add some routes

routes/api/information/overview.go

@@ -0,0 +1,54 @@
+package information
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"bdgrp_go/routes"
+	"bdgrp_go/routes/upstream"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+func init() {
+	path := routes.PathOf()
+	routes.Register(func(app *fiber.App) {
+		app.Get(path, application)
+		fmt.Println("Loaded:", path)
+	})
+}
+
+func application(c *fiber.Ctx) error {
+	server := os.Getenv("SERVER")
+	cachePath := filepath.Join("resp", server, "overview.binpb")
+
+	headers := map[string]string{
+		"User-Agent":      c.Get("User-Agent"),
+		"Content-Type":    c.Get("Content-Type"),
+		"Accept":          c.Get("Accept"),
+		"Accept-Encoding": c.Get("Accept-Encoding"),
+		"x-clientversion": c.Get("x-clientversion"),
+	}
+
+	if server == "CN" {
+		headers["x-platformid"] = c.Get("x-platformid")
+		headers["x-deviceid"] = c.Get("x-deviceid")
+		headers["x-channelid"] = c.Get("x-channelid")
+		headers["x-clientplatform"] = c.Get("x-clientplatform")
+	}
+
+	url := fmt.Sprintf("%s/api/information/overview", upstream.BaseUrl())
+	data, err := upstream.Fetch(url, headers)
+	if err != nil {
+		// fallback 到 cache
+		data, err = os.ReadFile(cachePath)
+		if err != nil {
+			return c.Status(500).SendString("no cache available")
+		}
+	} else {
+		os.WriteFile(cachePath, data, 0644)
+	}
+
+	return c.Send(data)
+}