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gtask/remote/GTaskClient.java注释

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何思源 4 months ago
parent 2918039e67
commit fdcaeb777d
1 changed files with 63 additions and 47 deletions
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app/src/main/java/net/micode/notes/gtask/remote/GTaskClient.java
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@ -61,35 +61,30 @@ import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;
// GTask客户端类，负责与Google Tasks服务通信
public class GTaskClient {
private static final String TAG = GTaskClient.class.getSimpleName();
// GTask服务的基本URL
private static final String GTASK_URL = "https://mail.google.com/tasks/";
private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";
// 单例实例
private static GTaskClient mInstance = null;
// HTTP客户端和请求相关变量
private DefaultHttpClient mHttpClient;
private String mGetUrl;
private String mPostUrl;
private long mClientVersion;
private boolean mLoggedin;
private long mLastLoginTime;
private int mActionId;
private Account mAccount;
private JSONArray mUpdateArray;
// 私有构造方法，实现单例模式
private GTaskClient() {
mHttpClient = null;
mGetUrl = GTASK_GET_URL;
@ -102,6 +97,7 @@ public class GTaskClient {
mUpdateArray = null;
}
// 获取单例实例的方法
public static synchronized GTaskClient getInstance() {
if (mInstance == null) {
mInstance = new GTaskClient();
@ -109,18 +105,17 @@ public class GTaskClient {
return mInstance;
}
// 登录Google账户并获取GTask访问权限
public boolean login(Activity activity) {
// we suppose that the cookie would expire after 5 minutes
// then we need to re-login
// 设定登录有效期为5分钟
final long interval = 1000 * 60 * 5;
if (mLastLoginTime + interval < System.currentTimeMillis()) {
mLoggedin = false;
}
// need to re-login after account switch
if (mLoggedin
&& !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
.getSyncAccountName(activity))) {
// 账户切换后需要重新登录
if (mLoggedin && !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
.getSyncAccountName(activity))) {
mLoggedin = false;
}
@ -136,7 +131,7 @@ public class GTaskClient {
return false;
}
// login with custom domain if necessary
// 处理自定义域名账户
if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()
.endsWith("googlemail.com"))) {
StringBuilder url = new StringBuilder(GTASK_URL).append("a/");
@ -151,7 +146,7 @@ public class GTaskClient {
}
}
// try to login with google official url
// 尝试使用Google官方URL登录
if (!mLoggedin) {
mGetUrl = GTASK_GET_URL;
mPostUrl = GTASK_POST_URL;
@ -164,6 +159,7 @@ public class GTaskClient {
return true;
}
// 登录Google账户获取认证令牌
private String loginGoogleAccount(Activity activity, boolean invalidateToken) {
String authToken;
AccountManager accountManager = AccountManager.get(activity);
@ -174,6 +170,7 @@ public class GTaskClient {
return null;
}
// 获取设置中的同步账户
String accountName = NotesPreferenceActivity.getSyncAccountName(activity);
Account account = null;
for (Account a : accounts) {
@ -189,7 +186,7 @@ public class GTaskClient {
return null;
}
// get the token now
// 获取认证令牌
AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account,
"goanna_mobile", null, activity, null, null);
try {
@ -207,10 +204,10 @@ public class GTaskClient {
return authToken;
}
// 尝试登录GTask服务
private boolean tryToLoginGtask(Activity activity, String authToken) {
if (!loginGtask(authToken)) {
// maybe the auth token is out of date, now let's invalidate the
// token and try again
// 令牌可能过期，失效令牌后重试
authToken = loginGoogleAccount(activity, true);
if (authToken == null) {
Log.e(TAG, "login google account failed");
@ -225,6 +222,7 @@ public class GTaskClient {
return true;
}
// 使用认证令牌登录GTask
private boolean loginGtask(String authToken) {
int timeoutConnection = 10000;
int timeoutSocket = 15000;
@ -236,14 +234,14 @@ public class GTaskClient {
mHttpClient.setCookieStore(localBasicCookieStore);
HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);
// login gtask
try {
// 构造登录URL
String loginUrl = mGetUrl + "?auth=" + authToken;
HttpGet httpGet = new HttpGet(loginUrl);
HttpResponse response = null;
response = mHttpClient.execute(httpGet);
// get the cookie now
// 检查是否获取到认证Cookie
List<Cookie> cookies = mHttpClient.getCookieStore().getCookies();
boolean hasAuthCookie = false;
for (Cookie cookie : cookies) {
@ -255,7 +253,7 @@ public class GTaskClient {
Log.w(TAG, "it seems that there is no auth cookie");
}
// get the client version
// 解析响应获取客户端版本
String resString = getResponseContent(response.getEntity());
String jsBegin = "_setup(";
String jsEnd = ")}</script>";
@ -272,7 +270,6 @@ public class GTaskClient {
e.printStackTrace();
return false;
} catch (Exception e) {
// simply catch all exceptions
Log.e(TAG, "httpget gtask_url failed");
return false;
}
@ -280,10 +277,12 @@ public class GTaskClient {
return true;
}
// 生成下一个操作ID
private int getActionId() {
return mActionId++;
}
// 创建HTTP POST请求
private HttpPost createHttpPost() {
HttpPost httpPost = new HttpPost(mPostUrl);
httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
@ -291,6 +290,7 @@ public class GTaskClient {
return httpPost;
}
// 从HTTP响应中获取内容
private String getResponseContent(HttpEntity entity) throws IOException {
String contentEncoding = null;
if (entity.getContentEncoding() != null) {
@ -298,6 +298,7 @@ public class GTaskClient {
Log.d(TAG, "encoding: " + contentEncoding);
}
// 处理压缩的响应内容
InputStream input = entity.getContent();
if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {
input = new GZIPInputStream(entity.getContent());
