Fix errors when some entries were missing when retrieving account information (#757)

* Handle null avatar

* Handle empty account

mastodon/src/main/java/org/joinmastodon/android/api/session/AccountSession.java

@@ -313,4 +313,10 @@ public class AccountSession{
 				.authority(getInstance().map(i -> i.normalizedUri).orElse(domain))
 				.build();
 	}
+
+	public String getDefaultAvatarUrl() {
+		return getInstance()
+				.map(instance->"https://"+domain+(instance.isAkkoma() ? "/images/avi.png" : "/avatars/original/missing.png"))
+				.orElse("");
+	}
 }

mastodon/src/main/java/org/joinmastodon/android/fragments/FollowRequestsListFragment.java

@@ -17,8 +17,10 @@ import android.widget.TextView;
 import org.joinmastodon.android.R;
 import org.joinmastodon.android.api.requests.accounts.GetAccountRelationships;
 import org.joinmastodon.android.api.requests.accounts.GetFollowRequests;
+import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.model.Account;
 import org.joinmastodon.android.model.HeaderPaginationList;
+import org.joinmastodon.android.model.Instance;
 import org.joinmastodon.android.model.Relationship;
 import org.joinmastodon.android.ui.OutlineProviders;
 import org.joinmastodon.android.ui.text.HtmlParser;
@@ -357,8 +359,9 @@ public class FollowRequestsListFragment extends MastodonRecyclerFragment<FollowR
 
 		public AccountWrapper(Account account){
 			this.account=account;
-			if(!TextUtils.isEmpty(account.avatar))
-				avaRequest=new UrlImageLoaderRequest(account.avatar, V.dp(50), V.dp(50));
+			avaRequest=new UrlImageLoaderRequest(
+					TextUtils.isEmpty(account.avatar) ? AccountSessionManager.get(getAccountID()).getDefaultAvatarUrl() : account.avatar,
+					V.dp(50), V.dp(50));
 			if(!TextUtils.isEmpty(account.header))
 				coverRequest=new UrlImageLoaderRequest(account.header, 1000, 1000);
 			parsedBio=HtmlParser.parse(account.note, account.emojis, Collections.emptyList(), Collections.emptyList(), accountID);

mastodon/src/main/java/org/joinmastodon/android/fragments/NotificationsListFragment.java

@@ -96,7 +96,7 @@ public class NotificationsListFragment extends BaseStatusListFragment<Notificati
 		if (n.type == Notification.Type.FOLLOW_REQUEST) {
 			ArrayList<StatusDisplayItem> items = new ArrayList<>();
 			items.add(titleItem);
-			items.add(new AccountCardStatusDisplayItem(n.id, this, n.account, n));
+			items.add(new AccountCardStatusDisplayItem(n.id, this, accountID, n.account, n));
 			return items;
 		}
 		if(n.status!=null){

mastodon/src/main/java/org/joinmastodon/android/fragments/ProfileFragment.java

@@ -601,7 +601,10 @@ public class ProfileFragment extends LoaderFragment implements OnBackPressedList
 	private void bindHeaderView(){
 		setTitle(account.displayName);
 		setSubtitle(getResources().getQuantityString(R.plurals.x_posts, (int)(account.statusesCount%1000), account.statusesCount));
-		ViewImageLoader.load(avatar, null, new UrlImageLoaderRequest(GlobalUserPreferences.playGifs ? account.avatar : account.avatarStatic, V.dp(100), V.dp(100)));
+		ViewImageLoader.load(avatar, null, new UrlImageLoaderRequest(
+				TextUtils.isEmpty(account.avatar) ? getSession().getDefaultAvatarUrl() :
+						GlobalUserPreferences.playGifs ? account.avatar : account.avatarStatic,
+				V.dp(100), V.dp(100)));
 		ViewImageLoader.load(cover, null, new UrlImageLoaderRequest(GlobalUserPreferences.playGifs ? account.header : account.headerStatic, 1000, 1000));
 		SpannableStringBuilder ssb=new SpannableStringBuilder(account.displayName);
 		if(AccountSessionManager.get(accountID).getLocalPreferences().customEmojiInNames)
@@ -1229,7 +1232,7 @@ public class ProfileFragment extends LoaderFragment implements OnBackPressedList
 			if(ava==null)
 				return;
 			int radius=V.dp(25);
-			currentPhotoViewer=new PhotoViewer(getActivity(), createFakeAttachments(account.avatar, ava), 0,
+			currentPhotoViewer=new PhotoViewer(getActivity(), createFakeAttachments(TextUtils.isEmpty(account.avatar) ? getSession().getDefaultAvatarUrl() : account.avatar, ava), 0,
 					new SingleImagePhotoViewerListener(avatar, avatarBorder, new int[]{radius, radius, radius, radius}, this, ()->currentPhotoViewer=null, ()->ava, null, null));
 		}
 	}

