100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
package main
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import (
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"context"
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"time"
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"github.com/nbd-wtf/go-nostr"
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"golang.org/x/exp/maps"
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"golang.org/x/time/rate"
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)
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type Group struct {
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ID string
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Name string
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Picture string
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About string
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Members map[string]*Role
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bucket *rate.Limiter
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}
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type Role struct {
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Name string
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Permissions map[Permission]struct{}
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}
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type Permission = string
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const (
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PermAddUser Permission = "add-user"
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PermEditMetadata Permission = "edit-metadata"
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PermDeleteEvent Permission = "delete-event"
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PermRemoveUser Permission = "remove-user"
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PermAddPermission Permission = "add-permission"
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PermRemovePermission Permission = "remove-permission"
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)
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var availablePermissions = map[Permission]struct{}{
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PermAddUser: {},
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PermEditMetadata: {},
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PermDeleteEvent: {},
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PermRemoveUser: {},
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PermAddPermission: {},
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PermRemovePermission: {},
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}
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var (
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groups = make(map[string]*Group)
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// used for the default role, the actual relay, hidden otherwise
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masterRole *Role = &Role{"master", map[Permission]struct{}{
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PermAddUser: {},
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PermEditMetadata: {},
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PermDeleteEvent: {},
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PermRemoveUser: {},
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PermAddPermission: {},
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PermRemovePermission: {},
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}}
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// used for normal members without admin powers, not displayed
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emptyRole *Role = nil
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)
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// loadGroup loads all the group metadata from all the past action messages
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func loadGroup(ctx context.Context, id string) *Group {
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if group, ok := groups[id]; ok {
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return group
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}
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group := &Group{
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ID: id,
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Members: map[string]*Role{
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s.RelayPubkey: masterRole,
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},
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// very strict rate limits
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bucket: rate.NewLimiter(rate.Every(time.Minute*2), 15),
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}
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ch, _ := db.QueryEvents(ctx, nostr.Filter{
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Limit: 5000, Kinds: maps.Keys(moderationActionFactories), Tags: nostr.TagMap{"h": []string{id}},
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})
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events := make([]*nostr.Event, 0, 5000)
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for event := range ch {
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events = append(events, event)
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}
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if len(events) == 0 {
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// create group here
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return group
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}
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for i := len(events) - 1; i >= 0; i-- {
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evt := events[i]
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act, _ := moderationActionFactories[evt.Kind](evt)
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act.Apply(group)
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}
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groups[id] = group
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return group
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}
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