{ lib, pkgs, config, mylibs, myconfig, ... }:
let
  cfg = config.services.myWebsites;
  makeService = name: cfg: let
    toVhost = vhostConf: {
      enableSSL = true;
      sslServerCert = "/var/lib/acme/${vhostConf.certName}/cert.pem";
      sslServerKey = "/var/lib/acme/${vhostConf.certName}/key.pem";
      sslServerChain = "/var/lib/acme/${vhostConf.certName}/fullchain.pem";
      logFormat = "combinedVhost";
      listen = [
        { ip = cfg.ip;  port = 443; }
      ];
      hostName = builtins.head vhostConf.hosts;
      serverAliases = builtins.tail vhostConf.hosts or [];
      documentRoot = vhostConf.root;
      extraConfig = builtins.concatStringsSep "\n" vhostConf.extraConfig;
    };
    redirectVhost = { # Should go last, catchall http -> https redirect
      listen = [ { ip = cfg.ip; port = 80; } ];
      hostName = "redirectSSL";
      serverAliases = [ "*" ];
      enableSSL = false;
      logFormat = "combinedVhost";
      documentRoot = "/var/lib/acme/acme-challenge";
      extraConfig = ''
        RewriteEngine on
        RewriteCond "%{REQUEST_URI}"   "!^/\.well-known"
        RewriteRule ^(.+)              https://%{HTTP_HOST}$1  [R=301]
        # To redirect in specific "VirtualHost *:80", do
        #   RedirectMatch 301 ^/((?!\.well-known.*$).*)$ https://host/$1
        # rather than rewrite
      '';
    };
    fallbackVhost = toVhost { # Should go first, default choice
      certName    = "eldiron";
      hosts       = ["eldiron.immae.eu" ];
      root        = ../../www;
      extraConfig = [ "DirectoryIndex index.htm" ];
    };
  in rec {
    enable = true;
    listen = [
      { ip = cfg.ip;  port = 443; }
    ];
    stateDir = "/run/httpd_${name}";
    logPerVirtualHost = true;
    multiProcessingModule = "worker";
    adminAddr = "httpd@immae.eu";
    logFormat = "combinedVhost";
    extraModules = pkgs.lib.lists.unique (pkgs.lib.lists.flatten cfg.modules);
    extraConfig = builtins.concatStringsSep "\n" cfg.extraConfig;
    virtualHosts = [ fallbackVhost ]
      ++ (pkgs.lib.attrsets.mapAttrsToList (n: v: toVhost v) cfg.vhostConfs)
      ++ [ redirectVhost ];
  };
  makeServiceOptions = name: ip: {
    enable = lib.mkEnableOption "enable websites in ${name}";
    ip = lib.mkOption {
      type = lib.types.string;
      default = ip;
      description = "${name} ip to listen to";
    };
    modules = lib.mkOption {
      type = lib.types.listOf (lib.types.str);
      default = [];
    };
    extraConfig = lib.mkOption {
      type = lib.types.listOf (lib.types.lines);
      default = [];
    };
    vhostConfs = lib.mkOption {
      type = lib.types.attrsOf (lib.types.submodule {
        options = {
          certName = lib.mkOption { type = lib.types.string; };
          hosts    = lib.mkOption { type = lib.types.listOf lib.types.string; };
          root     = lib.mkOption { type = lib.types.nullOr lib.types.path; };
          extraConfig = lib.mkOption { type = lib.types.listOf lib.types.lines; default = []; };
        };
      });
    };
  };
  makeModules = cfg: pkgs.lib.lists.flatten (pkgs.lib.attrsets.mapAttrsToList (n: v: v.modules or []) cfg.apacheConfig);
  makeExtraConfig = cfg: (builtins.filter (x: x != null) (pkgs.lib.attrsets.mapAttrsToList (n: v: v.extraConfig or null) cfg.apacheConfig));
in
{
  imports = [
    ./chloe
    ./ludivine
    ./aten
    ./piedsjaloux
    ./connexionswing
    ./tellesflorian
    ./emilia
    ./capitaines
    ./ftp/jerome.nix
    ./ftp/nassime.nix
    ./ftp/florian.nix
    ./ftp/denisejerome.nix
    ./ftp/immae.nix
    ./tools/db
    ./tools/tools
    ./tools/dav
    ./tools/cloud
    ./tools/git
    ./tools/mastodon
    ./tools/mediagoblin
    ./tools/diaspora
    ./tools/ether
    # built using:
    # sed -e "s/services\.httpd/services\.httpdProd/g" .nix-defexpr/channels/nixpkgs/nixos/modules/services/web-servers/apache-httpd/default.nix
    # Removed allGranted
    # And removed users / groups
    ./apache/httpd_prod.nix
    ./apache/httpd_inte.nix
    # except for this one for users/groups
    ./apache/httpd_tools.nix
    # Adapted from base phpfpm
    ./phpfpm
  ];

