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with import ../libs.nix;
with nixpkgs_unstable;
let
  connexionswing = { environment ? "dev" }: rec {
    varDir = "/var/lib/connexionswing_${environment}";
    envName= lib.strings.toUpper environment;
    configRoot =
      # FIXME: spool emails in prod for when immae.eu is down?
      assert checkEnv "NIXOPS_CONNEXIONSWING_${envName}_MYSQL_PASSWORD";
      assert checkEnv "NIXOPS_CONNEXIONSWING_${envName}_MYSQL_USER";
      assert checkEnv "NIXOPS_CONNEXIONSWING_${envName}_MYSQL_NAME";
      assert checkEnv "NIXOPS_CONNEXIONSWING_${envName}_SECRET";
      assert checkEnv "NIXOPS_CONNEXIONSWING_${envName}_EMAIL";
      pkgs.writeText "parameters.yml" ''
        # This file is auto-generated during the composer install
        parameters:
            database_host: db-1.immae.eu
            database_port: null
            database_name: ${builtins.getEnv "NIXOPS_CONNEXIONSWING_${envName}_MYSQL_NAME"}
            database_user: ${builtins.getEnv "NIXOPS_CONNEXIONSWING_${envName}_MYSQL_USER"}
            database_password: ${builtins.getEnv "NIXOPS_CONNEXIONSWING_${envName}_MYSQL_PASSWORD"}
            mailer_transport: smtp
            mailer_host: mail.immae.eu
            mailer_user: null
            mailer_password: null
            subscription_email: ${builtins.getEnv "NIXOPS_CONNEXIONSWING_${envName}_EMAIL"}
            allow_robots: true
            secret: ${builtins.getEnv "NIXOPS_CONNEXIONSWING_${envName}_SECRET"}
      '';
    phpFpm = rec {
      socket = "/var/run/phpfpm/connexionswing-${environment}.sock";
      pool = ''
        listen = ${socket}
        user = ${apache.user}
        group = ${apache.group}
        listen.owner = ${apache.user}
        listen.group = ${apache.group}
        php_admin_value[upload_max_filesize] = 20M
        php_admin_value[post_max_size] = 20M
        ;php_admin_flag[log_errors] = on
        php_admin_value[open_basedir] = "${configRoot}:${webappDir}:${varDir}:/tmp"
        ${if environment == "dev" then ''
        pm = ondemand
        pm.max_children = 5
        pm.process_idle_timeout = 60
        env[SYMFONY_DEBUG_MODE] = "yes"
        '' else ''
        pm = dynamic
        pm.max_children = 20
        pm.start_servers = 2
        pm.min_spare_servers = 1
        pm.max_spare_servers = 3
        ''}'';
    };
    apache = {
      user = "wwwrun";
      group = "wwwrun";
      modules = [ "proxy_fcgi" ];
      vhostConf = ''
      <FilesMatch "\.php$">
        SetHandler "proxy:unix:${phpFpm.socket}|fcgi://localhost"
      </FilesMatch>

      <Directory ${varDir}/medias>
        Options FollowSymLinks
        AllowOverride None
        Require all granted
      </Directory>

      <Directory ${varDir}/uploads>
        Options FollowSymLinks
        AllowOverride None
        Require all granted
      </Directory>

      ${if environment == "dev" then ''
      <Location />
        Use LDAPConnect
        Require ldap-group   cn=connexionswing.immae.eu,cn=httpd,ou=services,dc=immae,dc=eu
        ErrorDocument 401 "<html><meta http-equiv=\"refresh\" content=\"0;url=https://connexionswing.com\"></html>"
      </Location>

      <Directory ${webRoot}>
        Options Indexes FollowSymLinks MultiViews Includes
        AllowOverride None
        Require all granted

        DirectoryIndex app_dev.php

        <IfModule mod_negotiation.c>
        Options -MultiViews
        </IfModule>

        <IfModule mod_rewrite.c>
          RewriteEngine On

          RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
          RewriteRule ^(.*) - [E=BASE:%1]

          # Maintenance script
          RewriteCond %{DOCUMENT_ROOT}/maintenance.php -f
          RewriteCond %{SCRIPT_FILENAME} !maintenance.php
          RewriteRule ^.*$ %{ENV:BASE}/maintenance.php [R=503,L]
          ErrorDocument 503 /maintenance.php

          # Sets the HTTP_AUTHORIZATION header removed by Apache
          RewriteCond %{HTTP:Authorization} .
          RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

          RewriteCond %{ENV:REDIRECT_STATUS} ^$
          RewriteRule ^app_dev\.php(?:/(.*)|$) %{ENV:BASE}/$1 [R=301,L]

          # If the requested filename exists, simply serve it.
          # We only want to let Apache serve files and not directories.
          RewriteCond %{REQUEST_FILENAME} -f
          RewriteRule ^ - [L]

