package message

import (
	"bytes"
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"net/http"
)

func (c *Client) Update(ctx context.Context, reqData *UpdateCardRequest) error {

	token, err := c.auth.AccessToken(ctx)
	if err != nil {
		return err
	}

	url := fmt.Sprintf(
		"https://qyapi.weixin.qq.com/cgi-bin/message/update_template_card?access_token=%s",
		token,
	)

	body, err := json.Marshal(reqData)
	if err != nil {
		return err
	}

	req, err := http.NewRequestWithContext(
		ctx,
		http.MethodPost,
		url,
		bytes.NewBuffer(body),
	)
	if err != nil {
		return err
	}

	req.Header.Set("Content-Type", "application/json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	var result Response

	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		return err
	}

	if result.ErrCode != 0 {
		return errors.New(result.ErrMsg)
	}

	return nil
}