  options.services.myWebsites = {
    production = makeServiceOptions "production" myconfig.ips.production;
    integration = makeServiceOptions "integration" myconfig.ips.integration;
    tools = makeServiceOptions "tools" myconfig.ips.main;

    apacheConfig = lib.mkOption {
      type = lib.types.attrsOf (lib.types.submodule {
        options = {
          modules = lib.mkOption {
            type = lib.types.listOf (lib.types.str);
            default = [];
          };
          extraConfig = lib.mkOption {
            type = lib.types.nullOr lib.types.lines;
            default = null;
          };
        };
      });
      default = {};
      description = "Extra global config";
    };

  };

  config = {
    networking = {
      firewall = {
        enable = true;
        allowedTCPPorts = [ 80 443 ];
      };
      interfaces."eth0".ipv4.addresses = [
        # 176.9.151.89 declared in nixops -> infra / tools
        { address = myconfig.ips.production; prefixLength = 32; }
        { address = myconfig.ips.integration; prefixLength = 32; }
      ];
    };

    nixpkgs.config.packageOverrides = oldpkgs: rec {
      php = php72;
      php72 = (oldpkgs.php72.override {
        mysql.connector-c = pkgs.mariadb;
        config.php.mysqlnd = false;
        config.php.mysqli = false;
      }).overrideAttrs(old: rec {
        # Didn't manage to build with mysqli + mysql_config connector
        configureFlags = old.configureFlags ++ [
          "--with-mysqli=shared,mysqlnd"
          ];
        # preConfigure = (old.preConfigure or "") + ''
        #   export CPPFLAGS="$CPPFLAGS -I${pkgs.mariadb}/include/mysql/server";
        #   sed -i -e 's/#include "mysqli_priv.h"/#include "mysqli_priv.h"\n#include <mysql_version.h>/' \
        #     ext/mysqli/mysqli.c ext/mysqli/mysqli_prop.c
        #   '';
      });
      phpPackages = oldpkgs.php72Packages.override { inherit php; };
      composerEnv = import ./commons/composer-env.nix {
        inherit (pkgs) stdenv writeTextFile fetchurl php unzip;
      };
    };

    services.myWebsites.tools.databases.enable = true;
    services.myWebsites.tools.tools.enable = true;
    services.myWebsites.tools.dav.enable = true;
    services.myWebsites.tools.cloud.enable = true;
    services.myWebsites.tools.git.enable = true;
    services.myWebsites.tools.mastodon.enable = true;
    services.myWebsites.tools.mediagoblin.enable = true;
    services.myWebsites.tools.diaspora.enable = true;
    services.myWebsites.tools.etherpad-lite.enable = true;

    services.myWebsites.Chloe.production.enable = cfg.production.enable;
    services.myWebsites.Ludivine.production.enable = cfg.production.enable;
    services.myWebsites.Aten.production.enable = cfg.production.enable;
    services.myWebsites.PiedsJaloux.production.enable = cfg.production.enable;
    services.myWebsites.Connexionswing.production.enable = cfg.production.enable;
    services.myWebsites.Jerome.production.enable = cfg.production.enable;
    services.myWebsites.Nassime.production.enable = cfg.production.enable;
    services.myWebsites.Florian.production.enable = cfg.production.enable;
    services.myWebsites.DeniseJerome.production.enable = cfg.production.enable;
    services.myWebsites.Emilia.production.enable = cfg.production.enable;
    services.myWebsites.Capitaines.production.enable = cfg.production.enable;
    services.myWebsites.Immae.production.enable = cfg.production.enable;

    services.myWebsites.Chloe.integration.enable = cfg.integration.enable;
    services.myWebsites.Ludivine.integration.enable = cfg.integration.enable;
    services.myWebsites.Aten.integration.enable = cfg.integration.enable;
    services.myWebsites.PiedsJaloux.integration.enable = cfg.integration.enable;
    services.myWebsites.Connexionswing.integration.enable = cfg.integration.enable;
    services.myWebsites.TellesFlorian.integration.enable = true;
    services.myWebsites.Florian.integration.enable = true;

    services.myWebsites.apacheConfig = {
      gzip = {
        modules = [ "deflate" "filter" ];
        extraConfig = ''
          AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript
        '';
      };
      macros = {
        modules = [ "macro" ];
      };
      ldap = {
        modules = [ "ldap" "authnz_ldap" ];
        extraConfig = ''
          <IfModule ldap_module>
            LDAPSharedCacheSize 500000
            LDAPCacheEntries 1024
            LDAPCacheTTL 600
            LDAPOpCacheEntries 1024
            LDAPOpCacheTTL 600
          </IfModule>

