load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "mongo_toolchain",
    build_file = "@//bazel/toolchains:mongo_toolchain.BUILD",
    patch_cmds = [
        # Alter each symlink to point to a canonical (rather than relative) path.
        r"""
        # Clear the log
        rm -f /tmp/ln_log.txt

        # For each symlink-to-a-file:
        for link in $(find v4 -type l -xtype f)
        do
            # cd into the link's directory
            export DIRNAME=$(dirname ${link})
            pushd ${DIRNAME}

            # Create a symlink to the target, with any ".XYZ" extension removed (e.g.: "/stow/gcc.ABC/" becomes "/stow/gcc/")
            export BASENAME=$(basename ${link})
            export ORIG_TARGET=$(readlink -f ${BASENAME})

            # The regex pattern below matches "/stow/", followed by 1+ non-dot characters (e.g.: "gcc"), a dot, and then 3 non-dot characters (e.g.: "xyz"), then a slash ('/').
            # Examples include "/stow/gcc.ABC/", "/stow/llvm.XYZ/", etc.
            export NEW_TARGET=$(echo "${ORIG_TARGET}" | sed -E 's~/(stow/[^\./]+)\.[^\./][^\./][^\./]/~/\1/~g');
            export LN_CMD="ln -frsv ${NEW_TARGET} ${BASENAME}"
            ${LN_CMD}
            echo -e "------------------------------------\ndirname is ${DIRNAME}\norig_target ${ORIG_TARGET}\nnew_target ${NEW_TARGET}\nln_cmd ${LN_CMD}\nln_cmd exit code $?" >> /tmp/ln_log.txt

            # Pop back out into the original directory
            popd
        done
        """,

        # Remove the extension (e.g.: `.gUP`) from the top-level stow directories.
        r"""find stow -maxdepth 1 -name "*\.*" -type d | while read NAME ; do mv "${NAME}" "${NAME%.*}" ; done""",

        # For each binary and shared library in the v4 toolchain, amend its rpath (https://en.wikipedia.org/wiki/Rpath) to include openssl and v4 libraries.
        r"""
        rm -f /tmp/patchelf_log.txt
        touch /tmp/patchelf_log.txt
        for f in $(find v4)
        do
            export PATCHELF_CMD="v4/bin/patchelf \
                --debug \
                --force-rpath \
                --set-rpath \$ORIGIN:\$ORIGIN/../../openssl/lib:\$ORIGIN/../../stow/openssl/lib:\$ORIGIN/../lib:\$ORIGIN/../../../../v4/lib \
                ${f}"
            echo -e "-------------------------------------\npatchelf_cmd ${PATCHELF_CMD}\n" >> /tmp/patchelf_log.txt
            ${PATCHELF_CMD} 2>>/tmp/patchelf_log.txt >>/tmp/patchelf_log.txt
            echo -e "patchelf_cmd exit code $?" >> /tmp/patchelf_log.txt
        done
        """,
    ],
    sha256 = "ba2856d0b18f7a9faa7b3c57876dc4f4e957b3da205f3f746e95aa450b3e4bfb",
    strip_prefix = "636d9a714d33020bd7948e252ba1bfed2e205c16",  # The tarball has a prefix which we do not need
    urls = [
        # v4 toolchain for ubuntu/arm64
        "https://mciuploads.s3.amazonaws.com/toolchain-builder/ubuntu2204-arm64/636d9a714d33020bd7948e252ba1bfed2e205c16/toolchain_builder_ubuntu2204_arm64_636d9a714d33020bd7948e252ba1bfed2e205c16_23_06_29_23_09_01.tar.gz",
    ],
)

register_toolchains(
    "@mongo_toolchain//:mongo_toolchain",
)