feat(wing): Wing 데모 사이트 프록시 API + 복수 Google Client ID 지원

- WingAisController: AIS 선박 위치 조회 프록시 (bbox 필터링 포함)
- WingDataController: 해역/케이블 정적 GeoJSON 데이터 서빙
- GoogleTokenVerifier: app.google.client-ids 복수 audience 지원
- wing-data/: zones, chinese-permitted GeoJSON 데이터 파일

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main/java/com/gcsc/guide/auth/GoogleTokenVerifier.java

@@ -8,7 +8,9 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 
+import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
 
 @Slf4j
 @Component
@@ -18,12 +20,26 @@ public class GoogleTokenVerifier {
     private final String allowedEmailDomain;
 
     public GoogleTokenVerifier(
-        @Value("${app.google.client-id}") String clientId,
+        @Value("${app.google.client-ids:}") String clientIdsCsv,
+        @Value("${app.google.client-id:}") String clientId,
         @Value("${app.allowed-email-domain}") String allowedEmailDomain
     ) {
+        List<String> audiences = new ArrayList<>();
+        if (clientIdsCsv != null && !clientIdsCsv.isBlank()) {
+            for (String part : clientIdsCsv.split(",")) {
+                String trimmed = part == null ? "" : part.trim();
+                if (!trimmed.isEmpty()) audiences.add(trimmed);
+            }
+        }
+        if (audiences.isEmpty() && clientId != null && !clientId.isBlank()) {
+            audiences.add(clientId.trim());
+        }
+        if (audiences.isEmpty()) {
+            log.warn("Google client id is not configured (app.google.client-id / app.google.client-ids empty). Google login will fail.");
+        }
         this.verifier = new GoogleIdTokenVerifier.Builder(
             new NetHttpTransport(), GsonFactory.getDefaultInstance())
-            .setAudience(Collections.singletonList(clientId))
+            .setAudience(audiences.isEmpty() ? Collections.emptyList() : audiences)
             .build();
         this.allowedEmailDomain = allowedEmailDomain;
     }

