{ self, pkgs, hostName, config, hostConfig, ... }:
with pkgs;
with lib;
let
  ports = self.lib.getOpenwrtPorts hostConfig.model;

  uciDeleteAll = key: ''
    while uci -q delete ${key}[-1]; do :; done
  '';

  uciNetworkMgmt = ifname: ''
    set network.mgmt=interface
    set network.mgmt.ifname=${ifname}
    set network.mgmt.proto=static
    set network.mgmt.ipaddr=${config.site.net.mgmt.hosts4.${hostName}}
    set network.mgmt.netmask=${self.lib.netmasks.${elemAt (
      builtins.split "/" config.site.net.mgmt.subnet4
    ) 2}}
    set network.mgmt.gateway=${config.site.net.mgmt.hosts4."mgmt-gw"}
    set network.mgmt.ip6addr=${config.site.net.mgmt.hosts6.dn42.${hostName}}
    set network.mgmt.ip6gw=${config.site.net.mgmt.hosts6.dn42."mgmt-gw"}
    delete network.mgmt.dns
    add_list network.mgmt.dns={{ pillar['hosts-inet']['serv']['dnscache'] }}
    add_list network.mgmt.dns={{ pillar['hosts-inet6']['dn42']['serv']['dnscache'] }}
  '';
in ''
  #! ${pkgs.runtimeShell} -e

  ${if hostConfig.firstboot
    then ''
      ssh-keygen -R 192.168.1.1
      ssh root@192.168.1.1 \
        "ash -e -x" <<__SSH__
    '' else ''
      ssh root@{{ pillar['hosts-inet']['mgmt'][hostName] }} \
        "ash -e -x" <<__SSH__
    ''}

    # Set root password
    echo -e '${hostConfig.password}\n${hostConfig.password}' | passwd

    # add ssh pubkeys
    ${concatMapStrings (sshPubKey: ''
      echo "${sshPubKey}" > /etc/dropbear/authorized_keys
    '') config.site.sshPubKeys}

    # System configuration
    uci batch <<__UCI__
    set system.@system[0].hostName=${hostName}
    set dhcp.@dnsmasq[0].enabled=0
    set system.@system[0].log_ip=${config.site.net.mgmt.hosts4.logging}
    set system.@system[0].log_proto=udp

    delete network.globals.ula_prefix
    delete network.lan
    delete network.wan
    delete network.wan6
    delete wireless.default_radio0
    delete wireless.default_radio1

{%- set bridges = {} %}
{%- if conf.get('lan-access') %}
{%-   do bridges.__setitem__(conf['lan-access'], True) %}
{%- endif %}
{%- for path, radio in conf['radios'].items() %}
{%-   for ssid, ssidconf in radio['ssids'].items() %}
{%-     do bridges.__setitem__(ssidconf['net'], True) %}
{%-   endfor %}
{%- endfor %}

{%- if conf['model'] == 'TL-WDR4300' %}
{# These models have a shared Ethernet chip for LAN/WAN and therefore need switching #}
set network.@switch[0]=switch
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=1
set network.@switch[0].name=switch0
set network.@switch_vlan[0]=switch_vlan
set network.@switch_vlan[0].device='switch0'
set network.@switch_vlan[0].vlan='1'
set network.@switch_vlan[0].ports='0t 1t'
set network.@switch_vlan[0].comment='mgmt'
{%-   for net, switchnum in zip(bridges.keys(), range(1, 999)) %}
set network.@switch_vlan[{{ switchnum }}]=switch_vlan
set network.@switch_vlan[{{ switchnum }}].device='switch0'
set network.@switch_vlan[{{ switchnum }}].vlan='{{ pillar['vlans'][net] }}'
{%-     if conf.get('lan-access') == net %}
set network.@switch_vlan[{{ switchnum }}].ports='0t 1t 2 3 4 5'
{%-     else %}
set network.@switch_vlan[{{ switchnum }}].ports='0t 1t'
{%-     endif %}
set network.@switch_vlan[{{ switchnum }}].comment='{{ net }}'
{%- endfor %}

${uciNetworkMgmt "eth0.1"}

{%- for net in bridges.keys() %}
set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
set network.{{ net }}.ifname='eth0.{{ pillar['vlans'][net] }}'
{%- endfor %}

