const dns = require("dns").promises;
const net = require("net");
const { subscribeWebEvents } = require("./web-events");
const {
  OVERLAY_CAPABILITIES,
  canAccessOverlay
} = require("./overlay-permissions");
const { getOverlayModuleType, listOverlayModuleTypes } = require("./overlay-modules");
const {
  addModule,
  addScene,
  buildPublicState,
  createOverlay,
  deleteModule,
  deleteOverlay,
  deleteScene,
  duplicateModule,
  duplicateOverlay,
  duplicateScene,
  getObsSettings,
  getOverlay,
  listOverlays,
  regenerateOverlayToken,
  regenerateSceneToken,
  refreshModule,
  reorderModules,
  reorderOverlays,
  reorderScenes,
  resolvePublicOverlay,
  saveObsSettings,
  setActiveScene,
  updateModule,
  updateModuleTransform,
  updateOverlay,
  updateScene
} = require("./overlays");
const {
  listOverlayConnectorProviders,
  overlayConnectorManager
} = require("./overlay-connectors");

const externalHealthCache = new Map();

function isPrivateAddress(address) {
  if (!address) return true;
  if (net.isIPv4(address)) {
    const parts = address.split(".").map(Number);
    return parts[0] === 10 || parts[0] === 127 || parts[0] === 0 ||
      (parts[0] === 169 && parts[1] === 254) ||
      (parts[0] === 172 && parts[1] >= 16 && parts[1] <= 31) ||
      (parts[0] === 192 && parts[1] === 168);
  }
  const normalized = String(address).toLowerCase();
  return normalized === "::1" || normalized === "::" || normalized.startsWith("fc") ||
    normalized.startsWith("fd") || normalized.startsWith("fe8") || normalized.startsWith("fe9") ||
    normalized.startsWith("fea") || normalized.startsWith("feb") || normalized.startsWith("::ffff:127.");
}

async function isPrivateHealthTarget(url) {
  const parsed = new URL(url);
  const hostname = parsed.hostname.toLowerCase();
  if (hostname === "localhost" || hostname.endsWith(".localhost")) return true;
  if (net.isIP(hostname)) return isPrivateAddress(hostname);
  const addresses = await dns.lookup(hostname, { all: true, verbatim: true });
  return !addresses.length || addresses.some((entry) => isPrivateAddress(entry.address));
}

async function fetchPublicOverlay(url, signal, redirects = 0) {
  if (redirects > 4) throw new Error("Too many redirects.");
  if (await isPrivateHealthTarget(url)) return null;
  const response = await fetch(url, {
    method: "GET",
    redirect: "manual",
    signal,
    headers: {
      Accept: "text/html,application/xhtml+xml,text/plain;q=0.8,*/*;q=0.2",
      "User-Agent": "Lumi-Overlay-Health/1.0"
    }
  });
  if (response.status >= 300 && response.status < 400 && response.headers.get("location")) {
    await response.body?.cancel?.().catch(() => {});
    const nextUrl = new URL(response.headers.get("location"), url).toString();
    return fetchPublicOverlay(nextUrl, signal, redirects + 1);
  }
  return response;
}

async function probeExternalOverlay(url) {
  const controller = new AbortController();
  const timeout = setTimeout(() => controller.abort(), 8000);
  try {
    const response = await fetchPublicOverlay(url, controller.signal);
    if (!response) {
      return {
        healthy: true,
        skipped: true,
        status: null,
        reason: "Private and local website addresses are refreshed but not probed by Lumi."
      };
    }
    if (!response.ok) {
      response.body?.cancel?.().catch?.(() => {});
      return { healthy: false, status: response.status, reason: `The website returned HTTP ${response.status}.` };
    }
    const contentType = String(response.headers.get("content-type") || "").toLowerCase();
    if (contentType && !/(html|xhtml|text|javascript|json|svg)/i.test(contentType)) {
      response.body?.cancel?.().catch?.(() => {});
      return { healthy: false, status: response.status, reason: "The website returned an unexpected content type." };
    }
    const reader = response.body?.getReader?.();
    let sample = "";
    if (reader) {
      const decoder = new TextDecoder();
      while (sample.length < 65536) {
        const { done, value } = await reader.read();
        if (done) break;
        sample += decoder.decode(value, { stream: true });
      }
      await reader.cancel().catch(() => {});
    }
    if (!sample.trim()) {
      return { healthy: false, status: response.status, reason: "The website returned an empty reply." };
    }
    if (contentType.includes("html") && !/<(?:!doctype|html|head|body|script|style|div|canvas|svg)\b/i.test(sample)) {
      return { healthy: false, status: response.status, reason: "The website reply did not look like a usable overlay page." };
    }
    return {
      healthy: true,
      status: response.status,
      reason: null,
      checked_at: Date.now(),
      etag: response.headers.get("etag") || null,
      last_modified: response.headers.get("last-modified") || null
    };
  } catch (error) {
    return {
      healthy: false,
      status: null,
      reason: error?.name === "AbortError" ? "The website took too long to reply." : "The website could not be reached."
    };
  } finally {
    clearTimeout(timeout);
  }
}

