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fix(feishu): route tables and multi-line code blocks to CardKit 2.0 #19038

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fix(feishu): route tables and multi-line code blocks to CardKit 2.0 #19038

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26 changes: 26 additions & 0 deletions gateway/platforms/feishu.py
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,11 @@
_MARKDOWN_FENCE_OPEN_RE = re.compile(r"^```([^\n`]*)\s*$")
_MARKDOWN_FENCE_CLOSE_RE = re.compile(r"^```\s*$")
_MENTION_RE = re.compile(r"@_user_\d+")
# GFM table: a row of |cells| followed by a separator row (---|:---|...)
_TABLE_MARKDOWN_RE = re.compile(r"^\|.+\|.*\n\|[-: |]+\|", re.MULTILINE)
# Multi-line fenced code block (opening fence + 2+ content lines + closing fence)
# Empty or 1-line blocks render fine in post/md; route 3+ content lines to CardKit 2.0.
_CODE_BLOCK_RE = re.compile(r"^```[^\n]*\n(.*\n){2,}```", re.MULTILINE | re.DOTALL)
_MULTISPACE_RE = re.compile(r"[ \t]{2,}")
_POST_CONTENT_INVALID_RE = re.compile(r"content format of the post type is incorrect", re.IGNORECASE)
# ---------------------------------------------------------------------------
Expand Down Expand Up @@ -3990,6 +3995,11 @@ def _is_duplicate(self, message_id: str) -> bool:
# =========================================================================

def _build_outbound_payload(self, content: str) -> tuple[str, str]:
# Route tables and multi-line code blocks to CardKit 2.0 interactive format.
# Feishu's post/md tag does not support table syntax and truncates code
# blocks after ~6 lines; CardKit 2.0's markdown element handles both.
if _TABLE_MARKDOWN_RE.search(content) or _CODE_BLOCK_RE.search(content):
return "interactive", self._build_card_payload(content)
if _MARKDOWN_HINT_RE.search(content):
return "post", _build_markdown_post_payload(content)
text_payload = {"text": content}
Expand Down Expand Up @@ -4434,6 +4444,22 @@ def _build_media_post_payload(self, *, caption: str, media_tag: Dict[str, str])
content.append([media_tag])
return json.dumps(payload, ensure_ascii=False)

def _build_card_payload(self, content: str) -> str:
"""Build a CardKit 2.0 interactive card with a markdown element.

CardKit 2.0's ``tag: markdown`` element natively supports GFM tables and
fenced code blocks with scrollable rendering — unlike the ``post/md`` tag
which silently drops tables and truncates code after ~6 lines.
"""
card = {
"schema": "2.0",
"config": {"wide_screen_mode": True},
"body": {
"elements": [{"tag": "markdown", "content": content}]
},
}
return json.dumps(card, ensure_ascii=False)

@staticmethod
def _resolve_outbound_file_routing(
*,
Expand Down