##############################################################################################
# Includes:                                                                                  #
#   - Nginx + SSL config                                                                     #
#   - Gitea                                                                                  #
#   - Nextcloud                                                                              #
#     - Heavily based on: https://gist.github.com/schneefux/22b75d2bd3e4e754ba1684f1d1e93271 #
#   - Mail ssl root                                                                          #
##############################################################################################

{ conf, lib, pkgs, ... }:

let
  gitpkgs = import /nixpkgs/default.nix {};
in {
  services.nginx = {
    enable = true;
    recommendedGzipSettings = true;
    recommendedOptimisation = true;
    recommendedProxySettings = true;
    sslCiphers = "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256";
    virtualHosts = {
      "ophanim.de" = {
        enableACME = true;
        forceSSL = true;
        root = "/var/www";
      };
      "builder.ophanim.de" = {
        enableACME = true;
        forceSSL = true;
        extraConfig = ''
          location / {
            proxy_pass http://127.0.0.1:3001;
            proxy_set_header Host $http_host;
            proxy_set_header REMOTE_ADDR $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto https;
          }
        '';
      };
      "mail.ophanim.de" = {
        enableACME = true;
        forceSSL = true;
        root = "/var/www";
      };
      "storage.ophanim.de" = {
        enableACME = true;
        forceSSL = true;
        root = "${gitpkgs.nextcloud}";
        locations = {
        "/robots.txt" = {
          extraConfig = ''
            allow all;
            log_not_found off;
            access_log off;
          '';
        };

        "~ ^/(?:\.htaccess|config|db_structure\.xml|README)" = {
          extraConfig = "deny all;";
        };

       "/" = {
          extraConfig = ''
            rewrite ^/.well-known/host-meta /public.php?service=host-meta last;
            rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last;
            rewrite ^/.well-known/carddav /remote.php/carddav/ redirect;
            rewrite ^/.well-known/caldav /remote.php/caldav/ redirect;
            rewrite ^(/core/doc/[^\/]+/)$ $1/index.html;
            try_files $uri $uri/ =404;
          '';
        };

        "~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+|core/templates/40[34])\.php(?:$|/)" = {
          extraConfig = ''
            include ${pkgs.nginx}/conf/uwsgi_params;
            uwsgi_modifier1 14;
            uwsgi_hide_header X-Frame-Options;
            uwsgi_hide_header X-XSS-Protection;
            uwsgi_hide_header X-Content-Type-Options;
            uwsgi_hide_header X-Robots-Tag;
            uwsgi_param MOD_X_ACCEL_REDIRECT_ENABLED on;
            uwsgi_pass unix:/run/uwsgi/php.sock;
          '';
        };

        "~* \.(?:css|js)$" = {
          extraConfig = ''
            add_header Cache-Control "public, max-age=7200";
            add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;";
            add_header X-Content-Type-Options nosniff;
            add_header X-Frame-Options "SAMEORIGIN";
            add_header X-XSS-Protection "1; mode=block";
            add_header X-Robots-Tag none;
            add_header X-Download-Options noopen;
            add_header X-Permitted-Cross-Domain-Policies none;
            access_log off;
          '';
        };

        "~* \.(?:jpg|jpeg|gif|bmp|ico|png|swf)$" = {
          extraConfig = ''
            access_log off;
          '';
        };

        "^~ /data" = {
          extraConfig = ''
            internal;
          '';
        };

        "^~ /apps" = {
          extraConfig = ''
            alias /var/lib/nextcloud/apps;
          '';
        };
      };

