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/*
macli - Unofficial CLI-Based MyAnimeList Client
Copyright © 2022 Vidhu Kant Sharma <vidhukant@vidhukant.xyz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package auth
import (
"net/http"
"net/url"
"encoding/json"
"os"
"fmt"
// "io/ioutil"
)
func listen(clientId, verifier string) {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
query := r.URL.Query()
code, codePresent := query["code"]
if !codePresent {
// TODO: check if error message present
fmt.Println("Error: response from MyAnimeList doesn't contain required code.")
os.Exit(1)
}
accessToken, refreshToken, expiresIn := requestToken(clientId, verifier, code[0])
if accessToken != "" {
w.WriteHeader(200)
w.Write([]byte("<h1>You have successfully logged into macli.</h1>"))
}
setToken(accessToken)
setRefreshToken(refreshToken)
setExpiresIn(expiresIn)
})
err := http.ListenAndServe(":8000", nil)
if err != nil {
fmt.Println("There was an error initialising the server", err.Error())
os.Exit(1)
}
}
func requestToken(clientId, verifier, code string) (string, string, string) {
data := url.Values{
"client_id": {clientId},
"code_verifier": {verifier},
"grant_type": {"authorization_code"},
"code": {code},
}
resp, err := http.PostForm("https://myanimelist.net/v1/oauth2/token", data)
if err != nil {
fmt.Println("Error while requesting an access token:", err)
os.Exit(1)
}
var res map[string]interface{}
json.NewDecoder(resp.Body).Decode(&res)
return fmt.Sprintf("%v", res["access_token"]), fmt.Sprintf("%v", res["refresh_token"]), fmt.Sprintf("%v", res["expires_in"])
}
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