package model

import (
	"fmt"
	"sap-cds-search/cmd/database/table"
	"strings"

	"golang.org/x/text/cases"
	"golang.org/x/text/language"
)

type CDSViewFieldModel struct {
	table.CDSViewField
	DataTypeTitle  string
	FieldLengthOut string
	DescriptionOut string
}

type CDSViewModel struct {
	*table.CDSView
	StateTitle string
	Fields     *[]CDSViewFieldModel
}

var englishCases = cases.Title(language.English)

func GetCDSViewModel(TechnicalName string) (*CDSViewModel, error) {
	var model CDSViewModel

	cdsView, err := table.GetCDSView(TechnicalName)
	if err != nil {
		return nil, err
	}

	model.CDSView = cdsView

	model.StateTitle = englishCases.String(model.State)

	fields, err := table.GetCDSViewFields(TechnicalName)
	if err != nil {
		return nil, err
	}

	var fieldModel CDSViewFieldModel
	var fieldsModel []CDSViewFieldModel
	for _, field := range *fields {
		fieldModel.CDSViewField = field
		fieldModel.DataTypeTitle = englishCases.String(field.DataType)
		fieldModel.FieldLengthOut = strings.TrimLeft(field.FieldLength, "0")
		fieldModel.DescriptionOut = field.Description
		if fieldModel.DescriptionOut == "" {
			fieldModel.DescriptionOut = "-"
		}
		fieldsModel = append(fieldsModel, fieldModel)
	}

	model.Fields = &fieldsModel

	return &model, nil
}

func GetAllCDSViewModels() (*[]CDSViewModel, error) {
	cdsViewTechnicalNames, err := table.QueryAllCDSViewTechnicalNames()
	if err != nil {
		return nil, err
	}

	var cdsViewModels []CDSViewModel
	for _, cdsViewTechnicalName := range *cdsViewTechnicalNames {
		cdsViewModel, err := GetCDSViewModel(cdsViewTechnicalName)
		if err != nil {
			fmt.Println(err)
			continue
		}

		cdsViewModels = append(cdsViewModels, *cdsViewModel)
	}

	return &cdsViewModels, nil
}