like_favorite.py
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"""点赞/收藏操作，对应 Go xiaohongshu/like_favorite.go。"""
from __future__ import annotations
import json
import logging
import time
from .cdp import Page
from .errors import NoFeedDetailError
from .selectors import COLLECT_BUTTON, LIKE_BUTTON
from .types import ActionResult
from .urls import make_feed_detail_url
logger = logging.getLogger(__name__)
# 从 __INITIAL_STATE__ 读取互动状态的 JS
_GET_INTERACT_STATE_JS = """
(() => {
if (window.__INITIAL_STATE__ &&
window.__INITIAL_STATE__.note &&
window.__INITIAL_STATE__.note.noteDetailMap) {
return JSON.stringify(window.__INITIAL_STATE__.note.noteDetailMap);
}
return "";
})()
"""
def _get_interact_state(page: Page, feed_id: str) -> tuple[bool, bool]:
"""读取笔记的点赞/收藏状态。
Returns:
(liked, collected)
Raises:
NoFeedDetailError: 无法获取状态。
"""
result = page.evaluate(_GET_INTERACT_STATE_JS)
if not result:
raise NoFeedDetailError()
note_detail_map = json.loads(result)
detail = note_detail_map.get(feed_id)
if not detail:
raise NoFeedDetailError()
interact = detail.get("note", {}).get("interactInfo", {})
return interact.get("liked", False), interact.get("collected", False)
def _prepare_page(page: Page, feed_id: str, xsec_token: str) -> None:
"""导航到 feed 详情页。"""
url = make_feed_detail_url(feed_id, xsec_token)
page.navigate(url)
page.wait_for_load()
page.wait_dom_stable()
time.sleep(1)
# ========== 点赞 ==========
def like_feed(page: Page, feed_id: str, xsec_token: str) -> ActionResult:
"""点赞笔记（幂等：已点赞则跳过）。"""
_prepare_page(page, feed_id, xsec_token)
return _toggle_like(page, feed_id, target_liked=True)
def unlike_feed(page: Page, feed_id: str, xsec_token: str) -> ActionResult:
"""取消点赞（幂等：未点赞则跳过）。"""
_prepare_page(page, feed_id, xsec_token)
return _toggle_like(page, feed_id, target_liked=False)
def _toggle_like(page: Page, feed_id: str, target_liked: bool) -> ActionResult:
"""执行点赞/取消点赞操作。"""
action_name = "点赞" if target_liked else "取消点赞"
try:
liked, _ = _get_interact_state(page, feed_id)
except NoFeedDetailError:
logger.warning("无法读取互动状态，直接点击")
liked = not target_liked # 强制执行点击
# 幂等检查
if liked == target_liked:
logger.info("feed %s 已%s，跳过", feed_id, action_name)
return ActionResult(feed_id=feed_id, success=True, message=f"已{action_name}")
# 点击
page.click_element(LIKE_BUTTON)
time.sleep(3)
# 验证
try:
liked, _ = _get_interact_state(page, feed_id)
if liked == target_liked:
logger.info("feed %s %s成功", feed_id, action_name)
return ActionResult(feed_id=feed_id, success=True, message=f"{action_name}成功")
except NoFeedDetailError:
pass
# 重试一次
logger.warning("feed %s %s可能未成功，重试", feed_id, action_name)
page.click_element(LIKE_BUTTON)
time.sleep(2)
return ActionResult(feed_id=feed_id, success=True, message=f"{action_name}已执行")
# ========== 收藏 ==========
def favorite_feed(page: Page, feed_id: str, xsec_token: str) -> ActionResult:
"""收藏笔记（幂等：已收藏则跳过）。"""
_prepare_page(page, feed_id, xsec_token)
return _toggle_favorite(page, feed_id, target_collected=True)
def unfavorite_feed(page: Page, feed_id: str, xsec_token: str) -> ActionResult:
"""取消收藏（幂等：未收藏则跳过）。"""
_prepare_page(page, feed_id, xsec_token)
return _toggle_favorite(page, feed_id, target_collected=False)
def _toggle_favorite(page: Page, feed_id: str, target_collected: bool) -> ActionResult:
"""执行收藏/取消收藏操作。"""
action_name = "收藏" if target_collected else "取消收藏"
try:
_, collected = _get_interact_state(page, feed_id)
except NoFeedDetailError:
logger.warning("无法读取互动状态，直接点击")
collected = not target_collected
# 幂等检查
if collected == target_collected:
logger.info("feed %s 已%s，跳过", feed_id, action_name)
return ActionResult(feed_id=feed_id, success=True, message=f"已{action_name}")
# 点击
page.click_element(COLLECT_BUTTON)
time.sleep(3)
# 验证
try:
_, collected = _get_interact_state(page, feed_id)
if collected == target_collected:
logger.info("feed %s %s成功", feed_id, action_name)
return ActionResult(feed_id=feed_id, success=True, message=f"{action_name}成功")
except NoFeedDetailError:
pass
# 重试
logger.warning("feed %s %s可能未成功，重试", feed_id, action_name)
page.click_element(COLLECT_BUTTON)
time.sleep(2)
return ActionResult(feed_id=feed_id, success=True, message=f"{action_name}已执行")