package dbx_test

import (
	"context"
	"errors"
	"testing"

	"git.codelab.vc/pkg/dbx"
	"git.codelab.vc/pkg/dbx/dbxtest"
	"github.com/jackc/pgx/v5"
)

type scanRow struct {
	ID   int    `db:"id"`
	Name string `db:"name"`
}

func TestCollect(t *testing.T) {
	c := dbxtest.NewTestCluster(t)
	ctx := context.Background()

	_, err := c.Exec(ctx, `CREATE TEMPORARY TABLE test_collect (id int, name text)`)
	if err != nil {
		t.Fatal(err)
	}
	_, err = c.Exec(ctx, `INSERT INTO test_collect (id, name) VALUES (1, 'alice'), (2, 'bob')`)
	if err != nil {
		t.Fatal(err)
	}

	rows, err := dbx.Collect[scanRow](ctx, c, `SELECT id, name FROM test_collect ORDER BY id`)
	if err != nil {
		t.Fatal(err)
	}
	if len(rows) != 2 {
		t.Fatalf("expected 2 rows, got %d", len(rows))
	}
	if rows[0].ID != 1 || rows[0].Name != "alice" {
		t.Errorf("row 0: got %+v", rows[0])
	}
	if rows[1].ID != 2 || rows[1].Name != "bob" {
		t.Errorf("row 1: got %+v", rows[1])
	}
}

func TestCollectOne(t *testing.T) {
	c := dbxtest.NewTestCluster(t)
	ctx := context.Background()

	_, err := c.Exec(ctx, `CREATE TEMPORARY TABLE test_collect_one (id int, name text)`)
	if err != nil {
		t.Fatal(err)
	}
	_, err = c.Exec(ctx, `INSERT INTO test_collect_one (id, name) VALUES (1, 'alice')`)
	if err != nil {
		t.Fatal(err)
	}

	row, err := dbx.CollectOne[scanRow](ctx, c, `SELECT id, name FROM test_collect_one WHERE id = 1`)
	if err != nil {
		t.Fatal(err)
	}
	if row.ID != 1 || row.Name != "alice" {
		t.Errorf("got %+v", row)
	}
}

func TestCollectOneNoRows(t *testing.T) {
	c := dbxtest.NewTestCluster(t)
	ctx := context.Background()

	_, err := c.Exec(ctx, `CREATE TEMPORARY TABLE test_collect_norows (id int, name text)`)
	if err != nil {
		t.Fatal(err)
	}

	_, err = dbx.CollectOne[scanRow](ctx, c, `SELECT id, name FROM test_collect_norows`)
	if !errors.Is(err, pgx.ErrNoRows) {
		t.Errorf("expected pgx.ErrNoRows, got %v", err)
	}
}