package main

import "time"

type Attachment struct {
	Filename string `json:"filename"`
	Type     string `json:"type"` // "image", "video", "audio", "sticker", "document"
}

type Message struct {
	Timestamp   time.Time    `json:"timestamp"`
	Sender      string       `json:"sender"`      // empty for system messages
	Text        string       `json:"text"`
	Attachments []Attachment `json:"attachments"`
	IsSystem    bool         `json:"isSystem"`
}

type Conversation struct {
	ID              string    `json:"id"`
	Name            string    `json:"name"`
	Messages        []Message `json:"messages"`
	MessageCount    int       `json:"messageCount"`
	LastMessageDate time.Time `json:"lastMessageDate"`
}

type ConversationSummary struct {
	ID              string    `json:"id"`
	Name            string    `json:"name"`
	MessageCount    int       `json:"messageCount"`
	LastMessageDate time.Time `json:"lastMessageDate"`
}