# @photon-ai/imessage-kit - LLM Integration Guide

> This file helps AI assistants understand how to use this SDK correctly.

## Overview

A TypeScript SDK for iMessage automation on macOS. Works with Node.js and Bun.

## Installation

```bash
# Bun (recommended)
bun add @photon-ai/imessage-kit

# Node.js
npm install @photon-ai/imessage-kit better-sqlite3
```

## Core Patterns

### 1. Basic Setup

```typescript
import { IMessageSDK } from '@photon-ai/imessage-kit'

const sdk = new IMessageSDK({ debug: true })

// ... do work ...

await sdk.close()  // Always close when done
```

### 2. Send Messages

```typescript
// Text
await sdk.send('+1234567890', 'Hello!')

// Images
await sdk.send('+1234567890', { images: ['/path/to/image.jpg'] })

// Files
await sdk.send('+1234567890', { files: ['/path/to/doc.pdf'] })

// Combined
await sdk.send('+1234567890', {
    text: 'Check this out',
    images: ['photo.jpg'],
    files: ['report.pdf']
})

// To group chat (use chatId from listChats)
await sdk.send('chat45e2b868ce1e43da89af262922733382', 'Hello group!')
```

### 3. Query Messages

```typescript
// Get messages with filters
const result = await sdk.getMessages({
    sender: '+1234567890',
    unreadOnly: true,
    limit: 20,
    since: new Date('2025-01-01'),
    search: 'keyword'
})

// Get unread grouped by sender
const unread = await sdk.getUnreadMessages()
for (const { sender, messages } of unread.groups) {
    console.log(`${sender}: ${messages.length} unread`)
}
```

### 4. List Chats

```typescript
const chats = await sdk.listChats({
    type: 'group',      // 'all' | 'group' | 'dm'
    hasUnread: true,
    sortBy: 'recent',
    search: 'Project',
    limit: 20
})
```

### 5. Real-time Watching

```typescript
await sdk.startWatching({
    onMessage: (msg) => { /* all messages */ },
    onDirectMessage: (msg) => { /* DMs only */ },
    onGroupMessage: (msg) => { /* groups only */ },
    onError: (err) => { /* errors */ }
})

sdk.stopWatching()
```

### 6. Auto-Reply Bot

```typescript
await sdk.startWatching({
    onDirectMessage: async (msg) => {
        await sdk.message(msg)
            .ifFromOthers()
            .matchText(/hello/i)
            .replyText('Hi there!')
            .execute()
    }
})
```

### 7. Scheduled Messages

```typescript
import { IMessageSDK, MessageScheduler } from '@photon-ai/imessage-kit'

const scheduler = new MessageScheduler(sdk)

// One-time
scheduler.schedule({
    to: '+1234567890',
    content: 'Reminder!',
    sendAt: new Date(Date.now() + 5 * 60 * 1000)
})

// Recurring
scheduler.scheduleRecurring({
    to: '+1234567890',
    content: 'Daily update',
    startAt: new Date(),
    interval: 'daily'  // 'hourly' | 'daily' | 'weekly' | 'monthly' | number (ms)
})

scheduler.destroy()  // Cleanup
```

### 8. Smart Reminders (Human-friendly)

```typescript
import { IMessageSDK, Reminders } from '@photon-ai/imessage-kit'

const reminders = new Reminders(sdk)

// Relative time
reminders.in('5 minutes', '+1234567890', 'Break time!')
reminders.in('2 hours', '+1234567890', 'Call client')

// Specific time
reminders.at('5pm', '+1234567890', 'End of day')
reminders.at('tomorrow 9am', '+1234567890', 'Standup')
reminders.at('friday 2pm', '+1234567890', 'Weekly sync')

reminders.destroy()  // Cleanup
```

## Message Object

```typescript
interface Message {
    id: string
    guid: string
    text: string | null
    sender: string           // Phone or email
    senderName: string | null
    chatId: string
    isGroupChat: boolean
    isFromMe: boolean
    isRead: boolean
    service: 'iMessage' | 'SMS' | 'RCS'
    attachments: Attachment[]
    date: Date
}
```

## Error Handling

```typescript
import { SendError, DatabaseError } from '@photon-ai/imessage-kit'

try {
    await sdk.send('+1234567890', 'Hello')
} catch (error) {
    if (error instanceof SendError) {
        // Handle send failure
    }
}
```

## Best Practices

1. **Always close SDK**: Call `sdk.close()` when done
2. **Always destroy schedulers**: Call `scheduler.destroy()` or `reminders.destroy()`
3. **Use absolute paths** for files and images
4. **Check attachment existence** before downloading: `await attachmentExists(attachment)`
5. **Handle errors** with try-catch for send operations
6. **Use `ifFromOthers()`** in auto-reply to avoid infinite loops

## Common Mistakes to Avoid

1. ❌ Forgetting to call `sdk.close()` (leaks resources)
2. ❌ Using relative paths for attachments
3. ❌ Auto-replying without `ifFromOthers()` (causes loops)
4. ❌ Not handling errors in send operations
5. ❌ Forgetting to destroy scheduler/reminders

## ChatId Formats

- **Phone**: `'+1234567890'`
- **Email**: `'user@example.com'`
- **Group**: `'chat45e2b868ce1e43da89af262922733382'` (from listChats)
- **Service-prefixed**: `'iMessage;+1234567890'` (from database)

## Attachment Helpers

```typescript
import {
    attachmentExists,
    downloadAttachment,
    getAttachmentSize,
    isImageAttachment,
    isVideoAttachment,
    isAudioAttachment
} from '@photon-ai/imessage-kit'
```

## Duration Formats (for Reminders)

- `"30 seconds"`
- `"5 minutes"`
- `"2 hours"`
- `"1 day"`
- `"1 week"`

## Time Formats (for Reminders.at)

- `"5pm"`, `"5:30pm"`
- `"17:30"` (24-hour)
- `"tomorrow 9am"`
- `"friday 2pm"`

## Requirements

- macOS only
- Node.js >= 18 or Bun >= 1.0
- Full Disk Access permission