界面美化

web_server/src/Web_Server.cpp

@@ -5,6 +5,7 @@
 #include <drogon/drogon.h>
 #include <nlohmann/json.hpp>
 #include <algorithm>
+#include <cmath>
 #include <functional>
 #include <memory>
 #include <string>
@@ -122,6 +123,43 @@ int run_web_server(std::uint16_t port, const std::filesystem::path& asset_root)
         });
     }, {drogon::Put});
 
+    app.registerHandler("/plot/{1}/data/generate", [plots](
+        const drogon::HttpRequestPtr& request,
+        std::function<void(const drogon::HttpResponsePtr&)>&& callback,
+        std::string plot_id) {
+        auto plot = find_plot(*plots, plot_id);
+        if (!plot) {
+            callback(error_response(drogon::k404NotFound, "unknown plot"));
+            return;
+        }
+        nlohmann::json input;
+        try {
+            input = nlohmann::json::parse(request->body());
+        } catch (const nlohmann::json::exception&) {
+            callback(error_response(drogon::k400BadRequest, "invalid data generation request"));
+            return;
+        }
+        if (!input.contains("count") || !input["count"].is_number_unsigned()
+            || !input.contains("minimum") || !input["minimum"].is_number()
+            || !input.contains("maximum") || !input["maximum"].is_number()) {
+            callback(error_response(drogon::k400BadRequest, "count, minimum and maximum are required"));
+            return;
+        }
+        const auto count = input["count"].get<std::size_t>();
+        const auto minimum = input["minimum"].get<double>();
+        const auto maximum = input["maximum"].get<double>();
+        if (count == 0 || count > 1'000'000 || !std::isfinite(minimum)
+            || !std::isfinite(maximum) || minimum >= maximum) {
+            callback(error_response(drogon::k400BadRequest, "invalid count or range"));
+            return;
+        }
+        auto output = std::make_shared<std::function<void(const drogon::HttpResponsePtr&)>>(
+            std::move(callback));
+        plot->async_generate_data(count, minimum, maximum, [output](nlohmann::json result) {
+            (*output)(json_response(std::move(result)));
+        });
+    }, {drogon::Post});
+
     app.registerController(websocket)
         .setDocumentRoot(asset_root.string())
         .setHomePage("index.html")