fix: 페이스북 공개 피드 대체 수집 경로 추가

src/main/java/com/hlab/yanalyst/domain/social/FacebookPageFeedClient.java

@@ -26,6 +26,9 @@ import java.util.regex.Pattern;
 public class FacebookPageFeedClient implements SocialFeedClient {
     private static final String PAGE_PLUGIN_APP_ID = "776730922422337";
     private static final Pattern REEL_ID = Pattern.compile("/(?:reel|videos)/(\\d+)");
+    private static final Pattern READER_REEL = Pattern.compile(
+            "\\[!\\[[^]]*]\\((https?://[^)]+)\\)[^]]*]\\(https?://(?:www\\.)?facebook\\.com/reel/(\\d+)[^)]*\\)");
+    private static final Pattern READER_TITLE = Pattern.compile("(?m)^Title:\\s*(.+?)(?:\\s+Reels)?\\s*$");
     /** Facebook가 데이터센터별로 빈 피드를 돌려주는 경우가 있어 공식 로케일 호스트를 순서대로 시도한다. */
     private static final List<String> RENDERER_HOSTS = List.of(
             "www.facebook.com", "ko-kr.facebook.com", "en-gb.facebook.com");
@@ -36,6 +39,9 @@ public class FacebookPageFeedClient implements SocialFeedClient {
     @Value("${hlab.social-feed.max-items:25}")
     private int maxItems;
 
+    @Value("${hlab.social-feed.facebook-reader-enabled:true}")
+    private boolean readerFallbackEnabled;
+
     @Override
     public boolean supports(SocialPlatform platform) {
         return platform == SocialPlatform.FACEBOOK;
@@ -53,10 +59,41 @@ public class FacebookPageFeedClient implements SocialFeedClient {
                 lastFailure = e;
             }
         }
+        if (readerFallbackEnabled) {
+            try {
+                SocialFeedBatch batch = fetchViaReader(channel, false);
+                if (batch.videos().isEmpty()) batch = fetchViaReader(channel, true);
+                if (!batch.videos().isEmpty()) return batch;
+            } catch (IllegalStateException e) {
+                lastFailure = e;
+            }
+        }
         throw new IllegalStateException("Facebook 공개 피드를 읽지 못했습니다: "
                 + (lastFailure == null ? "빈 응답" : friendly(lastFailure)), lastFailure);
     }
 
+    /** 운영 서버 IP가 Facebook에서 차단될 때 공개 페이지를 브라우저로 읽어 주는 Reader API를 사용한다. */
+    private SocialFeedBatch fetchViaReader(SocialChannel channel, boolean noCache) {
+        String source = channel.getSourceUrl().replaceAll("/+$", "") + "/reels/";
+        URI uri = URI.create("https://r.jina.ai/" + source);
+        HttpHeaders headers = new HttpHeaders();
+        headers.set(HttpHeaders.USER_AGENT, "Mozilla/5.0");
+        headers.set("X-Engine", "browser");
+        if (noCache) headers.set("X-No-Cache", "true");
+        else headers.set("X-Cache-Tolerance", "3600");
+        try {
+            ResponseEntity<String> response = restTemplate.exchange(uri, HttpMethod.GET,
+                    new HttpEntity<>(headers), String.class);
+            if (!response.getStatusCode().is2xxSuccessful() || response.getBody() == null) {
+                throw new IllegalStateException("Facebook Reader 응답이 비어 있습니다.");
+            }
+            return parseReader(response.getBody(), Math.max(1, maxItems));
+        } catch (Exception e) {
+            if (e instanceof IllegalStateException state) throw state;
+            throw new IllegalStateException("Facebook Reader 피드 오류: " + friendly(e), e);
+        }
+    }
+
     private SocialFeedBatch fetchFromHost(SocialChannel channel, String host) {
         try {
             Map<String, Object> config = new LinkedHashMap<>();
@@ -143,6 +180,22 @@ public class FacebookPageFeedClient implements SocialFeedClient {
         return new SocialFeedBatch(channelTitle, null, new ArrayList<>(unique.values()));
     }
 
+    static SocialFeedBatch parseReader(String markdown, int limit) {
+        String channelTitle = null;
+        Matcher titleMatcher = READER_TITLE.matcher(markdown == null ? "" : markdown);
+        if (titleMatcher.find()) channelTitle = titleMatcher.group(1).strip();
+        LinkedHashMap<String, SocialVideoCandidate> unique = new LinkedHashMap<>();
+        Matcher reelMatcher = READER_REEL.matcher(markdown == null ? "" : markdown);
+        while (reelMatcher.find() && unique.size() < limit) {
+            String thumbnail = reelMatcher.group(1).replace("&amp;", "&");
+            String id = reelMatcher.group(2);
+            String title = (channelTitle == null ? "Facebook" : channelTitle) + " · Reel " + id;
+            unique.putIfAbsent(id, new SocialVideoCandidate(id,
+                    "https://www.facebook.com/reel/" + id, title, thumbnail, null));
+        }
+        return new SocialFeedBatch(channelTitle, null, new ArrayList<>(unique.values()));
+    }
+
     private static String findThumbnail(Element post) {
         for (Element image : post.select("img[src]")) {
             String src = image.absUrl("src");

src/main/resources/application.yml

@@ -137,6 +137,7 @@ hlab:
     max-items: ${SOCIAL_FEED_MAX_ITEMS:25}
     timeout-seconds: ${SOCIAL_FEED_TIMEOUT_SECONDS:90}
     cookies-file: ${SOCIAL_FEED_COOKIES_FILE:}
+    facebook-reader-enabled: ${SOCIAL_FEED_FACEBOOK_READER_ENABLED:true}
     seed:
       phutunet-enabled: ${SOCIAL_SEED_PHUTUNET_ENABLED:true}
       phutunet-url: ${SOCIAL_SEED_PHUTUNET_URL:https://www.facebook.com/phutunet/reels/}

src/test/java/com/hlab/yanalyst/domain/social/FacebookPageFeedClientTest.java

@@ -32,4 +32,22 @@ class FacebookPageFeedClientTest {
         assertThat(batch.videos().get(0).thumbnailUrl()).isEqualTo("https://cdn.example/thumb.jpg");
         assertThat(batch.videos().get(0).publishedAt()).isNotNull();
     }
+
+    @Test
+    void parsesReaderFallbackReels() {
+        String markdown = """
+                Title: Phutu Crafts Reels
+
+                [![Image 4](https://cdn.example/one.jpg?x=1&y=2) 153K](https://www.facebook.com/reel/2234599224051571/?s=profile)
+
+                [![Image 5](https://cdn.example/two.jpg) 1.8M](https://www.facebook.com/reel/926151600080380/)
+                """;
+
+        SocialFeedBatch batch = FacebookPageFeedClient.parseReader(markdown, 25);
+
+        assertThat(batch.channelTitle()).isEqualTo("Phutu Crafts");
+        assertThat(batch.videos()).extracting(SocialVideoCandidate::externalVideoId)
+                .containsExactly("2234599224051571", "926151600080380");
+        assertThat(batch.videos().get(0).thumbnailUrl()).isEqualTo("https://cdn.example/one.jpg?x=1&y=2");
+    }
 }