function noStore(res) {
  res.set("Cache-Control", "no-store, private");
  res.set("Pragma", "no-cache");
}

function publicOverlayContext(req) {
  return resolvePublicOverlay(req.params.overlayToken, req.params.sceneToken || null);
}

function registerPublicOverlayRoutes(app) {
  const registerVariant = (basePath, fixed) => {
    app.post(`${basePath}/obs-bridge`, (req, res) => {
      noStore(res);
      const context = publicOverlayContext(req);
      if (!context || !context.overlay.enabled || (fixed && !context.fixedScene?.enabled)) {
        return res.status(404).json({ accepted: false, error: "Overlay unavailable." });
      }
      try {
        const result = overlayConnectorManager.reportBrowserBridge(context.overlay.id, req.body || {});
        return res.json({
          accepted: Boolean(result.accepted),
          enabled: Boolean(result.enabled),
          state: result.state || "disabled"
        });
      } catch (error) {
        return res.status(400).json({ accepted: false, error: error.message });
      }
    });

    app.get(`${basePath}/module-health`, async (req, res) => {
      noStore(res);
      const context = publicOverlayContext(req);
      if (!context) return res.status(404).json({ healthy: false, reason: "Overlay unavailable." });
      const state = buildPublicState(context.overlay.id, fixed ? context.fixedScene.id : null);
      const module = state.scene?.modules?.find((item) => item.id === req.query.module_id && item.renderType === "web");
      if (!module?.config?.url) return res.status(404).json({ healthy: false, reason: "Website source unavailable." });
      const cacheKey = `${context.overlay.id}:${module.id}`;
      const cached = externalHealthCache.get(cacheKey);
      if (cached && Date.now() - cached.at < 15000) return res.json(cached.result);
      const result = await probeExternalOverlay(module.config.url);
      externalHealthCache.set(cacheKey, { at: Date.now(), result });
      return res.status(result.healthy ? 200 : 502).json(result);
    });

    app.get(`${basePath}/state`, (req, res) => {
      noStore(res);
      const context = publicOverlayContext(req);
      if (!context) return res.status(404).json({ exists: false, enabled: false, scene: null });
      return res.json(buildPublicState(context.overlay.id, fixed ? context.fixedScene.id : null));
    });

    app.get(`${basePath}/events`, (req, res) => {
      const context = publicOverlayContext(req);
      if (!context) return res.status(404).end();
      return subscribeWebEvents(req, res, {
        scopes: [`overlay:${context.overlay.id}`],
        initialEvents: [{ event: "overlay:changed", payload: { revision: context.overlay.updated_at } }]
      });
    });

    app.get(basePath, (req, res) => {
      noStore(res);
      const context = publicOverlayContext(req);
      if (!context || !context.overlay.enabled || (fixed && !context.fixedScene.enabled)) {
        return res.status(404).send("Overlay unavailable.");
      }
      const statePath = `${req.path.replace(/\/$/, "")}/state`;
      const eventsPath = `${req.path.replace(/\/$/, "")}/events`;
      const healthPath = `${req.path.replace(/\/$/, "")}/module-health`;
      const bridgePath = `${req.path.replace(/\/$/, "")}/obs-bridge`;
      res.set("Content-Security-Policy", "default-src 'none'; img-src https: http: data:; frame-src https: http:; style-src 'self' 'unsafe-inline'; script-src 'self'; connect-src 'self';");
      return res.render("overlay-render", {
        statePath,
        eventsPath,
        healthPath,
        bridgePath,
        initialStateJson: JSON.stringify(buildPublicState(context.overlay.id, fixed ? context.fixedScene.id : null)).replace(/</g, "\\u003c")
      });
    });
  };

