package okapi

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"
)

type Request struct {
	AppKey     string
	ApiName    string
	ApiVersion string
	Body       RequestBody
}

type RequestBody struct {
	OaSessionID   string                 `json:"oa-session-id,omitempty"`
	OaAppMarketID string                 `json:"oa-app-market-id,omitempty"`
	OaAppVersion  string                 `json:"oa-app-version,omitempty"`
	OaDeviceID    string                 `json:"oa-device-id,omitempty"`
	OaSign        string                 `json:"oa-sign,omitempty"`
	Timestamp     string                 `json:"timestamp,omitempty"`
	Params        map[string]interface{} `json:"params,omitempty"`
}

func (req *Request) Decode(r *http.Request) error {
	reqBody, err := io.ReadAll(r.Body)
	if err != nil {
		return err
	}
	// Restore the io.ReadCloser to its original state
	r.Body = io.NopCloser(bytes.NewBuffer(reqBody))
	if err = r.ParseForm(); err != nil {
		return err
	}

	req.AppKey = r.Form.Get("appkey")
	req.ApiName = r.Form.Get("api")
	req.ApiVersion = r.Form.Get("version")
	err = json.Unmarshal(reqBody, &req.Body)
	if err != nil {
		return err
	}

	return nil
}