#!/bin/bash

pushd /etc/systemd/system

cat > pve-backup.service << EOF
[Unit]
Description=Backup PVE
OnFailure=systemd_email@%n.service

[Service]
Type=oneshot
EnvironmentFile=/etc/backup.env
ExecStart=/usr/bin/proxmox-backup-client backup etc.pxar:/etc root.pxar:/root var.pxar:/var usrlocal.pxar:/usr/local --all-file-systems
EOF

cat > pve-backup.timer << EOF
[Unit]
Description=Backup PVE

[Timer]
OnCalendar=daily
Persistent=true

[Install]
WantedBy=timers.target
EOF

cat > systemd_email@.service << EOF
[Unit]
Description=status email for %i to adminsys@grifon.fr

[Service]
Type=oneshot
ExecStart=/usr/local/bin/systemd-email adminsys@grifon.fr %i
User=postfix
Group=systemd-journal
EOF

popd

pushd /usr/local/bin

cat > systemd-email << EOF
#!/bin/sh

mail -a "From: systemd <root@\$(hostname -f)>" \
     -s "\$2 on \$(hostname -f)" \
     "\$1" <<EOM
\$(systemctl status --full "\$2")
EOM
EOF

chmod +x systemd-email

popd

cat > /etc/backup.env << EOF
PBS_PASSWORD='REDACTED'
PBS_FINGERPRINT='REDACTED'
PBS_REPOSITORY=grifon@pbs@pbs01.grifon.fr:zfs1t-grifon
EOF

chmod 600 /etc/backup.env
systemctl daemon-reload

systemctl enable --now pve-backup.timer
systemctl start pve-backup.service
systemctl start systemd_email@pve-backup.service.service