  registerVariant("/overlay/:overlayToken/scene/:sceneToken", true);
  registerVariant("/overlay/:overlayToken", false);
}

function requireOverlayAccess(capability = OVERLAY_CAPABILITIES.MANAGE) {
  return (req, res, next) => {
    if (!canAccessOverlay(req.session?.user, req.params.id, capability)) {
      if (req.path.startsWith("/api/")) return res.status(403).json({ error: "Access denied." });
      return res.status(403).render("error", { title: "Access denied", message: "You do not have access to that overlay." });
    }
    next();
  };
}

function requireSceneInOverlay(req, res, next) {
  const overlay = getOverlay(req.params.id);
  if (!overlay?.scenes.some((scene) => scene.id === req.params.sceneId)) {
    if (req.path.startsWith("/api/")) return res.status(404).json({ error: "Scene not found." });
    return res.status(404).render("error", { title: "Scene not found", message: "That scene is not part of this overlay." });
  }
  next();
}

function requireModuleInOverlay(req, res, next) {
  const overlay = getOverlay(req.params.id);
  if (!overlay?.scenes.some((scene) => scene.modules.some((module) => module.id === req.params.moduleId))) {
    if (req.path.startsWith("/api/")) return res.status(404).json({ error: "Source not found." });
    return res.status(404).render("error", { title: "Source not found", message: "That source is not part of this overlay." });
  }
  next();
}

function adminOnly(req, res, next) {
  if (!req.session?.user?.isAdmin) {
    if (req.path.startsWith("/api/")) return res.status(403).json({ error: "Access denied." });
    return res.status(403).render("error", { title: "Access denied", message: "Administrator access is required." });
  }
  next();
}

function flash(req, type, message) {
  req.session.flash = { type, message };
}

function redirectWithResult(req, res, pathValue, work, success) {
  try {
    const value = work();
    flash(req, "success", success);
    return res.redirect(pathValue);
  } catch (error) {
    flash(req, "error", error.message);
    return res.redirect(pathValue);
  }
}

function booleanField(body, name) {
  return body[name] === true || body[name] === "true" || body[name] === "on" || body[name] === "1";
}

function orderedIds(body) {
  if (Array.isArray(body.ids)) return body.ids;
  if (typeof body.ids === "string") {
    try {
      const parsed = JSON.parse(body.ids);
      if (Array.isArray(parsed)) return parsed;
    } catch {}
    return body.ids.split(",").map((id) => id.trim()).filter(Boolean);
  }
  return [];
}

function moduleInput(body) {
  return {
    name: body.name,
    type: body.type,
    enabled: booleanField(body, "enabled"),
    config: {
      text: body.text,
      url: body.url,
      x: body.x,
      y: body.y,
      width: body.width,
      height: body.height,
      opacity: body.opacity,
      fontSize: body.font_size,
      fontWeight: body.font_weight,
      color: body.color,
      background: body.background,
      align: body.align,
      padding: body.padding,
      fit: body.fit,
      playBehavior: body.play_behavior,
      muted: booleanField(body, "muted"),
      volume: body.volume,
      playbackRate: body.playback_rate,
      startAt: body.start_at,
      showControls: booleanField(body, "show_controls"),
      allowPointerEvents: booleanField(body, "allow_pointer_events"),
      anchor: body.anchor,
      horizontalAlign: body.horizontal_align,
      verticalAlign: body.vertical_align,
      overflow: body.text_overflow,
      autoRefresh: booleanField(body, "auto_refresh"),
      healthCheck: booleanField(body, "health_check"),
      refreshIntervalSeconds: body.refresh_interval_seconds,
      retryLimit: body.retry_limit,
      cropTop: body.crop_top,
      cropRight: body.crop_right,
      cropBottom: body.crop_bottom,
      cropLeft: body.crop_left,
      zoom: body.zoom,
      customCss: body.custom_css
    }
  };
}

