Add optional AI generation, MQTT, OAuth refresh and calendar recurrence
This commit is contained in:
Pigway
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"""Optional one-image generation, using the durable operation queue."""
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import base64
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import json
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from io import BytesIO
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from typing import Literal
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from urllib.parse import urlsplit
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from fastapi import Depends, Header, Request
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from PIL import Image, ImageOps
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from pydantic import Field
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from pigway_frame_flow.core.auth import require
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from pigway_frame_flow.errors import ErrorCode as E
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from pigway_frame_flow.errors import FlowError
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from pigway_frame_flow.extensions.api import AISecret
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from pigway_frame_flow.extensions.secrets import save_secret
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from pigway_frame_flow.models import Accepted, StrictModel
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from pigway_frame_flow.renderers.images import MAX_IMAGE_PIXELS
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from pigway_frame_flow.storage.database import encode
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class ImageGenerationConfig(StrictModel):
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endpoint: str = Field(max_length=2048)
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model: str = Field(min_length=1, max_length=120)
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size: Literal["1024x1024", "1024x1536", "1536x1024"] = "1024x1536"
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class ImageGenerationInput(StrictModel):
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prompt: str = Field(min_length=1, max_length=4000)
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def install_ai_images(app, service):
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def config():
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row = service.db.one("SELECT payload FROM app_config WHERE key='ai_images'")
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if not row:
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raise FlowError(E.CONFIG_REQUIRED, "Configure image generation first", 409)
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return ImageGenerationConfig.model_validate_json(row["payload"])
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@app.get(
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"/api/v1/settings/ai-images",
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dependencies=[Depends(require("admin"))],
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tags=["AI"],
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)
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def get_config():
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row = service.db.one("SELECT payload FROM app_config WHERE key='ai_images'")
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return {
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"config": json.loads(row["payload"]) if row else None,
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"key_configured": (
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service.settings.config_dir / "ai-images.secret"
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).exists(),
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}
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@app.put(
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"/api/v1/settings/ai-images",
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dependencies=[Depends(require("admin"))],
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tags=["AI"],
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)
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def set_config(payload: ImageGenerationConfig):
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url = urlsplit(payload.endpoint)
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if (
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url.scheme != "https"
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or not url.hostname
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or url.username
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or url.password
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or url.query
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or url.fragment
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or url.port not in (None, 443)
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):
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raise FlowError(
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E.INVALID_REQUEST,
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"Image generation requires a plain public HTTPS endpoint",
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)
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if url.hostname not in service.settings.image_url_hosts:
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service.settings.image_url_hosts.append(url.hostname)
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service.db.execute(
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"INSERT OR REPLACE INTO app_config VALUES('image_url_hosts',?)",
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(encode(service.settings.image_url_hosts),),
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)
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service.db.execute(
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"INSERT OR REPLACE INTO app_config VALUES('ai_images',?)",
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(payload.model_dump_json(),),
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)
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return payload
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@app.put(
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"/api/v1/settings/ai-images/key",
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status_code=204,
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dependencies=[Depends(require("admin"))],
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tags=["AI"],
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)
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def set_key(payload: AISecret):
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key = payload.key.get_secret_value()
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save_secret(service.settings.config_dir / "ai-images.secret", key)
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service.settings.additional_secrets.append(key)
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@app.post(
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"/api/v1/ai/images",
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status_code=202,
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response_model=Accepted,
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dependencies=[Depends(require("render:write"))],
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tags=["AI"],
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)
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def generate(
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payload: ImageGenerationInput,
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request: Request,
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idempotency_key: str | None = Header(default=None),
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):
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config()
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if not (service.settings.config_dir / "ai-images.secret").exists():
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raise FlowError(
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E.CONFIG_REQUIRED, "Configure image generation key first", 409
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)
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id = service.submit(
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"render-ai",
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payload.model_dump(),
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service.settings.device_id,
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request.state.client_id,
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request.state.request_id,
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idempotency_key,
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)
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return Accepted(operation_id=id, job_id=id, status="accepted")
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def execute(op, payload):
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service.update(op["id"], "RENDERING")
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conf = config()
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key = (service.settings.config_dir / "ai-images.secret").read_text().strip()
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service.settings.additional_secrets.append(key)
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service.db.execute(
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"UPDATE operations SET write_started=1 WHERE id=?", (op["id"],)
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)
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try:
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raw = service.assets.fetch_url(
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conf.endpoint,
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method="POST",
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headers={
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"Authorization": "Bearer " + key,
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"Content-Type": "application/json",
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},
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body=json.dumps(
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{
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"model": conf.model,
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"prompt": payload["prompt"],
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"size": conf.size,
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"n": 1,
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}
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).encode(),
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limit=service.settings.max_bytes,
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)
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result = json.loads(raw)["data"]
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if len(result) != 1:
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raise ValueError()
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if result[0].get("b64_json"):
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image_data = base64.b64decode(result[0]["b64_json"], validate=True)
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else:
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image_data = service.assets.fetch_url(result[0]["url"])
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with Image.open(BytesIO(image_data)) as image:
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if image.width * image.height > MAX_IMAGE_PIXELS:
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raise ValueError()
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rgba = ImageOps.exif_transpose(image).convert("RGBA")
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rgb = Image.new("RGB", rgba.size, "white")
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rgb.paste(rgba, mask=rgba.getchannel("A"))
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output = BytesIO()
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rgb.save(output, "JPEG", quality=93)
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asset = service.assets.put(output.getvalue(), "ai-art.jpg", "generated")
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except Exception:
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raise FlowError(
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E.RENDER_FAILED,
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"Image generation failed; request may have been billed. No automatic retry was sent.",
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502,
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) from None
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service.update(op["id"], "COMPLETED", asset)
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service.db.history(op, "COMPLETED")
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service.db.event("operation.completed", {"operation_id": op["id"]})
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service.operation_handlers["render-ai"] = execute
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