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)
}