package seed

import (
	"context"
	"os"
	"testing"

	"booklib/internal/db"
	"booklib/internal/store"
)

func TestSeedOnlyWhenEmpty(t *testing.T) {
	url := os.Getenv("DATABASE_URL")
	if url == "" {
		t.Skip("DATABASE_URL not set")
	}
	ctx := context.Background()
	p, _ := db.Connect(ctx, url)
	if err := db.Migrate(ctx, p); err != nil {
		t.Fatal(err)
	}
	s := store.New(p)
	p.Exec(ctx, "DELETE FROM reading_progress; DELETE FROM books; DELETE FROM libraries; DELETE FROM users")
	if err := Admin(ctx, s, "admin", "pw12345"); err != nil {
		t.Fatal(err)
	}
	if err := Admin(ctx, s, "admin2", "pw12345"); err != nil { // 已有用户 → no-op
		t.Fatal(err)
	}
	n, _ := s.CountUsers(ctx)
	if n != 1 {
		t.Fatalf("want 1 user got %d", n)
	}
	u, err := s.GetUserByName(ctx, "admin")
	if err != nil || u.Role != "admin" {
		t.Fatalf("bad admin: %+v %v", u, err)
	}
	if err := Admin(ctx, s, "", ""); err != nil {
		t.Fatal("empty creds must no-op, got", err)
	}
}