package postgres

import (
	"context"
	"errors"
	"testing"

	"cryptoHermes/internal/entity"

	"github.com/pashagolub/pgxmock/v4"
	"github.com/stretchr/testify/require"
)

func TestOpenInterestRepo_UpsertMany_HappyPath(t *testing.T) {
	mock, err := pgxmock.NewPool()
	require.NoError(t, err)
	defer mock.Close()

	mock.ExpectBegin()
	mock.ExpectExec("INSERT INTO open_interest").
		WithArgs("binance", "BTCUSDT", "1h", int64(1), "10000", "5000000").
		WillReturnResult(pgxmock.NewResult("INSERT", 1))
	mock.ExpectCommit()
	mock.ExpectRollback()

	r := &OpenInterestRepo{pool: mock}
	err = r.UpsertMany(context.Background(), []entity.OpenInterest{{
		Source: "binance", Symbol: "BTCUSDT", Period: "1h",
		Timestamp: 1, OpenInterest: "10000", OpenInterestValue: "5000000",
	}})
	require.NoError(t, err)
	require.NoError(t, mock.ExpectationsWereMet())
}

func TestOpenInterestRepo_UpsertMany_SkipsEmpty(t *testing.T) {
	mock, err := pgxmock.NewPool()
	require.NoError(t, err)
	defer mock.Close()

	mock.ExpectBegin()
	mock.ExpectCommit()
	mock.ExpectRollback()

	r := &OpenInterestRepo{pool: mock}
	err = r.UpsertMany(context.Background(), []entity.OpenInterest{
		{OpenInterest: ""},      // 空 OI 跳过
		{OpenInterest: "1", Timestamp: 0}, // 空时间戳跳过
	})
	require.NoError(t, err)
	require.NoError(t, mock.ExpectationsWereMet())
}

func TestOpenInterestRepo_UpsertMany_ExecError(t *testing.T) {
	mock, err := pgxmock.NewPool()
	require.NoError(t, err)
	defer mock.Close()

	mock.ExpectBegin()
	mock.ExpectExec("INSERT INTO open_interest").
		WithArgs(pgxmock.AnyArg(), pgxmock.AnyArg(), pgxmock.AnyArg(), pgxmock.AnyArg(), pgxmock.AnyArg(), pgxmock.AnyArg()).
		WillReturnError(errors.New("disk full"))
	mock.ExpectRollback()

	r := &OpenInterestRepo{pool: mock}
	err = r.UpsertMany(context.Background(), []entity.OpenInterest{{
		Symbol: "BTCUSDT", Period: "1h", Timestamp: 1, OpenInterest: "1",
	}})
	require.Error(t, err)
	require.Contains(t, err.Error(), "upsert oi")
	require.NoError(t, mock.ExpectationsWereMet())
}

func TestOpenInterestRepo_FindRecent_HappyPath(t *testing.T) {
	mock, err := pgxmock.NewPool()
	require.NoError(t, err)
	defer mock.Close()

	rows := mock.NewRows([]string{"source", "symbol", "period", "timestamp", "open_interest", "open_interest_value"}).
		AddRow("binance", "BTCUSDT", "1h", int64(2), "10100", "5050000").
		AddRow("binance", "BTCUSDT", "1h", int64(1), "10000", "5000000")

	mock.ExpectQuery("SELECT source, symbol, period").
		WithArgs("BTCUSDT", "1h", 200).
		WillReturnRows(rows)

	r := &OpenInterestRepo{pool: mock}
	got, err := r.FindRecent(context.Background(), "BTCUSDT", "1h", 200)
	require.NoError(t, err)
	require.Len(t, got, 2)
	require.Equal(t, int64(1), got[0].Timestamp, "升序")
	require.NoError(t, mock.ExpectationsWereMet())
}

func TestOpenInterestRepo_FindRecent_QueryError(t *testing.T) {
	mock, err := pgxmock.NewPool()
	require.NoError(t, err)
	defer mock.Close()

	mock.ExpectQuery("SELECT source, symbol, period").
		WithArgs("BTCUSDT", "1h", 100).
		WillReturnError(errors.New("timeout"))

	r := &OpenInterestRepo{pool: mock}
	_, err = r.FindRecent(context.Background(), "BTCUSDT", "1h", 0)
	require.Error(t, err)
	require.NoError(t, mock.ExpectationsWereMet())
}