### Settings for new nextcloud module.... does not work yet???
#        locations = {
#          "= /robots.txt" = {
#            priority = 100;
#            extraConfig = ''
#              allow all;
#              log_not_found off;
#              access_log off;
#            '';
#          };
#          "/" = {
#            priority = 200;
#            extraConfig = "rewrite ^ /index.php$uri;";
#          };
#          "~ ^/store-apps" = {
#            priority = 201;
#            extraConfig = "root /var/lib/nextcloud;";
#          };
#          "= /.well-known/carddav" = {
#            priority = 210;
#            extraConfig = "return 301 $scheme://$host/remote.php/dav;";
#          };
#          "= /.well-known/caldav" = {
#            priority = 210;
#            extraConfig = "return 301 $scheme://$host/remote.php/dav;";
#          };
#          "~ ^/(?:build|tests|config|lib|3rdparty|templates|data)/" = {
#            priority = 300;
#            extraConfig = "deny all;";
#          };
#          "~ ^/(?:\\.|autotest|occ|issue|indie|db_|console)" = {
#            priority = 300;
#            extraConfig = "deny all;";
#          };
#          "~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+)\\.php(?:$|/)" = {
#            priority = 500;
#            extraConfig = ''
#              include ${pkgs.nginxMainline}/conf/fastcgi.conf;
#              fastcgi_split_path_info ^(.+\.php)(/.*)$;
#              fastcgi_param PATH_INFO $fastcgi_path_info;
#              fastcgi_param HTTPS on;
#              fastcgi_param modHeadersAvailable true;
#              fastcgi_param front_controller_active true;
#              fastcgi_pass unix:/run/phpfpm/nextcloud;
#              fastcgi_intercept_errors on;
#              fastcgi_request_buffering off;
#              fastcgi_read_timeout 120s;
#            '';
#          };
#          "~ ^/(?:updater|ocs-provider)(?:$|/)".extraConfig = ''
#            try_files $uri/ =404;
#            index index.php;
#          '';
#          "~ \\.(?:css|js|woff|svg|gif)$".extraConfig = ''
#            try_files $uri /index.php$uri$is_args$args;
#            add_header Cache-Control "public, max-age=15778463";
#            add_header X-Content-Type-Options nosniff;
#            add_header X-XSS-Protection "1; mode=block";
#            add_header X-Robots-Tag none;
#            add_header X-Download-Options noopen;
#            add_header X-Permitted-Cross-Domain-Policies none;
#            access_log off;
#          '';
#          "~ \\.(?:png|html|ttf|ico|jpg|jpeg)$".extraConfig = ''
#            try_files $uri /index.php$uri$is_args$args;
#            access_log off;
#          '';
#        };
#        extraConfig = ''
#          add_header X-Content-Type-Options nosniff;
#          add_header X-XSS-Protection "1; mode=block";
#          add_header X-Robots-Tag none;
#          add_header X-Download-Options noopen;
#          add_header X-Permitted-Cross-Domain-Policies none;
#          error_page 403 /core/templates/403.php;
#          error_page 404 /core/templates/404.php;
#          client_max_body_size 1024M; 
#          fastcgi_buffers 64 4K;
#          gzip on;
#          gzip_vary on;
#          gzip_comp_level 4;
#          gzip_min_length 256;
#          gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
#          gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;
#        '';
      };
      "git.ophanim.de" = {
        enableACME = true;
        forceSSL = true;
        root = "/var/lib/gitea/public";
        extraConfig = ''
          location / {
            try_files maintain.html $uri $uri/index.html @node;
          }

          location @node {
            client_max_body_size 0;
            proxy_pass http://localhost:3000;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $http_host;
            proxy_set_header X-Forwarded-Ssl on;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_max_temp_file_size 0;
            proxy_redirect off;
            proxy_read_timeout 120;
          }
        '';
      };
    };
  };

  # Nextcloud system cron
  users.users.nginx.useDefaultShell = true;
  systemd.services.nextcloudcron = {
    description = "Nextcloud cron";
    after = [ "network.target" ];
    script = ''
      ${pkgs.php}/bin/php ${gitpkgs.nextcloud}/cron.php
      ${gitpkgs.nextcloud-news-updater}/bin/nextcloud-news-updater -t 2 -i 30 --mode singlerun ${gitpkgs.nextcloud}
    '';
    environment = { NEXTCLOUD_CONFIG_DIR = "/var/lib/nextcloud/config"; };
    serviceConfig.User = "nginx";
  };
  systemd.timers.nextcloudcron = {
    enable = true;
    description = "Nextcloud cron timer";
    wantedBy = [ "timers.target" ];
    partOf = [ "Nextcloudcron.service" ];
    timerConfig = {
      RandomizedDelaySec = "5min";
      OnCalendar = "*-*-* *:00,30:00";  # every 1/2h
      Persistent = true;
    };
  };

  services.uwsgi = {
    enable = true;
    user = "nginx";
    group = "nginx";
    instance = {
        type = "emperor";
        vassals = {
          php = {
            type = "normal";
            socket = "/run/uwsgi/php.sock";
            master = true;
            vacuum = true;

            processes = 16;
            cheaper = 1;
            php-sapi-name = "apache"; # opcode caching tweak

            php-allowed-ext = [ ".php" ".inc" ];
            socket-modifier1 = 14;
            php-index = "index.php";

            php-set = "date.timezone=Europe/Berlin";
            env = [
              "NEXTCLOUD_CONFIG_DIR=/var/lib/nextcloud/config"
            ];
            plugins = [ "php" ];
          };
        };
    };
    plugins = [ "php" ];
  };
}