          <Macro LDAPConnect>
            <IfModule authnz_ldap_module>
              AuthLDAPURL          ldap://ldap.immae.eu:389/dc=immae,dc=eu STARTTLS
              AuthLDAPBindDN       cn=httpd,ou=services,dc=immae,dc=eu
              AuthLDAPBindPassword "${myconfig.env.httpd.ldap.password}"
              AuthType             Basic
              AuthName             "Authentification requise (Acces LDAP)"
              AuthBasicProvider    ldap
            </IfModule>
          </Macro>

          <Macro Stats %{domain}>
            Alias /awstats /var/lib/goaccess/%{domain}
            <Directory /var/lib/goaccess/%{domain}>
              DirectoryIndex index.html
              AllowOverride None
              Require all granted
            </Directory>
            <Location /awstats>
              Use LDAPConnect
              Require ldap-group cn=%{domain},ou=stats,cn=httpd,ou=services,dc=immae,dc=eu
            </Location>
          </Macro>

          ErrorDocument 500 /maintenance_immae.html
          ErrorDocument 501 /maintenance_immae.html
          ErrorDocument 502 /maintenance_immae.html
          ErrorDocument 503 /maintenance_immae.html
          ErrorDocument 504 /maintenance_immae.html
          Alias /maintenance_immae.html ${../../www}/maintenance_immae.html
          ProxyPass /maintenance_immae.html !

          AliasMatch "(.*)/googleb6d69446ff4ca3e5.html" ${../../www}/googleb6d69446ff4ca3e5.html
        '';
      };
      http2 = {
        modules = [ "http2" ];
        extraConfig = ''
          Protocols h2 http/1.1
        '';
      };
      customLog = {
        extraConfig = ''
          LogFormat "%v:%p %h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combinedVhost
        '';
      };
    };

    system.activationScripts = {
      httpd = ''
        install -d -m 0755 /var/lib/acme/acme-challenge
        install -d -m 0750 -o wwwrun -g wwwrun /var/lib/php/sessions
        install -d -m 0750 -o wwwrun -g wwwrun /var/lib/php/sessions/adminer
        install -d -m 0750 -o wwwrun -g wwwrun /var/lib/php/sessions/mantisbt
        install -d -m 0750 -o wwwrun -g wwwrun /var/lib/php/sessions/davical
        '';
    };

    services.myPhpfpm = {
      phpPackage = pkgs.php;
      phpOptions = ''
        session.save_path = "/var/lib/php/sessions"
        session.gc_maxlifetime = 60*60*24*15
        session.cache_expire = 60*24*30
        '';
      extraConfig = ''
        log_level = notice
        '';
    };

    services.httpdProd = makeService "production" config.services.myWebsites.production;
    services.myWebsites.production.modules = makeModules cfg;
    services.myWebsites.production.extraConfig = makeExtraConfig cfg;

    services.httpdInte = makeService "integration" config.services.myWebsites.integration;
    services.myWebsites.integration.modules = makeModules cfg;
    services.myWebsites.integration.extraConfig = makeExtraConfig cfg;

    services.httpdTools = makeService "tools" config.services.myWebsites.tools;
    services.myWebsites.tools.modules = makeModules cfg;
    services.myWebsites.tools.extraConfig = makeExtraConfig cfg ++
    [ ''
        RedirectMatch ^/licen[cs]es?_et_tip(ping)?$ https://www.immae.eu/licences_et_tip.html
        RedirectMatch ^/licen[cs]es?_and_tip(ping)?$ https://www.immae.eu/licenses_and_tipping.html
        RedirectMatch ^/licen[cs]es?$ https://www.immae.eu/licenses_and_tipping.html
        RedirectMatch ^/tip(ping)?$ https://www.immae.eu/licenses_and_tipping.html
        RedirectMatch ^/(mentions|mentions_legales|legal)$ https://www.immae.eu/mentions.html
        RedirectMatch ^/CGU$ https://www.immae.eu/CGU
      ''
      ]
    ;
  };
}