33 lines
1.8 KiB
SQL
33 lines
1.8 KiB
SQL
SET search_path TO atlas, public;
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-- 水印派生引用不可变模板版本；编辑草稿确认前不改写原图或 SKU 选图。
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CREATE TABLE media_watermark_derivatives (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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workspace_id UUID NOT NULL REFERENCES workspaces(id) ON DELETE RESTRICT,
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source_asset_id UUID NOT NULL,
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watermark_template_id UUID NOT NULL,
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watermark_template_version INTEGER NOT NULL CHECK (watermark_template_version > 0),
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output_asset_id UUID,
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status TEXT NOT NULL DEFAULT 'queued' CHECK (status IN ('queued', 'running', 'succeeded', 'failed')),
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error_code TEXT,
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created_by_user_id UUID REFERENCES users(id) ON DELETE SET NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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started_at TIMESTAMPTZ,
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completed_at TIMESTAMPTZ,
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FOREIGN KEY (workspace_id, source_asset_id) REFERENCES media_assets(workspace_id, id) ON DELETE RESTRICT,
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FOREIGN KEY (workspace_id, output_asset_id) REFERENCES media_assets(workspace_id, id) ON DELETE RESTRICT,
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FOREIGN KEY (workspace_id, watermark_template_id, watermark_template_version)
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REFERENCES watermark_template_versions(workspace_id, template_id, version) ON DELETE RESTRICT,
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UNIQUE (workspace_id, id),
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CHECK ((status = 'succeeded') = (output_asset_id IS NOT NULL)),
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CHECK (status <> 'failed' OR error_code IS NOT NULL)
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);
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CREATE INDEX ix_media_watermark_derivatives_source
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ON media_watermark_derivatives (workspace_id, source_asset_id, created_at DESC);
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ALTER TABLE media_watermark_derivatives ENABLE ROW LEVEL SECURITY;
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ALTER TABLE media_watermark_derivatives FORCE ROW LEVEL SECURITY;
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CREATE POLICY workspace_isolation ON media_watermark_derivatives
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USING (workspace_id = app_current_workspace_id())
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WITH CHECK (workspace_id = app_current_workspace_id());
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