package twitter

import (
	"encoding/json"
	"fmt"
	"net/http"
)

type User struct {
	ID       string
	Name     string
	Username string
}

func NewAPIClient(httpclient *http.Client) *APIClient {
	return &APIClient{httpclient}
}

type APIClient struct {
	*http.Client
}

func (c *APIClient) GetMe() (*User, error) {
	type oauthResponse struct {
		Data struct {
			ID       string `json:"id"`
			Name     string `json:"name"`
			Username string `json:"username"`
		} `json:"data"`
	}

	resp, err := c.Get("https://api.twitter.com/2/users/me")
	if err != nil {
		return nil, fmt.Errorf("error fetching resource: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("error fetching resource: status code %d", resp.StatusCode)
	}

	var oauthResp oauthResponse
	if err = json.NewDecoder(resp.Body).Decode(&oauthResp); err != nil {
		return nil, fmt.Errorf("error decoding resource: %v", err)
	}

	return &User{
		ID:       oauthResp.Data.ID,
		Name:     oauthResp.Data.Name,
		Username: oauthResp.Data.Username,
	}, nil
}