package lineobj

import (
	"encoding/json"
	"fmt"
)

// SourceObject -
type SourceObject struct {
	Type    string `json:"type" cc:"type"`
	UserID  string `json:"userId" cc:"userId"`
	GroupID string `json:"groupId" cc:"groupId"`
}

// EventObject -
type EventObject struct {
	Source     *SourceObject          `json:"source" cc:"source"`
	Type       string                 `json:"type" cc:"type"`
	Timestamp  int64                  `json:"timestamp" cc:"timestamp"`
	ReplyToken string                 `json:"replyToken" cc:"replyToken"`
	Message    map[string]interface{} `json:"message" cc:"message"`
}

// HookEvent -
type HookEvent struct {
	Events []*EventObject `json:"events"`
}

// ParseWebhookBody -
func ParseWebhookBody(b []byte) *HookEvent {
	if len(b) == 0 {
		return nil
	}
	evt := &HookEvent{}
	err := json.Unmarshal(b, evt)
	if err != nil {
		return nil
	}
	return evt
}

// MessageEvent -
func MessageEvent(e *EventObject) {
	switch e.Type {
	case "message":
		// TODO
		break
	default:
		fmt.Printf("line webhook type not match (%v)", e.Type)
	}
}

func messageType(e *EventObject) {
	msg := e.Message
	mtype, ok := msg["type"]
	if !ok {
		return
	}

	if t, ok := mtype.(string); ok {
		switch t {
		case "text":
			// TODO
			break
		case "iamge":
			// TODO
			break
		}
	}
}