function baseUrl(req) {
  return `${req.protocol}://${req.get("host")}`;
}

function registerOverlayAdminRoutes(app) {
  app.get("/admin/overlays", adminOnly, (req, res) => {
    noStore(res);
    res.render("admin-overlays", {
      title: "OBS overlays",
      overlays: listOverlays({ includeSecrets: true }),
      baseUrl: baseUrl(req)
    });
  });

  app.post("/admin/overlays", adminOnly, (req, res) => redirectWithResult(
    req,
    res,
    "/admin/overlays",
    () => createOverlay({ name: req.body.name, description: req.body.description, sceneName: req.body.scene_name || "Main" }),
    "Overlay created."
  ));

  app.post("/admin/overlays/reorder", adminOnly, (req, res) => redirectWithResult(req, res, "/admin/overlays", () => reorderOverlays(orderedIds(req.body)), "Overlay order saved."));

  app.get("/admin/overlays/:id", requireOverlayAccess(OVERLAY_CAPABILITIES.MANAGE), async (req, res) => {
    noStore(res);
    const canViewSecrets = canAccessOverlay(req.session.user, req.params.id, OVERLAY_CAPABILITIES.VIEW_SECRETS);
    const canManageObs = canAccessOverlay(req.session.user, req.params.id, OVERLAY_CAPABILITIES.MANAGE_OBS);
    const overlay = getOverlay(req.params.id, { includeSecrets: canViewSecrets });
    if (!overlay) return res.status(404).render("error", { title: "Overlay not found", message: "That overlay does not exist." });
    res.render("admin-overlay-detail", {
      title: overlay.name,
      overlay,
      canViewSecrets,
      canManageObs,
      baseUrl: baseUrl(req),
      moduleTypes: listOverlayModuleTypes(),
      editorStateJson: JSON.stringify({
        overlayId: overlay.id,
        canvas: { width: overlay.canvas_width || 1920, height: overlay.canvas_height || 1080 },
        activeSceneId: overlay.active_scene_id,
        scenes: overlay.scenes.map((scene) => ({
          id: scene.id,
          name: scene.name,
          enabled: scene.enabled,
          modules: scene.modules.map((module) => ({
            id: module.id,
            name: module.name,
            type: module.type,
            renderType: getOverlayModuleType(module.type)?.renderType || module.type,
            enabled: module.enabled,
            config: module.config
          }))
        }))
      }).replace(/</g, "\\u003c"),
      connectorProviders: canManageObs ? listOverlayConnectorProviders() : [],
      obsStatus: canManageObs
        ? await overlayConnectorManager.status(overlay.id, { includeScenes: true })
        : { state: "restricted", current_scene: null, error: null, scenes: [] }
    });
  });

  app.post("/admin/overlays/:id", requireOverlayAccess(), (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => updateOverlay(req.params.id, {
    name: req.body.name,
    description: req.body.description,
    enabled: booleanField(req.body, "enabled"),
    canvasWidth: req.body.canvas_width,
    canvasHeight: req.body.canvas_height
  }), "Overlay saved."));

  app.post("/admin/overlays/:id/duplicate", requireOverlayAccess(), (req, res) => redirectWithResult(req, res, "/admin/overlays", () => duplicateOverlay(req.params.id, req.body.name), "Overlay duplicated with new private URLs."));
  app.post("/admin/overlays/:id/delete", requireOverlayAccess(), (req, res) => redirectWithResult(req, res, "/admin/overlays", () => deleteOverlay(req.params.id), "Overlay deleted."));
  app.post("/admin/overlays/:id/token/revoke", requireOverlayAccess(OVERLAY_CAPABILITIES.VIEW_SECRETS), (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => regenerateOverlayToken(req.params.id), "All Browser Source URLs for this overlay were regenerated. The old URLs are revoked."));
  app.post("/admin/overlays/:id/active-scene", requireOverlayAccess(OVERLAY_CAPABILITIES.CONTROL_SCENE), (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => setActiveScene(req.params.id, req.body.scene_id, { source: "admin" }), "Active overlay scene changed."));