{%- elif conf['model'] == 'TL-WR1043ND' %}
{# These models have a shared Ethernet chip with separate CPU ports for LAN/WAN and therefore need switching #}
set network.@switch[0]=switch
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=1
set network.@switch[0].name=switch0
set network.@switch_vlan[0]=switch_vlan
set network.@switch_vlan[0].device='switch0'
set network.@switch_vlan[0].vlan='1'
set network.@switch_vlan[0].ports='5t 6t'
set network.@switch_vlan[0].comment='mgmt'
{%-   for net, switchnum in zip(bridges.keys(), range(1, 999)) %}
set network.@switch_vlan[{{ switchnum }}]=switch_vlan
set network.@switch_vlan[{{ switchnum }}].device='switch0'
set network.@switch_vlan[{{ switchnum }}].vlan='{{ pillar['vlans'][net] }}'
# 0: eth1; 1-4: LAN ports in reverse; 5: WAN port; 6: eth0
{%-     if conf.get('lan-access') == net %}
set network.@switch_vlan[{{ switchnum }}].ports='0 1 2 3 4 5t'
{%-     else %}
set network.@switch_vlan[{{ switchnum }}].ports='5t 6t'
{%-     endif %}
set network.@switch_vlan[{{ switchnum }}].comment='{{ net }}'
{%- endfor %}

${uciNetworkMgmt "eth0.1"}

{%- for net in bridges.keys() %}
set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{%-   if conf.get('lan-access') == net %}
set network.{{ net }}.ifname='eth1'
{%-     else %}
set network.{{ net }}.ifname='eth0.{{ pillar['vlans'][net] }}'
{%-   endif %}
{%- endfor %}

{%- elif conf['model'] == 'TL-Archer-C7v2' %}
{# These models have a shared Ethernet chip with separate CPU ports for LAN/WAN and therefore need switching #}
set network.@switch[0]=switch
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=1
set network.@switch[0].name=switch0
set network.@switch_vlan[0]=switch_vlan
set network.@switch_vlan[0].device='switch0'
set network.@switch_vlan[0].vlan='1'
set network.@switch_vlan[0].ports='1t 6t'
set network.@switch_vlan[0].comment='mgmt'
{%-   for net, switchnum in zip(bridges.keys(), range(1, 999)) %}
set network.@switch_vlan[{{ switchnum }}]=switch_vlan
set network.@switch_vlan[{{ switchnum }}].device='switch0'
set network.@switch_vlan[{{ switchnum }}].vlan='{{ pillar['vlans'][net] }}'
# 0: eth1; 1: WAN port; 2-5: LAN ports; 6: eth0
{%-     if conf.get('lan-access') == net %}
set network.@switch_vlan[{{ switchnum }}].ports='0 1t 2 3 4 5'
{%-     else %}
set network.@switch_vlan[{{ switchnum }}].ports='1t 6t'
{%-     endif %}
set network.@switch_vlan[{{ switchnum }}].comment='{{ net }}'
{%- endfor %}

${uciNetworkMgmt "eth0.1"}

{%- for net in bridges.keys() %}
set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{%-   if conf.get('lan-access') == net %}
set network.{{ net }}.ifname='eth1'
{%-     else %}
set network.{{ net }}.ifname='eth0.{{ pillar['vlans'][net] }}'
{%-   endif %}
{%- endfor %}

{%- elif conf['model'] == 'TL-Archer-C7v4' or conf['model'] == 'TL-Archer-C7v5' %}
set network.@switch[0]=switch
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=1
set network.@switch[0].name=switch0
set network.@switch_vlan[0]=switch_vlan
set network.@switch_vlan[0].device='switch0'
set network.@switch_vlan[0].vlan='1'
set network.@switch_vlan[0].ports='0t 1t'
set network.@switch_vlan[0].comment='mgmt'
{%-   for net, switchnum in zip(bridges.keys(), range(1, 999)) %}
set network.@switch_vlan[{{ switchnum }}]=switch_vlan
set network.@switch_vlan[{{ switchnum }}].device='switch0'
set network.@switch_vlan[{{ switchnum }}].vlan='{{ pillar['vlans'][net] }}'
# 0: eth0; 1: WAN port; 2-5: LAN ports
{%-     if conf.get('lan-access') == net %}
set network.@switch_vlan[{{ switchnum }}].ports='0t 1t 2 3 4 5'
{%-     else %}
set network.@switch_vlan[{{ switchnum }}].ports='0t 1t'
{%-     endif %}
set network.@switch_vlan[{{ switchnum }}].comment='{{ net }}'
{%- endfor %}

${uciNetworkMgmt "eth0.1"}

{%- for net in bridges.keys() %}
set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
set network.{{ net }}.ifname='eth0.{{ pillar['vlans'][net] }}'
{%- endfor %}

