#!/usr/bin/env bash
#
set -euo pipefail
IFS=$'\n\t'
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

: ${SHELL:="NO"} # or YES to launch a shell instead of running the test
: ${TRACE:="NO"} # or YES to send traces to jaeger
: ${BACKTRACE:="NO"} # or YES to print a rust backtrace when panicking
: ${NO_COLOR:=""} # Set to anything to disable color output

REALPATH=$(command -v uu-realpath || command -v realpath)
MAKE=$(command -v gmake || command -v make)

############## Setup #########################

function die {
    local status_code="$1"
    shift
    (>&2 echo "${@}")
    exit "$status_code"
}

function log {
    (>&2 echo "${@}")
}

############## Program #########################

function main {
    build_container
    launch_container "${@}"
}

function build_container {
    $MAKE -C "$DIR/../docker/organic_test"
}

function launch_container {
    local additional_flags=()
    local features=(compare)

    if [ "$NO_COLOR" != "" ]; then
        additional_flags+=(--env "NO_COLOR=$NO_COLOR")
    fi

    if [ "$TRACE" = "YES" ]; then
        # We use the host network so it can talk to jaeger hosted at 127.0.0.1
        additional_flags+=(--network=host --env RUST_LOG=debug)
        features+=(tracing)
    fi

    if [ "$SHELL" != "YES" ]; then
        additional_flags+=(--read-only)
    else
        additional_flags+=(-t)
    fi

    if [ "$BACKTRACE" = "YES" ]; then
        additional_flags+=(--env RUST_BACKTRACE=full)
    fi

    if [ "$SHELL" = "YES" ]; then
        exec docker run "${additional_flags[@]}" --init --rm -i --mount type=tmpfs,destination=/tmp -v "/:/input:ro" -v "$($REALPATH "$DIR/../"):/source:ro" --mount source=cargo-cache,target=/usr/local/cargo/registry --mount source=rust-cache,target=/target --env CARGO_TARGET_DIR=/target -w /source --entrypoint "" organic-test /bin/sh
    fi

    local features_joined
    features_joined=$(IFS=","; echo "${features[*]}")

    if [ $# -gt 0 ]; then
        # If we passed in args, we need to forward them along
        for path in "${@}"; do
            local full_path
            full_path=$($REALPATH "$path")
            init_script=$(cat <<EOF
set -euo pipefail
IFS=\$'\n\t'

cargo build --bin compare --no-default-features --features "$features_joined"
exec /target/debug/compare "/input${full_path}"
EOF
                       )
            log "INIT SCRIPT: $init_script"
            docker run "${additional_flags[@]}" --init --rm -i --mount type=tmpfs,destination=/tmp -v "/:/input:ro"  -v "$($REALPATH "$DIR/../"):/source:ro" --mount source=cargo-cache,target=/usr/local/cargo/registry --mount source=rust-cache,target=/target --env CARGO_TARGET_DIR=/target -w /source --entrypoint "" organic-test sh -c "$init_script"
        done
    else
        local current_directory init_script
        current_directory=$(pwd)
        init_script=$(cat <<EOF
set -euo pipefail
IFS=\$'\n\t'

cargo build --bin compare --no-default-features --features "$features_joined"
cd /input${current_directory}
exec /target/debug/compare
EOF
                       )

        docker run "${additional_flags[@]}" --init --rm -i --mount type=tmpfs,destination=/tmp -v "/:/input:ro" -v "$($REALPATH "$DIR/../"):/source:ro" --mount source=cargo-cache,target=/usr/local/cargo/registry --mount source=rust-cache,target=/target --env CARGO_TARGET_DIR=/target -w /source --entrypoint "" organic-test sh -c "$init_script"
    fi
}

main "${@}"