cluster/catalog: add actions for secrets

cluster/catalog/default.nix

@@ -1,5 +1,6 @@
 {
   imports = [
     ./services.nix
+    ./secrets.nix
   ];
 }

cluster/catalog/secrets.nix

@@ -0,0 +1,73 @@
+{ config, lib, withSystem, ... }:
+
+let
+  inherit (config) cluster hours;
+in
+
+{
+  perSystem = { config, pkgs, system, ... }: {
+    catalog.cluster = {
+      secrets = lib.pipe cluster.config.services [
+        (lib.mapAttrsToList (svcName: svcConfig: lib.mapAttrsToList (secretName: secretConfig: {
+          name = "${svcName}/${secretName}";
+          value = {
+            description = "Cluster secret '${secretName}' of service '${svcName}'";
+            actions = let
+              agenixRules = builtins.toFile "agenix-rules-shim.nix" /*nix*/ ''
+                builtins.fromJSON (builtins.readFile (builtins.getEnv "AGENIX_KEYS_JSON"))
+              '';
+
+              mkKeys = secretFile: nodes: builtins.toFile "agenix-keys.json" (builtins.toJSON {
+                "${secretFile}".publicKeys = (map (hour: hours.${hour}.ssh.id.publicKey) nodes) ++ cluster.config.secrets.extraKeys;
+              });
+
+              setupCommands = secretFile: nodes: let
+                agenixKeysJson = mkKeys secretFile nodes;
+              in ''
+                export RULES='${agenixRules}'
+                export AGENIX_KEYS_JSON='${agenixKeysJson}'
+                mkdir -p "$PRJ_ROOT/cluster/secrets"
+                cd "$PRJ_ROOT/cluster/secrets"
+              '';
+            in (lib.optionalAttrs (secretConfig.generate != null) {
+              generateSecret = {
+                description = "Generate this secret";
+                command = if secretConfig.shared then let
+                  secretFile = "${svcName}-${secretName}.age";
+                in ''
+                  ${setupCommands secretFile secretConfig.nodes}
+                  ${withSystem system secretConfig.generate} | agenix -e '${secretFile}'
+                '' else lib.concatStringsSep "\n" (map (node: let
+                  secretFile = "${svcName}-${secretName}-${node}.age";
+                in ''
+                  ${setupCommands secretFile [ node ]}
+                  ${withSystem system secretConfig.generate} | agenix -e '${secretFile}'
+                '') secretConfig.nodes);
+              };
+            }) // (if secretConfig.shared then let
+              secretFile = "${svcName}-${secretName}.age";
+            in {
+              editSecret = {
+                description = "Edit this secret";
+                command = ''
+                  ${setupCommands secretFile secretConfig.nodes}
+                  agenix -e '${secretFile}'
+                '';
+              };
+            } else lib.mapAttrs' (name: lib.nameValuePair "editSecretInstance-${name}") (lib.genAttrs secretConfig.nodes (node: let
+              secretFile = "${svcName}-${secretName}-${node}.age";
+            in {
+              description = "Edit this secret for '${node}'";
+              command = ''
+                ${setupCommands secretFile [ node ]}
+                agenix -e '${secretFile}'
+              '';
+            })));
+          };
+        }) svcConfig.secrets))
+        lib.concatLists
+        lib.listToAttrs
+      ];
+    };
+  };
+}