Add spec for Photos::Thumbnail

app/services/photos/thumbnail.rb

@@ -8,7 +8,7 @@ class Photos::Thumbnail
   end
 
   def call
-    fetch_thumbnail_from_source
+    HTTParty.get(request_url, headers: headers)
   end
 
   private
@@ -35,6 +35,10 @@ class Photos::Thumbnail
     end
   end
 
+  def request_url
+    "#{source_url}#{source_path}"
+  end
+
   def headers
     request_headers = {
       'accept' => 'application/octet-stream'
@@ -44,11 +48,4 @@ class Photos::Thumbnail
 
     request_headers
   end
-
-  def fetch_thumbnail_from_source
-    url = "#{source_url}#{source_path}"
-    a = HTTParty.get(url, headers: headers)
-    pp url
-    a
-  end
 end

spec/services/photos/thumbnail_spec.rb

@@ -0,0 +1,77 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Photos::Thumbnail do
+  let(:user) { create(:user) }
+  let(:id) { 'photo123' }
+
+  describe '#call' do
+    subject { described_class.new(user, source, id).call }
+
+    context 'with immich source' do
+      let(:source) { 'immich' }
+      let(:api_key) { 'immich_key_123' }
+      let(:base_url) { 'https://photos.example.com' }
+      let(:expected_url) { "#{base_url}/api/assets/#{id}/thumbnail?size=preview" }
+      let(:expected_headers) do
+        {
+          'accept' => 'application/octet-stream',
+          'X-Api-Key' => api_key
+        }
+      end
+
+      before do
+        allow(user).to receive(:settings).and_return(
+          'immich_url' => base_url,
+          'immich_api_key' => api_key
+        )
+      end
+
+      it 'fetches thumbnail with correct parameters' do
+        expect(HTTParty).to receive(:get)
+          .with(expected_url, headers: expected_headers)
+          .and_return('thumbnail_data')
+
+        expect(subject).to eq('thumbnail_data')
+      end
+    end
+
+    context 'with photoprism source' do
+      let(:source) { 'photoprism' }
+      let(:base_url) { 'https://photoprism.example.com' }
+      let(:preview_token) { 'preview_token_123' }
+      let(:expected_url) { "#{base_url}/api/v1/t/#{id}/#{preview_token}/tile_500" }
+      let(:expected_headers) do
+        {
+          'accept' => 'application/octet-stream'
+        }
+      end
+
+      before do
+        allow(user).to receive(:settings).and_return(
+          'photoprism_url' => base_url
+        )
+        allow(Rails.cache).to receive(:read)
+          .with("#{Photoprism::CachePreviewToken::TOKEN_CACHE_KEY}_#{user.id}")
+          .and_return(preview_token)
+      end
+
+      it 'fetches thumbnail with correct parameters' do
+        expect(HTTParty).to receive(:get)
+          .with(expected_url, headers: expected_headers)
+          .and_return('thumbnail_data')
+
+        expect(subject).to eq('thumbnail_data')
+      end
+    end
+
+    context 'with unsupported source' do
+      let(:source) { 'unsupported' }
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(RuntimeError, 'Unsupported source: unsupported')
+      end
+    end
+  end
+end