@@ -1,1 +1,2 @@
 taigobot
+badger/

@@ -0,0 +1,7 @@
+package db
+
+import (
+	"github.com/dgraph-io/badger/v3"
+)
+
+var DB *badger.DB

@@ -2,4 +2,25 @@ module git.icyphox.sh/taigobot
 
 go 1.17
 
-require gopkg.in/irc.v3 v3.1.4
+require (
+	github.com/dgraph-io/badger/v3 v3.2103.2
+	github.com/dustin/go-humanize v1.0.0
+	gopkg.in/irc.v3 v3.1.4
+)
+
+require (
+	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/dgraph-io/ristretto v0.1.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
+	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
+	github.com/golang/protobuf v1.3.1 // indirect
+	github.com/golang/snappy v0.0.3 // indirect
+	github.com/google/flatbuffers v1.12.1 // indirect
+	github.com/klauspost/compress v1.12.3 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	go.opencensus.io v0.22.5 // indirect
+	golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect
+	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
+)

@@ -1,13 +1,140 @@
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+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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+golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
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+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/irc.v3 v3.1.4 h1:DYGMRFbtseXEh+NadmMUFzMraqyuUj4I3iWYFEzDZPc=
 gopkg.in/irc.v3 v3.1.4/go.mod h1:shO2gz8+PVeS+4E6GAny88Z0YVVQSxQghdrMVGQsR9s=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

@@ -4,7 +4,9 @@ import (
 	"log"
 	"net"
 
+	"git.icyphox.sh/taigobot/db"
 	"git.icyphox.sh/taigobot/plugins"
+	"github.com/dgraph-io/badger/v3"
 	"gopkg.in/irc.v3"
 )
 
@@ -42,6 +44,12 @@ User:    "taigobot",
 		Name:    "taigobot",
 		Handler: irc.HandlerFunc(ircHandler),
 	}
+
+	db.DB, err = badger.Open(badger.DefaultOptions("./badger"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.DB.Close()
 
 	client := irc.NewClient(conn, config)
 	err = client.Run()

@@ -0,0 +1,55 @@
+// Listenbrainz now-playing info.
+package plugins
+
+import (
+	"strings"
+
+	"git.icyphox.sh/taigobot/plugins/listenbrainz"
+	"github.com/dgraph-io/badger/v3"
+	"gopkg.in/irc.v3"
+)
+
+func init() {
+	Register(Listenbrainz{})
+}
+
+type Listenbrainz struct{}
+
+func (Listenbrainz) Triggers() []string {
+	return []string{".np", ".lbz"}
+}
+
+func (Listenbrainz) Execute(m *irc.Message) (string, error) {
+	parts := strings.SplitN(m.Trailing(), " ", 2)
+	trigger := parts[0]
+
+	switch trigger {
+	case ".lbz":
+		if len(parts) == 2 {
+			arg := parts[1]
+			err := listenbrainz.Setup(arg, m.Prefix.Name)
+			if err != nil {
+				return "Database error", err
+			}
+			return "Successfully set Listenbrainz username", nil
+		} else {
+			return "Usage: .lbz <username>", nil
+		}
+	case ".np":
+		user, err := listenbrainz.GetUser(m.Prefix.Name)
+		if err == badger.ErrKeyNotFound {
+			return "User not found. Set it using '.lbz <username>'", nil
+		} else if err != nil {
+			return "Database error", err
+		}
+
+		np, err := listenbrainz.NowPlaying(user)
+		if err != nil {
+			return "Listenbrainz error", err
+		}
+
+		return np, nil
+	}
+
+	return "", nil
+}

@@ -0,0 +1,43 @@
+package listenbrainz
+
+import (
+	"fmt"
+
+	"git.icyphox.sh/taigobot/db"
+	"github.com/dgraph-io/badger/v3"
+)
+
+// Store the Listenbrainz username against the nick.
+func Setup(lbzUser, nick string) error {
+	err := db.DB.Update(func(txn *badger.Txn) error {
+		err := txn.Set([]byte(fmt.Sprintf("lbz/%s", nick)), []byte(lbzUser))
+		return err
+	})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Gets the Listenbrainz username from the DB.
+func GetUser(nick string) (string, error) {
+	var user string
+	err := db.DB.View(func(txn *badger.Txn) error {
+		item, err := txn.Get([]byte(fmt.Sprintf("lbz/%s", nick)))
+		if err != nil {
+			return err
+		}
+
+		err = item.Value(func(val []byte) error {
+			user = string(val)
+			return nil
+		})
+		return nil
+	})
+
+	if err != nil {
+		return "", err
+	}
+	return user, nil
+}

@@ -0,0 +1,85 @@
+package listenbrainz
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/dustin/go-humanize"
+)
+
+type ListenInfo struct {
+	Payload struct {
+		Count   int `json:"count"`
+		Listens []struct {
+			InsertedAt    string `json:"inserted_at"`
+			ListenedAt    int    `json:"listened_at"`
+			TrackMetadata struct {
+				ArtistName  string `json:"artist_name"`
+				ReleaseName string `json:"release_name"`
+				TrackName   string `json:"track_name"`
+			} `json:"track_metadata"`
+			UserName string `json:"user_name"`
+		} `json:"listens"`
+	} `json:"payload"`
+}
+
+func getListen(url string) (*ListenInfo, error) {
+	li := ListenInfo{}
+	r, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	} else if r.StatusCode != 200 {
+		return nil, fmt.Errorf("non-200 response from Listenbrainz")
+	}
+
+	json.NewDecoder(r.Body).Decode(&li)
+	defer r.Body.Close()
+
+	return &li, err
+}
+
+func NowPlaying(user string) (string, error) {
+	url := fmt.Sprintf(
+		"https://api.listenbrainz.org/1/user/%s/playing-now",
+		user,
+	)
+	li, err := getListen(url)
+	if err != nil {
+		return "", err
+	}
+
+	if len(li.Payload.Listens) != 0 {
+		// Now playing a track
+		tm := li.Payload.Listens[0].TrackMetadata
+		return fmt.Sprintf(
+			"%s is currently listening to \"%s\" by \x02%s\x02, from the album \x02%s\x02",
+			user,
+			tm.TrackName,
+			tm.ArtistName,
+			tm.ReleaseName,
+		), nil
+	} else {
+		// Last listen
+		url = fmt.Sprintf(
+			"https://api.listenbrainz.org/1/user/%s/listens?count=1",
+			user,
+		)
+		li, err := getListen(url)
+		if err != nil {
+			return "", err
+		}
+
+		tm := li.Payload.Listens[0].TrackMetadata
+		listenedAt, _ := time.Parse(time.RFC1123, li.Payload.Listens[0].InsertedAt)
+		return fmt.Sprintf(
+			"%s listened to \"%s\" by \x02%s\x02, from the album \x02%s\x02, %s",
+			user,
+			tm.TrackName,
+			tm.ArtistName,
+			tm.ReleaseName,
+			humanize.Time(listenedAt),
+		), nil
+	}
+}