Enhance image handling in platform adapters

- Updated the image generation function description to clarify usage with markdown.
- Added `send_image` method to `BasePlatformAdapter` for native image sending across platforms.
- Implemented `send_image` in `DiscordAdapter` and `TelegramAdapter` to handle image attachments directly.
- Introduced `extract_images` method to extract image URLs from markdown and HTML, improving content processing.
- Enhanced message handling to support sending images as attachments while maintaining text content.
This commit is contained in:
teknium1
2026-02-10 21:02:40 -08:00
parent abe925e212
commit ada0b4f131
4 changed files with 207 additions and 15 deletions

View File

@@ -6,10 +6,11 @@ and implement the required methods.
"""
import asyncio
import re
from abc import ABC, abstractmethod
from dataclasses import dataclass, field
from datetime import datetime
from typing import Dict, List, Optional, Any, Callable, Awaitable
from typing import Dict, List, Optional, Any, Callable, Awaitable, Tuple
from enum import Enum
import sys
@@ -177,6 +178,68 @@ class BasePlatformAdapter(ABC):
"""
pass
async def send_image(
self,
chat_id: str,
image_url: str,
caption: Optional[str] = None,
reply_to: Optional[str] = None,
) -> SendResult:
"""
Send an image natively via the platform API.
Override in subclasses to send images as proper attachments
instead of plain-text URLs. Default falls back to sending the
URL as a text message.
"""
# Fallback: send URL as text (subclasses override for native images)
text = f"{caption}\n{image_url}" if caption else image_url
return await self.send(chat_id=chat_id, content=text, reply_to=reply_to)
@staticmethod
def extract_images(content: str) -> Tuple[List[Tuple[str, str]], str]:
"""
Extract image URLs from markdown and HTML image tags in a response.
Finds patterns like:
- ![alt text](https://example.com/image.png)
- <img src="https://example.com/image.png">
- <img src="https://example.com/image.png"></img>
Args:
content: The response text to scan.
Returns:
Tuple of (list of (url, alt_text) pairs, cleaned content with image tags removed).
"""
images = []
cleaned = content
# Match markdown images: ![alt](url)
md_pattern = r'!\[([^\]]*)\]\((https?://[^\s\)]+)\)'
for match in re.finditer(md_pattern, content):
alt_text = match.group(1)
url = match.group(2)
# Only extract URLs that look like actual images
if any(url.lower().endswith(ext) or ext in url.lower() for ext in
['.png', '.jpg', '.jpeg', '.gif', '.webp', 'fal.media', 'fal-cdn', 'replicate.delivery']):
images.append((url, alt_text))
# Match HTML img tags: <img src="url"> or <img src="url"></img> or <img src="url"/>
html_pattern = r'<img\s+src=["\']?(https?://[^\s"\'<>]+)["\']?\s*/?>\s*(?:</img>)?'
for match in re.finditer(html_pattern, content):
url = match.group(1)
images.append((url, ""))
# Remove matched image tags from content if we found images
if images:
cleaned = re.sub(md_pattern, '', cleaned)
cleaned = re.sub(html_pattern, '', cleaned)
# Clean up leftover blank lines
cleaned = re.sub(r'\n{3,}', '\n\n', cleaned).strip()
return images, cleaned
async def _keep_typing(self, chat_id: str, interval: float = 2.0) -> None:
"""
Continuously send typing indicator until cancelled.
@@ -231,23 +294,41 @@ class BasePlatformAdapter(ABC):
# Send response if any
if response:
result = await self.send(
chat_id=event.source.chat_id,
content=response,
reply_to=event.message_id
)
# Extract image URLs and send them as native platform attachments
images, text_content = self.extract_images(response)
# Log send failures (don't raise - user already saw tool progress)
if not result.success:
print(f"[{self.name}] Failed to send response: {result.error}")
# Try sending without markdown as fallback
fallback_result = await self.send(
# Send the text portion first (if any remains after extracting images)
if text_content:
result = await self.send(
chat_id=event.source.chat_id,
content=f"(Response formatting failed, plain text:)\n\n{response[:3500]}",
content=text_content,
reply_to=event.message_id
)
if not fallback_result.success:
print(f"[{self.name}] Fallback send also failed: {fallback_result.error}")
# Log send failures (don't raise - user already saw tool progress)
if not result.success:
print(f"[{self.name}] Failed to send response: {result.error}")
# Try sending without markdown as fallback
fallback_result = await self.send(
chat_id=event.source.chat_id,
content=f"(Response formatting failed, plain text:)\n\n{text_content[:3500]}",
reply_to=event.message_id
)
if not fallback_result.success:
print(f"[{self.name}] Fallback send also failed: {fallback_result.error}")
# Send extracted images as native attachments
for image_url, alt_text in images:
try:
img_result = await self.send_image(
chat_id=event.source.chat_id,
image_url=image_url,
caption=alt_text if alt_text else None,
)
if not img_result.success:
print(f"[{self.name}] Failed to send image: {img_result.error}")
except Exception as img_err:
print(f"[{self.name}] Error sending image: {img_err}")
# Check if there's a pending message that was queued during our processing
if session_key in self._pending_messages:

