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path: root/nixos/cobalt/services/dendrite.nix
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{ config, ... }:

let
  database = {
    connection_string = "postgres:///dendrite?host=/run/postgresql";
    max_open_conns = 97;
    max_idle_conns = 5;
    conn_max_lifetime = -1;
  };
in
{
  # Adapted from Mic92/dotfiles, (C) 2021 Jörg Thalheim (MIT)
  sops.secrets.matrix-server-key = { };

  services.dendrite = {
    enable = true;
    settings = {
      global = {
        server_name = "sefidel.com";
        # `private_key` has the type `path`
        # prefix a `/` to make `path` happy
        private_key = "/$CREDENTIALS_DIRECTORY/matrix-server-key";
        trusted_third_party_id_servers = [
          "matrix.org"
          "vector.im"
        ];
        metrics.enable = true;
      };
      logging = [
        {
          type = "std";
          level = "warn";
        }
      ];
      app_service_api = {
        inherit database;
        config_files = [ ];
      };
      client_api = {
        registration_disabled = true;
        rate_limiting.enabled = false;
        # registration_shared_secret = ""; # Initially set this option to configure the admin user.
      };
      media_api = {
        inherit database;
        dynamic_thumbnails = true;
      };
      room_server = {
        inherit database;
      };
      push_server = {
        inherit database;
      };
      mscs = {
        inherit database;
        mscs = [ "msc2836" "msc2946" ];
      };
      sync_api = {
        inherit database;
        real_ip_header = "X-Real-IP";
      };
      key_server = {
        inherit database;
      };
      federation_api = {
        inherit database;
        key_perspectives = [
          {
            server_name = "matrix.org";
            keys = [
              {
                key_id = "ed25519:auto";
                public_key = "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw";
              }
              {
                key_id = "ed25519:a_RXGa";
                public_key = "l8Hft5qXKn1vfHrg3p4+W8gELQVo8N13JkluMfmn2sQ";
              }
            ];
          }
        ];
        prefer_direct_fetch = false;
      };
      user_api = {
        account_database = database;
        device_database = database;
      };
    };
    loadCredential = [ "matrix-server-key:${config.sops.secrets.matrix-server-key.path}" ];
  };

  environment.persistence."/persist".directories = [
    "/var/lib/private/dendrite"
  ];

  services.postgresql.enable = true;
  services.postgresql.ensureDatabases = [ "dendrite" ];
  services.postgresql.ensureUsers = [
    {
      name = "dendrite";
      ensurePermissions."DATABASE dendrite" = "ALL PRIVILEGES";
    }
  ];


  services.nginx.virtualHosts."matrix.sefidel.com" = {
    forceSSL = true;
    useACMEHost = "sefidel.com";
    listen = [
      { addr = "0.0.0.0"; port = 443; ssl = true; }
      { addr = "[::]"; port = 443; ssl = true; }
      { addr = "0.0.0.0"; port = 8448; ssl = true; }
      { addr = "[::]"; port = 8448; ssl = true; }

    ];
    extraConfig = ''
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_read_timeout 600;
      client_max_body_size 50M;
    '';
    locations."/_matrix".proxyPass = "http://[::1]:${toString config.services.dendrite.httpPort}";
    locations."/_dendrite".proxyPass = "http://[::1]:${toString config.services.dendrite.httpPort}";
    locations."/_synapse".proxyPass = "http://[::1]:${toString config.services.dendrite.httpPort}";
    # TODO: web client
  };

  services.nginx.virtualHosts."sefidel.com" =
    let
      server-hello = { "m.server" = "matrix.sefidel.com:443"; };
      client-hello = {
        "m.homeserver"."base_url" = "https://matrix.sefidel.com";
        "m.identity_server"."base_url" = "https://vector.im";
      };
    in
    {
      addSSL = true;
      useACMEHost = "sefidel.com";
      locations = {
        "/.well-known/matrix/server" = {
          extraConfig = ''
            add_header Content-Type application/json;
            return 200 '${builtins.toJSON server-hello}';
          '';
        };
        "/.well-known/matrix/client" = {
          extraConfig = ''
            add_header Content-Type application/json;
            add_header Access-Control-Allow-Origin *;
            return 200 '${builtins.toJSON client-hello}';
          '';
        };
      };
    };

  networking.firewall.allowedTCPPorts = [ 8448 ];
}