+create view packagefiles_pkgid as
+select printf('%s-%s-%s', package, version, release) as pkgid, *,
+printf('%s:%o:%s:%s', filetype, mode, username, groupname) as mds
+from packagefiles
+;
+
+create trigger packagefiles_update_trigger instead of
+update on packagefiles_pkgid
+begin
+ update packagefiles
+ set package = NEW.package,
+ version = NEW.version,
+ release = NEW.release,
+ path = NEW.path,
+ mode = NEW.mode,
+ username = NEW.username,
+ groupname = NEW.groupname,
+ uid = NEW.uid,
+ gid = NEW.gid,
+ configuration = NEW.configuration,
+ filetype = NEW.filetype,
+ target = NEW.target,
+ devmajor = NEW.devmajor,
+ devminor = NEW.devminor,
+ hash = NEW.hash,
+ mtime = NEW.mtime
+ where package = OLD.package
+ and version = OLD.version
+ and release = OLD.release
+ and path = OLD.path
+ ;
+end
+;
+
+create view installed_ref_count as
+select I.path, count(*) as refcount
+from installedfiles I
+group by I.path
+;
+
+create view sync_status_ref_count as
+select path, status, count(*) as refcount
+from packagefiles_status
+where status in ('installed', 'installing', 'removing')
+group by path, status
+;
+
+create view packagefiles_status as
+select P.status, PF.*
+from packagefiles_pkgid PF
+left join packages_pkgid P on P.pkgid = PF.pkgid
+;
+
+create view installedfiles as
+select * from packagefiles_status
+where status = 'installed'
+;
+
+create view install_status as
+
+select 'new' as op, PN.*
+from packagefiles_status PN
+left join installed_ref_count RC on RC.path = PN.path
+where RC.refcount is null
+and PN.status = 'installing'
+
+union all
+
+select 'update' as op, PN.*
+from packagefiles_status PN
+inner join installedfiles PI on PI.path = PN.path and PI.package = PN.package
+left join installed_ref_count RC on RC.path = PN.path
+where RC.refcount = 1
+and PN.status = 'installing'
+and PI.hash is not PN.hash
+
+union all
+
+select 'conflict' as op, PI.*
+from packagefiles_status PN
+inner join installedfiles PI on PI.path = PN.path and PI.package != PN.package
+where PN.status = 'installing'
+
+union all
+select 'remove' as op, PI.*
+from installedfiles PI
+left join packagefiles_status PN
+ on PI.path = PN.path and PI.package = PN.package
+ and PI.pkgid != PN.pkgid
+where PN.path is null
+and PI.package in (select package from packages where status = 'installing')
+
+union all
+-- remove files in removing, but not installing
+select distinct 'remove' as op, PR.*
+from packagefiles_status PR
+left join packagefiles_status PN
+on PR.path = PN.path
+and PR.pkgid != PN.pkgid and PN.status in ('installing', 'installed')
+where PN.path is null
+and PR.status = 'removing'
+;
+