From 86063b5a64040788b1e4c67d3a975a50f1772016 Mon Sep 17 00:00:00 2001
From: Christine Dodrill <me@christine.website>
Date: Tue, 29 Aug 2017 09:49:27 -0700
Subject: [PATCH] add database interactions

---
 cmd/vyvanse/main.go   | 31 ++++++++++++++++++++++
 internal/dao/users.go | 62 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 internal/dao/users.go

diff --git a/cmd/vyvanse/main.go b/cmd/vyvanse/main.go
index f56e06d..9f8f424 100644
--- a/cmd/vyvanse/main.go
+++ b/cmd/vyvanse/main.go
@@ -6,7 +6,10 @@ import (
 	"log"
 	"net/http"
 
+	"git.xeserv.us/xena/gorqlite"
 	"git.xeserv.us/xena/vyvanse/bot"
+	"git.xeserv.us/xena/vyvanse/internal/dao"
+
 	"github.com/Xe/ln"
 	"github.com/bwmarrin/discordgo"
 	_ "github.com/joho/godotenv/autoload"
@@ -24,6 +27,7 @@ var (
 	pesterChannel = flag.String("upload-channel", "", "Discord channel ID to upload and announce new XKCD items to")
 	token         = flag.String("token", "", "discord bot token")
 	zipkinURL     = flag.String("zipkin-url", "", "URL for Zipkin traces")
+	databaseURL   = flag.String("database-url", "http://", "URL for database (rqlite)")
 )
 
 func main() {
@@ -35,6 +39,28 @@ func main() {
 		log.Fatal(err)
 	}
 
+	db, err := gorqlite.Open(*databaseURL)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	us := dao.NewUsers(db)
+
+	type migrator interface {
+		Migrate(ctx context.Context) error
+	}
+	mgs := []migrator{us}
+
+	sp, ctx := opentracing.StartSpan("migrations")
+	for _, mg := range mgs {
+		err := mg.Migrate(ctx)
+		if err != nil {
+			sp.Finish()
+			ln.FatalErr(ctx, err)
+		}
+	}
+	sp.Finish()
+
 	c := cron.New()
 
 	comic, err := xk.Latest()
@@ -111,6 +137,11 @@ func main() {
 		if err != nil {
 			ln.Error(context.Background(), err, ln.F{"action": "run commandSet on message"})
 		}
+
+		_, err = us.Insert(context.Background(), m.Author.ID)
+		if err != nil {
+			ln.Error(context.Background(), err, ln.F{"action": "insert user into database"})
+		}
 	})
 
 	// Open the websocket and begin listening.
diff --git a/internal/dao/users.go b/internal/dao/users.go
new file mode 100644
index 0000000..999c003
--- /dev/null
+++ b/internal/dao/users.go
@@ -0,0 +1,62 @@
+package dao
+
+import (
+	"context"
+
+	"git.xeserv.us/xena/gorqlite"
+	"github.com/opentracing/opentracing-go"
+	splog "github.com/opentracing/opentracing-go/log"
+)
+
+type Users struct {
+	conn gorqlite.Connection
+}
+
+func NewUsers(conn gorqlite.Connection) *Users {
+	return &Users{conn: conn}
+}
+
+func (u *Users) Migrate(ctx context.Context) error {
+	sp, ctx := opentracing.StartSpanFromContext(ctx, "users.migrate")
+	defer sp.Finish()
+
+	migrationDDL := []string{
+		`CREATE TABLE IF NOT EXISTS users(id INTEGER PRIMARY KEY, discord_id UNIQUE TEXT, score INTEGER)`,
+	}
+
+	res, err := u.conn.Write(migrationDDL)
+	if err != nil {
+		sp.LogFields(splog.Error(err))
+		return err
+	}
+
+	for i, re := range res {
+		if re.Err != nil {
+			sp.LogFields(splog.Error(err))
+			return err
+		}
+
+		sp.LogFields(splog.Int("migration.step", i), splog.Float64("timing", re.Timing), splog.Int64("rows.affected", re.RowsAffected))
+	}
+
+	return nil
+}
+
+func (u *Users) Insert(ctx context.Context, discordID string) (int64, error) {
+	sp, ctx := opentracing.StartSpanFromContext(ctx, "users.insert")
+	defer sp.Finish()
+	sp.LogFields(splog.String("discord.id", discordID))
+
+	re, err := u.conn.WriteOne(gorqlite.NewPreparedStatement("INSERT INTO users (discord_id) VALUES (%s)").Bind(discordID))
+	if err != nil {
+		sp.LogFields(splog.Error(err))
+		return -1, err
+	}
+
+	if re.Err != nil {
+		sp.LogFields(splog.Error(re.Err))
+		return -1, err
+	}
+
+	return re.LastInsertID, nil
+}