79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
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package provider
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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)
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type Google struct {
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ClientId string
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ClientSecret string `json:"-"`
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Scope string
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Prompt string
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LoginURL *url.URL
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TokenURL *url.URL
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UserURL *url.URL
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}
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func (g *Google) GetLoginURL(redirectUri, state string) string {
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q := url.Values{}
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q.Set("client_id", g.ClientId)
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q.Set("response_type", "code")
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q.Set("scope", g.Scope)
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if g.Prompt != "" {
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q.Set("prompt", g.Prompt)
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}
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q.Set("redirect_uri", redirectUri)
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q.Set("state", state)
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var u url.URL
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u = *g.LoginURL
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u.RawQuery = q.Encode()
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return u.String()
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}
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func (g *Google) ExchangeCode(redirectUri, code string) (string, error) {
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form := url.Values{}
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form.Set("client_id", g.ClientId)
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form.Set("client_secret", g.ClientSecret)
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form.Set("grant_type", "authorization_code")
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form.Set("redirect_uri", redirectUri)
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form.Set("code", code)
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res, err := http.PostForm(g.TokenURL.String(), form)
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if err != nil {
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return "", err
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}
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var token Token
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defer res.Body.Close()
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err = json.NewDecoder(res.Body).Decode(&token)
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return token.Token, err
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}
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func (g *Google) GetUser(token string) (User, error) {
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var user User
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client := &http.Client{}
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req, err := http.NewRequest("GET", g.UserURL.String(), nil)
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if err != nil {
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return user, err
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}
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req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", token))
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res, err := client.Do(req)
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if err != nil {
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return user, err
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}
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defer res.Body.Close()
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err = json.NewDecoder(res.Body).Decode(&user)
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return user, err
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}
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