  app.post("/admin/overlays/:id/scenes", requireOverlayAccess(), (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => addScene(req.params.id, { name: req.body.name, obsSceneName: req.body.obs_scene_name }), "Scene created."));
  app.post("/admin/overlays/:id/scenes/reorder", requireOverlayAccess(), (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => reorderScenes(req.params.id, orderedIds(req.body)), "Scene order saved."));
  app.post("/admin/overlays/:id/scenes/:sceneId", requireOverlayAccess(), requireSceneInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => updateScene(req.params.sceneId, { name: req.body.name, enabled: booleanField(req.body, "enabled"), obsSceneName: req.body.obs_scene_name }), "Scene saved."));
  app.post("/admin/overlays/:id/scenes/:sceneId/duplicate", requireOverlayAccess(), requireSceneInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => duplicateScene(req.params.sceneId, req.body.name), "Scene duplicated with a new private URL."));
  app.post("/admin/overlays/:id/scenes/:sceneId/delete", requireOverlayAccess(), requireSceneInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => deleteScene(req.params.sceneId), "Scene deleted."));
  app.post("/admin/overlays/:id/scenes/:sceneId/token/revoke", requireOverlayAccess(OVERLAY_CAPABILITIES.VIEW_SECRETS), requireSceneInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => regenerateSceneToken(req.params.sceneId), "Fixed scene URL regenerated. The old URL is revoked."));

  app.post("/admin/overlays/:id/scenes/:sceneId/modules", requireOverlayAccess(), requireSceneInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => addModule(req.params.sceneId, moduleInput(req.body)), "Source added."));
  app.post("/admin/overlays/:id/scenes/:sceneId/modules/reorder", requireOverlayAccess(), requireSceneInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => reorderModules(req.params.sceneId, orderedIds(req.body)), "Layer order saved."));
  app.post("/admin/overlays/:id/modules/:moduleId", requireOverlayAccess(), requireModuleInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => updateModule(req.params.moduleId, moduleInput(req.body)), "Source saved."));
  app.post("/admin/overlays/:id/modules/:moduleId/duplicate", requireOverlayAccess(), requireModuleInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => duplicateModule(req.params.moduleId, req.body.name), "Source copied."));
  app.post("/admin/overlays/:id/modules/:moduleId/delete", requireOverlayAccess(), requireModuleInOverlay, (req, res) => redirectWithResult(req, res, `/admin/overlays/${req.params.id}`, () => deleteModule(req.params.moduleId), "Source deleted."));

  app.post("/api/admin/overlays/:id/modules/:moduleId/transform", requireOverlayAccess(), requireModuleInOverlay, (req, res) => {
    noStore(res);
    try {
      res.json({ ok: true, module: updateModuleTransform(req.params.moduleId, req.body || {}) });
    } catch (error) {
      res.status(400).json({ ok: false, error: error.message });
    }
  });

  app.post("/api/admin/overlays/:id/modules/:moduleId/refresh", requireOverlayAccess(), requireModuleInOverlay, (req, res) => {
    noStore(res);
    try {
      refreshModule(req.params.moduleId);
      res.json({ ok: true, message: "Source refresh requested." });
    } catch (error) {
      res.status(400).json({ ok: false, error: error.message });
    }
  });

  app.get("/api/admin/overlays/:id/modules/:moduleId/health", requireOverlayAccess(), requireModuleInOverlay, async (req, res) => {
    noStore(res);
    const overlay = getOverlay(req.params.id);
    const module = overlay?.scenes.flatMap((scene) => scene.modules).find((item) => item.id === req.params.moduleId);
    if (!module || module.type !== "web" || !module.config?.url) {
      return res.status(404).json({ ok: false, healthy: false, reason: "Website source unavailable." });
    }
    const result = await probeExternalOverlay(module.config.url);
    return res.json({ ok: true, ...result });
  });

