SurfSense/surfsense_backend/app/capabilities/tiktok/scrape/schemas.py
CREDO23 ba375ea3ee feat(tiktok): emit graceful ErrorItem for blocked/empty listings
Profile and search feeds are trust-gated: an anonymous headless session
gets an empty item_list (profile) or no results XHR (search), while
hashtag feeds load. A zero-item listing now yields one honest ErrorItem
(errorCode="no_items") instead of vanishing silently, and ErrorItems are
excluded from billing so a blocked target is surfaced but never charged.
2026-07-08 23:14:50 +02:00

87 lines
3 KiB
Python

"""``tiktok.scrape`` I/O contracts.
A lean, agent-friendly surface over ``TikTokScrapeInput``
(``app/proprietary/platforms/tiktok``). The executor maps this to the full
scraper input; the scraper's ``TikTokVideoItem`` is reused verbatim as the
output element. Any TikTok URL kind (video, profile, hashtag, search) goes in
``urls``; ``profiles``/``hashtags``/``search_queries`` are typed shortcuts.
"""
from __future__ import annotations
from pydantic import BaseModel, Field, model_validator
from app.proprietary.platforms.tiktok import TikTokVideoItem
MAX_TIKTOK_SOURCES = 20
"""Per-call cap on each source list: bounds a synchronous request's fan-out."""
MAX_TIKTOK_ITEMS = 100
"""Hard ceiling on items returned per call, regardless of the per-target count."""
class ScrapeInput(BaseModel):
urls: list[str] = Field(
default_factory=list,
max_length=MAX_TIKTOK_SOURCES,
description=(
"TikTok URLs to scrape: a video, a profile (/@<user>), a hashtag "
"(/tag/<name>), or a search URL. Provide these OR profiles/hashtags/"
"search_queries (at least one source is required)."
),
)
profiles: list[str] = Field(
default_factory=list,
max_length=MAX_TIKTOK_SOURCES,
description="Profile usernames (with or without a leading '@').",
)
hashtags: list[str] = Field(
default_factory=list,
max_length=MAX_TIKTOK_SOURCES,
description="Hashtag names to scrape, without the leading '#'.",
)
search_queries: list[str] = Field(
default_factory=list,
max_length=MAX_TIKTOK_SOURCES,
description="Search terms to run on TikTok.",
)
results_per_page: int = Field(
default=10,
ge=1,
le=MAX_TIKTOK_ITEMS,
description="Max videos to pull per profile/hashtag/search target.",
)
max_items: int = Field(
default=10,
ge=1,
le=MAX_TIKTOK_ITEMS,
description="Max total items to return across all sources.",
)
@model_validator(mode="after")
def _require_a_source(self) -> ScrapeInput:
if not any((self.urls, self.profiles, self.hashtags, self.search_queries)):
raise ValueError(
"Provide at least one of 'urls', 'profiles', 'hashtags', or "
"'search_queries'."
)
return self
@property
def estimated_units(self) -> int:
"""Worst-case billable items for the pre-flight gate: ``max_items`` is a
hard cross-source ceiling (le=100), so no call can exceed it."""
return self.max_items
class ScrapeOutput(BaseModel):
items: list[TikTokVideoItem] = Field(
default_factory=list,
description="One item per video returned, in emission order.",
)
@property
def billable_units(self) -> int:
"""One returned video = one billable unit; ErrorItems (``errorCode`` set,
for blocked/empty targets) are surfaced but never charged."""
return sum(1 for item in self.items if not getattr(item, "errorCode", None))