Domain block (#76)

* start work on admin domain blocking

* move stuff around + further work on domain blocks

* move + restructure processor

* prep work for deleting account

* tidy

* go fmt

* formatting

* domain blocking more work

* check domain blocks way earlier on

* progress on delete account

* delete more stuff when an account is gone

* and more...

* domain blocky block block

* get individual domain block, delete a block

3 files changed, 59 insertions, 18 deletions

diff --git a/internal/db/db.go b/internal/db/db.go
index 204f04c71..1ec02d22c 100644
--- a/internal/db/db.go
+++ b/internal/db/db.go
@@ -65,11 +65,6 @@ type DB interface {
 	// In case of no entries, a 'no entries' error will be returned
 	GetWhere(where []Where, i interface{}) error
 
-	// // GetWhereMany gets one entry where key = value for *ALL* parameters passed as "where".
-	// // That is, if you pass 2 'where' entries, with 1 being Key username and Value test, and the second
-	// // being Key domain and Value example.org, only entries will be returned where BOTH conditions are true.
-	// GetWhereMany(i interface{}, where ...model.Where) error
-
 	// GetAll will try to get all entries of type i.
 	// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
 	// In case of no entries, a 'no entries' error will be returned
@@ -155,11 +150,11 @@ type DB interface {
 	// CountStatusesByAccountID is a shortcut for the common action of counting statuses produced by accountID.
 	CountStatusesByAccountID(accountID string) (int, error)
 
-	// GetStatusesByTimeDescending is a shortcut for getting the most recent statuses. accountID is optional, if not provided
+	// GetStatusesForAccount is a shortcut for getting the most recent statuses. accountID is optional, if not provided
 	// then all statuses will be returned. If limit is set to 0, the size of the returned slice will not be limited. This can
 	// be very memory intensive so you probably shouldn't do this!
 	// In case of no entries, a 'no entries' error will be returned
-	GetStatusesByTimeDescending(accountID string, statuses *[]gtsmodel.Status, limit int, excludeReplies bool, maxID string, pinned bool, mediaOnly bool) error
+	GetStatusesForAccount(accountID string, limit int, excludeReplies bool, maxID string, pinnedOnly bool, mediaOnly bool) ([]*gtsmodel.Status, error)
 
 	// GetLastStatusForAccountID simply gets the most recent status by the given account.
 	// The given slice 'status' pointer will be set to the result of the query, whatever it is.
@@ -261,6 +256,10 @@ type DB interface {
 
 	// GetDomainCountForInstance returns the number of known instances known that the given domain federates with.
 	GetDomainCountForInstance(domain string) (int, error)
+
+	// GetAccountsForInstance returns a slice of accounts from the given instance, arranged by ID.
+	GetAccountsForInstance(domain string, maxID string, limit int) ([]*gtsmodel.Account, error)
+
 	/*
 		USEFUL CONVERSION FUNCTIONS
 	*/
diff --git a/internal/db/pg/instancestats.go b/internal/db/pg/instance.go
index b57591d7b..2de0c5366 100644
--- a/internal/db/pg/instancestats.go
+++ b/internal/db/pg/instance.go
@@ -2,6 +2,7 @@ package pg
 
 import (
 	"github.com/go-pg/pg/v10"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 )
 
@@ -50,3 +51,33 @@ func (ps *postgresService) GetDomainCountForInstance(domain string) (int, error)
 
 	return q.Count()
 }
+
+func (ps *postgresService) GetAccountsForInstance(domain string, maxID string, limit int) ([]*gtsmodel.Account, error) {
+	ps.log.Debug("GetAccountsForInstance")
+
+	accounts := []*gtsmodel.Account{}
+
+	q := ps.conn.Model(&accounts).Where("domain = ?", domain).Order("id DESC")
+
+	if maxID != "" {
+		q = q.Where("id < ?", maxID)
+	}
+
+	if limit > 0 {
+		q = q.Limit(limit)
+	}
+
+	err := q.Select()
+	if err != nil {
+		if err == pg.ErrNoRows {
+			return nil, db.ErrNoEntries{}
+		}
+		return nil, err
+	}
+
+	if len(accounts) == 0 {
+		return nil, db.ErrNoEntries{}
+	}
+
+	return accounts, nil
+}
diff --git a/internal/db/pg/pg.go b/internal/db/pg/pg.go
index 2758d3c3d..1050f141e 100644
--- a/internal/db/pg/pg.go
+++ b/internal/db/pg/pg.go
@@ -511,39 +511,50 @@ func (ps *postgresService) CountStatusesByAccountID(accountID string) (int, erro
 	return count, nil
 }
 
-func (ps *postgresService) GetStatusesByTimeDescending(accountID string, statuses *[]gtsmodel.Status, limit int, excludeReplies bool, maxID string, pinned bool, mediaOnly bool) error {
-	q := ps.conn.Model(statuses).Order("created_at DESC")
+func (ps *postgresService) GetStatusesForAccount(accountID string, limit int, excludeReplies bool, maxID string, pinnedOnly bool, mediaOnly bool) ([]*gtsmodel.Status, error) {
+	ps.log.Debugf("getting statuses for account %s", accountID)
+	statuses := []*gtsmodel.Status{}
+
+	q := ps.conn.Model(&statuses).Order("id DESC")
 	if accountID != "" {
 		q = q.Where("account_id = ?", accountID)
 	}
+
 	if limit != 0 {
 		q = q.Limit(limit)
 	}
+
 	if excludeReplies {
 		q = q.Where("? IS NULL", pg.Ident("in_reply_to_id"))
 	}
-	if pinned {
+
+	if pinnedOnly {
 		q = q.Where("pinned = ?", true)
 	}
+
 	if mediaOnly {
 		q = q.WhereGroup(func(q *pg.Query) (*pg.Query, error) {
 			return q.Where("? IS NOT NULL", pg.Ident("attachments")).Where("attachments != '{}'"), nil
 		})
 	}
+
 	if maxID != "" {
-		s := &gtsmodel.Status{}
-		if err := ps.conn.Model(s).Where("id = ?", maxID).Select(); err != nil {
-			return err
-		}
-		q = q.Where("status.created_at < ?", s.CreatedAt)
+		q = q.Where("id < ?", maxID)
 	}
+
 	if err := q.Select(); err != nil {
 		if err == pg.ErrNoRows {
-			return db.ErrNoEntries{}
+			return nil, db.ErrNoEntries{}
 		}
-		return err
+		return nil, err
 	}
-	return nil
+
+	if len(statuses) == 0 {
+		return nil, db.ErrNoEntries{}
+	}
+
+	ps.log.Debugf("returning statuses for account %s", accountID)
+	return statuses, nil
 }
 
 func (ps *postgresService) GetLastStatusForAccountID(accountID string, status *gtsmodel.Status) error {