matrix-veles/internal/bot/commandParser.go

111 lines
3.1 KiB
Go

/*
* Copyright © 2022 Kevin Kandlbinder.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package bot
import (
"context"
"github.com/Unkn0wnCat/matrix-veles/internal/db"
"github.com/Unkn0wnCat/matrix-veles/internal/tracer"
"go.mongodb.org/mongo-driver/bson/primitive"
"go.opentelemetry.io/otel/attribute"
"log"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/id"
"strings"
)
// handleCommand takes a command, parses it and executes any actions it implies
func handleCommand(command string, sender id.UserID, id id.RoomID, client *mautrix.Client, parentCtx context.Context) {
ctx, span := tracer.Tracer.Start(parentCtx, "handle_command")
defer span.End()
_, prepSpan := tracer.Tracer.Start(ctx, "command_prepare")
myUsername, _, err := client.UserID.Parse()
if err != nil {
prepSpan.RecordError(err)
log.Panicln("Invalid user id in client")
}
defer commandsProcessed.Inc()
command = strings.TrimPrefix(command, "!") // Remove !
command = strings.TrimPrefix(command, "@") // Remove @
command = strings.TrimPrefix(command, myUsername) // Remove our own username
command = strings.TrimPrefix(command, ":") // Remove : (as in "@soccerbot:")
command = strings.TrimSpace(command)
prepSpan.End()
span.SetAttributes(attribute.String("veles.command_handler.command", command))
// TODO: Remove this, it is debug!
log.Println(command)
// Is this a help command?
if strings.HasPrefix(command, "help") {
commandHelp(sender, id, client)
return
}
if strings.HasPrefix(command, "link ") {
commandLink(sender, id, client, strings.TrimPrefix(command, "link "))
return
}
// No match :( - display help
commandHelp(sender, id, client)
return
}
func commandLink(userId id.UserID, id id.RoomID, client *mautrix.Client, linkId string) {
linkId = strings.Trim(linkId, " \n\r")
linkIdP, err := primitive.ObjectIDFromHex(linkId)
if err != nil {
_, _ = client.SendNotice(id, "Invalid Link ID")
return
}
user, err := db.GetUserByID(linkIdP)
if err != nil {
_, _ = client.SendNotice(id, "Invalid Link ID")
return
}
err = user.ValidateMXID(userId.String())
if err != nil {
_, _ = client.SendNotice(id, "No matching link request pending")
return
}
err = db.SaveUser(user)
if err != nil {
_, _ = client.SendNotice(id, "Database error")
return
}
_, _ = client.SendNotice(id, "Successfully linked")
}
func commandHelp(_ id.UserID, id id.RoomID, client *mautrix.Client) {
// TODO: Improve help message
// Ignore errors as we can't do anything about them, the user will probably retry
_, _ = client.SendNotice(id, "matrix-veles help\n\n!veles-bot help - shows this help")
}