From 19b2b8046dbefaf3e92d3ae6f9fb6119557cd44d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Silas=20Sch=C3=B6ffel?= <sils@sils.li>
Date: Thu, 28 Mar 2024 23:56:37 +0100
Subject: [PATCH] nixos/invidious-router: init module

---
 nixos/modules/module-list.nix                 |   1 +
 .../services/misc/invidious-router.nix        | 121 ++++++++++++++++++
 2 files changed, 122 insertions(+)
 create mode 100644 nixos/modules/services/misc/invidious-router.nix

diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 90b37e878312..9dd41ff8c778 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -712,6 +712,7 @@
   ./services/misc/homepage-dashboard.nix
   ./services/misc/ihaskell.nix
   ./services/misc/input-remapper.nix
+  ./services/misc/invidious-router.nix
   ./services/misc/irkerd.nix
   ./services/misc/jackett.nix
   ./services/misc/jellyfin.nix
diff --git a/nixos/modules/services/misc/invidious-router.nix b/nixos/modules/services/misc/invidious-router.nix
new file mode 100644
index 000000000000..01ef18dad535
--- /dev/null
+++ b/nixos/modules/services/misc/invidious-router.nix
@@ -0,0 +1,121 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.services.invidious-router;
+  settingsFormat = pkgs.formats.yaml {};
+  configFile = settingsFormat.generate "config.yaml" cfg.settings;
+in {
+  meta.maintainers = [lib.maintainers.s1ls];
+
+  options.services.invidious-router = {
+    enable = lib.mkEnableOption "Enables the invidious-router service";
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 8050;
+      description = lib.mdDoc ''
+        Port to bind to.
+      '';
+    };
+    address = lib.mkOption {
+      type = lib.types.str;
+      default = "127.0.0.1";
+      description = lib.mdDoc ''
+        Address on which invidious-router should listen on.
+      '';
+    };
+    settings = lib.mkOption {
+      type = lib.types.submodule {
+        freeformType = settingsFormat.type;
+      };
+      default = {
+        app = {
+          listen = "127.0.0.1:8050";
+          enable_youtube_fallback = false;
+          reload_instance_list_interval = "60s";
+        };
+        api = {
+          enabled = true;
+          url = "https://api.invidious.io/instances.json";
+          filter_regions = true;
+          allowed_regions = [
+            "AT"
+            "DE"
+            "CH"
+          ];
+        };
+        healthcheck = {
+          path = "/";
+          allowed_status_codes = [
+            200
+          ];
+          timeout = "1s";
+          interval = "10s";
+          filter_by_response_time = {
+            enabled = true;
+            qty_of_top_results = 3;
+          };
+          minimum_ratio = 0.2;
+          remove_no_ratio = true;
+          text_not_present = "YouTube is currently trying to block Invidious instances";
+        };
+      };
+      description = lib.mdDoc ''
+        Configuration for invidious-router.
+        Check https://gitlab.com/gaincoder/invidious-router#configuration
+        for configuration options.
+      '';
+    };
+    package = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.invidious-router;
+      defaultText = lib.literalExpression "pkgs.invidious-router";
+      description = lib.mdDoc ''
+        The invidious-router package to use.
+      '';
+    };
+    nginx = {
+      enable = lib.mkEnableOption (lib.mdDoc ''
+        Automatic nginx proxy configuration
+      '');
+      domain = lib.mkOption {
+        type = lib.types.str;
+        example = "invidious-router.example.com";
+        description = lib.mdDoc ''
+          The domain on which invidious-router should be served.
+        '';
+      };
+      extraDomains = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [];
+        description = lib.mdDoc ''
+          Additional domains to serve invidious-router on.
+        '';
+      };
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    systemd.services.invidious-router = {
+      wantedBy = ["multi-user.target"];
+      serviceConfig = {
+        Restart = "on-failure";
+        ExecStart = "${lib.getExe cfg.package} --configfile ${configFile}";
+        DynamicUser = "yes";
+      };
+    };
+
+    services.nginx.virtualHosts = lib.mkIf cfg.nginx.enable {
+      ${cfg.nginx.domain} = {
+        locations."/" = {
+          recommendedProxySettings = true;
+          proxyPass = "http://${cfg.address}:${toString cfg.port}";
+        };
+        enableACME = true;
+        forceSSL = true;
+        serverAliases = cfg.nginx.extraDomains;
+      };
+    };
+  };
+}