From 504b1b90e809934a01357450ccdf35c4e4afc74d Mon Sep 17 00:00:00 2001
From: tv <tv@shackspace.de>
Date: Thu, 23 Jul 2015 00:37:21 +0200
Subject: * tv identity: define type harder

---
 3modules/tv/identity.nix | 119 +++++++++++++++++++++--------------------------
 1 file changed, 54 insertions(+), 65 deletions(-)

(limited to '3modules/tv/identity.nix')

diff --git a/3modules/tv/identity.nix b/3modules/tv/identity.nix
index d3ac91393..0b94dff85 100644
--- a/3modules/tv/identity.nix
+++ b/3modules/tv/identity.nix
@@ -1,6 +1,6 @@
-{ config, lib, ... }:
+{ config, lib, pkgs, ... }:
 
-with lib;
+with import ../../4lib/tv { inherit lib pkgs; };
 let
   cfg = config.tv.identity;
 
@@ -13,77 +13,66 @@ let
     enable = mkEnableOption "tv.identity";
 
     self = mkOption {
-      type = types.unspecified;
+      type = types.host;
     };
+
+    others = mkOption {
+      type = types.host;
+      default = filterAttrs (name: _host: name != cfg.self.name) cfg.hosts;
+    };
+
     hosts = mkOption {
-      type = with types; attrsOf unspecified;
-      default = {
-        cd = {
-          #dc = "cac";
-          dc = "tv";
-          fqdn = "cd.retiolum";
-          subdomains = [
-            "cgit"
-          ];
-          addr = "10.243.113.222";
-          addr6 = "42:4522:25f8:36bb:8ccb:0150:231a:2af3";
-          #internet-addr = "162.219.5.183";
-          cores = 2;
-        };
-        mkdir = {
-          #dc = "cac";
-          dc = "tv";
-          fqdn = "mkdir.retiolum";
-          subdomains = [
-            "cgit"
-          ];
-          addr = "10.243.113.223";
-          cores = 1;
-        };
-        nomic = {
-          #dc = "gg";
-          dc = "tv";
-          fqdn = "nomic.retiolum";
-          subdomains = [
-            "cgit"
-          ];
-          addr = "10.243.0.110";
-          cores = 2;
-        };
-        rmdir = {
-          #dc = "cac";
-          dc = "tv";
-          fqdn = "rmdir.retiolum";
-          subdomains = [
-            "cgit"
-          ];
-          addr = "10.243.113.224";
-          #addr = "42:4522:25f8:36bb:8ccb:0150:231a:2af5";
-          cores = 1;
-        };
-        wu = {
-          #dc = "gg";
-          dc = "tv";
-          fqdn = "wu.retiolum";
-          subdomains = [
-            "cgit"
-          ];
-          addr = "10.243.13.37";
-          cores = 8;
-        };
-      };
+      type = with types; attrsOf host;
+      apply = mapAttrs (name: value: value // { inherit name; });
     };
   };
 
   imp = {
     networking.extraHosts =
-      let
-        f = name: { addr, fqdn, subdomains, ... }: ''
-          ${addr} ${toString (map (s: "${s}.${name} ${s}.${fqdn}") subdomains)}
-        '';
-      in
-      concatStringsSep "\n" (mapAttrsToList f cfg.hosts);
+      concatStringsSep "\n" (flatten (
+        # TODO deepMap ["hosts" "nets"] (hostname: host: netname: net:
+        mapAttrsToList (hostname: host:
+          mapAttrsToList (netname: net:
+            let
+              aliases = toString (unique (longs ++ shorts));
+              longs = (splitByProvider net.aliases).hosts;
+              shorts = map (removeSuffix ".${cfg.self.search}") longs;
+            in
+            map (addr: "${addr} ${aliases}") net.addrs
+          ) host.nets
+        ) cfg.hosts
+      ));
+  };
+
+  # TODO move domain name providers to a dedicated module
+  # providers : tree label providername
+  providers = {
+    internet = "hosts";
+    retiolum = "hosts";
+    de.viljetic = "regfish";
+    de.krebsco = "ovh";
   };
 
+  # splitByProvider : [alias] -> set providername [alias]
+  splitByProvider = foldl (acc: alias: insert (providerOf alias) alias acc) {};
+
+  # providerOf : alias -> providername
+  providerOf = alias:
+    tree-get (splitString "." alias) providers;
+
+  # insert : k -> v -> set k [v] -> set k [v]
+  insert = name: value: set:
+    set // { ${name} = set.${name} or [] ++ [value]; };
+
+  # tree k v = set k (either v (tree k v))
+
+  # tree-get : [k] -> tree k v -> v
+  tree-get = path: x:
+    let
+      y = x.${last path};
+    in
+    if typeOf y != "set"
+      then y
+      else tree-get (init path) y;
 in
 out
-- 
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