package excelparse

import "errors"

var (
	ErrUnknownFormat = errors.New("unrecognized excel format; supported: 秒账, 领星")
	ErrEmptyFile     = errors.New("excel file has no data rows")
	ErrUnsupportedExt = errors.New("unsupported file extension; use .xls or .xlsx")
)

type ParsedProduct struct {
	ProductName   string
	Spec          string
	Color         string
	UnitRolls     int64
	StockQuantity string
	CostPrice     string
	SalesPrice    string
	Remark        string
}

type ParseResult struct {
	Products   []ParsedProduct
	ParserName string
	SkippedRows int
}

// FormatParser transforms raw spreadsheet rows into structured products.
// Each competitor format (秒账, 领星, etc.) implements this interface.
type FormatParser interface {
	Name() string
	Match(headers []string) bool
	ParseRows(headers []string, rows [][]string) (*ParseResult, error)
}