package provider

import (
	"context"
	"net/http"
	"time"

	json "github.com/json-iterator/go"
	"golang.org/x/oauth2"
	"golang.org/x/oauth2/github"
)

type GithubProvider struct{}

func (p GithubProvider) Provider() OAuth2Provider {
	return "github"
}

func (p GithubProvider) NewConfig(ClientID, ClientSecret string) *oauth2.Config {
	return &oauth2.Config{
		ClientID:     ClientID,
		ClientSecret: ClientSecret,
		Scopes:       []string{"user"},
		Endpoint:     github.Endpoint,
	}
}

func (p GithubProvider) GetUserInfo(ctx context.Context, config *oauth2.Config, code string) (*UserInfo, error) {
	oauth2Token, err := config.Exchange(ctx, code)
	if err != nil {
		return nil, err
	}
	client := config.Client(ctx, oauth2Token)
	req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://api.github.com/user", nil)
	if err != nil {
		return nil, err
	}
	resp, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	ui := githubUserInfo{}
	err = json.NewDecoder(resp.Body).Decode(&ui)
	if err != nil {
		return nil, err
	}
	return &UserInfo{
		Username:       ui.Login,
		ProviderUserID: ui.ID,
	}, nil
}

func init() {
	RegisterProvider(GithubProvider{})
}

type githubUserInfo struct {
	Login                   string      `json:"login"`
	ID                      uint        `json:"id"`
	NodeID                  string      `json:"node_id"`
	AvatarURL               string      `json:"avatar_url"`
	GravatarID              string      `json:"gravatar_id"`
	URL                     string      `json:"url"`
	HTMLURL                 string      `json:"html_url"`
	FollowersURL            string      `json:"followers_url"`
	FollowingURL            string      `json:"following_url"`
	GistsURL                string      `json:"gists_url"`
	StarredURL              string      `json:"starred_url"`
	SubscriptionsURL        string      `json:"subscriptions_url"`
	OrganizationsURL        string      `json:"organizations_url"`
	ReposURL                string      `json:"repos_url"`
	EventsURL               string      `json:"events_url"`
	ReceivedEventsURL       string      `json:"received_events_url"`
	Type                    string      `json:"type"`
	SiteAdmin               bool        `json:"site_admin"`
	Name                    string      `json:"name"`
	Company                 interface{} `json:"company"`
	Blog                    string      `json:"blog"`
	Location                string      `json:"location"`
	Email                   interface{} `json:"email"`
	Hireable                interface{} `json:"hireable"`
	Bio                     string      `json:"bio"`
	TwitterUsername         interface{} `json:"twitter_username"`
	PublicRepos             int         `json:"public_repos"`
	PublicGists             int         `json:"public_gists"`
	Followers               int         `json:"followers"`
	Following               int         `json:"following"`
	CreatedAt               time.Time   `json:"created_at"`
	UpdatedAt               time.Time   `json:"updated_at"`
	PrivateGists            int         `json:"private_gists"`
	TotalPrivateRepos       int         `json:"total_private_repos"`
	OwnedPrivateRepos       int         `json:"owned_private_repos"`
	DiskUsage               int         `json:"disk_usage"`
	Collaborators           int         `json:"collaborators"`
	TwoFactorAuthentication bool        `json:"two_factor_authentication"`
	Plan                    Plan        `json:"plan"`
}
type Plan struct {
	Name          string `json:"name"`
	Space         int    `json:"space"`
	Collaborators int    `json:"collaborators"`
	PrivateRepos  int    `json:"private_repos"`
}