package service

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

	"git.kundeng.us/phoenix/textsender-models/tx0/token"

	"git.kundeng.us/phoenix/catapult/internal/app"
)

type Auth struct {
	Application *app.App
}

type service struct {
	Username   string `json:"username"`
	Passphrase string `json:"passphrase"`
}

type tokenResponse struct {
	Message string         `json:"message"`
	Data    []*token.Login `json:"data"`
}

func (a *Auth) GetToken() (*token.Login, error) {
	serv := service{
		Username:   a.Application.ServiceUsername,
		Passphrase: a.Application.ServicePassphrase,
	}

	jsonData, err := json.Marshal(serv)
	if err != nil {
		return nil, err
	}
	resp, err := http.Post(
		fmt.Sprintf("%s/api/v1/service/login", a.Application.AuthUrl),
		"application/json",
		bytes.NewBuffer(jsonData),
	)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	var r tokenResponse
	err = json.NewDecoder(resp.Body).Decode(&r)
	if err != nil {
		return nil, err
	}

	return r.Data[0], nil
}

type refreshTokenRequest struct {
	AccessToken string `json:"access_token"`
}

func (a *Auth) GetRefreshToken(tok *token.Login) (*token.Login, error) {
	req := refreshTokenRequest{AccessToken: tok.AccessToken}

	jsonData, err := json.Marshal(req)
	if err != nil {
		return nil, err
	}

	resp, err := http.Post(fmt.Sprintf("%s/api/v1/token/refresh", a.Application.AuthUrl), "application/json", bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	var r tokenResponse
	err = json.NewDecoder(resp.Body).Decode(&r)
	if err != nil {
		return nil, err
	} else {
		if len(r.Data) == 0 {
			return nil, nil
		} else {
			return r.Data[0], nil
		}
	}
}

func (s *Auth) TokenExpired(tok *token.Login) bool {
	now := time.Now()
	expiredTime := time.Unix(tok.ExpiresIn, 0)

	if now.After(expiredTime) {
		return true
	} else {
		return false
	}
}