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package channel
import (
"citrons.xyz/talk/proto"
"citrons.xyz/talk/server/object"
"citrons.xyz/talk/server/session"
"citrons.xyz/talk/server/validate"
"citrons.xyz/talk/server/user"
)
type ChannelStore struct {
world *object.World
byName map[string]*Channel
deleted map[string]Tombstone
}
type Channel struct {
store *ChannelStore
id string
name string
members map[string]Membership
messages []proto.Object
byId map[string]int
defaultMembership Membership
Stream session.Stream
}
type Tombstone struct {
name string
}
func NewStore(world *object.World) *ChannelStore {
return &ChannelStore {
world, make(map[string]*Channel), make(map[string]Tombstone),
}
}
func (cs *ChannelStore) CreateChannel(name string) (*Channel, *proto.Fail) {
if cs.ByName(name) != nil {
return nil, &proto.Fail {
"name-taken", "", map[string]string {"": name},
}
}
if !validate.Name(name) {
return nil, &proto.Fail {
"invalid-name", "", map[string]string {"": name},
}
}
var c Channel
c.store = cs
c.name = name
c.members = make(map[string]Membership)
c.byId = make(map[string]int)
c.defaultMembership = DefaultMembership
cs.byName[validate.Fold(name)] = &c
c.id = cs.world.NewObject(&c)
return &c, nil
}
func (cs *ChannelStore) ByName(name string) *Channel {
return cs.byName[validate.Fold(name)]
}
func (c *Channel) Name() string {
return c.name
}
func (c *Channel) Id() string {
return c.id
}
func (c *Channel) Rename(name string) *proto.Fail {
if !validate.Name(name) {
return &proto.Fail {
"invalid-name", "", map[string]string {"": name},
}
}
if validate.Fold(name) == validate.Fold(c.name) {
c.name = name
return nil
}
if c.store.ByName(name) != nil {
return &proto.Fail {
"name-taken", "", map[string]string {"": name},
}
}
c.store.byName[validate.Fold(c.name)] = nil
c.store.byName[validate.Fold(name)] = c
c.name = name
return nil
}
func (c *Channel) Put(m proto.Object) proto.Object {
m.Id = proto.GenId()
m.Fields["t"] = proto.Timestamp()
c.byId[m.Id] = len(c.messages)
c.messages = append(c.messages, m)
for s, _ := range c.Stream.Subscribers() {
if m.Fields["f"] == s.UserId {
continue
}
if c.members[s.UserId].See {
s.Event(proto.NewCmd("p", c.id, m))
}
}
return m
}
func (c *Channel) prune() {
for m, _ := range c.members {
switch c.store.world.GetObject(m).(type) {
case *user.User:
default:
delete(c.members, m)
}
}
}
func (c *Channel) Join(u *user.User) *proto.Fail {
if c.members[u.Id()].Yes {
return nil
}
c.members[u.Id()] = c.defaultMembership
u.Channels[c.id] = true
c.Put(proto.Object{"join", "", map[string]string {"": u.Id()}})
return nil
}
func (c *Channel) Leave(u *user.User) *proto.Fail {
if !c.members[u.Id()].Yes {
return nil
}
delete(c.members, u.Id())
delete(u.Channels, c.id)
c.Put(proto.Object{"leave", "", map[string]string {"": u.Id()}})
return nil
}
func (c *Channel) Members() map[string]Membership {
c.prune()
return c.members
}
func (c *Channel) SetMembership(u *user.User, m Membership) {
if c.members[u.Id()].Yes {
c.members[u.Id()] = m
}
}
func (c *Channel) Delete() {
c.Stream.Event(proto.NewCmd("delete", c.id))
c.Stream.UnsubscribeAll()
for m, _ := range c.members {
switch u := c.store.world.GetObject(m).(type) {
case *user.User:
u.Channels[c.id] = false
default:
}
}
delete(c.store.byName, validate.Fold(c.name))
c.store.world.RemoveObject(c.id)
deleted := Tombstone {c.name}
c.store.deleted[c.id] = deleted
c.store.world.PutObject(c.id, deleted)
}
func (c *Channel) GetInfo() proto.Object {
return proto.Object {
"channel", c.id, map[string]string {"": c.name},
}
}
func (t Tombstone) GetInfo() proto.Object {
return proto.Object {
"deleted", "", map[string]string {"": t.name},
}
}
|
