#!/bin/bash

echo "==> makepkg-smart: got input "$@"" >&2

DEFAULT_BUILDDIR="/tmp/makepkg"

PERSIST_ROOT="$HOME/.cache/makepkg/build"

KEEP_PKGS="
neovim-bundled-git
"

pkgname_from_pkgbuild()
{
    local _pkgname pkgname
    pkgname="$(awk -F= '/^pkgname=/{gsub(/[()"]/,"",$2); print $2; exit}' PKGBUILD 2>/dev/null)"
    if echo "$pkgname" | grep -q "\$_pkgname" 2>/dev/null; then
        _pkgname="$(awk -F= '/^_pkgname=/{gsub(/[()"]/,"",$2); print $2; exit}' PKGBUILD 2>/dev/null)"
        echo "${pkgname//\$_pkgname/"$_pkgname"}"
    else
        echo "$pkgname"
    fi
}

PKGNAME="$(pkgname_from_pkgbuild)"

[ -z "$PKGNAME" ] && exec makepkg "$@"

KEEP=false
for p in $KEEP_PKGS; do
    [ "$PKGNAME" = "$p" ] && KEEP=true && break
done

if $KEEP; then
    export BUILDDIR="$PERSIST_ROOT/$PKGNAME"
    mkdir -p "$BUILDDIR"

    export CC=gcc
    export CXX=g++
    export CMAKE_C_COMPILER_LAUNCHER=ccache
    export CMAKE_CXX_COMPILER_LAUNCHER=ccache
    export CCACHE_DIR="$HOME/.cache/ccache"
    export CCACHE_BASEDIR="$PWD"
    export CCACHE_SLOPPINESS="time_macros"

    echo "==> makepkg-smart: using persistent BUILDDIR=$BUILDDIR with ccache" >&2
else
    export BUILDDIR="$DEFAULT_BUILDDIR"
fi

exec makepkg "$@"