package stats

import (
	"context"
	"regexp"
	"testing"
	"time"

	"github.com/DATA-DOG/go-sqlmock"
)

func TestSyncHydrogenTankCapacitiesCopiesAssetMasterData(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatal(err)
	}
	defer db.Close()
	updatedAt := time.Date(2026, 7, 21, 10, 0, 0, 0, time.Local)
	mock.ExpectQuery("FROM ln_asset_management\\.vehicle_info vi").
		WillReturnRows(sqlmock.NewRows([]string{"id", "vehicle_model_id", "vin", "plate", "brand", "model", "tank_capacity", "updated_at"}).
			AddRow(1001, 51, "LA9GG64L0NBAF4175", "浙F06618F", "feichi", "49吨牵引车头", 1400.0, updatedAt))
	mock.ExpectBegin()
	mock.ExpectExec(regexp.QuoteMeta("UPDATE vehicle_hydrogen_tank_capacity SET active=0 WHERE active=1")).
		WillReturnResult(sqlmock.NewResult(0, 20))
	mock.ExpectExec(regexp.QuoteMeta("INSERT INTO vehicle_hydrogen_tank_capacity(")).
		WithArgs("LA9GG64L0NBAF4175", int64(1001), sqlmock.AnyArg(), "浙F06618F", "feichi", "49吨牵引车头", 1400.0, sqlmock.AnyArg()).
		WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectQuery(regexp.QuoteMeta("SELECT COUNT(*) FROM vehicle_hydrogen_tank_capacity WHERE active=0")).
		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(0))
	mock.ExpectCommit()

	result, err := SyncHydrogenTankCapacities(context.Background(), db, "ln_asset_management")
	if err != nil {
		t.Fatal(err)
	}
	if result.Read != 1 || result.Written != 1 || result.Deactivated != 0 {
		t.Fatalf("result=%+v", result)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

func TestSyncHydrogenTankCapacitiesRejectsUnsafeSchema(t *testing.T) {
	db, _, err := sqlmock.New()
	if err != nil {
		t.Fatal(err)
	}
	defer db.Close()
	if _, err := SyncHydrogenTankCapacities(context.Background(), db, "ln_asset_management;DROP"); err == nil {
		t.Fatal("unsafe schema accepted")
	}
}

func TestLoadHydrogenTankCapacitiesBuildsVINMap(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatal(err)
	}
	defer db.Close()
	mock.ExpectQuery("SELECT UPPER\\(TRIM\\(vin\\)\\),tank_capacity_l").
		WillReturnRows(sqlmock.NewRows([]string{"vin", "capacity"}).
			AddRow("LA9GG64L0NBAF4175", 1400.0).
			AddRow("LB9A32A24R0LS1037", 380.0))
	capacities, err := LoadHydrogenTankCapacities(context.Background(), db)
	if err != nil {
		t.Fatal(err)
	}
	if capacities["LA9GG64L0NBAF4175"] != 1400 || capacities["LB9A32A24R0LS1037"] != 380 {
		t.Fatalf("capacities=%v", capacities)
	}
}