package iot_excelize

import (
	"strings"

	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/xuri/excelize/v2"
)

// ApplyHeaderColumnsTextStyle sets all columns with non-empty first-row headers
// in the active sheet to Excel text format.
func ApplyHeaderColumnsTextStyle(f *excelize.File) error {
	if f == nil {
		return gerror.New("Excel文件不能为空")
	}

	sheetName := f.GetSheetName(f.GetActiveSheetIndex())
	if sheetName == "" {
		sheets := f.GetSheetList()
		if len(sheets) == 0 {
			return gerror.New("Excel文件没有工作表")
		}
		sheetName = sheets[0]
	}

	rows, err := f.GetRows(sheetName)
	if err != nil {
		return err
	}
	if len(rows) == 0 || len(rows[0]) == 0 {
		return gerror.New("Excel文件表头为空")
	}

	styleID, err := f.NewStyle(&excelize.Style{NumFmt: 49})
	if err != nil {
		return err
	}

	for i, header := range rows[0] {
		if strings.TrimSpace(header) == "" {
			continue
		}
		colName, err := excelize.ColumnNumberToName(i + 1)
		if err != nil {
			return err
		}
		if err = f.SetColStyle(sheetName, colName, styleID); err != nil {
			return err
		}
	}

	return nil
}