View File

@@ -8,6 +8,7 @@ Uses discord.py library for:
"""
import asyncio
import os
from typing import Dict, List, Optional, Any
try:
@@ -173,6 +174,61 @@ class DiscordAdapter(BasePlatformAdapter):
except Exception as e:
return SendResult(success=False, error=str(e))
async def send_image(
self,
chat_id: str,
image_url: str,
caption: Optional[str] = None,
reply_to: Optional[str] = None,
) -> SendResult:
"""Send an image natively as a Discord file attachment."""
if not self._client:
return SendResult(success=False, error="Not connected")
try:
import aiohttp
channel = self._client.get_channel(int(chat_id))
if not channel:
channel = await self._client.fetch_channel(int(chat_id))
if not channel:
return SendResult(success=False, error=f"Channel {chat_id} not found")
# Download the image and send as a Discord file attachment
# (Discord renders attachments inline, unlike plain URLs)
async with aiohttp.ClientSession() as session:
async with session.get(image_url, timeout=aiohttp.ClientTimeout(total=30)) as resp:
if resp.status != 200:
raise Exception(f"Failed to download image: HTTP {resp.status}")
image_data = await resp.read()
# Determine filename from URL or content type
content_type = resp.headers.get("content-type", "image/png")
ext = "png"
if "jpeg" in content_type or "jpg" in content_type:
ext = "jpg"
elif "gif" in content_type:
ext = "gif"
elif "webp" in content_type:
ext = "webp"
import io
file = discord.File(io.BytesIO(image_data), filename=f"image.{ext}")
msg = await channel.send(
content=caption if caption else None,
file=file,
)
return SendResult(success=True, message_id=str(msg.id))
except ImportError:
print(f"[{self.name}] aiohttp not installed, falling back to URL. Run: pip install aiohttp")
return await super().send_image(chat_id, image_url, caption, reply_to)
except Exception as e:
print(f"[{self.name}] Failed to send image attachment, falling back to URL: {e}")
return await super().send_image(chat_id, image_url, caption, reply_to)
async def send_typing(self, chat_id: str) -> None:
"""Send typing indicator."""
if self._client:
@@ -232,6 +288,36 @@ class DiscordAdapter(BasePlatformAdapter):
async def _handle_message(self, message: DiscordMessage) -> None:
"""Handle incoming Discord messages."""
# In server channels (not DMs), require the bot to be @mentioned
# UNLESS the channel is in the free-response list.
#
# Config:
# DISCORD_FREE_RESPONSE_CHANNELS: Comma-separated channel IDs where the
# bot responds to every message without needing a mention.
# DISCORD_REQUIRE_MENTION: Set to "false" to disable mention requirement
# globally (all channels become free-response). Default: "true".
if not isinstance(message.channel, discord.DMChannel):
# Check if this channel is in the free-response list
free_channels_raw = os.getenv("DISCORD_FREE_RESPONSE_CHANNELS", "")
free_channels = {ch.strip() for ch in free_channels_raw.split(",") if ch.strip()}
channel_id = str(message.channel.id)
# Global override: if DISCORD_REQUIRE_MENTION=false, all channels are free
require_mention = os.getenv("DISCORD_REQUIRE_MENTION", "true").lower() not in ("false", "0", "no")
is_free_channel = channel_id in free_channels
if require_mention and not is_free_channel:
# Must be @mentioned to respond
if self._client.user not in message.mentions:
return # Silently ignore messages that don't mention the bot
# Strip the bot mention from the message text so the agent sees clean input
if self._client.user and self._client.user in message.mentions:
message.content = message.content.replace(f"<@{self._client.user.id}>", "").strip()
message.content = message.content.replace(f"<@!{self._client.user.id}>", "").strip()
# Determine message type
msg_type = MessageType.TEXT
if message.content.startswith("/"):

View File

@@ -174,6 +174,31 @@ class TelegramAdapter(BasePlatformAdapter):
except Exception as e:
return SendResult(success=False, error=str(e))
async def send_image(
self,
chat_id: str,
image_url: str,
caption: Optional[str] = None,
reply_to: Optional[str] = None,
) -> SendResult:
"""Send an image natively as a Telegram photo."""
if not self._bot:
return SendResult(success=False, error="Not connected")
try:
# Telegram can send photos directly from URLs
msg = await self._bot.send_photo(
chat_id=int(chat_id),
photo=image_url,
caption=caption[:1024] if caption else None, # Telegram caption limit
reply_to_message_id=int(reply_to) if reply_to else None,
)
return SendResult(success=True, message_id=str(msg.message_id))
except Exception as e:
print(f"[{self.name}] Failed to send photo, falling back to URL: {e}")
# Fallback: send as text link
return await super().send_image(chat_id, image_url, caption, reply_to)
async def send_typing(self, chat_id: str) -> None:
"""Send typing indicator."""
if self._bot:

View File

@@ -392,7 +392,7 @@ def get_image_tool_definitions() -> List[Dict[str, Any]]:
"type": "function",
"function": {
"name": "image_generate",
"description": "Generate high-quality images from text prompts using FLUX 2 Pro model with automatic 2x upscaling. Creates detailed, artistic images that are automatically upscaled for hi-rez results. Returns a single upscaled image URL that can be displayed using <img src=\"{URL}\"></img> tags.",
"description": "Generate high-quality images from text prompts using FLUX 2 Pro model with automatic 2x upscaling. Creates detailed, artistic images that are automatically upscaled for hi-rez results. Returns a single upscaled image URL. Display it using markdown: ![description](URL)",
"parameters": {
"type": "object",
"properties": {