package dynamics

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
	"time"

	"joylink.club/bj-rtsts-server/config"
)

func SendInitTrainReq(info *InitTrainInfo) (int, *[]byte, error) {
	if !config.Config.Dynamics.Open {
		return http.StatusOK, nil, nil
	}
	baseUrl := getUrlBase()
	uri := "/api/aerodynamics/init/train/"
	url := baseUrl + uri
	data, _ := json.Marshal(info)
	client := http.Client{
		Timeout: time.Second * 5,
	}
	resp, err := client.Post(url, "application/json", bytes.NewBuffer(data))
	if err != nil {
		s := err.Error()
		println(s)
		return 0, nil, err
	}
	var buf []byte
	_, err = resp.Body.Read(buf)
	if err != nil {
		return resp.StatusCode, nil, err
	}
	return resp.StatusCode, &buf, resp.Body.Close()
}

func SendRemoveTrainReq(info *InitTrainInfo) (int, *[]byte, error) {
	if !config.Config.Dynamics.Open {
		return http.StatusOK, nil, nil
	}
	baseUrl := getUrlBase()
	uri := "/api/aerodynamics/remove/train/"
	url := baseUrl + uri
	data, _ := json.Marshal(info)
	client := http.Client{
		Timeout: time.Second * 5,
	}
	resp, err := client.Post(url, "application/json", bytes.NewBuffer(data))
	if err != nil {
		s := err.Error()
		println(s)
		return 0, nil, err
	}
	var buf []byte
	_, err = resp.Body.Read(buf)
	if err != nil {
		return resp.StatusCode, nil, err
	}
	return resp.StatusCode, &buf, resp.Body.Close()
}

func SendSimulationStartReq(base *LineBaseInfo) (int, *[]byte, error) {
	if !config.Config.Dynamics.Open {
		return http.StatusOK, nil, nil
	}
	baseUrl := getUrlBase()
	uri := "/api/start/"
	url := baseUrl + uri
	data, _ := json.Marshal(base)
	resp, err := http.Post(url, "application/json", bytes.NewBuffer(data))
	if err != nil {
		s := err.Error()
		println(s)
		return 0, nil, err
	}
	var buf []byte
	_, err = resp.Body.Read(buf)
	if err != nil {
		return resp.StatusCode, nil, err
	}
	return resp.StatusCode, &buf, resp.Body.Close()
}

func SendSimulationEndReq() (int, *[]byte, error) {
	if !config.Config.Dynamics.Open {
		return http.StatusOK, nil, nil
	}
	baseUrl := getUrlBase()
	uri := "/api/end/"
	url := baseUrl + uri
	resp, err := http.Post(url, "application/json", nil)
	if err != nil {
		s := err.Error()
		println(s)
		return 0, nil, err
	}
	var buf []byte
	_, err = resp.Body.Read(buf)
	if err != nil {
		return resp.StatusCode, nil, err
	}
	return resp.StatusCode, &buf, resp.Body.Close()
}

var (
	urlBase string
)

func getUrlBase() string {
	if urlBase == "" {
		ip := config.Config.Dynamics.Ip
		var port string
		if config.Config.Dynamics.HttpPort != 0 {
			port = fmt.Sprintf(":%d", config.Config.Dynamics.HttpPort)
		}
		urlBase = "http://" + ip + port
	}
	return urlBase
}