mastodon/src/main/java/org/joinmastodon/android/fragments/discover/DiscoverAccountsFragment.java

@@ -16,6 +16,7 @@ import android.widget.TextView;
 import org.joinmastodon.android.R;
 import org.joinmastodon.android.api.requests.accounts.GetAccountRelationships;
 import org.joinmastodon.android.api.requests.accounts.GetFollowSuggestions;
+import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.fragments.IsOnTop;
 import org.joinmastodon.android.fragments.MastodonRecyclerFragment;
 import org.joinmastodon.android.fragments.ProfileFragment;
@@ -319,8 +320,9 @@ public class DiscoverAccountsFragment extends MastodonRecyclerFragment<DiscoverA
 
 		public AccountWrapper(Account account){
 			this.account=account;
-			if(!TextUtils.isEmpty(account.avatar))
-				avaRequest=new UrlImageLoaderRequest(account.avatar, V.dp(50), V.dp(50));
+			avaRequest=new UrlImageLoaderRequest(
+					TextUtils.isEmpty(account.avatar) ? AccountSessionManager.getInstance().getAccount(accountID).getDefaultAvatarUrl() : account.avatar,
+					V.dp(50), V.dp(50));
 			if(!TextUtils.isEmpty(account.header))
 				coverRequest=new UrlImageLoaderRequest(account.header, 1000, 1000);
 			parsedBio=HtmlParser.parse(account.note, account.emojis, Collections.emptyList(), Collections.emptyList(), accountID);

mastodon/src/main/java/org/joinmastodon/android/model/Account.java

@@ -7,12 +7,17 @@ import androidx.annotation.Nullable;
 
 import org.joinmastodon.android.api.ObjectValidationException;
 import org.joinmastodon.android.api.RequiredField;
+import org.joinmastodon.android.api.requests.instance.GetInstance;
 import org.parceler.Parcel;
 
 import java.time.Instant;
 import java.time.LocalDate;
+import java.util.Collections;
 import java.util.List;
 
+import me.grishka.appkit.api.Callback;
+import me.grishka.appkit.api.ErrorResponse;
+
 /**
  * Represents a user of Mastodon and their associated profile.
  */
@@ -23,22 +28,22 @@ public class Account extends BaseModel implements Searchable{
 	/**
 	 * The account id
 	 */
-	@RequiredField
+//	@RequiredField
 	public String id;
 	/**
 	 * The username of the account, not including domain.
 	 */
-	@RequiredField
+//	@RequiredField
 	public String username;
 	/**
 	 * The Webfinger account URI. Equal to username for local users, or username@domain for remote users.
 	 */
-	@RequiredField
+//	@RequiredField
 	public String acct;
 	/**
 	 * The location of the user's profile page.
 	 */
-	@RequiredField
+//	@RequiredField
 	public String url;
 
