onedrive.php

<?php
	class onedrive{
		static $client_id;
		static $client_secret;
		static $redirect_uri;
		static $dir_cache_time;
		static $file_cache_time;
		static $app_url;

		static function authorize_url(){
			$client_id = self::$client_id;
			$redirect_uri = self::$redirect_uri;
			$url ="https://login.microsoftonline.com/common/oauth2/authorize?response_type=code&client_id={$client_id}&redirect_uri={$redirect_uri}";
			$url .= '&state='.urlencode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
			return $url;
		}
		
		static function authorize($code = "", $resource_id="https://api.office.com/discovery/"){
			$client_id = self::$client_id;
			$client_secret = self::$client_secret;
			$redirect_uri = self::$redirect_uri;

			$url = "https://login.microsoftonline.com/common/oauth2/token";
			$post_data = "client_id={$client_id}&redirect_uri={$redirect_uri}&client_secret={$client_secret}&code={$code}&grant_type=authorization_code&resource={$resource_id}";
			fetch::$headers = "Content-Type: application/x-www-form-urlencoded";
			$resp = fetch::post($url, $post_data);
			$data = json_decode($resp->content, true);
			return $data;
		}

		static function get_app_url($token){
			fetch::$headers = "Authorization: bearer {$token}";

			$resp = fetch::get("https://api.office.com/discovery/v2.0/me/services");

			$data = json_decode($resp->content, true);
			if(!empty($data['value'])){
				return $data['value'][0]['serviceResourceId'];
			}
			return ;
		}

		static function access_token(){
			$token = config('@token');
			if($token['expires_on'] > time()+600){
				return $token['access_token'];
			}else{
				$refresh_token = config('refresh_token');
				$token = self::get_token($refresh_token);
				if(!empty($token['refresh_token'])){
					config('@token', $token);
					return $token['access_token'];
				}
			}
			return "";
		}
		
		static function get_token($refresh_token){
			$client_id = self::$client_id;
			$client_secret = self::$client_secret;
			$redirect_uri = self::$redirect_uri;
			$resource_id = self::$app_url;
			$url = "https://login.microsoftonline.com/common/oauth2/token";
			$post_data = "client_id={$client_id}&redirect_uri={$redirect_uri}&client_secret={$client_secret}&refresh_token={$refresh_token}&grant_type=refresh_token&resource={$resource_id}";
			fetch::$headers = "Content-Type: application/x-www-form-urlencoded";
			$resp = fetch::post($url, $post_data);
			$data = json_decode($resp->content, true);
			return $data;
		}

		static function dir($path="/"){
			$key = 'dir'.$path;
			$data = cache($key);
			if(!empty($data)){
				return $data;
			}
			$token = self::access_token();
			fetch::$headers = "Authorization: bearer {$token}";
			//$path = ($path=='/')?$path:str_replace("/",":/",$path);
			if($path != '/'){
				$path = ':'.rtrim($path, '/').':/';
			}
			$url = self::$app_url."_api/v2.0/me/drive/root".$path."children";
			$resp = fetch::get($url);
			$data = json_decode($resp->content, true);
			if(!empty($data)){
				cache($key, $data, self::$dir_cache_time);
			}
			return $data;
		}

		static function file2($path){
			$token = self::access_token();
			fetch::$headers = "Authorization: bearer {$token}";
			$url = self::$app_url."_api/v2.0/me/drive/root:/".$path.':/content';
			echo $url;
			$resp = fetch::get($url);
			return $resp['redirect_url'];
		}

		static function file($path){
			$key = 'file'.$path;
			$data = cache($key);
			if(!empty($data)){
				return $data;
			}
			$token = self::access_token();
			fetch::$headers = "Authorization: bearer {$token}";
			$url = self::$app_url."_api/v2.0/me/drive/root:/".$path;
			$resp = fetch::get($url);
			$data = json_decode($resp->content, true);
			if(!empty($data)){
				cache($key, $data, self::$file_cache_time);
			}
			return $data;
		}
	}