From b98574f0be3a470368083d03ef1624f69133e550 Mon Sep 17 00:00:00 2001
From: Christine Dodrill <me@christine.website>
Date: Tue, 29 Aug 2017 11:06:00 -0700
Subject: [PATCH] vyvanse: add command top10

---
 cmd/vyvanse/top10.go  | 59 +++++++++++++++++++++++++++++++++++++++++++
 internal/dao/users.go | 42 ++++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 cmd/vyvanse/top10.go

diff --git a/cmd/vyvanse/top10.go b/cmd/vyvanse/top10.go
new file mode 100644
index 0000000..50e9537
--- /dev/null
+++ b/cmd/vyvanse/top10.go
@@ -0,0 +1,59 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strconv"
+
+	"git.xeserv.us/xena/vyvanse/internal/dao"
+	"github.com/bwmarrin/discordgo"
+	"github.com/olekukonko/tablewriter"
+	opentracing "github.com/opentracing/opentracing-go"
+)
+
+func top10(us *dao.Users) func(context.Context, *discordgo.Session, *discordgo.Message, []string) error {
+	return func(ctx context.Context, s *discordgo.Session, m *discordgo.Message, parv []string) error {
+		sp, ctx := opentracing.StartSpanFromContext(ctx, "top10")
+		defer sp.Finish()
+
+		users, err := us.Top10(ctx)
+		if err != nil {
+			return err
+		}
+
+		buf := &bytes.Buffer{}
+
+		table := tablewriter.NewWriter(buf)
+		table.SetHeader([]string{"Rank", "Nick", "Score"})
+
+		for i, u := range users {
+			apd := []string{}
+			apd = append(apd, strconv.Itoa(i+1))
+
+			ch, err := s.Channel(m.ChannelID)
+			if err != nil {
+				return err
+			}
+
+			mem, err := s.GuildMember(ch.GuildID, u.DiscordID)
+			if err != nil {
+				return err
+			}
+
+			apd = append(apd, mem.Nick, strconv.Itoa(u.Score))
+
+			table.Append(apd)
+		}
+
+		table.Render()
+
+		txt := fmt.Sprintf("```\n%s\n```", buf)
+		_, err = s.ChannelMessageSend(m.ChannelID, txt)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	}
+}
diff --git a/internal/dao/users.go b/internal/dao/users.go
index 16dda0e..d37a549 100644
--- a/internal/dao/users.go
+++ b/internal/dao/users.go
@@ -2,6 +2,7 @@ package dao
 
 import (
 	"context"
+	"database/sql"
 
 	"git.xeserv.us/xena/gorqlite"
 	"github.com/opentracing/opentracing-go"
@@ -79,3 +80,44 @@ func (u *Users) IncScore(ctx context.Context, discordID string) error {
 
 	return nil
 }
+
+type User struct {
+	ID        int    `json:"id"`
+	DiscordID string `json:"discord_id"`
+	Score     int    `json:"score"`
+}
+
+func (u *Users) Top10(ctx context.Context) ([]User, error) {
+	sp, ctx := opentracing.StartSpanFromContext(ctx, "users.top10")
+	defer sp.Finish()
+
+	qr, err := u.conn.QueryOne("SELECT (id, discord_id, score) FROM users WHERE score > 0 ORDER BY score LIMIT 10")
+	if err != nil {
+		sp.LogFields(splog.Error(err))
+	}
+
+	if qr.Err != nil {
+		sp.LogFields(splog.Error(qr.Err))
+		return nil, qr.Err
+	}
+
+	var result []User
+
+	if qr.NumRows() == 0 {
+		sp.LogFields(splog.Error(sql.ErrNoRows))
+		return nil, sql.ErrNoRows
+	}
+
+	for qr.Next() {
+		var u User
+		err = qr.Scan(&u.ID, &u.DiscordID, &u.Score)
+		if err != nil {
+			sp.LogFields(splog.Error(err))
+			return nil, err
+		}
+
+		result = append(result, u)
+	}
+
+	return result, nil
+}