commit 7c10a881fe26609b71d595ae8ca8c0f01dfeeca3
Author: lash <dev@holbrook.no>
Date:   Wed Oct 23 21:01:10 2024 +0100

    Initial commit

diff --git a/cmd/main.go b/cmd/main.go
new file mode 100644
index 0000000..6da3660
--- /dev/null
+++ b/cmd/main.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"git.grassecon.net/term/event/nats"
+)
+
+func main() {
+	ctx := context.Background()
+	n := nats.NewNatsSubscription()
+	err := n.Connect(ctx, "localhost:4222")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Connect err: %v", err)
+		os.Exit(1)
+	}
+	defer n.Close()
+
+	cint := make(chan os.Signal)
+	cterm := make(chan os.Signal)
+	signal.Notify(cint, os.Interrupt, syscall.SIGINT)
+	signal.Notify(cterm, os.Interrupt, syscall.SIGTERM)
+	select {
+	case _ = <-cint:
+	case _ = <-cterm:
+	}
+}
diff --git a/common/hex.go b/common/hex.go
new file mode 100644
index 0000000..f5aa7ed
--- /dev/null
+++ b/common/hex.go
@@ -0,0 +1,18 @@
+package common
+
+import (
+	"encoding/hex"
+)
+
+func NormalizeHex(s string) (string, error) {
+	if len(s) >= 2 {
+		if s[:2] == "0x" {
+			s = s[2:]
+		}
+	}
+	r, err := hex.DecodeString(s)
+	if err != nil {
+		return "", err
+	}
+	return hex.EncodeToString(r), nil
+}
diff --git a/event/nats/nats.go b/event/nats/nats.go
new file mode 100644
index 0000000..a6ebe06
--- /dev/null
+++ b/event/nats/nats.go
@@ -0,0 +1,105 @@
+package nats
+
+import (
+	"context"
+	"encoding/json"
+
+	nats "github.com/nats-io/nats.go"
+	"github.com/nats-io/nats.go/jetstream"
+
+	"git.defalsify.org/vise.git/logging"
+
+	geEvent "github.com/grassrootseconomics/eth-tracker/pkg/event"
+
+	"git.grassecon.net/term/event"
+)
+
+const (
+	evGive = "TRACKER.FAUCET_GIVE"
+	evReg = "TRACKER.CUSTODIAL_REGISTRATION"
+)
+
+var (
+	logg = logging.NewVanilla().WithDomain("nats")
+)
+
+type NatsSubscription struct {
+	*event.Router
+	ctx context.Context
+	conn *nats.Conn
+	js jetstream.JetStream
+	cs jetstream.Consumer
+	cctx jetstream.ConsumeContext
+}
+
+func NewNatsSubscription() *NatsSubscription {
+	return &NatsSubscription{}
+}
+
+func(n *NatsSubscription) Connect(ctx context.Context, connStr string) error {
+	var err error
+
+	n.conn, err = nats.Connect(connStr)
+	if err != nil {
+		return err
+	}
+	n.js, err = jetstream.New(n.conn)
+	if err != nil {
+		return err
+	}
+	n.cs, err = n.js.OrderedConsumer(ctx, "TRACKER", jetstream.OrderedConsumerConfig{
+		//FilterSubjects: []string{"TRACKER.*"},
+	})
+	if err != nil {
+		return err
+	}
+
+	n.ctx = ctx
+	n.cctx, err = n.cs.Consume(n.handleEvent)
+	if err != nil {
+		return err		
+	}
+
+	return nil
+}
+
+func(n *NatsSubscription) Close() error {
+	n.cctx.Stop()
+	select {
+	case <-n.cctx.Closed():
+		n.conn.Close()
+	}
+	return nil
+}
+
+func fail(m jetstream.Msg) {
+	err := m.Nak()
+	if err != nil {
+		logg.Errorf("nats nak fail", "err", err)
+	}
+}
+
+func(n *NatsSubscription) handleEvent(m jetstream.Msg) {
+	var ev geEvent.Event
+
+	logg.Tracef("have msg", "err", m)
+	b := m.Data()
+	err := json.Unmarshal(b, &ev)
+	if err != nil {
+		logg.Errorf("nats msg deserialize fail", "err", err)
+		fail(m)
+		return
+	}
+	err = n.Route(&ev)
+	if err != nil {
+		logg.Errorf("handler route fail", "err", err)
+		fail(m)
+		return
+	}
+	err = m.Ack()
+//	err = m.DoubleAck(n.ctx)
+	if err != nil {
+		logg.Errorf("ack fail", "err", err)
+		panic("ack fail")
+	}
+}
diff --git a/event/route.go b/event/route.go
new file mode 100644
index 0000000..cf61b66
--- /dev/null
+++ b/event/route.go
@@ -0,0 +1,12 @@
+package event
+
+import (
+	geEvent "github.com/grassrootseconomics/eth-tracker/pkg/event"
+)
+
+type Router struct {
+}
+
+func(r *Router) Route(ev *geEvent.Event) error {
+	return nil
+}
diff --git a/event/sub.go b/event/sub.go
new file mode 100644
index 0000000..e754ac6
