package stats

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

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

func TestSyncHydrogenEnergyParametersCopiesAssetModelCapacity(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatal(err)
	}
	defer db.Close()
	updatedAt := time.Date(2026, 8, 26, 10, 0, 0, 0, time.Local)
	mock.ExpectQuery("FROM ln_asset_management\\.vehicle_info vi").
		WillReturnRows(sqlmock.NewRows([]string{"id", "vin", "battery_capacity", "updated_at"}).
			AddRow(1001, "LB9A32A24R0LS1037", 21.04, updatedAt).
			AddRow(1002, "LB9A52124P0LS1001", 58.73, updatedAt))
	mock.ExpectBegin()
	mock.ExpectExec(regexp.QuoteMeta("UPDATE vehicle_hydrogen_energy_parameter")).
		WithArgs(hydrogenEnergyAssetSourceNote).
		WillReturnResult(sqlmock.NewResult(0, 2))
	mock.ExpectExec(regexp.QuoteMeta("INSERT INTO vehicle_hydrogen_energy_parameter(")).
		WithArgs("LB9A32A24R0LS1037", 21.04, hydrogenEnergyAssetConfirmedBy, hydrogenEnergyAssetSourceNote, hydrogenEnergyAssetEffectiveAt).
		WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectExec(regexp.QuoteMeta("INSERT INTO vehicle_hydrogen_energy_parameter(")).
		WithArgs("LB9A52124P0LS1001", 58.73, hydrogenEnergyAssetConfirmedBy, hydrogenEnergyAssetSourceNote, hydrogenEnergyAssetEffectiveAt).
		WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectQuery(regexp.QuoteMeta("SELECT COUNT(*)")).
		WithArgs(hydrogenEnergyAssetSourceNote).
		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(0))
	mock.ExpectCommit()

	result, err := SyncHydrogenEnergyParameters(context.Background(), db, "ln_asset_management")
	if err != nil {
		t.Fatal(err)
	}
	if result.Read != 2 || result.Written != 2 || result.Deactivated != 0 {
		t.Fatalf("result=%+v", result)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

func TestSyncHydrogenEnergyParametersKeepsNewestDuplicateVIN(t *testing.T) {
	db, mock, err := sqlmock.New()
	if err != nil {
		t.Fatal(err)
	}
	defer db.Close()
	oldTime := time.Date(2026, 8, 20, 10, 0, 0, 0, time.Local)
	newTime := oldTime.Add(24 * time.Hour)
	mock.ExpectQuery("FROM ln_asset_management\\.vehicle_info vi").
		WillReturnRows(sqlmock.NewRows([]string{"id", "vin", "battery_capacity", "updated_at"}).
			AddRow(1001, "LB9A32A24R0LS1037", 20.00, oldTime).
			AddRow(1002, "LB9A32A24R0LS1037", 21.04, newTime))
	mock.ExpectBegin()
	mock.ExpectExec(regexp.QuoteMeta("UPDATE vehicle_hydrogen_energy_parameter")).
		WithArgs(hydrogenEnergyAssetSourceNote).
		WillReturnResult(sqlmock.NewResult(0, 1))
	mock.ExpectExec(regexp.QuoteMeta("INSERT INTO vehicle_hydrogen_energy_parameter(")).
		WithArgs("LB9A32A24R0LS1037", 21.04, hydrogenEnergyAssetConfirmedBy, hydrogenEnergyAssetSourceNote, hydrogenEnergyAssetEffectiveAt).
		WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectQuery(regexp.QuoteMeta("SELECT COUNT(*)")).
		WithArgs(hydrogenEnergyAssetSourceNote).
		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(0))
	mock.ExpectCommit()

	result, err := SyncHydrogenEnergyParameters(context.Background(), db, "ln_asset_management")
	if err != nil {
		t.Fatal(err)
	}
	if result.Read != 2 || result.Written != 1 {
		t.Fatalf("result=%+v", result)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

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