package fire

import (
	"errors"

	"git.mokkon.com/sainw/server_helper.git/util"
)

// Payload defines the payload
type Payload struct {
	// document data
	data map[string]interface{}
}

func NewPayload(data map[string]interface{}) *Payload {
	return &Payload{data: data}
}

func (p Payload) getID() (string, error) {
	id := p.String("id")
	if id == "" {
		return "", errors.New("ID not found")
	}
	return id, nil
}

// Add adds data to existing data
func (p *Payload) Add(data map[string]interface{}) {
	for k, v := range data {
		p.data[k] = v
	}
}

// String returns string value of the field
// if the value type is not string, return blank string
func (pl *Payload) String(field string) string {
	value, ok := pl.data[field]
	if ok {
		str, isString := value.(string)
		if isString {
			return str
		}
	}
	return ""
}

// String returns string value of the field from payload
func (pl *Payload) Strings(field string) []string {
	value, ok := pl.data[field]
	if ok {
		return util.ToStrings(value)
	}
	return []string{}
}

// Value returns interface value of the field from payload
func (pl *Payload) Value(field string) interface{} {
	value, ok := pl.data[field]
	if ok {
		return value
	}
	return nil
}