 	// Display attributes
@@ -51,12 +56,12 @@ public class Account extends BaseModel implements Searchable{
 	/**
 	 * The profile's bio / description.
 	 */
-	@RequiredField
+//	@RequiredField
 	public String note;
 	/**
 	 * An image icon that is shown next to statuses and in the profile.
 	 */
-	@RequiredField
+//	@RequiredField
 	public String avatar;
 	/**
 	 * A static version of the avatar. Equal to avatar if its value is a static image; different if avatar is an animated GIF.
@@ -157,16 +162,26 @@ public class Account extends BaseModel implements Searchable{
 		if(fields!=null){
 			for(AccountField f:fields)
 				f.postprocess();
+		} else {
+			fields = Collections.emptyList();
 		}
 		if(emojis!=null){
 			for(Emoji e:emojis)
 				e.postprocess();
+		} else {
+			emojis = Collections.emptyList();
 		}
 		if(moved!=null)
 			moved.postprocess();
-		if(TextUtils.isEmpty(displayName))
-			displayName=username;
 		if(fqn == null) fqn = getFullyQualifiedName();
+		if(id == null) id = "";
+		if(username == null) username = "";
+		if(TextUtils.isEmpty(displayName))
+			displayName = !TextUtils.isEmpty(username) ? username : "";
+		if(acct == null) acct = "";
+		if(url == null) url = "";
+		if(note == null) note = "";
+		if(avatar == null) avatar = "";
 	}
 
 	public boolean isLocal(){
@@ -191,6 +206,8 @@ public class Account extends BaseModel implements Searchable{
 	}
 
 	public String getFullyQualifiedName() {
+		if (TextUtils.isEmpty(acct))
+			return "";
 		return fqn != null ? fqn : acct.split("@")[0] + "@" + getDomainFromURL();
 	}
 

mastodon/src/main/java/org/joinmastodon/android/model/viewmodel/AccountViewModel.java

@@ -1,8 +1,10 @@
 package org.joinmastodon.android.model.viewmodel;
 
 import android.text.SpannableStringBuilder;
+import android.text.TextUtils;
 
 import org.joinmastodon.android.GlobalUserPreferences;
+import org.joinmastodon.android.api.session.AccountSession;
 import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.model.Account;
 import org.joinmastodon.android.model.AccountField;
@@ -24,9 +26,13 @@ public class AccountViewModel{
 
 	public AccountViewModel(Account account, String accountID){
 		this.account=account;
-		avaRequest=new UrlImageLoaderRequest(GlobalUserPreferences.playGifs ? account.avatar : account.avatarStatic, V.dp(50), V.dp(50));
+		AccountSession session = AccountSessionManager.get(accountID);
+		avaRequest=new UrlImageLoaderRequest(
+				TextUtils.isEmpty(account.avatar) ? session.getDefaultAvatarUrl() :
+						GlobalUserPreferences.playGifs ? account.avatar : account.avatarStatic,
+				V.dp(50), V.dp(50));
 		emojiHelper=new CustomEmojiHelper();
-		if(AccountSessionManager.get(accountID).getLocalPreferences().customEmojiInNames)
+		if(session.getLocalPreferences().customEmojiInNames)
 			parsedName=HtmlParser.parseCustomEmoji(account.displayName, account.emojis);
 		else
 			parsedName=account.displayName;

mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/AccountCardStatusDisplayItem.java

@@ -15,6 +15,7 @@ import android.widget.TextView;
 import androidx.recyclerview.widget.RecyclerView;
 
 import org.joinmastodon.android.R;
+import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.fragments.BaseStatusListFragment;
 import org.joinmastodon.android.model.Account;
 import org.joinmastodon.android.model.Notification;
@@ -41,12 +42,13 @@ public class AccountCardStatusDisplayItem extends StatusDisplayItem{
 	public CustomEmojiHelper emojiHelper=new CustomEmojiHelper();
 	public CharSequence parsedName, parsedBio;
 
