#!/usr/bin/env bash

set -euo pipefail

EXE_PATH="$1"
ARTIFACT_PATH="${2:-artifacts}"

if [ ! -f "$EXE_PATH" ]; then
    echo "Executable does not exist: $EXE_PATH"
    exit 1
fi

mkdir -p "$ARTIFACT_PATH"

declare -A PROCESSED

is_system_library() {
    local name
    name="$(basename "$1")"

    case "$name" in
        libc.so|libc.so.*)
            return 0
            ;;

        libm.so|libm.so.*)
            return 0
            ;;

        libpthread.so|libpthread.so.*)
            return 0
            ;;

        libdl.so|libdl.so.*)
            return 0
            ;;

        librt.so|librt.so.*)
            return 0
            ;;

        ld-linux*.so|ld-linux*.so.*)
            return 0
            ;;

        libgcc_s.so|libgcc_s.so.*)
            return 0
            ;;

        *)
            return 1
            ;;
    esac
}

get_dependencies() {
    local binary="$1"

    ldd "$binary" |
        awk '
            /=> \// {
                print $3
                next
            }

            /^\// {
                print $1
            }
        ' |
        sort -u
}

copy_dependency() {
    local dependency="$1"

    local requested_name
    requested_name="$(basename "$dependency")"

    local resolved_path
    resolved_path="$(readlink -f "$dependency")"

    local destination
    destination="$ARTIFACT_PATH/$requested_name"

    if [ ! -f "$destination" ]; then
        echo "Copying dependency: $dependency"
        cp "$resolved_path" "$destination"
    fi
}

copy_dependencies() {
    local binary="$1"

    while IFS= read -r dependency; do
        [ -z "$dependency" ] && continue
        [ ! -f "$dependency" ] && continue

        if [[ -n "${PROCESSED[$dependency]:-}" ]]; then
            continue
        fi

        PROCESSED["$dependency"]=1

        if is_system_library "$dependency"; then
            echo "Skipping Linux system dependency: $dependency"
            continue
        fi

        copy_dependency "$dependency"
        copy_dependencies "$dependency"

    done < <(get_dependencies "$binary")
}

copy_dependencies "$EXE_PATH"