package utils

import (
	"encoding/json"
	"io/ioutil"
	"net/http"

	"fiskerinc.com/modules/common"
)

// LinkResult makes result with link and timestamp
func LinkResult(link string, timestamp int64) common.JSONLink {
	return common.JSONLink{
		Link:      link,
		Timestamp: timestamp,
	}
}

// ErrorResult makes error result
func ErrorResult(status int, message string) common.JSONError {
	return common.JSONError{
		Error:   http.StatusText(status),
		Message: message,
	}
}

// RespJSON sends back JSON response
func RespJSON(w http.ResponseWriter, status int, resp interface{}) {
	js, _ := json.Marshal(resp)
	w.Header().Set("Content-Type", "application/json")

	// CORS headers for local debugging
	/*
		w.Header().Set("Access-Control-Allow-Credentials", "true")
		w.Header().Set("Access-Control-Allow-Headers", "*")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		w.Header().Set("Access-Control-Allow-Methods", "*")
	*/

	w.WriteHeader(status)
	w.Write(js)
}

// RespLink JSON response with download link
func RespLink(w http.ResponseWriter, link string, timestamp int64) {
	resp := LinkResult(link, timestamp)
	RespJSON(w, http.StatusOK, &resp)
}

// RespError JSON error response
func RespError(w http.ResponseWriter, status int, message string) {
	resp := ErrorResult(status, message)
	RespJSON(w, status, &resp)
}

// Forward a response
func ForwardResponse(w http.ResponseWriter, resp *http.Response) {
	w.Header().Set("Content-Type", resp.Header.Get("Content-Type"))
	w.WriteHeader(resp.StatusCode)

	body, _ := ioutil.ReadAll(resp.Body)
	w.Write(body)
}