kommode/gitea: hire cleaners

hosts/kommode/services/gitea/default.nix

@@ -8,6 +8,7 @@ in {
     ./customization
     ./gpg.nix
     ./import-users
+    ./vaskepersonalet.nix
     ./web-secret-provider
   ];
 

hosts/kommode/services/gitea/vaskepersonalet.nix

@@ -0,0 +1,59 @@
+{ config, ... }:
+let
+  cfg = config.services.gitea;
+  cacheDir = "/var/cache/${config.systemd.services.gitea.serviceConfig.CacheDirectory}";
+in
+{
+  systemd.services."gitea-vaskepersonalet" = {
+    description = "yeeet";
+    startAt = "hourly";
+
+    serviceConfig = rec {
+      User = cfg.user;
+      Group = cfg.group;
+
+      RuntimeDirectory = "gitea-vaskepersonalet";
+      RootDirectory = "/run/${RuntimeDirectory}";
+
+      BindPaths = [
+        builtins.storeDir
+        cacheDir
+        cfg.dump.backupDir
+      ];
+    };
+
+    script = let
+      percentageLimit = 80;
+    in ''
+      USED=$(df --output=pcent '${cacheDir}' | grep '[0-9]' | tr -d '%')
+      if [[ $USED -lt ${toString percentageLimit} ]]; then exit 0; fi
+
+      echo "omg omg, we're running out of space, imma yeet the cache"
+
+      rm -rf '${cacheDir}'/*
+      echo "yeetus deletus"
+
+      USED=$(df --output=pcent '${cacheDir}' | grep '[0-9]' | tr -d '%')
+      if [[ $USED -lt ${toString percentageLimit} ]]; then exit 0; fi
+
+      echo ""
+      echo "bruh, still low on space, yeeting old backups"
+      echo ""
+
+      # tail -n+2 ensure we keep at least one backup.
+      for file in $(ls -t1 '${cfg.dump.backupDir}' | sort --reverse | tail -n+2); do
+        echo "> Chose $file"
+        echo "> Do you really want to release this pokemon? [Y/n] Y"
+        rm "$file"
+        echo "> ..."
+        echo "> The pokemon was released back into the wild"
+        echo ""
+
+        USED=$(df --output=pcent '${cacheDir}' | grep '[0-9]' | tr -d '%')
+        if [[ $USED -lt ${toString percentageLimit} ]]; then exit 0; fi
+      done
+
+      echo "No way, we're still out of space? Not my problem anymore"
+    '';
+  };
+}