Thinking about how searching in the app scope should work if the user is offline and it causes some interesting complications.
Here's what I assume is a minimum functionality we need to deliver: 1) If the user, offline, searches for "browser" we should locate all web browsers he has installed. 2) If the user, offline, searches for "navegador" (browser in spanish) and his phone's locale is spanish, he should find all the browsers he has installed. So, we will need some sort of app metadata cache we update on installation and which we can query (sounds familiar? ;-) Since "browser" is not in the app name, but in the description, that database needs to include metadata, including localized versions of it. We even have to query this database when the user is online, because if we just rely on the server's results and then filter by installed/not installed we will not find intalled apps which are very low matches on the server (say, the 350th web browser). So, who updates this metadata DB? My guess is the click installer does, since the app scope has no way of knowing if installation succeeded or not (there's no callback from the installer). Also, it needs to be pre-populated for pre-installed apps. If we put it in the installer, then that can happen naturally. This also gives a solution to the question of getting the version numbers of installed apps: we just query this DB Finally: preinstalled apps are system-wide (right?) so there are going to be two DBs?
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