/
main.go
51 lines (47 loc) · 1.1 KB
/
main.go
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package main
import (
"bufio"
"context"
"flag"
"fmt"
"log"
"os"
"strings"
"entgo.io/ent/dialect/sql"
"github.com/a8m/entraffle/ent"
"github.com/a8m/entraffle/ent/user"
_ "github.com/mattn/go-sqlite3"
)
var (
count = flag.Int("count", 5, "number of retweeters to choose")
filename = flag.String("filename", "retweeters", "name of the file holds the users who retweet ent")
)
func main() {
ctx := context.Background()
// Open a client and assume migration is managed by Atlas.
client, err := ent.Open("sqlite3", "file:ent.db?_fk=1")
if err != nil {
log.Fatalf("failed opening connection to sqlite: %v", err)
}
defer client.Close()
f, err := os.Open(*filename)
if err != nil {
log.Fatalf("failed opening file: %v", err)
}
defer f.Close()
for sr := bufio.NewScanner(f); sr.Scan(); {
client.User.Create().
SetName(strings.TrimSpace(sr.Text())).
ExecX(ctx)
}
names := client.User.Query().
Order(sql.OrderByRand()).
Unique(true).
Limit(*count).
Select(user.FieldName).
StringsX(ctx)
fmt.Println("Winners are:")
for i, n := range names {
fmt.Printf("%d. %s\n", i+1, n)
}
}