@ -311,6 +312,7 @@ public class GTaskClient {
BufferedReader br = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
// 读取响应内容
while (true) {
String buff = br.readLine();
if (buff == null) {
@ -323,6 +325,7 @@ public class GTaskClient {
}
}
// 发送POST请求并获取JSON响应
private JSONObject postRequest(JSONObject js) throws NetworkFailureException {
if (!mLoggedin) {
Log.e(TAG, "please login first");
@ -331,12 +334,13 @@ public class GTaskClient {
HttpPost httpPost = createHttpPost();
try {
// 构造请求参数
LinkedList<BasicNameValuePair> list = new LinkedList<BasicNameValuePair>();
list.add(new BasicNameValuePair("r", js.toString()));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");
httpPost.setEntity(entity);
// execute the post
// 执行POST请求并处理响应
HttpResponse response = mHttpClient.execute(httpPost);
String jsString = getResponseContent(response.getEntity());
return new JSONObject(jsString);
@ -360,20 +364,21 @@ public class GTaskClient {
}
}
// 创建新任务并发送到GTask服务
public void createTask(Task task) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
// action_list
// 添加创建任务的操作到动作列表
actionList.put(task.getCreateAction(getActionId()));
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
// 设置客户端版本
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
// post
// 发送请求并处理响应
JSONObject jsResponse = postRequest(jsPost);
JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
@ -386,20 +391,21 @@ public class GTaskClient {
}
}
// 创建新任务列表并发送到GTask服务
public void createTaskList(TaskList tasklist) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
// action_list
// 添加创建任务列表的操作到动作列表
actionList.put(tasklist.getCreateAction(getActionId()));
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client version
// 设置客户端版本
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
// post
// 发送请求并处理响应
JSONObject jsResponse = postRequest(jsPost);
JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
@ -412,15 +418,16 @@ public class GTaskClient {
}
}
// 提交更新操作到GTask服务
public void commitUpdate() throws NetworkFailureException {
if (mUpdateArray != null) {
try {
JSONObject jsPost = new JSONObject();
// action_list
// 添加更新操作列表
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
// client_version
// 设置客户端版本
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
postRequest(jsPost);
@ -433,10 +440,10 @@ public class GTaskClient {
}
}
// 添加更新节点到更新队列
public void addUpdateNode(Node node) throws NetworkFailureException {
if (node != null) {
// too many update items may result in an error
// set max to 10 items
// 限制更新队列大小为10个项目
if (mUpdateArray != null && mUpdateArray.length() > 10) {
commitUpdate();
}
@ -447,6 +454,7 @@ public class GTaskClient {
}
}
// 移动任务到不同的任务列表
public void moveTask(Task task, TaskList preParent, TaskList curParent)
throws NetworkFailureException {
commitUpdate();
@ -455,26 +463,28 @@ public class GTaskClient {
JSONArray actionList = new JSONArray();
JSONObject action = new JSONObject();
// action_list
// 构造移动任务的操作
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
// 根据情况设置前一个兄弟任务ID
if (preParent == curParent && task.getPriorSibling() != null) {
// put prioring_sibing_id only if moving within the tasklist and
// it is not the first one
action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
}
// 设置源列表和目标列表
action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());
action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());
if (preParent != curParent) {
// put the dest_list only if moving between tasklists
action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());
}
actionList.put(action);
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
// 设置客户端版本
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
postRequest(jsPost);
@ -486,18 +496,19 @@ public class GTaskClient {
}
}
// 删除节点（任务或任务列表）
public void deleteNode(Node node) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
// action_list
// 标记节点为已删除并添加到操作列表
node.setDeleted(true);
actionList.put(node.getUpdateAction(getActionId()));
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
// 设置客户端版本
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
postRequest(jsPost);
@ -509,6 +520,7 @@ public class GTaskClient {
}
}
// 获取所有任务列表
public JSONArray getTaskLists() throws NetworkFailureException {
if (!mLoggedin) {
Log.e(TAG, "please login first");
@ -516,11 +528,12 @@ public class GTaskClient {
}
try {
// 发送GET请求获取任务列表
HttpGet httpGet = new HttpGet(mGetUrl);
HttpResponse response = null;
response = mHttpClient.execute(httpGet);
// get the task list
// 解析响应获取任务列表数据
String resString = getResponseContent(response.getEntity());
String jsBegin = "_setup(";
String jsEnd = ")}</script>";
@ -547,6 +560,7 @@ public class GTaskClient {
}
}
// 获取指定任务列表中的所有任务
public JSONArray getTaskList(String listGid) throws NetworkFailureException {
commitUpdate();
try {
@ -554,7 +568,7 @@ public class GTaskClient {
JSONArray actionList = new JSONArray();
JSONObject action = new JSONObject();
// action_list
// 构造获取任务列表的操作
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
@ -563,7 +577,7 @@ public class GTaskClient {
actionList.put(action);
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
// 设置客户端版本
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
JSONObject jsResponse = postRequest(jsPost);
@ -575,11 +589,13 @@ public class GTaskClient {
}
}
// 获取当前同步账户
public Account getSyncAccount() {
return mAccount;
}
// 重置更新数组
public void resetUpdateArray() {
mUpdateArray = null;
}
}
}
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