{%- elif conf['model'] == 'TL-WR1043NDv4' or conf['model'] == 'TL-WR1043NDv5' %}
set network.@switch[0]=switch
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=1
set network.@switch[0].name=switch0
set network.@switch_vlan[0]=switch_vlan
set network.@switch_vlan[0].device='switch0'
set network.@switch_vlan[0].vlan='1'
set network.@switch_vlan[0].ports='0t 5t'
set network.@switch_vlan[0].comment='mgmt'
{%-   for net, switchnum in zip(bridges.keys(), range(1, 999)) %}
set network.@switch_vlan[{{ switchnum }}]=switch_vlan
set network.@switch_vlan[{{ switchnum }}].device='switch0'
set network.@switch_vlan[{{ switchnum }}].vlan='{{ pillar['vlans'][net] }}'
# 0: eth0; 1-4: LAN ports; 5: WAN port
{%-     if conf.get('lan-access') == net %}
set network.@switch_vlan[{{ switchnum }}].ports='0t 1 2 3 4 5t'
{%-     else %}
set network.@switch_vlan[{{ switchnum }}].ports='0t 5t'
{%-     endif %}
set network.@switch_vlan[{{ switchnum }}].comment='{{ net }}'
{%- endfor %}

${uciNetworkMgmt "eth0.1"}

{%- for net in bridges.keys() %}
set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
set network.{{ net }}.ifname='eth0.{{ pillar['vlans'][net] }}'
{%- endfor %}

{%- elif conf['model'] == 'TL-WR841Nv8' %}
{# Like v9 but with eth0/1 switched #}
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=0

${uciNetworkMgmt "eth0.1"}

{%-   for net in bridges.keys() %}

set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{# Add WAN VLAN to bridge #}
{%-     set ports = ['eth0.' ~ pillar['vlans'][net]] %}
{# Add LAN ports to bridge #}
{%-     if conf.get('lan-access') == net %}
{%-       do ports.append('eth1') %}
{%-     endif %}

set network.{{ net }}.ifname='{{ ' '.join(ports) }}'
{%-   endfor %}

{%- elif conf['model'] == 'TL-WR740Nv4' %}
{# Separate eth0/1 interfaces for LAN/WAN #}
{# eth0 - Port 0: eth0, Port 2: LAN1, Port 3: LAN2, Port 4: LAN3, Port 1: LAN4 #}
{# eth1 - WAN #}
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=0

${uciNetworkMgmt "eth1.1"}

{%-   for net in bridges.keys() %}

set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{# Add WAN VLAN to bridge #}
{%-     set ports = ['eth1.' ~ pillar['vlans'][net]] %}
{# Add LAN ports to bridge #}
{%-     if conf.get('lan-access') == net %}
{%-       do ports.append('eth0') %}
{%-     endif %}

set network.{{ net }}.ifname='{{ ' '.join(ports) }}'
{%-   endfor %}

{%- elif conf['model'] == 'TL-WA901NDv3' or conf['model'] == 'Ubnt-UniFi-AP-AC-LR' %}
{# Only eth0 exists, no switch #}

${uciNetworkMgmt "eth0.1"}

{%-   for net in bridges.keys() %}

set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{# Add WAN VLAN to bridge #}
set network.{{ net }}.ifname='{{ 'eth0.' ~ pillar['vlans'][net] }}'
{%-   endfor %}

{%- elif conf['model'] == 'Ubnt-UAP-nanoHD' %}
{# no switch, eth0 exists but is not usable, using "lan" instead #}

${uciNetworkMgmt "lan.1"}

{%-   for net in bridges.keys() %}

set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{# Add WAN VLAN to bridge #}
set network.{{ net }}.ifname='{{ 'lan.' ~ pillar['vlans'][net] }}'
{%-   endfor %}

{%- elif conf['model'] == 'DIR-615H1' or conf['model'] == 'DIR-615D4' %}
{# All DIR-615 share the same port layout #}
delete network.lan_dev
delete network.wan_dev
{# switch is cpu port 6, wan:cpu port 4, lan port 1 is cpu port 3, lan port 2 is 2 etc #}
set network.@switch[0]=switch
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=1
set network.@switch[0].name=switch0
set network.@switch_vlan[0]=switch_vlan
set network.@switch_vlan[0].device='switch0'
set network.@switch_vlan[0].vlan='1'
set network.@switch_vlan[0].ports='4t 6t'
set network.@switch_vlan[0].comment='mgmt'
{%-   for net, switchnum in zip(bridges.keys(), range(1, 999)) %}
set network.@switch_vlan[{{ switchnum }}]=switch_vlan
set network.@switch_vlan[{{ switchnum }}].device='switch0'
set network.@switch_vlan[{{ switchnum }}].vlan='{{ pillar['vlans'][net] }}'
{%-     if conf.get('lan-access') == net %}
set network.@switch_vlan[{{ switchnum }}].ports='0 1 2 3 4t 6t'
{%-     else %}
set network.@switch_vlan[{{ switchnum }}].ports='4t 6t'
{%-     endif %}
set network.@switch_vlan[{{ switchnum }}].comment='{{ net }}'
{%- endfor %}

