{ config, pkgs, ... }:

let
  host = "s3.dgnum.eu";
  webHost = "cdn.dgnum.eu";

  data_dir = "/data/slow/garage/data";
  metadata_dir = "/data/fast/garage/meta";

  domains = [
    "boussole-sante.normalesup.eu"
    "simi.normalesup.eu"
  ];

  buckets = [
    "castopod-dgnum"
    "peertube-videos-dgnum"
  ] ++ domains;

  mkHosted = host: builtins.map (b: "${b}.${host}");
in
{
  services.garage = {
    enable = true;

    package = pkgs.garage_0_9;

    settings = {
      inherit data_dir metadata_dir;

      db_engine = "lmdb";

      replication_mode = "none";
      compression_level = 7;

      rpc_bind_addr = "[::]:3901";
      rpc_public_addr = "127.0.0.1:3901";

      s3_api = {
        s3_region = "garage";
        api_bind_addr = "127.0.0.1:3900";
        root_domain = ".${host}";
      };

      s3_web = {
        bind_addr = "127.0.0.1:3902";
        root_domain = ".${webHost}";
        index = "index.html";
      };

      k2v_api.api_bind_addr = "[::]:3904";

      admin.api_bind_addr = "0.0.0.0:3903";
    };

    environmentFile = config.age.secrets."garage-environment_file".path;
  };

  systemd.services.garage.serviceConfig = {
    User = "garage";
    ReadWriteDirectories = [
      data_dir
      metadata_dir
    ];
  };

  users.users.garage = {
    isSystemUser = true;
    group = "garage";
  };
  users.groups.garage = { };

  services.nginx.virtualHosts = {
    ${host} = {
      enableACME = true;
      forceSSL = true;

      serverAliases = mkHosted host buckets;

      locations."/".extraConfig = ''
        proxy_pass http://127.0.0.1:3900;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        # Disable buffering to a temporary file.
        proxy_max_temp_file_size 0;
        client_max_body_size 5G;
      '';
    };

    ${webHost} = {
      enableACME = true;
      forceSSL = true;

      serverAliases = domains ++ (mkHosted webHost buckets);

      locations."/".extraConfig = ''
        proxy_pass http://127.0.0.1:3902;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
      '';
    };
  };
}