package handlers

import (
	"os"
	"reflect"
	"strings"
	"testing"

	"github.com/danilsolovyov/doc-template/docx"
	"penahub.gitlab.yandexcloud.net/backend/templategen/templategen"
)

func TestGeneratorService(t *testing.T) {
	file, err := os.ReadFile("../assets/TestGeneratorService.docx")
	if err != nil {
		t.Error(err)
	}

	data := NewReqGeneratorService()

	// is filled by json.Unmarshal
	data.DocNumber = "2"
	data.Date = "13.05.2021"
	data.OrgName = `ООО ЛИГА ХОДЬБЫ "ЖЕНЬШЕНЬ" ПРИМОРСКОГО КРАЯ`
	data.OrgTaxNum = "999888111"
	data.Sum = "60 000 руб."
	data.Name = "Консультационные услуги"
	data.Amount = "2"
	data.Price = "1500"
	data.Sum = "3000"

	resultBytes, err := templategen.GenerateBytesFile(file, data)
	if err != nil {
		t.Error(err)
	}

	document := new(docx.Docx)
	err = document.ReadBytes(resultBytes)
	if err != nil {
		t.Error(err)
	}

	// _ = os.WriteFile("/tmp/out3.docx", resultBytes, 0644) // TODO delete

	checkAllFieldsPresent(t, document.GetContent(), data)
}

func checkAllFieldsPresent(t *testing.T, content string, data interface{}) {
	v := reflect.ValueOf(data)
	vt := v.Type()

	for i := 0; i < v.NumField(); i++ {
		field := v.Field(i)
		fieldName := vt.Field(i).Name
		fieldValue := field.Interface()

		switch x := fieldValue.(type) {
		case string:
			if !strings.Contains(content, x) {
				t.Errorf("missing value for '%s': '%s'", fieldName, x)
			}
		default:
			t.Error("unhandled field")
		}
	}
}