yalda

#!/usr/bin/env bash

export environment="$1"
export component="$2"
export action="$3"

source "$environment"

function get_conf_var {
    local conf="$1"
    local comp="${component}"
    if [ ! "$2" == "" ]; then
        comp="$2"
    fi

    local component_varname="${comp^^}_${conf^^}"
    echo "${!component_varname}"
}

component_dir="$(get_conf_var dir)"
component_git="$(get_conf_var git)"
component_branch="$(get_conf_var branch)"
component_source="$(get_conf_var source)"
component_patch="$(get_conf_var patch)"
component_patches_dir="$(get_conf_var patches_dir)"
component_configure="$(get_conf_var configure)"
component_build="$(get_conf_var build)"
component_run="$(get_conf_var run)"

component_out="$(get_conf_var out_${component} yalda)"

# TODO: redesign rootfs output
component_out_rootfs="${component_out}/rootfs"
if [ "${component}" == "rootfs" ]; then
    component_out_rootfs="${component_out}"
fi

function component_fetch {
    if [ -d "${component_dir}" ]; then
        rm -rf "${component_dir}"
    fi
    git clone -b "${component_branch}" --depth 1 "${component_git}" "${component_dir}"
}

function component_patch {
    export QUILT_PATCHES=${component_patches_dir}
    echo 'Patching...'
    quilt unapplied && quilt push -a
}

function component_build {
    if [ ! "${component_build}" == "y" ]; then
        return
    fi

    if [ "${component_source}" == "git" ]; then
        component_fetch
    fi

    if [ ! -d "${component_dir}" ]; then
        echo "WARNING! ${component_dir} does not exist, skipping"
        exit 1
    fi

    chdir "${component_dir}"

    if [ "${component_configure}" == "y" ]; then
        _configure
    fi

    if [ "${component_patch}" == "y" ]; then
        component_patch
    fi

    _build

    rm -rf "${component_out}"
    mkdir -pv "${component_out}" "${component_out_rootfs}"

    _install
}


function component_run {
    _run
}

function component_clean {
    chdir "${component_dir}"
    _clean
}

function command_execute {
    component_${action}

    return
}

command_execute