From 4a24f168e3fb44073237d9aca95a97e77bdefa3c Mon Sep 17 00:00:00 2001
From: Quentin Aristote <quentin@aristote.fr>
Date: Sun, 27 Nov 2022 17:41:34 +0100
Subject: services: web: rss: make configuration into a module

---
 config/services/web/rss/default.nix | 53 ++++++++++++++++++---------
 modules/default.nix                 |  1 +
 modules/rss-bridge.nix              | 71 +++++++++++++++++++++++++++++++++++++
 tests/configuration.nix             |  2 ++
 4 files changed, 111 insertions(+), 16 deletions(-)
 create mode 100644 modules/rss-bridge.nix

diff --git a/config/services/web/rss/default.nix b/config/services/web/rss/default.nix
index 18a6763..acc9331 100644
--- a/config/services/web/rss/default.nix
+++ b/config/services/web/rss/default.nix
@@ -2,31 +2,52 @@
 
 let
   cfg = config.services.rss-bridge;
-  debug = true;
-  rss-bridge = pkgs.rss-bridge.overrideAttrs (oldAttrs:
-    oldAttrs // {
-      installPhase = oldAttrs.installPhase + ''
-        pushd $out/bridges
-        ln -sf ${./ParisJazzClubBridge.php} ParisJazzClubBridge.php
-        ln -sf ${./MaisonDeLaRadioBridge.php} MaisonDeLaRadioBridge.php
-        ln -sf ${./FipAlbumsBridge.php} FipAlbumsBridge.php
-        ln -sf ${./WhatsOnMubiBridge.php} WhatsOnMubiBridge.php
-        popd
-      '' + lib.optionalString debug ''
-        touch $out/DEBUG
-      '';
-    });
+  # debug = true;
+  # rss-bridge = pkgs.rss-bridge.overrideAttrs (oldAttrs:
+  #   oldAttrs // {
+  #     installPhase = oldAttrs.installPhase + ''
+  #       pushd $out/bridges
+  #       ln -sf ${./ParisJazzClubBridge.php} ParisJazzClubBridge.php
+  #       ln -sf ${./MaisonDeLaRadioBridge.php} MaisonDeLaRadioBridge.php
+  #       ln -sf ${./FipAlbumsBridge.php} FipAlbumsBridge.php
+  #       ln -sf ${./WhatsOnMubiBridge.php} WhatsOnMubiBridge.php
+  #       popd
+  #     '' + lib.optionalString debug ''
+  #       touch $out/DEBUG
+  #     '';
+  #   });
 in {
   services.rss-bridge = {
     enable = true;
-    whitelist = [ "ParisJazzClub" "MaisonDeLaRadio" "FipAlbumsBridge" "WhatsOnMubi" ];
+    # whitelist = [ "ParisJazzClub" "MaisonDeLaRadio" "FipAlbumsBridge" "WhatsOnMubi" ];
+    extraBridges = [
+      # Music
+      {
+        name = "FipAlbums";
+        source = ./FipAlbumsBridge.php;
+      }
+      ## Concerts
+      {
+        name = "ParisJazzClub";
+        source = ./ParisJazzClubBridge.php;
+      }
+      {
+        name = "MaisonDeLaRadio";
+        source = ./MaisonDeLaRadioBridge.php;
+      }
+      # Cinema
+      {
+        name = "WhatsOnMubi";
+        source = ./WhatsOnMubiBridge.php;
+      }
+    ];
     virtualHost = "rss";
   };
 
   services.nginx = lib.mkIf (cfg.virtualHost != null) {
     virtualHosts.${cfg.virtualHost} = {
       serverName = "rss.${config.networking.domain}";
-      root = lib.mkForce "${rss-bridge}";
+      # root = lib.mkForce "${rss-bridge}";
       forceSSL = true;
       enableACME = true;
     };
diff --git a/modules/default.nix b/modules/default.nix
index d09a8c0..95f75b4 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -3,5 +3,6 @@
 {
   imports = [
     ./filtron.nix
+    ./rss-bridge.nix
   ];
 }
diff --git a/modules/rss-bridge.nix b/modules/rss-bridge.nix
new file mode 100644
index 0000000..c7aaf05
--- /dev/null
+++ b/modules/rss-bridge.nix
@@ -0,0 +1,71 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.services.rss-bridge;
+  rss-bridge = pkgs.rss-bridge.overrideAttrs (oldAttrs:
+    oldAttrs // {
+      installPhase = oldAttrs.installPhase + ''
+        pushd $out/bridges
+        ln -sf ${./ParisJazzClubBridge.php} ParisJazzClubBridge.php
+        ln -sf ${./MaisonDeLaRadioBridge.php} MaisonDeLaRadioBridge.php
+        ln -sf ${./FipAlbumsBridge.php} FipAlbumsBridge.php
+        ln -sf ${./WhatsOnMubiBridge.php} WhatsOnMubiBridge.php
+        popd
+      '' + lib.optionalString debug ''
+        touch $out/DEBUG
+      '';
+    });
+in {
+  options.services.rss-bridge = {
+    package = mkOption {
+      type = types.package;
+      description = "Which derivation to use.";
+      default = pkgs.rss-bridge;
+      defaultText = literalExample "pkgs.rss-bridge";
+    };
+    debug = mkEnableOption "debug mode";
+    extraBridges = mkOption {
+      type = types.listOf (types.submodule {
+        options = {
+          name = mkOption {
+            type = types.strMatching "[a-zA-Z0-9]*";
+            description = ''
+              The name of the bridge.
+              It need not include 'Bridge' at the end, unlike required in RSS-Bridge.
+            '';
+            example = "SomeAppWithANewsletter";
+          };
+          source = mkOption {
+            type = types.path;
+            description = ''
+              The path to a file whose contents is the PHP sourcecode of the bridge.
+              See also the RSS-Bridge documentation: https://rss-bridge.github.io/rss-bridge/Bridge_API/index.html.
+            '';
+          };
+        };
+      });
+      default = [ ];
+      description = ''
+        A list of additional bridges that aren't already included in RSS-Bridge.
+        These bridges are automatically whitelisted'';
+    };
+  };
+
+  config.services.rss-bridge.whitelist =
+    map (bridge: bridge.name) cfg.extraBridges;
+  config.services.nginx = mkIf (cfg.virtualHost != null) {
+    virtualHosts.${cfg.virtualHost}.root = mkIf (cfg.extraBridges != [ ])
+      (mkForce (pkgs.runCommand "rss-bridge" { } (''
+        mkdir -p $out/bridges
+        cp -r ${cfg.package}/* $out/
+        pushd $out/bridges 
+      '' + concatStringsSep "\n"
+        (map (bridge: ''ln -sf ${bridge.source} "${bridge.name}Bridge.php"'')
+          cfg.extraBridges) + ''
+            popd
+          '' + lib.optionalString cfg.debug ''
+            touch $out/DEBUG
+          '')));
+  };
+}
diff --git a/tests/configuration.nix b/tests/configuration.nix
index 37b043c..a1ccf52 100644
--- a/tests/configuration.nix
+++ b/tests/configuration.nix
@@ -29,6 +29,8 @@ in {
 
   services.filtron.rules = lib.mkForce [ ];
 
+  services.rss-bridge.debug = true;
+
   services.nginx.virtualHosts = {
     quentin = nginxMakeLocal 8080;
     searx = nginxMakeLocal 8081;
-- 
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