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60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
"""0016 conversation visibility — separate "persisted" from "shown in sidebar".
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Adds ``conversations.visibility`` (``listed`` | ``hidden``) so a conversation
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can be stored without surfacing in the owner's sidebar. Until now display was
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inferred from identity columns: ``(api_key IS NULL OR agent_id IS NOT NULL)``.
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The backfill reproduces that exact predicate so existing sidebars are
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unchanged; new rows set the value explicitly at write time.
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Revision ID: 0016_conversation_visibility
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Revises: 0015_token_usage_model_id
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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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revision: str = "0016_conversation_visibility"
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down_revision: Union[str, None] = "0015_token_usage_model_id"
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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 upgrade() -> None:
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op.execute(
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"ALTER TABLE conversations "
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"ADD COLUMN visibility TEXT NOT NULL DEFAULT 'listed';"
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)
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# NOT VALID first so the ACCESS EXCLUSIVE lock doesn't scan the table;
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# VALIDATE then runs under a weaker lock that allows concurrent reads/writes.
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op.execute(
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"ALTER TABLE conversations "
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"ADD CONSTRAINT conversations_visibility_chk "
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"CHECK (visibility IN ('listed', 'hidden')) NOT VALID;"
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)
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op.execute(
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"ALTER TABLE conversations VALIDATE CONSTRAINT conversations_visibility_chk;"
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)
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# Preserve current sidebars: the old display heuristic showed a
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# conversation when (api_key IS NULL OR agent_id IS NOT NULL); hide the rest.
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op.execute(
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"UPDATE conversations SET visibility = 'hidden' "
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"WHERE NOT (api_key IS NULL OR agent_id IS NOT NULL);"
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)
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# Matches the sidebar query: user_id + visibility, newest first.
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op.execute(
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"CREATE INDEX conversations_user_listed_idx "
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'ON conversations (user_id, date DESC) '
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"WHERE visibility = 'listed';"
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)
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def downgrade() -> None:
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op.execute("DROP INDEX IF EXISTS conversations_user_listed_idx;")
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op.execute(
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"ALTER TABLE conversations "
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"DROP CONSTRAINT IF EXISTS conversations_visibility_chk;"
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)
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op.execute("ALTER TABLE conversations DROP COLUMN IF EXISTS visibility;")
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