${uciNetworkMgmt "eth0.1"}

{%- for net in bridges.keys() %}
set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
#TODO: this should consider lan-access
set network.{{ net }}.ifname='eth0.{{ pillar['vlans'][net] }}'
{%- endfor %}

{%- else %}
{# All other models may have separate Ethernet chips for LAN/WAN #}
set network.@switch[0].reset=1
set network.@switch[0].enable=1
set network.@switch[0].enable_vlan=0

${uciNetworkMgmt "eth1.1"}

{%-   for net in bridges.keys() %}

set network.{{ net }}=interface
set network.{{ net }}.type=bridge
set network.{{ net }}.proto=static
{# Add WAN VLAN to bridge #}
{%-     set ports = ['eth1.' ~ pillar['vlans'][net]] %}
{# Add LAN ports to bridge #}
{%-     if conf.get('lan-access') == net %}
{%-       do ports.append('eth0') %}
{%-     endif %}

set network.{{ net }}.ifname='{{ ' '.join(ports) }}'
{%-   endfor %}

{%- endif %}

  ${uciDeleteAll "wireless.@wifi"}

  ${concatStrings (imap0 (index: path:
    let
      radioConfig = hostConfig.wifi.${path};
      ifPrefix = if radioConfig.channel < 15
                 then "wlan2"
                 else "wlan5";
    in ''
      set wireless.radio${toString index}=wifi-device
      set wireless.radio${toString index}=wifi-device
      set wireless.radio${toString index}.type=mac80211
      set wireless.radio${toString index}.country=DE
      set wireless.radio${toString index}.channel=${toString radioConfig.channel}
      set wireless.radio${toString index}.path=${path}
      set wireless.radio${toString index}.htmode=${radioConfig.htmode}
      set wireless.radio${toString index}.noscan=1
      delete wireless.radio${toString index}.disabled
      ${concatMapStrings (ssid:
        let
          ssidConfig = radioConfig.ssids.${ssid};
        in ''
          add wireless wifi
          set wireless.@wifi-iface[-1].ifname=${ifPrefix}-${ssidConfig.net}
          set wireless.@wifi-iface[-1].device=radio${toString index}
          set wireless.@wifi-iface[-1].ssid='${ssid}'
          set wireless.@wifi-iface[-1].mode=ap
          set wireless.@wifi-iface[-1].network=${ssidConfig.net}
          set wireless.@wifi-iface[-1].mcast_rate=18000
          ${if (ssidConfig.psk != null)
            then ''
              set wireless.@wifi-iface[-1].encryption=psk2
              set wireless.@wifi-iface[-1].key='${ssidConfig.psk}'
            ''
            else ''
              set wireless.@wifi-iface[-1].encryption=none
              delete wireless.@wifi-iface[-1].key
            ''}
        ''
      ) (builtins.attrNames radioConfig.ssids)}
    '') (builtins.attrNames hostConfig.wifi))}

  commit
  __UCI__

  # Cronjob that makes sure WiFi is only visible when server with all
  # the gateways is reachable
  cat >/etc/crontabs/root <<__CRON__
  * * * * *	/usr/sbin/wifi-on-link.sh
  __CRON__
  cat >/usr/sbin/wifi-on-link.sh <<__SH__
  #!/bin/sh

  if (ping -c 1 -W 3 {{ pillar['hosts-inet']['mgmt']['mgmt-gw'] }}) ; then
    REACHABLE=y
  else
    REACHABLE=n
  fi

  if [ "\\\$(cat /sys/class/net/wlan2-pub/operstate)" == "up" ] ; then
    UP=y
  else
    UP=n
  fi

  {%- if conf.get("error-led") %}
    ERROR_LED=/sys/class/leds/{{ conf["error-led"] }}/brightness
    [ \\\$REACHABLE = y ] && echo 0 > \\\$ERROR_LED
    [ \\\$REACHABLE = n ] && echo 1 > \\\$ERROR_LED
  {%- endif %}

  [ \\\$REACHABLE = y ] && [ \\\$UP = n ] && wifi up
  [ \\\$REACHABLE = n ] && [ \\\$UP = y ] && wifi down

  exit 0
  __SH__
  chmod a+rx /usr/sbin/wifi-on-link.sh
  /etc/init.d/cron restart

  for svc in dnsmasq uhttpd ; do
    rm /etc/rc.d/*\$svc
    /etc/init.d/\$svc stop
  done

  ${lib.optionalString hostConfig.firstboot "reboot"}
  __SSH__

  echo "Base configuration done \\o/"
  echo "Later run: `dirname $0`/ap_install_collectd.sh ${config.site.net.mgmt.hosts4.${hostName}}"
''