29 lines
1.0 KiB
Python
29 lines
1.0 KiB
Python
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"""
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对话 TTS 音频 URL 下发到客户端。
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与回忆录章节图片一致：私有桶下不能把「直链」当公开可读 URL 使用，应对 COS object key
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生成预签名下载地址后再交给 App（参见 `normalize_image_assets_for_api` 中的 `get_download_url`）。
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持久化（DB / Redis）仍保存 upload 返回的 canonical URL，仅在 API 响应与 WS 实时下发时做 presign。
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"""
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from __future__ import annotations
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from app.core.cos_url_keys import presign_tts_urls_for_playback
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from app.ports.storage import ObjectStorage
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def apply_presigned_tts_urls_to_messages(
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messages: list[dict],
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storage: ObjectStorage | None,
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) -> None:
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"""就地改写助手消息的 `ttsAudioUrls` 为预签名 URL；无 storage 时不变。"""
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if not storage:
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return
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for m in messages:
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tts = m.get("ttsAudioUrls")
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if not isinstance(tts, list) or not tts:
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continue
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str_urls = [x for x in tts if isinstance(x, str)]
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m["ttsAudioUrls"] = presign_tts_urls_for_playback(str_urls, storage)
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