bot: enable simple auth workflow

This isn't good enough yet. Needs:
* to save the authorization for restarts
* more permission scopes
* permanent auth instead of an hour's auth

.gitignore

@@ -206,3 +206,4 @@ $RECYCLE.BIN/
 /beebot
 /cmd/beebot/beebot
 beebot.db
+run.sh

cmd/beebot/main.go

@@ -2,12 +2,66 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"log"
+	"math/rand"
+	"net/http"
+	"strconv"
+
+	"github.com/jzelinskie/geddit"
 )
 
 const version = 1.0
 
+var clientID = flag.String("id", "", "Client ID")
+var clientSecret = flag.String("secret", "", "Client Secret")
+var baseAddr = flag.String("url", "127.0.0.1:9595", "Base address")
+
+var o *geddit.OAuthSession
+
 func main() {
 	flag.Parse()
 	log.Printf("BeeBot v%.2f", version)
+
+	var err error
+
+	o, err = geddit.NewOAuthSession(
+		*clientID,
+		*clientSecret,
+		"BeeBot",
+		fmt.Sprintf("http://%s/cb", *baseAddr),
+	)
+	if err != nil {
+		log.Fatal(1, err)
+	}
+
+	state := strconv.Itoa(rand.Intn(10000) * 1000)
+	url := o.AuthCodeURL(state, []string{"identity read edit"})
+	log.Printf("Visit %s to obtain auth code", url)
+
+	http.HandleFunc("/cb", mkCb(state))
+	log.Fatal(http.ListenAndServe(*baseAddr, nil))
+
+}
+
+func mkCb(startState string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		state := r.URL.Query().Get("state")
+		code := r.URL.Query().Get("code")
+		if state != startState {
+			log.Fatalf("Unexpected state, %s != %s", startState, state)
+		}
+
+		err := o.CodeAuth(code)
+		if err != nil {
+			log.Fatal(2, err)
+		}
+
+		me, err := o.AboutRedditor("_beebot_")
+		if err != nil {
+			log.Fatal(3, err)
+		}
+
+		log.Printf("%+v", me)
+	}
 }

go.mod

@@ -1,3 +1,11 @@
 module code.chrissexton.org/cws/BeeBot
 
 go 1.13
+
+require (
+	github.com/beefsack/go-rate v0.0.0-20180408011153-efa7637bb9b6 // indirect
+	github.com/google/go-querystring v1.0.0 // indirect
+	github.com/jzelinskie/geddit v0.0.0-20190913104144-95ef6806b073
+	golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e // indirect
+	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
+)

go.sum

@@ -0,0 +1,22 @@
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/beefsack/go-rate v0.0.0-20180408011153-efa7637bb9b6 h1:KXlsf+qt/X5ttPGEjR0tPH1xaWWoKBEg9Q1THAj2h3I=
+github.com/beefsack/go-rate v0.0.0-20180408011153-efa7637bb9b6/go.mod h1:6YNgTHLutezwnBvyneBbwvB8C82y3dcoOj5EQJIdGXA=
+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
+github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
+github.com/jzelinskie/geddit v0.0.0-20190913104144-95ef6806b073 h1:5SmVkj0GZ8GU4eUF6JOhwZj4GeCxPphxTdZK07R5Q1U=
+github.com/jzelinskie/geddit v0.0.0-20190913104144-95ef6806b073/go.mod h1:KiUhpHWSO6xCSPYKhRXa1LDLtbxZKaFH4NINTP3Lm2Q=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e h1:3G+cUijn7XD+S4eJFddp53Pv7+slrESplyjG25HgL+k=
+golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
+golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d h1:TzXSXBo42m9gQenoE3b9BGiEpg5IG2JkU5FkPIawgtw=
+golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=