setup

#!/bin/bash

BUILD_DIR="$(pwd)/build"

print_help() {
    cat << EOF
Usage: sh setup [OPTIONS]
Perform setup tasks.

Task-specifying options:
  -a perform all setup tasks
  -d install dependencies
  -g get GraalVM
  -o get OpenJDK
  -j get jfr-tests
  -t set toprc

Non-task-specifying options:
  -h print help

Optional environment variables:
  GRAALVM_URL the URL from which to download a prebuilt GraalVM
  OPENJDK_URL the URL from which to download a prebuilt OpenJDK
  JFR_TESTS_URL the URL with which to clone a jfr-tests Git repository
EOF
}

install_dependencies() {
    dnf -y install git tar maven gcc glibc-devel zlib-devel time
}

get_graalvm() {
    if [[ -z "$GRAALVM_URL" ]]; then
        GRAALVM_URL="https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java11-linux-amd64-dev.tar.gz"
    fi

    rm -rf "$BUILD_DIR"/graalvm*
    mkdir -p "$BUILD_DIR"/graalvm
    cd "$BUILD_DIR"

    curl -sL "$GRAALVM_URL" -o graalvm.tar.gz
    tar xf graalvm.tar.gz -C graalvm --strip-components=1
    cd -
}

get_openjdk() {
    if [[ -z "$OPENJDK_URL" ]]; then
        OPENJDK_URL="https://github.com/AdoptOpenJDK/openjdk11-upstream-binaries/releases/download/jdk-11.0.12%2B7/OpenJDK11U-jdk_x64_linux_11.0.12_7.tar.gz"
    fi

    rm -rf "$BUILD_DIR"/openjdk*
    mkdir -p "$BUILD_DIR"/openjdk
    cd "$BUILD_DIR"

    curl -sL "$OPENJDK_URL" -o openjdk.tar.gz
    tar xf openjdk.tar.gz -C openjdk --strip-components=1
    cd -
}

get_jfr_tests() {
    if [[ -z "$JFR_TESTS_URL" ]]; then
        JFR_TESTS_URL="https://github.com/rh-jmc-team/jfr-tests.git"
    fi
    rm -rf "$BUILD_DIR"/jfr-tests*
    mkdir -p "$BUILD_DIR"
    cd "$BUILD_DIR"
    git clone $JFR_TESTS_URL
    cd -
}

set_toprc() {
    mkdir -p ~/.config/procps
    cp toprc ~/.config/procps
}

while getopts "hadgojt" opt; do
    case "$opt" in
        h) print_help
            exit 0;;
        a) install_dependencies
            get_graalvm
            get_openjdk
            get_jfr_tests
            set_toprc
            break;;
        d) install_dependencies;;
        g) get_graalvm;;
        o) get_openjdk;;
        j) get_jfr_tests;;
        t) set_toprc;;
    esac
done