-- Copyright (c) 2026 Probo Inc <hello@probo.com>.
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.

-- Rename owner_profile_id to approver_profile_id on documents table
ALTER TABLE documents RENAME COLUMN owner_profile_id TO approver_profile_id;

-- Rename owner_profile_id to approver_profile_id on document_versions table
ALTER TABLE document_versions RENAME COLUMN owner_profile_id TO approver_profile_id;

-- Create document_approvers join table
CREATE TABLE document_approvers (
    document_id TEXT NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
    approver_profile_id TEXT NOT NULL REFERENCES iam_membership_profiles(id) ON UPDATE CASCADE ON DELETE RESTRICT,
    tenant_id TEXT NOT NULL,
    organization_id TEXT NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE NOT NULL,
    PRIMARY KEY (document_id, approver_profile_id)
);

-- Create document_version_approvers join table
CREATE TABLE document_version_approvers (
    document_version_id TEXT NOT NULL REFERENCES document_versions(id) ON DELETE CASCADE,
    approver_profile_id TEXT NOT NULL REFERENCES iam_membership_profiles(id) ON UPDATE CASCADE ON DELETE RESTRICT,
    tenant_id TEXT NOT NULL,
    organization_id TEXT NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE NOT NULL,
    PRIMARY KEY (document_version_id, approver_profile_id)
);

-- Migrate existing approver data from documents to document_approvers
INSERT INTO document_approvers (document_id, approver_profile_id, tenant_id, organization_id, created_at)
SELECT id, approver_profile_id, tenant_id, organization_id, created_at
FROM documents
WHERE approver_profile_id IS NOT NULL
  AND deleted_at IS NULL;

-- Migrate existing approver data from document_versions to document_version_approvers
INSERT INTO document_version_approvers (document_version_id, approver_profile_id, tenant_id, organization_id, created_at)
SELECT id, approver_profile_id, tenant_id, organization_id, created_at
FROM document_versions
WHERE approver_profile_id IS NOT NULL;

-- Allow NULL on old columns now that data is in the join tables
ALTER TABLE document_versions ALTER COLUMN approver_profile_id DROP NOT NULL;