#!/bin/bash

# SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
# SPDX-FileCopyrightText: 2021-22 fosslinux <fosslinux@aussies.space>
# SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later

set -e

# shellcheck source=/dev/null
. .env

# shellcheck source=sysa/helpers.sh
. helpers.sh

create_sysb() {
    # Copy everything in
    echo "Creating sysb rootfs"
    sys_transfer /sysb_image /sysb gzip patch
    cp -rl /sysc /sysb_image/sysc_src
    echo "Creating sysb initramfs"
    gen_initramfs_list.sh -o "/boot/initramfs-sysb.cpio.gz" /sysb_image
    rm -rf /sysb /sysb_image # Cleanup
}

go_sysb() {
    if [ "${KERNEL_BOOTSTRAP}" = True ]; then
        kexec-linux "/dev/ram1" "/boot/linux-4.9.10" "/boot/initramfs-sysb.cpio.gz"
    else
        # Mount proc for kexec
        mkdir /proc /etc
        mount -t proc proc /proc
        # kexec time
        echo "Loading kernel + sysb initramfs using kexec"
        kexec -l "/boot/linux-4.9.10" --console-serial \
            --initrd="/boot/initramfs-sysb.cpio.gz" \
            --append="init=/init console=ttyS0"
        echo "kexecing into sysb"
        kexec -e
    fi
}

build automake-1.15.1

build binutils-2.30

# Build musl with fewer patches
build musl-1.1.24 binutils-rebuild.sh patches-pass3

# Rebuild tcc-musl using new musl
build tcc-0.9.27 tcc-musl-pass3.sh patches-musl-pass3

populate_device_nodes

build gcc-4.0.4 pass1.sh

build findutils-4.2.33

build musl-1.2.4

build linux-headers-5.10.41 '' '' linux-5.10.41

build gcc-4.0.4 pass2.sh

build util-linux-2.19.1

build e2fsprogs-1.45.7

build dhcpcd-10.0.1

build kbd-1.15

build make-3.82

build ed-1.4

build bc-1.07.1

if [ "${CHROOT}" = False ] || [ "${BUILD_KERNELS}" = True ]; then
    # Save because linux deletes all distfiles to save space
    cp "${DISTFILES}"/musl-1.2.4.tar.gz "${SOURCES}"/musl-1.2.4
fi

mkdir -p /sysc/distfiles
cp "${DISTFILES}"/curl-7.88.1.tar.bz2 /sysc/distfiles

# Clear up some RAM space
grep --no-filename '^build' "${SOURCES}"/run*.sh | grep -v musl-1.2.4 | sed "s/build //" | sed "s/ .*$//" | while read -r p ; do
    rm -rf "${SOURCES:?}/${p:?}"
done

if [ "${CHROOT}" = False ] || [ "${BUILD_KERNELS}" = True ]; then
    build kexec-linux-1.0.0

    build kexec-tools-2.0.22

    build linux-4.9.10
fi

build musl-1.2.4 '' no-patches

if [ "${CHROOT}" = False ]; then
    create_sysb
    go_sysb
else
    # In chroot mode transition directly into System C.
    SYSC=/sysc_image
    sys_transfer "${SYSC}" /sysc gzip patch
    if [ "${CHROOT_ONLY_SYSA}" != True ]; then
        exec chroot "${SYSC}" /init
    fi
fi