbage input must fail gracefully (non-zero exit), never panic.
    if "$bin" "$junk"; then
        echo "ERROR: expected a non-zero exit on garbage input" >&2
        rm -f "$junk"; return 1
    fi
    rm -f "$junk"
    echo "smoke test passed"
}

# --- native ----------------------------------------------------------------

echo "==> cargo test (native)"
cargo test --locked

echo "==> cargo build --release (native)"
cargo build --release --locked

native_bin="target/release/fsdecrypt"
[ -f "$native_bin.exe" ] && native_bin="$native_bin.exe"
echo "==> smoke test (native)"
smoke "$native_bin"

# --- Linux x86_64-musl via Docker ------------------------------------------

if [ "$use_docker" = "1" ] && command -v docker >/dev/null 2>&1; then
    echo "==> Docker: cargo test + release build for x86_64-unknown-linux-musl"
    # Use a docker-friendly host path (Git Bash on Windows needs the C:/... form).
    host_path="$PWD"
    case "$(uname -s)" in
        MINGW*|MSYS*|CYGWIN*) host_path="$(pwd -W)" ;;
    esac
    MSYS_NO_PATHCONV=1 docker run --rm \
        -v "$host_path:/volume" -w /volume \
        -e CARGO_TARGET_DIR=/volume/target-musl \
        clux/muslrust:stable \
        bash -c '
            set -e
            cargo test --locked
            cargo build --release --locked
        '
    echo "==> smoke test (linux/musl)"
    MSYS_NO_PATHCONV=1 docker run --rm \
        -v "$host_path:/volume" -w /volume \
        clux/muslrust:stable \
        ./target-musl/x86_64-unknown-linux-musl/release/fsdecrypt --version
    echo "linux/musl checks passed"
elif [ "$use_docker" = "1" ]; then
    echo "==> Docker not found — skipping Linux/musl checks (run with --no-docker to silence)"
fi

echo "All checks passed."