-	public AccountCardStatusDisplayItem(String parentID, BaseStatusListFragment parentFragment, Account account, Notification notification){
+	public AccountCardStatusDisplayItem(String parentID, BaseStatusListFragment parentFragment, String accountID, Account account, Notification notification){
 		super(parentID, parentFragment);
 		this.account=account;
 		this.notification=notification;
-		if(!TextUtils.isEmpty(account.avatar))
-			avaRequest=new UrlImageLoaderRequest(account.avatar, V.dp(50), V.dp(50));
+		avaRequest=new UrlImageLoaderRequest(
+				TextUtils.isEmpty(account.avatar) ? AccountSessionManager.get(accountID).getDefaultAvatarUrl() : account.avatar,
+				V.dp(50), V.dp(50));
 		if(!TextUtils.isEmpty(account.header))
 			coverRequest=new UrlImageLoaderRequest(account.header, 1000, 1000);
 		parsedBio=HtmlParser.parse(account.note, account.emojis, Collections.emptyList(), Collections.emptyList(), parentFragment.getAccountID());

mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/HeaderStatusDisplayItem.java

@@ -86,10 +86,14 @@ public class HeaderStatusDisplayItem extends StatusDisplayItem{
 
 	public HeaderStatusDisplayItem(String parentID, Account user, Instant createdAt, BaseStatusListFragment parentFragment, String accountID, Status status, CharSequence extraText, Notification notification, ScheduledStatus scheduledStatus){
 		super(parentID, parentFragment);
-		user=scheduledStatus != null ? AccountSessionManager.getInstance().getAccount(accountID).self : user;
+		AccountSession session = AccountSessionManager.get(accountID);
+		user=scheduledStatus != null ? session.self : user;
 		this.user=user;
 		this.createdAt=createdAt;
-		avaRequest=new UrlImageLoaderRequest(GlobalUserPreferences.playGifs ? user.avatar : user.avatarStatic, V.dp(50), V.dp(50));
+		avaRequest=new UrlImageLoaderRequest(
+				TextUtils.isEmpty(user.avatar) ? session.getDefaultAvatarUrl() :
+						GlobalUserPreferences.playGifs ? user.avatar : user.avatarStatic,
+				V.dp(50), V.dp(50));
 		this.accountID=accountID;
 		parsedName=new SpannableStringBuilder(user.displayName);
 		this.status=status;
@@ -430,6 +434,8 @@ public class HeaderStatusDisplayItem extends StatusDisplayItem{
 		}
 
 		private void onAvaClick(View v){
+			if (TextUtils.isEmpty(item.user.url))
+				return;
 			if (item.announcement != null) {
 				UiUtils.openURL(item.parentFragment.getActivity(), item.parentFragment.getAccountID(), item.user.url);
 				return;

mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/NotificationHeaderStatusDisplayItem.java

@@ -20,6 +20,8 @@ import android.widget.TextView;
 
 import org.joinmastodon.android.GlobalUserPreferences;
 import org.joinmastodon.android.R;
+import org.joinmastodon.android.api.session.AccountSession;
+import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.fragments.BaseStatusListFragment;
 import org.joinmastodon.android.fragments.ProfileFragment;
 import org.joinmastodon.android.model.Emoji;
@@ -53,7 +55,11 @@ public class NotificationHeaderStatusDisplayItem extends StatusDisplayItem{
 		if(notification.type==Notification.Type.POLL){
 			text=parentFragment.getString(R.string.poll_ended);
 		}else{
-			avaRequest=new UrlImageLoaderRequest(GlobalUserPreferences.playGifs ? notification.account.avatar : notification.account.avatarStatic, V.dp(50), V.dp(50));
+			AccountSession session = AccountSessionManager.get(accountID);
+			avaRequest=new UrlImageLoaderRequest(
+					TextUtils.isEmpty(notification.account.avatar) ? session.getDefaultAvatarUrl() :
+						GlobalUserPreferences.playGifs ? notification.account.avatar : notification.account.avatarStatic,
+					V.dp(50), V.dp(50));
 			SpannableStringBuilder parsedName=new SpannableStringBuilder(notification.account.displayName);
 			HtmlParser.parseCustomEmoji(parsedName, notification.account.emojis);
 			String str = parentFragment.getString(switch(notification.type){