#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	ynh_exec_warn_less popd

	ynh_secure_remove --file="$go_tmp"
	ynh_secure_remove --file="$lxd_tmp"
}

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..."

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=5

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --source_id="go" --dest_dir="$install_dir/go"

export PATH="$install_dir/go/bin:$PATH"

ynh_setup_source  --source_id="lxd" --dest_dir="$install_dir/lxd"

export GOPATH="$install_dir/lxd/vendor/"

#=================================================
# SPECIFIC SETUP
#=================================================
# BUILD FROM SOURCES
#=================================================
ynh_script_progression --message="Building lxd from sources..." --weight=60

pushd "$install_dir/lxd"
	export HOME=${HOME:-"/root/"}

	ynh_exec_warn_less make deps
	export CGO_CFLAGS="-I${GOPATH}/raft/include/ -I${GOPATH}/dqlite/include/"
	export CGO_LDFLAGS="-L${GOPATH}/raft/.libs -L${GOPATH}/dqlite/.libs/"
	export LD_LIBRARY_PATH="${GOPATH}/raft/.libs/:${GOPATH}/dqlite/.libs/"
	export CGO_LDFLAGS_ALLOW="(-Wl,-wrap,pthread_create)|(-Wl,-z,now)"

	ynh_exec_warn_less make

	mkdir -p /usr/local/lib/$app
	mkdir -p /var/log/$app
	cp -a ${GOPATH}/{raft,dqlite}/.libs/lib*.so* /usr/local/lib/$app/
	cp ${GOPATH}/bin/{fuidshift,lxc,lxc-to-lxd,lxd,lxd-agent,lxd-benchmark,lxd-migrate,lxd-user} /usr/local/bin
	cp $install_dir/lxd/scripts/bash/lxd-client /etc/bash_completion.d/
popd

ynh_secure_remove --file="$install_dir/go"
ynh_secure_remove --file="$install_dir/lxd"

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..."

# TODO: handle this as a system config
echo "bind-interfaces
except-interface=lxdbr0" > /etc/dnsmasq.d/lxd
systemctl restart dnsmasq

ynh_store_file_checksum --file="/etc/dnsmasq.d/lxd"

# TODO: handle this as a system config
echo "/usr/local/lib/$app/" > /etc/ld.so.conf.d/$app.conf
ynh_store_file_checksum --file="/etc/ld.so.conf.d/$app.conf"

ldconfig

echo "# Added by lxd
root:100000:65536" | tee -a /etc/subuid /etc/subgid

#=================================================
# SYSTEM CONFIGURATION
#=================================================
ynh_script_progression --message="Adding system configurations related to $app..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_socket_config
ynh_add_systemd_config

yunohost service add "$app" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

# Start a systemd service
ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of $app completed" --last