{ config, lib, pkgs, ... }:

with lib;

let
  domaine = "nyanlout.re";

  sendMail = to: subject: message: pkgs.writeShellScriptBin "mail.sh" ''
    ${pkgs.system-sendmail}/bin/sendmail ${to} <<EOF
    From: root@nyanlout.re
    Subject: ${subject}
    ${message}
    EOF
  '';

  login_mail_alert = pkgs.writeShellScriptBin "mail_alert.sh" ''
    if [ "$PAM_TYPE" != "close_session" ]; then
      ${sendMail "paul@nyanlout.re" "SSH Login: $PAM_USER from $PAM_RHOST" "`env`"}/bin/mail.sh
    fi
  '';

  backup_mail_alert = sendMail "paul@nyanlout.re" "ERREUR: Sauvegarde Borg" "Impossible de terminer la sauvegarde. Merci de voir les logs";
in

{
  imports = [
    ../../services/haproxy-acme.nix
    ../../services/mail-server.nix
    ../../services/site-max.nix
    ../../services/auto-pr.nix
    ../../services/python-ci.nix
    ../../services/sdtdserver.nix
    ../../containers/vsftpd.nix
    # /mnt/secrets/factorio_secrets.nix
    ./monitoring.nix
    ./medias.nix
    ./web.nix
  ];

  nixpkgs.overlays = [
    (import ../../overlays/dogetipbot-telegram.nix)
  ];

  services = {

    fail2ban.enable = true;

    fstrim.enable = true;

    mailserver = {
      enable = true;
      domaine = domaine;
    };

    syncthing = {
      enable = true;
      dataDir = "/var/lib/syncthing";
      openDefaultPorts = true;
    };

    nfs.server = {
      enable = true;
      exports = ''
        /mnt/medias  10.30.0.0/16(ro,no_root_squash)
        /exports/steam  10.30.0.0/16(rw,async,no_root_squash)
        /var/lib/minecraft  10.30.0.0/16(rw,no_root_squash)
      '';
      statdPort = 4000;
      lockdPort = 4001;
      mountdPort = 4002;
    };

    matrix-synapse = {
      enable = true;
      enable_registration = true;
      server_name = "nyanlout.re";
      listeners = [
        { # federation
          bind_address = "";
          port = 8448;
          resources = [
            { compress = true; names = [ "client" "webclient" ]; }
            { compress = false; names = [ "federation" ]; }
          ];
          tls = true;
          type = "http";
          x_forwarded = false;
        }
        { # client
          bind_address = "127.0.0.1";
          port = 8008;
          resources = [
            { compress = true; names = [ "client" "webclient" ]; }
          ];
          tls = false;
          type = "http";
          x_forwarded = true;
        }
      ];
      max_upload_size = "100M";
      database_type = "psycopg2";
      database_args = {
        database = "matrix-synapse";
      };
      tls_private_key_path = "/var/lib/acme/${domaine}/key.pem";
      tls_certificate_path = "/var/lib/acme/${domaine}/fullchain.pem";
      url_preview_enabled = true;
      logConfig = ''
        version: 1

        formatters:
            journal_fmt:
                format: '%(name)s: [%(request)s] %(message)s'

        filters:
            context:
                (): synapse.util.logcontext.LoggingContextFilter
                request: ""

        handlers:
            journal:
                class: systemd.journal.JournalHandler
                formatter: journal_fmt
                filters: [context]
                SYSLOG_IDENTIFIER: synapse

        root:
            level: WARNING
            handlers: [journal]

        disable_existing_loggers: False
      '';
      app_service_config_files = [
        "/var/lib/matrix-synapse/mautrix-telegram-registration.yaml"
      ];
    };

    mautrix-telegram = {
      enable = true;
      settings = {
        homeserver = {
          address = "https://matrix.nyanlout.re";
          domain = "nyanlout.re";
        };
        appservice = {
          bot_username = "loutrebot";
        };
        bridge = {
          relaybot.authless_portals = false;
          permissions = {
            "@nyanloutre:nyanlout.re" = "admin";
          };
        };
      };
      environmentFile = "/mnt/secrets/mautrix-telegram.env";
      serviceDependencies = [ "matrix-synapse.service" ];
    };

    borgbackup.jobs = {
      loutre = {
        paths = [
          "/var/certs"
          "/var/dkim"
          "/var/lib/jellyfin"
          "/var/lib/gitea"
          "/var/lib/grafana"
          "/var/lib/jackett"
          "/var/lib/matrix-synapse"
          "/var/lib/postgresql/.zfs/snapshot/borgsnap"
          "/var/lib/radarr"
          "/var/lib/sonarr"
          "/var/lib/syncthing"
          "/var/lib/transmission"
          "/mnt/medias/musique"
          "/mnt/medias/torrent/lidarr"
          "/mnt/medias/torrent/musique"
          "/var/sieve"
          "/var/vmail"
        ];
        repo = "/mnt/backup/borg";
        encryption = {
          mode = "repokey-blake2";
          passCommand = "cat /mnt/secrets/borgbackup_loutre_encryption_pass";
        };
        startAt = "weekly";
        prune.keep = {
          within = "1d";
          weekly = 4;
          monthly = 12;
        };
        preHook = "${pkgs.zfs}/bin/zfs snapshot loutrepool/var/postgresql@borgsnap";
        postHook = ''
          ${pkgs.zfs}/bin/zfs destroy loutrepool/var/postgresql@borgsnap
          if [[ $exitStatus == 0 ]]; then
            ${pkgs.rclone}/bin/rclone --config /mnt/secrets/rclone_loutre.conf sync -v $BORG_REPO BackupStorage:loutre
          else
            ${backup_mail_alert}/bin/mail.sh
          fi
        '';
      };
    };

