#!/bin/bash

# Small script to run tests for a target (or all targets) inside all the
# respective docker images.

set -euxo pipefail

host_arch="$(uname -m | sed 's/arm64/aarch64/')"

run() {
    local target=$1

    echo "testing target: $target"

    target_arch="$(echo "$target" | cut -d'-' -f1)"

    emulated=""
    if [ "$target_arch" != "$host_arch" ]; then
        emulated=1
        echo "target is emulated"
    fi

    # This directory needs to exist before calling docker, otherwise docker will create it but it
    # will be owned by root
    mkdir -p target

    set_env="HOME=/tmp PATH=\$PATH:/rust/bin:/cargo/bin"
    docker build -t "libm-$target" "ci/docker/$target"
    docker run \
        --rm \
        --user "$(id -u):$(id -g)" \
        -e CI \
        -e RUSTFLAGS \
        -e CARGO_TERM_COLOR \
        -e CARGO_HOME=/cargo \
        -e CARGO_TARGET_DIR=/target \
        -e "EMULATED=$emulated" \
        -v "${HOME}/.cargo:/cargo" \
        -v "$(pwd)/target:/target" \
        -v "$(pwd):/checkout:ro" \
        -v "$(rustc --print sysroot):/rust:ro" \
        --init \
        -w /checkout \
        "libm-$target" \
        sh -c "$set_env exec ci/run.sh $target"
}

if [ -z "$1" ]; then
    echo "running tests for all targets"

    for d in ci/docker/*; do
        run $d
    done
else
    run $1
fi