src/main/java/com/gcsc/guide/controller/WingAisController.java

@@ -0,0 +1,215 @@
+package com.gcsc.guide.controller;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.annotation.PostConstruct;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+@Slf4j
+@RestController
+@RequestMapping("/api/wing/ais-target")
+@RequiredArgsConstructor
+@Tag(name = "WING · AIS", description = "WING demo AIS proxy (JWT required)")
+public class WingAisController {
+
+    private final ObjectMapper objectMapper;
+
+    @Value("${app.wing.ais.upstream-base:http://211.208.115.83:8041}")
+    private String upstreamBase;
+
+    @Value("${app.wing.ais.timeout-ms:20000}")
+    private long timeoutMs;
+
+    private HttpClient httpClient;
+
+    @PostConstruct
+    void initHttpClient() {
+        this.httpClient = HttpClient.newBuilder()
+            .connectTimeout(Duration.ofSeconds(5))
+            .followRedirects(HttpClient.Redirect.NORMAL)
+            .build();
+    }
+
+    private record Bbox(double lonMin, double latMin, double lonMax, double latMax) {
+    }
+
+    @GetMapping("/search")
+    public ResponseEntity<?> search(
+        @RequestParam(name = "minutes") String minutesRaw,
+        @RequestParam(name = "bbox", required = false) String bboxRaw,
+        @RequestParam(name = "centerLon", required = false) Double centerLon,
+        @RequestParam(name = "centerLat", required = false) Double centerLat,
+        @RequestParam(name = "radiusMeters", required = false) Double radiusMeters
+    ) {
+        Integer minutes = parseMinutes(minutesRaw);
+        if (minutes == null) {
+            return error(HttpStatus.BAD_REQUEST, "invalid minutes", "BAD_REQUEST");
+        }
+
+        Bbox bbox = parseBbox(bboxRaw);
+        if (bboxRaw != null && bbox == null) {
+            return error(HttpStatus.BAD_REQUEST, "invalid bbox", "BAD_REQUEST");
+        }
+
+        URI upstreamUrl = buildUpstreamUrl(minutes, centerLon, centerLat, radiusMeters);
+        HttpRequest req = HttpRequest.newBuilder(upstreamUrl)
+            .timeout(Duration.ofMillis(timeoutMs))
+            .header("accept", "application/json")
+            .GET()
+            .build();
+
+        int status;
+        String body;
+        try {
+            HttpResponse<String> res = httpClient.send(req, HttpResponse.BodyHandlers.ofString());
+            status = res.statusCode();
+            body = res.body() == null ? "" : res.body();
+        } catch (java.net.http.HttpTimeoutException e) {
+            log.warn("AIS upstream timeout ({}ms): {}", timeoutMs, upstreamUrl);
+            return error(HttpStatus.GATEWAY_TIMEOUT, "upstream timeout (" + timeoutMs + "ms)", "UPSTREAM_TIMEOUT");
+        } catch (Exception e) {
+            log.warn("AIS upstream fetch failed: {} ({})", upstreamUrl, e.toString());
+            return error(HttpStatus.BAD_GATEWAY, "upstream fetch failed", "UPSTREAM_FETCH_FAILED");
+        }
+
+        if (status < 200 || status >= 300) {
+            log.warn("AIS upstream error: status={} url={}", status, upstreamUrl);
+            return error(HttpStatus.BAD_GATEWAY, "upstream error", "UPSTREAM");
+        }
+
+        // Fast path: no bbox requested, proxy raw payload.
+        if (bbox == null) {
+            return ResponseEntity.ok()
+                .contentType(MediaType.APPLICATION_JSON)
+                .body(body);
+        }
+
+        try {
+            Map<String, Object> json = objectMapper.readValue(body, new TypeReference<>() {
+            });
+
+            Object dataObj = json.get("data");
+            List<?> rows = dataObj instanceof List<?> l ? l : List.of();
+            List<Object> filtered = new ArrayList<>(rows.size());
+            for (Object row : rows) {
+                if (inBbox(row, bbox)) {
+                    filtered.add(row);
+                }
+            }
+
+            json.put("data", filtered);
+
+            Object msgObj = json.get("message");
+            String msg = msgObj instanceof String s ? s : "";
+            String suffix = " (bbox: " + filtered.size() + "/" + rows.size() + ")";
+            json.put("message", (msg + suffix).trim());
+
+            return ResponseEntity.ok()
+                .contentType(MediaType.APPLICATION_JSON)
+                .body(json);
+        } catch (Exception e) {
+            log.warn("AIS upstream JSON parse/filter failed: {}", e.toString());
+            return error(HttpStatus.BAD_GATEWAY, "upstream invalid json", "UPSTREAM_INVALID_JSON");
+        }
+    }
+
+    private Integer parseMinutes(String raw) {
+        if (raw == null) return null;
+        int minutes;
+        try {
+            minutes = Integer.parseInt(raw);
+        } catch (NumberFormatException e) {
+            return null;
+        }
+        if (minutes <= 0 || minutes > 60 * 24) return null;
+        return minutes;
+    }
+
+    private Bbox parseBbox(String raw) {
+        if (raw == null || raw.isBlank()) return null;
+        String[] parts = raw.split(",");
+        if (parts.length != 4) return null;
+        Double lonMin = toDouble(parts[0]);
+        Double latMin = toDouble(parts[1]);
+        Double lonMax = toDouble(parts[2]);
+        Double latMax = toDouble(parts[3]);
+        if (lonMin == null || latMin == null || lonMax == null || latMax == null) return null;
+
+        boolean ok =
+            lonMin >= -180 && lonMax <= 180 &&
+                latMin >= -90 && latMax <= 90 &&
+                lonMin < lonMax &&
+                latMin < latMax;
+        if (!ok) return null;
+        return new Bbox(lonMin, latMin, lonMax, latMax);
+    }
+
+    private boolean inBbox(Object row, Bbox bbox) {
+        if (!(row instanceof Map<?, ?> m)) return false;
+        Double lon = toDouble(m.get("lon"));
+        Double lat = toDouble(m.get("lat"));
+        if (lon == null || lat == null) return false;
+        return lon >= bbox.lonMin && lon <= bbox.lonMax && lat >= bbox.latMin && lat <= bbox.latMax;
+    }
+
+    private Double toDouble(Object value) {
+        if (value == null) return null;
+        if (value instanceof Number n) return n.doubleValue();
+        if (value instanceof String s) {
+            String t = s.trim();
+            if (t.isEmpty()) return null;
+            try {
+                return Double.parseDouble(t);
+            } catch (NumberFormatException e) {
+                return null;
+            }
+        }
+        return null;
+    }
+
+    private URI buildUpstreamUrl(int minutes, Double centerLon, Double centerLat, Double radiusMeters) {
+        String base = upstreamBase == null ? "" : upstreamBase.trim();
+        if (base.endsWith("/")) base = base.substring(0, base.length() - 1);
+        StringBuilder sb = new StringBuilder(base);
+        sb.append("/snp-api/api/ais-target/search");
+        sb.append("?minutes=").append(minutes);
+
+        // Upstream supports center/radius filtering; bbox is ignored (filtered server-side here).
+        if (centerLon != null && Double.isFinite(centerLon)) sb.append("&centerLon=").append(centerLon);
+        if (centerLat != null && Double.isFinite(centerLat)) sb.append("&centerLat=").append(centerLat);
+        if (radiusMeters != null && Double.isFinite(radiusMeters)) sb.append("&radiusMeters=").append(radiusMeters);
+
+        return URI.create(sb.toString());
+    }
+
+    private ResponseEntity<Map<String, Object>> error(HttpStatus status, String message, String errorCode) {
+        return ResponseEntity.status(status)
+            .contentType(MediaType.APPLICATION_JSON)
+            .body(Map.of(
+                "success", false,
+                "message", message,
+                "data", List.of(),
+                "errorCode", errorCode
+            ));
+    }
+}
+