  app.post("/admin/overlays/:id/obs", requireOverlayAccess(OVERLAY_CAPABILITIES.MANAGE_OBS), async (req, res) => {
    try {
      saveObsSettings(req.params.id, {
        enabled: booleanField(req.body, "enabled"),
        provider: req.body.provider,
        endpoint: req.body.endpoint,
        password: req.body.password,
        clearPassword: booleanField(req.body, "clear_password"),
        syncDirection: req.body.sync_direction,
        reconnect: booleanField(req.body, "reconnect")
      });
      await overlayConnectorManager.restart(req.params.id);
      flash(req, "success", "OBS connector settings saved.");
    } catch (error) {
      flash(req, "error", error.message);
    }
    res.redirect(`/admin/overlays/${req.params.id}`);
  });

  app.get("/api/admin/overlays/:id/obs/status", requireOverlayAccess(OVERLAY_CAPABILITIES.MANAGE_OBS), async (req, res) => {
    noStore(res);
    res.json({ ok: true, ...(await overlayConnectorManager.status(req.params.id, { includeScenes: true })) });
  });

  app.post("/api/admin/overlays/:id/obs/test", requireOverlayAccess(OVERLAY_CAPABILITIES.MANAGE_OBS), async (req, res) => {
    noStore(res);
    try {
      const existing = getObsSettings(req.params.id, { includeSecret: true });
      const result = await overlayConnectorManager.test({
        overlayId: req.params.id,
        provider: req.body.provider || existing.provider,
        endpoint: req.body.endpoint || existing.endpoint,
        password: req.body.password || existing.password
      });
      res.json(result);
    } catch (error) {
      res.status(400).json({ ok: false, error: error.message });
    }
  });

  app.post("/api/admin/overlays/:id/obs/scene", requireOverlayAccess(OVERLAY_CAPABILITIES.MANAGE_OBS), async (req, res) => {
    noStore(res);
    try {
      res.json({ ok: true, ...(await overlayConnectorManager.setObsScene(req.params.id, req.body.scene_name)) });
    } catch (error) {
      res.status(400).json({ ok: false, error: error.message });
    }
  });

  app.post("/api/admin/overlays/:id/obs/import", requireOverlayAccess(OVERLAY_CAPABILITIES.MANAGE_OBS), async (req, res) => {
    noStore(res);
    let syncSuppressed = false;
    try {
      const status = await overlayConnectorManager.status(req.params.id, { includeScenes: true });
      if (status.state !== "connected" || !status.scenes?.length) {
        throw new Error("Connect OBS with scene-reading permission before importing its setup.");
      }
      overlayConnectorManager.suppressSync(req.params.id, true);
      syncSuppressed = true;
      let overlay = getOverlay(req.params.id);
      let created = 0;
      let mapped = 0;
      for (const obsSceneName of status.scenes) {
        if (overlay.scenes.some((scene) => scene.obs_scene_name === obsSceneName)) continue;
        const sameName = overlay.scenes.find((scene) => !scene.obs_scene_name && scene.name.toLowerCase() === obsSceneName.toLowerCase());
        if (sameName) {
          updateScene(sameName.id, { name: sameName.name, enabled: sameName.enabled, obsSceneName });
          mapped += 1;
        } else {
          addScene(req.params.id, { name: obsSceneName, obsSceneName });
          created += 1;
        }
        overlay = getOverlay(req.params.id);
      }
      if (status.canvas_width && status.canvas_height) {
        updateOverlay(req.params.id, {
          name: overlay.name,
          description: overlay.description,
          enabled: overlay.enabled,
          canvasWidth: status.canvas_width,
          canvasHeight: status.canvas_height
        });
      }
      overlay = getOverlay(req.params.id);
      const current = overlay.scenes.find((scene) => scene.obs_scene_name === status.current_scene && scene.enabled);
      if (current && current.id !== overlay.active_scene_id) setActiveScene(req.params.id, current.id, { source: "obs" });
      return res.json({
        ok: true,
        created,
        mapped,
        canvas_updated: Boolean(status.canvas_width && status.canvas_height),
        message: `OBS setup applied: ${created} scene${created === 1 ? "" : "s"} added, ${mapped} existing scene${mapped === 1 ? "" : "s"} matched.`
      });
    } catch (error) {
      return res.status(400).json({ ok: false, error: error.message });
    } finally {
      if (syncSuppressed) overlayConnectorManager.suppressSync(req.params.id, false);
    }
  });
}

module.exports = {
  registerOverlayAdminRoutes,
  registerPublicOverlayRoutes
};