    borgbackup.repos = {
      diskstation = {
        authorizedKeys = [ "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDllbxON66dBju7sMnhX8/E0VRo3+PDYvDsHP0/FK+h8JHol4+pouLmI7KIDKYOJmSuom283OqnyZOMqk+RShTwWIFm9hOd2R9aj45Zrd9jPW2APOCec/Epgogj0bwBnc0l2v6qxkxaBMgL5DnAQ+E00uvL1UQpK8c8j4GGiPlkWJD6Kf+pxmnfH1TIm+J2XCwl0oeCkSK/Frd8eM+wCraMSzoaGiEcfMz2jK8hxDWjDxX7epU0ELF22BVCuyN8cYRoFTnV88E38PlaqsOqD5ePkxk425gDh7j/C06f8QKgnasVH2diixo92kYSd7i/RmfeXDDwAD5xqUvODczEuIdt root@DiskStation" ];
        path = "/mnt/backup_loutre/diskstation_borg";
        user = "synology";
      };
    };

    auto-pr.enable = true;

    sdtdserver.enable = false;

    factorio = {
      enable = false;
      autosave-interval = 10;
      game-name = "Shame";
      public = true;
      username = "nyanloutre";
    };

    minecraft-server = {
      enable = false;
      jvmOpts = "-Xms512m -Xmx3072m";
      eula = true;
      declarative = true;
      openFirewall = true;
      whitelist = {
        nyanloutre = "db0669ea-e332-4ca3-8d50-f5d1458f5822";
        Hautension = "f05677f4-be5a-47df-ad77-21c739180aa2";
        LordDarkKiwi = "79290cfc-0b00-484f-9c94-ab0786402de6";
        Madahin = "f5f747e3-fac2-43e8-9b9b-a67dc2f368ff";
        Hopegcx = "4497f759-2210-48db-8764-307d33011442";
        wyrd68 = "127a3021-cdc1-419f-9010-4651df9ae3af";
        sparsyateloutre = "d2ff63c1-4e9f-4b21-9bfc-decce5d987b3";
      };
      serverProperties = {
        difficulty = 2;
        gamemode = 0;
        max-players = 50;
        motd = "Hi Mark !";
        white-list = true;
      };
    };
  };

  systemd.services.dogetipbot-telegram = {
    after = [ "network.target" ];
    wantedBy = [ "multi-user.target" ];
    script = "${pkgs.dogetipbot-telegram}/bin/dogetipbot-telegram --block-io-api-key $BLOCK_IO_API_KEY --block-io-pin $BLOCK_IO_PIN --telegram-api-key $TELEGRAM_API_KEY --network DOGE";
    enable = true;
    serviceConfig = {
      EnvironmentFile = "/mnt/secrets/dogetipbot-telegram_env";
      DynamicUser = true;
    };
  };

  systemd.services.matrix-synapse = {
    serviceConfig = {
      MemoryHigh = "3G";
      MemoryMax = "5G";
    };
  };

  users.groups.acme.members = [ "matrix-synapse" ];

  security.pam.services.sshd.text = pkgs.lib.mkDefault( pkgs.lib.mkAfter "session optional ${pkgs.pam}/lib/security/pam_exec.so seteuid ${login_mail_alert}/bin/mail_alert.sh" );

  networking = {
    wireguard.interfaces = {
      wg0 = {
        ips = [ "192.168.20.1/24" ];
        privateKeyFile = "/mnt/secrets/wireguard/wg0.privatekey";
        listenPort = 51820;
        allowedIPsAsRoutes = true;
        peers = [
          {
            allowedIPs = [ "192.168.20.2/32" ];
            publicKey = "b/SXiqo+GPdNOc54lyEVeUBc6B5AbVMKh+g5EZPGzlE=";
          }
        ];
      };
    };

    nat.internalInterfaces = [ "wg0" ];
    nat.internalIPs = [ "192.168.20.0/24" ];

    firewall.allowedTCPPorts = [
      8448 # Matrix federation
      20 21 # FTP
    ];

    firewall.allowedTCPPortRanges = [
      { from = 64000; to = 65535; } # FTP
    ];

    firewall.allowedUDPPorts = [
      config.networking.wireguard.interfaces.wg0.listenPort
    ];
  };
}