package csvimporter

import (
	"context"
	"fmt"

	"catalogue.midpdsa.com/src/db/catalogue"
	"github.com/jackc/pgx/v5/pgtype"
)

func (imp *Importer) ImportPagidSensor(filename string) (ImportResult, error) {
	result := ImportResult{Table: "brake_brand_specs"}

	records, err := imp.readCSVSeparator(filename, '|')
	if err != nil {
		return result, fmt.Errorf("failed to read CSV: %w", err)
	}
	if len(records) < 2 {
		return result, fmt.Errorf("no data rows in CSV")
	}

	ctx := context.Background()

	vehicleTypeID, err := imp.findOrCreateVehicleType(ctx, "Ligero")
	if err != nil {
		return result, fmt.Errorf("failed to get vehicle type: %w", err)
	}

	brakeBrandID, err := imp.findOrCreateBrakeBrand(ctx, "Hella-Pagid")
	if err != nil {
		return result, fmt.Errorf("failed to get brake brand: %w", err)
	}

	headerMap := make(map[string]int)
	for idx, col := range records[0] {
		headerMap[normalizeHeaderKey(col)] = idx
	}

	get := func(row []string, key string) string {
		idx, ok := headerMap[normalizeHeaderKey(key)]
		if !ok || idx >= len(row) {
			return ""
		}
		return row[idx]
	}

	var errorRows []ErrorRow

	for i, row := range records[1:] {
		rowNum := i + 2
		partNumber := get(row, "partnumber")
		make := get(row, "make")
		position := get(row, "position")
		product := get(row, "product")
		size := get(row, "size")

		if partNumber == "" || partNumber == "MISSING" {
			result.Errors++
			errorRows = append(errorRows, ErrorRow{Row: row, Error: "Missing part number", RowNum: rowNum})
			continue
		}
		if make == "" || make == "MISSING" {
			result.Errors++
			errorRows = append(errorRows, ErrorRow{Row: row, Error: "Missing make", RowNum: rowNum})
			continue
		}

		modelYearID, err := imp.findOrCreateVehicleModelYear(ctx, make, "Universal", vehicleTypeID)
		if err != nil {
			result.Errors++
			errorRows = append(errorRows, ErrorRow{Row: row, Error: fmt.Sprintf("Failed to find/create vehicle: %v", err), RowNum: rowNum})
			continue
		}

		pos := imp.parsePosition(position)

		vehicleAttrs := size
		if vehicleAttrs == "" {
			vehicleAttrs = product
		}

		if err := imp.insertBrakeBrandSpec(ctx, catalogue.CreateBrakeBrandSpecParams{
			PartNumber:             pgtype.Text{String: partNumber, Valid: true},
			Product:                pgtype.Text{String: product, Valid: product != ""},
			Serie:                  pgtype.Text{},
			Tier:                   pgtype.Text{},
			Quantity:               pgtype.Int4{Int32: 1, Valid: true},
			Position:               pgtype.Text{String: pos, Valid: pos != ""},
			Fmsi:                   pgtype.Text{},
			IncludesHardware:       pgtype.Text{String: "No", Valid: true},
			ImageProduct:           pgtype.Text{},
			VehicleAttrs:           pgtype.Text{String: vehicleAttrs, Valid: vehicleAttrs != ""},
			ImageProductDimentions: pgtype.Text{},
			TechnicalSheet:         pgtype.Text{},
			FkIdVehicleModelYear:   pgtype.Int4{Int32: modelYearID, Valid: true},
			FkIdBrakeBrand:         pgtype.Int4{Int32: brakeBrandID, Valid: true},
			Years:                  pgtype.Text{},
			YearsRange:             pgtype.Text{},
		}, &result); err != nil {
			result.Errors++
			errorRows = append(errorRows, ErrorRow{Row: row, Error: fmt.Sprintf("Database insert failed: %v", err), RowNum: rowNum})
			continue
		}

		if i%100 == 0 {
			fmt.Printf("  Pagid Sensor: %d rows processed\n", i)
		}
	}

	if len(errorRows) > 0 {
		err = imp.writeErrorCSV("pagid_sensor_errors.csv", records[0], errorRows)
		if err != nil {
			fmt.Printf("  Warning: failed to write error CSV: %v\n", err)
		}
	}

	return result, nil
}