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{ config, lib, pkgs, ... }:

with import <stockholm/lib>;

let

  out = {
    services.nginx.enable = true;
    krebs.git = {
      enable = true;
      cgit = {
        settings = {
          root-title = "public repositories at ${config.krebs.build.host.name}";
          root-desc = "keep calm and engage";
        };
      };
      repos = mapAttrs (_: s: removeAttrs s ["collaborators"]) repos;
      rules = rules;
    };

    krebs.iptables.tables.filter.INPUT.rules = [
      { predicate = "-i retiolum -p tcp --dport 80"; target = "ACCEPT"; }
    ];
  };

  repos =
    public-repos //
    optionalAttrs config.krebs.build.host.secure restricted-repos;

  rules = concatMap make-rules (attrValues repos);

  public-repos = mapAttrs make-public-repo {
    news = {
      cgit.desc = "take a rss feed and a timeout and print it to stdout";
      cgit.section = "software";
    };
    nixpkgs = {
      cgit.desc = "nixpkgs fork";
      cgit.section = "configuration";
    };
    populate = {
      cgit.section = "software";
    };
    stockholm = {
      cgit.desc = "take all the computers hostage, they'll love you!";
      cgit.section = "configuration";
    };
    stockholm-issues = {
      cgit.desc = "stockholm issues";
      cgit.section = "issues";
    };
    the_playlist = {
      cgit.desc = "Good Music collection + tools";
      cgit.section  = "art";
    };
  } // mapAttrs make-public-repo-silent {
  };

  restricted-repos = mapAttrs make-restricted-repo (
    {
      brain = {
        collaborators = with config.krebs.users; [ tv makefu ];
        announce = true;
      };
    } //
    import <secrets/repos.nix> { inherit config lib pkgs; }
  );

  make-public-repo = name: { cgit ? {}, ... }: {
    inherit cgit name;
    public = true;
    hooks = {
      post-receive = pkgs.git-hooks.irc-announce {
        # TODO make nick = config.krebs.build.host.name the default
        nick = config.krebs.build.host.name;
        channel = "#retiolum";
        server = "ni.r";
        verbose = config.krebs.build.host.name == "prism";
        # TODO define branches in some kind of option per repo
        branches = [ "master" "staging*" ];
      };
    };
  };

  make-public-repo-silent = name: { cgit ? {}, ... }: {
    inherit cgit name;
    public = true;
  };

  make-restricted-repo = name: { collaborators ? [], announce ? false, hooks ? {}, ... }: {
    inherit collaborators name;
    public = false;
    hooks = optionalAttrs announce {
      post-receive = pkgs.git-hooks.irc-announce {
        # TODO make nick = config.krebs.build.host.name the default
        nick = config.krebs.build.host.name;
        channel = "#retiolum";
        server = "ni.r";
        verbose = true;
        # TODO define branches in some kind of option per repo
        branches = [ "master" "staging*" ];
      };
    } // hooks;
  };

  make-rules =
    with git // config.krebs.users;
    repo:
      singleton {
        user = [ lass lass-shodan ];
        repo = [ repo ];
        perm = push "refs/*" [ non-fast-forward create delete merge ];
      } ++
      optional repo.public {
        user = attrValues config.krebs.users;
        repo = [ repo ];
        perm = fetch;
      } ++
      optional (length (repo.collaborators or []) > 0) {
        user = repo.collaborators;
        repo = [ repo ];
        perm = fetch;
      };

in out