mautrix-discord/config/bridge.go

158 lines
4.6 KiB
Go

// mautrix-discord - A Matrix-Discord puppeting bridge.
// Copyright (C) 2022 Tulir Asokan
//
// 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 <https://www.gnu.org/licenses/>.
package config
import (
"fmt"
"strings"
"text/template"
"github.com/bwmarrin/discordgo"
"maunium.net/go/mautrix/bridge/bridgeconfig"
)
type BridgeConfig struct {
UsernameTemplate string `yaml:"username_template"`
DisplaynameTemplate string `yaml:"displayname_template"`
ChannelnameTemplate string `yaml:"channelname_template"`
CommandPrefix string `yaml:"command_prefix"`
ManagementRoomText bridgeconfig.ManagementRoomTexts `yaml:"management_room_text"`
PortalMessageBuffer int `yaml:"portal_message_buffer"`
SyncWithCustomPuppets bool `yaml:"sync_with_custom_puppets"`
SyncDirectChatList bool `yaml:"sync_direct_chat_list"`
DefaultBridgeReceipts bool `yaml:"default_bridge_receipts"`
DefaultBridgePresence bool `yaml:"default_bridge_presence"`
DoublePuppetServerMap map[string]string `yaml:"double_puppet_server_map"`
DoublePuppetAllowDiscovery bool `yaml:"double_puppet_allow_discovery"`
LoginSharedSecretMap map[string]string `yaml:"login_shared_secret_map"`
Encryption bridgeconfig.EncryptionConfig `yaml:"encryption"`
Provisioning struct {
Prefix string `yaml:"prefix"`
SharedSecret string `yaml:"shared_secret"`
} `yaml:"provisioning"`
Permissions bridgeconfig.PermissionConfig `yaml:"permissions"`
usernameTemplate *template.Template `yaml:"-"`
displaynameTemplate *template.Template `yaml:"-"`
channelnameTemplate *template.Template `yaml:"-"`
}
type umBridgeConfig BridgeConfig
func (bc *BridgeConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
err := unmarshal((*umBridgeConfig)(bc))
if err != nil {
return err
}
bc.usernameTemplate, err = template.New("username").Parse(bc.UsernameTemplate)
if err != nil {
return err
} else if !strings.Contains(bc.FormatUsername("1234567890"), "1234567890") {
return fmt.Errorf("username template is missing user ID placeholder")
}
bc.displaynameTemplate, err = template.New("displayname").Parse(bc.DisplaynameTemplate)
if err != nil {
return err
}
bc.channelnameTemplate, err = template.New("channelname").Parse(bc.ChannelnameTemplate)
if err != nil {
return err
}
return nil
}
var _ bridgeconfig.BridgeConfig = (*BridgeConfig)(nil)
func (bc BridgeConfig) GetEncryptionConfig() bridgeconfig.EncryptionConfig {
return bc.Encryption
}
func (bc BridgeConfig) GetCommandPrefix() string {
return bc.CommandPrefix
}
func (bc BridgeConfig) GetManagementRoomTexts() bridgeconfig.ManagementRoomTexts {
return bc.ManagementRoomText
}
func (bc BridgeConfig) FormatUsername(userid string) string {
var buffer strings.Builder
_ = bc.usernameTemplate.Execute(&buffer, userid)
return buffer.String()
}
func (bc BridgeConfig) FormatDisplayname(user *discordgo.User) string {
var buffer strings.Builder
_ = bc.displaynameTemplate.Execute(&buffer, user)
return buffer.String()
}
type wrappedChannel struct {
*discordgo.Channel
Guild string
Folder string
}
func (bc BridgeConfig) FormatChannelname(channel *discordgo.Channel, session *discordgo.Session) (string, error) {
var buffer strings.Builder
var guildName, folderName string
if channel.Type != discordgo.ChannelTypeDM && channel.Type != discordgo.ChannelTypeGroupDM {
guild, err := session.Guild(channel.GuildID)
if err != nil {
return "", fmt.Errorf("find guild: %w", err)
}
guildName = guild.Name
folder, err := session.Channel(channel.ParentID)
if err == nil {
folderName = folder.Name
}
} else {
// Group DM's can have a name, but DM's can't, so if we didn't get a
// name return a comma separated list of the formatted user names.
if channel.Name == "" {
recipients := make([]string, len(channel.Recipients))
for idx, user := range channel.Recipients {
recipients[idx] = bc.FormatDisplayname(user)
}
return strings.Join(recipients, ", "), nil
}
}
_ = bc.channelnameTemplate.Execute(&buffer, wrappedChannel{
Channel: channel,
Guild: guildName,
Folder: folderName,
})
return buffer.String(), nil
}