src/main/java/com/gcsc/guide/controller/WingDataController.java

@@ -0,0 +1,57 @@
+package com.gcsc.guide.controller;
+
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
+import org.springframework.http.CacheControl;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.concurrent.TimeUnit;
+
+import static org.springframework.http.HttpStatus.NOT_FOUND;
+
+@RestController
+@RequestMapping("/api/wing/data")
+@RequiredArgsConstructor
+@Tag(name = "WING · Data", description = "WING embedded datasets (JWT required)")
+public class WingDataController {
+
+    @GetMapping(value = "/zones", produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<Resource> zones() {
+        return serveJson("wing-data/zones.wgs84.geojson");
+    }
+
+    @GetMapping(value = "/legacy", produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<Resource> legacyChinesePermitted() {
+        return serveJson("wing-data/chinese-permitted.v1.json");
+    }
+
+    @GetMapping(value = "/subcables/geo", produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<Resource> subcablesGeo() {
+        return serveJson("wing-data/subcables/cable-geo.json");
+    }
+
+    @GetMapping(value = "/subcables/details", produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<Resource> subcablesDetails() {
+        return serveJson("wing-data/subcables/cable-details.min.json");
+    }
+
+    private ResponseEntity<Resource> serveJson(String classpathLocation) {
+        Resource resource = new ClassPathResource(classpathLocation);
+        if (!resource.exists()) {
+            throw new ResponseStatusException(NOT_FOUND, "Resource not found: " + classpathLocation);
+        }
+        return ResponseEntity.ok()
+            // Authenticated endpoint: allow browser caching but keep it private.
+            .cacheControl(CacheControl.maxAge(6, TimeUnit.HOURS).cachePrivate())
+            .contentType(MediaType.APPLICATION_JSON)
+            .body(resource);
+    }
+}
+