          # Rewrite all other queries to the front controller.
          RewriteRule ^ %{ENV:BASE}/app_dev.php [L]
        </IfModule>

      </Directory>
      '' else ""}
      '';
    };
    activationScript = {
      deps = [ "wrappers" ];
      text = ''
      install -m 0755 -o ${apache.user} -g ${apache.group} -d ${varDir} \
        ${varDir}/medias \
        ${varDir}/uploads \
        ${varDir}/var
      if [ ! -f "${varDir}/currentWebappDir" -o \
          "${webappDir}" != "$(cat ${varDir}/currentWebappDir 2>/dev/null)" ]; then
        pushd ${webappDir} > /dev/null
        $wrapperDir/sudo -u wwwrun ./bin/console --env=${environment} cache:clear --no-warmup
        popd > /dev/null
        echo -n "${webappDir}" > ${varDir}/currentWebappDir
      fi
      '';
    };
    webappDir = pkgs.stdenv.mkDerivation (fetchedGitPrivate ./connexionswing_master.json // rec {
      # FIXME: can we do better than symlink?
      # FIXME: imagick optional
      # FIXME: initial sync
      # FIXME: backup
      buildPhase = ''
        export GIT_SSL_CAINFO=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt
        export SSL_CERT_FILE=${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt

        ln -sf ../../../../../${varDir}/{medias,uploads} web/images/
        ln -sf ${configRoot} app/config/parameters.yml
        ${if environment == "dev" then "php bin/composer install" else ''
        SYMFONY_ENV=prod php bin/composer install --no-dev
        ./bin/console assetic:dump --env=prod --no-debug
        ''}
        rm -rf var
        ln -sf ../../../../../${varDir}/var var
        '';
      installPhase = ''
        cp -a . $out
        '';
      buildInputs = [
        pkgs.php pkgs.git pkgs.cacert
      ];
    });
    webRoot = "${webappDir}/web";
  };

  adminer = rec {
    webRoot = pkgs.stdenv.mkDerivation rec {
      version = "4.7.0";
      name = "adminer-${version}";
      src = pkgs.fetchurl {
        url = "https://www.adminer.org/static/download/${version}/${name}.php";
        sha256 = "1qq2g7rbfh2vrqfm3g0bz0qs057b049n0mhabnsbd1sgnpvnc5z7";
      };
      phases = "installPhase";
      installPhase = ''
        mkdir -p $out
        cp $src $out/index.php
      '';
    };
    phpFpm = rec {
      socket = "/var/run/phpfpm/adminer.sock";
      pool = ''
        listen = ${socket}
        user = ${apache.user}
        group = ${apache.group}
        listen.owner = ${apache.user}
        listen.group = ${apache.group}
        pm = ondemand
        pm.max_children = 5
        pm.process_idle_timeout = 60
        ;php_admin_flag[log_errors] = on
        php_admin_value[open_basedir] = "${webRoot}:/tmp"
        '';
    };
    apache = {
      user = "wwwrun";
      group = "wwwrun";
      modules = [ "proxy_fcgi" ];
      vhostConf = ''
        Alias /adminer ${webRoot}
        <Directory ${webRoot}>
          DirectoryIndex = index.php
          <FilesMatch "\.php$">
            SetHandler "proxy:unix:${phpFpm.socket}|fcgi://localhost"
          </FilesMatch>
        </Directory>
        '';
    };
    nginxConf = {
      alias = webRoot;
      index = "index.php";
      extraConfig = ''
        include ${pkgs.nginx}/conf/fastcgi.conf;
        fastcgi_split_path_info ^(.+?\.php)(/.*)$;
        fastcgi_param HTTP_PROXY "";
        fastcgi_param SCRIPT_FILENAME ${webRoot}/index.php;
        fastcgi_pass unix:${phpFpm.socket};
        fastcgi_index index.php;
        fastcgi_intercept_errors on;
        '';
    };
  };

  ympd = rec {
    config = {
      webPort = "localhost:18001";
      mpd = {
        host = "malige.home.immae.eu";
        port = 6600;
      };
    };
    apache = {
      modules = [
        "proxy_wstunnel"
        ];
      vhostConf = ''
        <LocationMatch "^/mpd">
          Use LDAPConnect
          Require ldap-group   cn=users,cn=mpd,ou=services,dc=immae,dc=eu
          Require local
        </LocationMatch>

        RedirectMatch permanent "^/mpd$" "/mpd/"
        <Location "/mpd/">
          ProxyPass http://${config.webPort}/
          ProxyPassReverse http://${config.webPort}/
          ProxyPreserveHost on
        </Location>
        <Location "/mpd/ws">
          ProxyPass ws://${config.webPort}/ws
        </Location>
      '';
    };
  };
in
  {
    inherit adminer;
    inherit ympd;
    connexionswing_dev  = connexionswing { environment = "dev"; };
    connexionswing_prod = connexionswing { environment = "prod"; };
  }