Convert Mailbox syncInterval column to boolean.

We are no longer doing per-mailbox sync intervals; instead,
mailboxes opt in to syncing, and the account sync interval
controls what happens.

Change-Id: I8ae32ea25079abbb63bb6a6a282bf5c06de73fca

emailcommon/src/com/android/emailcommon/provider/Mailbox.java

@@ -17,6 +17,7 @@
 
 package com.android.emailcommon.provider;
 
+import android.content.ContentResolver;
 import android.content.ContentUris;
 import android.content.ContentValues;
 import android.content.Context;
@@ -128,7 +129,9 @@ public class Mailbox extends EmailContent implements MailboxColumns, Parcelable
     public static final long NO_MAILBOX = -1;
 
     // Sentinel values for the mSyncInterval field of both Mailbox records
+    @Deprecated
     public static final int CHECK_INTERVAL_NEVER = -1;
+    @Deprecated
     public static final int CHECK_INTERVAL_PUSH = -2;
     // The following two sentinel values are used by EAS
     // Ping indicates that the EAS mailbox is synced based on a "ping" from the server
@@ -151,6 +154,15 @@ public class Mailbox extends EmailContent implements MailboxColumns, Parcelable
         MailboxColumns.TYPE + "<" + Mailbox.TYPE_NOT_EMAIL +
         " AND " + MailboxColumns.FLAG_VISIBLE + "=1";
 
+    /** Selection for all mailboxes that explicitly say they want to sync for an account. */
+    private static final String SYNCING_AND_ACCOUNT_SELECTION =
+            MailboxColumns.SYNC_INTERVAL + "=1 and " + MailboxColumns.ACCOUNT_KEY + "=?";
+
+    /** Selection for mailboxes that say they want to sync, plus outbox, for an account. */
+    private static final String OUTBOX_PLUS_SYNCING_AND_ACCOUNT_SELECTION = "("
+            + MailboxColumns.TYPE + "=" + Mailbox.TYPE_OUTBOX + " or "
+            + MailboxColumns.SYNC_INTERVAL + "=1) and " + MailboxColumns.ACCOUNT_KEY + "=?";
+
     // Types of mailboxes.  The list is ordered to match a typical UI presentation, e.g.
     // placing the inbox at the top.
     // Arrays of "special_mailbox_display_names" and "special_mailbox_icons" are depends on
@@ -691,4 +703,27 @@ public class Mailbox extends EmailContent implements MailboxColumns, Parcelable
     public String toString() {
         return "[Mailbox " + mId + ": " + mDisplayName + "]";
     }
+
+    /**
+     * Get the mailboxes that want to receive push updates for an account.
+     * @param cr The {@link ContentResolver}.
+     * @param accountId The id for the account that is pushing.
+     * @return A cursor (suitable for use with {@link #restore}) with all mailboxes we should sync.
+     */
+    public static Cursor getMailboxesForPush(final ContentResolver cr, final long accountId) {
+        return cr.query(Mailbox.CONTENT_URI, Mailbox.CONTENT_PROJECTION,
+                SYNCING_AND_ACCOUNT_SELECTION, new String[] { Long.toString(accountId) }, null);
+    }
+
+    /**
+     * Get the mailbox ids for an account that should sync when we do a full account sync.
+     * @param cr The {@link ContentResolver}.
+     * @param accountId The id for the account that is pushing.
+     * @return A cursor (with one column, containing ids) with all mailbox ids we should sync.
+     */
+    public static Cursor getMailboxIdsForSync(final ContentResolver cr, final long accountId) {
+        return cr.query(Mailbox.CONTENT_URI, Mailbox.ID_PROJECTION,
+                OUTBOX_PLUS_SYNCING_AND_ACCOUNT_SELECTION,
+                new String[] { Long.toString(accountId) }, null);
+    }
 }

src/com/android/email/provider/DBHelper.java

@@ -143,8 +143,10 @@ public final class DBHelper {
     // Version 110: Stop updating message_count, don't use auto lookback, and don't use
     //              ping/push_hold sync states.
     // Version 111: Delete Exchange account mailboxes.
+    // Version 112: Convert Mailbox syncInterval to a boolean (whether or not this mailbox
+    //              syncs along with the account).
 
-    public static final int DATABASE_VERSION = 111;
+    public static final int DATABASE_VERSION = 112;
 
     // Any changes to the database format *must* include update-in-place code.
     // Original version: 2
@@ -1047,8 +1049,18 @@ public final class DBHelper {
                 oldVersion = 110;
             }
             if (oldVersion == 110) {
+                // Delete account mailboxes.
                 db.execSQL("delete from " + Mailbox.TABLE_NAME + " where " + MailboxColumns.TYPE
                         + "=" +Mailbox.TYPE_EAS_ACCOUNT_MAILBOX);
+                oldVersion = 111;
+            }
+            if (oldVersion == 111) {
+                // Mailbox sync interval now indicates whether this mailbox syncs with the rest
+                // of the account. Anyone who was syncing at all, plus outboxes, are set to 1,
+                // everyone else is 0.
+                db.execSQL("update " + Mailbox.TABLE_NAME + " set " + MailboxColumns.SYNC_INTERVAL
+                        + "=case when " + MailboxColumns.SYNC_INTERVAL + "="
+                        + Mailbox.CHECK_INTERVAL_NEVER + " then 0 else 1 end");
             }
         }
 

src/com/android/email/provider/EmailProvider.java

@@ -3208,7 +3208,9 @@ public class EmailProvider extends ContentProvider {
                                     new String[] {String.valueOf(mailbox.mId)});
                             // For non-push mailboxes, if it's stale (i.e. last sync was a while
                             // ago), force a sync.
-                            if (mailbox.mSyncInterval > Mailbox.CHECK_INTERVAL_PUSH) {
+                            // TODO: Fix the check for whether we're non-push? Right now it checks
+                            // whether we are participating in account sync rules.
+                            if (mailbox.mSyncInterval == 0) {
                                 final long timeSinceLastSync =
                                         System.currentTimeMillis() - mailbox.mSyncTime;
                                 if (timeSinceLastSync > AUTO_REFRESH_INTERVAL_MS) {
@@ -4350,7 +4352,7 @@ public class EmailProvider extends ContentProvider {
             m.mServerId = SEARCH_MAILBOX_SERVER_ID;
             m.mFlagVisible = false;
             m.mDisplayName = SEARCH_MAILBOX_SERVER_ID;
-            m.mSyncInterval = Mailbox.CHECK_INTERVAL_NEVER;
+            m.mSyncInterval = 0;
             m.mType = Mailbox.TYPE_SEARCH;
             m.mFlags = Mailbox.FLAG_HOLDS_MAIL;
             m.mParentKey = Mailbox.NO_MAILBOX;