[feature] Fetch + create domain permissions from subscriptions nightly (#3635)

* peepeepoopoo

* test domain perm subs

* swagger

* envparsing

* dries your wets

* start on docs

* finish up docs

* copy paste errors

* rename actions package

* rename force -> skipCache

* move obfuscate parse nearer to where err is checked

* make higherPrios a simple slice

* don't use receiver for permsFrom funcs

* add more context to error logs

* defer finished log

* use switch for permType instead of if/else

* thanks linter, love you <3

* validate csv headers before full read

* use bufio scanner

1 files changed, 99 insertions, 0 deletions

diff --git a/internal/admin/util.go b/internal/admin/util.go
new file mode 100644
index 000000000..27e81fbb3
--- /dev/null
+++ b/internal/admin/util.go
@@ -0,0 +1,99 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package admin
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+// stubbifyInstance renders the given instance as a stub,
+// removing most information from it and marking it as
+// suspended.
+//
+// For caller's convenience, this function returns the db
+// names of all columns that are updated by it.
+func stubbifyInstance(instance *gtsmodel.Instance, domainBlockID string) []string {
+	instance.Title = ""
+	instance.SuspendedAt = time.Now()
+	instance.DomainBlockID = domainBlockID
+	instance.ShortDescription = ""
+	instance.Description = ""
+	instance.Terms = ""
+	instance.ContactEmail = ""
+	instance.ContactAccountUsername = ""
+	instance.ContactAccountID = ""
+	instance.Version = ""
+
+	return []string{
+		"title",
+		"suspended_at",
+		"domain_block_id",
+		"short_description",
+		"description",
+		"terms",
+		"contact_email",
+		"contact_account_username",
+		"contact_account_id",
+		"version",
+	}
+}
+
+// rangeDomainAccounts iterates through all accounts
+// originating from the given domain, and calls the
+// provided range function on each account.
+//
+// If an error is returned while selecting accounts,
+// the loop will stop and return the error.
+func (a *Actions) rangeDomainAccounts(
+	ctx context.Context,
+	domain string,
+	rangeF func(*gtsmodel.Account),
+) error {
+	var (
+		limit = 50   // Limit selection to avoid spiking mem/cpu.
+		maxID string // Start with empty string to select from top.
+	)
+
+	for {
+		// Get (next) page of accounts.
+		accounts, err := a.db.GetInstanceAccounts(ctx, domain, maxID, limit)
+		if err != nil && !errors.Is(err, db.ErrNoEntries) {
+			// Real db error.
+			return gtserror.Newf("db error getting instance accounts: %w", err)
+		}
+
+		if len(accounts) == 0 {
+			// No accounts left, we're done.
+			return nil
+		}
+
+		// Set next max ID for paging down.
+		maxID = accounts[len(accounts)-1].ID
+
+		// Call provided range function.
+		for _, account := range accounts {
+			rangeF(account)
+		}
+	}
+}