83 lines
3.0 KiB
Python
83 lines
3.0 KiB
Python
"""initial schema (squashed)
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单一迁移：pgvector + 当前全部 ORM 表（含 conversations.deleted_at 软删除）；并补充 models 未声明的
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story_image_intents.asset_id → assets 外键，以及每个 story 仅一条 primary intent 的唯一索引。
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chapters 含 story 物化字段：markdown_compose_dirty、markdown_composed_at、reading_segments_json
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（阅读片段快照，随 ORM 一并 create_all）。
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已并入原 0002（stories-first：无 chapter_sections / memoir_images.section_id）与原 0003（segments.tts_audio_urls）
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的语义：仅对「全新库」由 create_all 建出；**已有库不会 ALTER**。
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老库缺列见 0019_align_legacy_schema（segments.audio_duration_seconds、tts_audio_urls，
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conversations.deleted_at，conversation_messages.tts_audio_urls 等）。
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conversation_messages 表由 ORM 在 0001 create_all 中创建（新库）；老库若缺表须单独处理。
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story_image_intents 无 source_span（主图回填在正文末尾，意图仅存 caption / prompt_brief 等）。
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新库 / 删库重来：`alembic upgrade head`。
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Revision ID: 0001_initial
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Revises:
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"""
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from typing import Sequence, Union
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from alembic import op
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from sqlalchemy import text
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revision: str = "0001_initial"
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down_revision: Union[str, None] = None
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def _import_all_models() -> None:
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from app.features.asset import models as _asset_models # noqa: F401
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from app.features.auth import models as _auth_models # noqa: F401
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from app.features.conversation import models as _conv_models # noqa: F401
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from app.features.memory import models as _memory_models # noqa: F401
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from app.features.memoir import models as _memoir_models # noqa: F401
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from app.features.payment import models as _payment_models # noqa: F401
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from app.features.story import models as _story_models # noqa: F401
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from app.features.user import models as _user_models # noqa: F401
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def upgrade() -> None:
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conn = op.get_bind()
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conn.execute(text("CREATE EXTENSION IF NOT EXISTS vector"))
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from app.core.db import Base
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_import_all_models()
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Base.metadata.create_all(bind=conn)
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op.create_foreign_key(
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"fk_story_image_intents_asset_id_assets",
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"story_image_intents",
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"assets",
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["asset_id"],
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["id"],
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ondelete="SET NULL",
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)
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op.execute(
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"""
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CREATE UNIQUE INDEX IF NOT EXISTS uq_story_primary_image_intent
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ON story_image_intents (story_id)
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WHERE intent_role = 'primary'
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"""
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)
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def downgrade() -> None:
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conn = op.get_bind()
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from app.core.db import Base
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op.execute("DROP INDEX IF EXISTS uq_story_primary_image_intent")
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op.drop_constraint(
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"fk_story_image_intents_asset_id_assets",
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"story_image_intents",
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type_="foreignkey",
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)
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_import_all_models()
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Base.metadata.drop_all(bind=conn)
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conn.execute(text("DROP EXTENSION IF EXISTS vector"))
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