--- /dev/null
+++ b/event/sub.go
@@ -0,0 +1,12 @@
+package event
+
+import (
+	"context"
+	"io"
+)
+
+type Subscription interface {
+	io.Closer
+	Connect(ctx context.Context, connStr string) error
+	Next() error
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..5f87a3c
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,19 @@
+module git.grassecon.net/term
+
+go 1.23.2
+
+require (
+	git.defalsify.org/vise.git v0.2.0
+	github.com/grassrootseconomics/eth-tracker v1.3.0-rc
+	github.com/nats-io/nats.go v1.37.0
+)
+
+require (
+	github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c // indirect
+	github.com/klauspost/compress v1.17.2 // indirect
+	github.com/nats-io/nkeys v0.4.7 // indirect
+	github.com/nats-io/nuid v1.0.1 // indirect
+	golang.org/x/crypto v0.26.0 // indirect
+	golang.org/x/sys v0.24.0 // indirect
+	golang.org/x/text v0.17.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..0bb3eb0
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,20 @@
+git.defalsify.org/vise.git v0.2.0 h1:X2ZgiGRq4C+9qOlDMP0b/oE5QHjVQNT4aEFZB88ST0Q=
+git.defalsify.org/vise.git v0.2.0/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
+github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c h1:H9Nm+I7Cg/YVPpEV1RzU3Wq2pjamPc/UtHDgItcb7lE=
+github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c/go.mod h1:rGod7o6KPeJ+hyBpHfhi4v7blx9sf+QsHsA7KAsdN6U=
+github.com/grassrootseconomics/eth-tracker v1.3.0-rc h1:iYe2rwCBrU5O8x0+HSJRjcPT1h68k/uGd3i/cJJQuTQ=
+github.com/grassrootseconomics/eth-tracker v1.3.0-rc/go.mod h1:rLXM5u8FDHnMEdah8ACgo/wfawu4o2sljHGkky2rQKE=
+github.com/klauspost/compress v1.17.2 h1:RlWWUY/Dr4fL8qk9YG7DTZ7PDgME2V4csBXA8L/ixi4=
+github.com/klauspost/compress v1.17.2/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/nats-io/nats.go v1.37.0 h1:07rauXbVnnJvv1gfIyghFEo6lUcYRY0WXc3x7x0vUxE=
+github.com/nats-io/nats.go v1.37.0/go.mod h1:Ubdu4Nh9exXdSz0RVWRFBbRfrbSxOYd26oF0wkWclB8=
+github.com/nats-io/nkeys v0.4.7 h1:RwNJbbIdYCoClSDNY7QVKZlyb/wfT6ugvFCiKy6vDvI=
+github.com/nats-io/nkeys v0.4.7/go.mod h1:kqXRgRDPlGy7nGaEDMuYzmiJCIAAWDK0IMBtDmGD0nc=
+github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
+github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
+golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
+golang.org/x/crypto v0.26.0/go.mod h1:GY7jblb9wI+FOo5y8/S2oY4zWP07AkOJ4+jxCqdqn54=
+golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
+golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
+golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
diff --git a/handler/error.go b/handler/error.go
new file mode 100644
index 0000000..66d96e5
--- /dev/null
+++ b/handler/error.go
@@ -0,0 +1,9 @@
+package handler
+
+import (
+	"fmt"
+)
+
+var (
+	ErrInvalidPayload = fmt.Errorf("Invalid event payload")
+)
diff --git a/handler/reg.go b/handler/reg.go
new file mode 100644
index 0000000..5abbd11
--- /dev/null
+++ b/handler/reg.go
@@ -0,0 +1,26 @@
+package handler
+
+import (
+	"git.defalsify.org/vise.git/db"
+
+	"git.grassecon.net/term/common"
+	"git.grassecon.net/term/lookup"
+)
+
+func HandleEvReg(store db.Db, payload map[string]any) error {
+	var err error
+	address, ok := payload["address"].(string)
+	if !ok {
+		return ErrInvalidPayload
+	}
+	address, err = common.NormalizeHex(address)
+	if err != nil {
+		return err
+	}
+	sessionId, err := lookup.GetSessionIdByAddress(store, address)
+	if err != nil {
+		return err
+	}
+	_ = sessionId
+	return nil
+}
diff --git a/lookup/db.go b/lookup/db.go
new file mode 100644
index 0000000..3accd45
--- /dev/null
+++ b/lookup/db.go
@@ -0,0 +1,10 @@
+package lookup
+
+import (
+	"git.defalsify.org/vise.git/db"
+)
+
+func GetSessionIdByAddress(store db.Db, address string) (string, error) {
+	var r string
+	return r, nil
+}