initial commit of fafomo, the FAFO Matrix Bot

This commit is contained in:
Leah Neukirchen 2024-09-26 22:41:03 +02:00
commit 385f5dda97
4 changed files with 264 additions and 0 deletions

5
dotenv.template Normal file
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FAFOMO_HOMESERVER=matrix.org
FAFOMO_USERNAME=@fafomo:matrix.org
FAFOMO_PASSWORD=
FAFOMO_ROOM=
FAFOMO_BACKEND=

193
fafomo.go Normal file
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// Copyright (C) 2024 Leah Neukirchen
//
// based on mautrix-go example code:
//
// Copyright (C) 2017 Tulir Asokan
// Copyright (C) 2018-2020 Luca Weiss
// Copyright (C) 2023 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package main
import (
"context"
"encoding/json"
"errors"
"log"
"net/http"
"os"
"os/signal"
"strings"
"sync"
"time"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/id"
)
var backend string
var folks map[string]struct{}
type JSONTop struct {
Users []JSONUser `json:"users"`
}
type JSONUser struct {
Login string `json:"login"`
}
func ircquote(s string) string {
if len(s) < 1 {
return s // bad luck, V
}
ZWJ := "\u200d"
return s[0:1] + ZWJ + s[1:]
}
func listFmt(list []string) string {
return "[ " + strings.Join(list, " ") + " ]"
}
func update(ctx context.Context) string {
req, err := http.NewRequestWithContext(ctx, "GET", backend, nil)
if err != nil {
panic(err)
}
res, err := http.DefaultClient.Do(req)
if err != nil {
panic(err)
}
defer res.Body.Close()
var users JSONTop
json.NewDecoder(res.Body).Decode(&users)
var left []string
var arrived []string
var unchanged []string
new_folks := make(map[string]struct{})
for _, user := range users.Users {
new_folks[user.Login] = struct{}{}
if _, ok := folks[user.Login]; !ok {
arrived = append(arrived, user.Login)
} else {
unchanged = append(unchanged, user.Login)
}
}
for user, _ := range folks {
if _, ok := new_folks[user]; !ok {
left = append(left, user)
}
}
folks = new_folks
// no change
if len(arrived) == 0 && len(left) == 0 {
return ""
}
message := ""
if len(arrived) > 0 {
message += "arrived: " + listFmt(arrived) + "; "
}
if len(left) > 0 {
message += "left: " + listFmt(left) + "; "
}
if len(unchanged) > 0 {
message += "also there: " + listFmt(unchanged) + "; "
}
return message
}
func main() {
homeserver := os.Getenv("FAFOMO_HOMESERVER")
username := os.Getenv("FAFOMO_USERNAME")
password := os.Getenv("FAFOMO_PASSWORD")
room := os.Getenv("FAFOMO_ROOM")
backend = os.Getenv("FAFOMO_BACKEND")
startCtx, _ := context.WithTimeout(context.Background(), 20*time.Second)
update(startCtx)
client, err := mautrix.NewClient(homeserver, id.UserID(username), "")
if err != nil {
panic(err)
}
log.Println("Logging in...")
login, err := client.Login(startCtx, &mautrix.ReqLogin{
Type: mautrix.AuthTypePassword,
Identifier: mautrix.UserIdentifier{Type: mautrix.IdentifierTypeUser, User: username},
Password: password,
})
client.AccessToken = login.AccessToken
syncer := client.Syncer.(*mautrix.DefaultSyncer)
syncer.OnEventType(event.EventMessage, func(ctx context.Context, evt *event.Event) {
// log.Info().
// Str("sender", evt.Sender.String()).
// Str("type", evt.Type.String()).
// Str("id", evt.ID.String()).
// Str("body", evt.Content.AsMessage().Body).
// Msg("Received message")
})
if err != nil {
panic(err)
}
log.Println("Now running...")
syncCtx, _ := context.WithCancel(context.Background())
syncCtx, stop := signal.NotifyContext(syncCtx, os.Interrupt)
defer stop()
var syncStopWait sync.WaitGroup
syncStopWait.Add(1)
go func() {
err = client.SyncWithContext(syncCtx)
defer syncStopWait.Done()
if err != nil && !errors.Is(err, context.Canceled) {
panic(err)
}
}()
ticker := time.NewTicker(60 * time.Second)
for {
select {
case <-ticker.C:
ctx, _ := context.WithTimeout(syncCtx, 5*time.Second)
message := update(ctx)
if message != "" {
log.Printf("Sent update: %s\n", message)
_, err := client.SendText(ctx, id.RoomID(room), message)
if err != nil {
log.Printf("Failed to send event: %v\n", err)
}
}
case <-syncCtx.Done():
return
}
}
stop()
syncStopWait.Wait()
log.Println("Exited")
}

21
go.mod Normal file
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module fa-fo.de/fafomo
go 1.23.0
require maunium.net/go/mautrix v0.21.0
require (
filippo.io/edwards25519 v1.1.0 // indirect
github.com/mattn/go-colorable v0.1.13 // indirect
github.com/mattn/go-isatty v0.0.19 // indirect
github.com/rs/zerolog v1.33.0 // indirect
github.com/tidwall/gjson v1.17.3 // indirect
github.com/tidwall/match v1.1.1 // indirect
github.com/tidwall/pretty v1.2.0 // indirect
github.com/tidwall/sjson v1.2.5 // indirect
go.mau.fi/util v0.8.0 // indirect
golang.org/x/crypto v0.27.0 // indirect
golang.org/x/exp v0.0.0-20240909161429-701f63a606c0 // indirect
golang.org/x/net v0.29.0 // indirect
golang.org/x/sys v0.25.0 // indirect
)

45
go.sum Normal file
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filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
github.com/rs/zerolog v1.33.0 h1:1cU2KZkvPxNyfgEmhHAz/1A9Bz+llsdYzklWFzgp0r8=
github.com/rs/zerolog v1.33.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWRHss=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
github.com/tidwall/gjson v1.17.3 h1:bwWLZU7icoKRG+C+0PNwIKC6FCJO/Q3p2pZvuP0jN94=
github.com/tidwall/gjson v1.17.3/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
go.mau.fi/util v0.8.0 h1:MiSny8jgQq4XtCLAT64gDJhZVhqiDeMVIEBDFVw+M0g=
go.mau.fi/util v0.8.0/go.mod h1:1Ixb8HWoVbl3rT6nAX6nV4iMkzn7KU/KXwE0Rn5RmsQ=
golang.org/x/crypto v0.27.0 h1:GXm2NjJrPaiv/h1tb2UH8QfgC/hOf/+z0p6PT8o1w7A=
golang.org/x/crypto v0.27.0/go.mod h1:1Xngt8kV6Dvbssa53Ziq6Eqn0HqbZi5Z6R0ZpwQzt70=
golang.org/x/exp v0.0.0-20240909161429-701f63a606c0 h1:e66Fs6Z+fZTbFBAxKfP3PALWBtpfqks2bwGcexMxgtk=
golang.org/x/exp v0.0.0-20240909161429-701f63a606c0/go.mod h1:2TbTHSBQa924w8M6Xs1QcRcFwyucIwBGpK1p2f1YFFY=
golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
maunium.net/go/mautrix v0.21.0 h1:Z6nVu+clkJgj6ANwFYQQ1BtYeVXZPZ9lRgwuFN57gOY=
maunium.net/go/mautrix v0.21.0/go.mod h1:qm9oDhcHxF/Xby5RUuONIGpXw1SXXqLZj/GgvMxJxu0=