--liquibase formatted sql
-- This code generated was by RbacViewPostgresGenerator, do not amend manually.


-- ============================================================================
--changeset RbacObjectGenerator:hs-office-relation-rbac-OBJECT endDelimiter:--//
-- ----------------------------------------------------------------------------
call rbac.generateRelatedRbacObject('hs_office.relation');
--//


-- ============================================================================
--changeset RbacRoleDescriptorsGenerator:hs-office-relation-rbac-ROLE-DESCRIPTORS endDelimiter:--//
-- ----------------------------------------------------------------------------
call rbac.generateRbacRoleDescriptors('hs_office.relation');
--//


-- ============================================================================
--changeset RolesGrantsAndPermissionsGenerator:hs-office-relation-rbac-insert-trigger endDelimiter:--//
-- ----------------------------------------------------------------------------

/*
    Creates the roles, grants and permission for the AFTER INSERT TRIGGER.
 */

create or replace procedure hs_office.relation_build_rbac_system(
    NEW hs_office.relation
)
    language plpgsql as $$

declare
    newHolderPerson hs_office.person;
    newAnchorPerson hs_office.person;
    newContact hs_office.contact;

begin
    call rbac.enterTriggerForObjectUuid(NEW.uuid);

    SELECT * FROM hs_office.person WHERE uuid = NEW.holderUuid    INTO newHolderPerson;
    assert newHolderPerson.uuid is not null, format('newHolderPerson must not be null for NEW.holderUuid = %s of hs_office.relation', NEW.holderUuid);

    SELECT * FROM hs_office.person WHERE uuid = NEW.anchorUuid    INTO newAnchorPerson;
    assert newAnchorPerson.uuid is not null, format('newAnchorPerson must not be null for NEW.anchorUuid = %s of hs_office.relation', NEW.anchorUuid);

    SELECT * FROM hs_office.contact WHERE uuid = NEW.contactUuid    INTO newContact;
    assert newContact.uuid is not null, format('newContact must not be null for NEW.contactUuid = %s of hs_office.relation', NEW.contactUuid);


    perform rbac.defineRoleWithGrants(
        hs_office.relation_OWNER(NEW),
            permissions => array['DELETE'],
            incomingSuperRoles => array[rbac.global_ADMIN()],
            subjectUuids => array[rbac.currentSubjectUuid()]
    );

    perform rbac.defineRoleWithGrants(
        hs_office.relation_ADMIN(NEW),
            permissions => array['UPDATE'],
            incomingSuperRoles => array[hs_office.relation_OWNER(NEW)]
    );

    perform rbac.defineRoleWithGrants(
        hs_office.relation_AGENT(NEW),
            incomingSuperRoles => array[hs_office.relation_ADMIN(NEW)]
    );

    perform rbac.defineRoleWithGrants(
        hs_office.relation_TENANT(NEW),
            permissions => array['SELECT'],
            incomingSuperRoles => array[
            	hs_office.contact_ADMIN(newContact),
            	hs_office.relation_AGENT(NEW)],
            outgoingSubRoles => array[
            	hs_office.contact_REFERRER(newContact),
            	hs_office.person_REFERRER(newAnchorPerson),
            	hs_office.person_REFERRER(newHolderPerson)]
    );

    IF NEW.type = 'REPRESENTATIVE' THEN
        call rbac.grantRoleToRole(hs_office.person_OWNER(newAnchorPerson), hs_office.relation_ADMIN(NEW));
        call rbac.grantRoleToRole(hs_office.relation_AGENT(NEW), hs_office.person_ADMIN(newAnchorPerson));
        call rbac.grantRoleToRole(hs_office.relation_OWNER(NEW), hs_office.person_ADMIN(newHolderPerson));
    ELSE
        call rbac.grantRoleToRole(hs_office.relation_AGENT(NEW), hs_office.person_ADMIN(newHolderPerson));
        call rbac.grantRoleToRole(hs_office.relation_OWNER(NEW), hs_office.person_ADMIN(newAnchorPerson));
    END IF;

    call rbac.leaveTriggerForObjectUuid(NEW.uuid);
end; $$;

/*
    AFTER INSERT TRIGGER to create the role+grant structure for a new hs_office.relation row.
 */

create or replace function hs_office.relation_build_rbac_system_after_insert_tf()
    returns trigger
    language plpgsql
    strict as $$
begin
    call hs_office.relation_build_rbac_system(NEW);
    return NEW;
end; $$;

create trigger build_rbac_system_after_insert_tg
    after insert on hs_office.relation
    for each row
execute procedure hs_office.relation_build_rbac_system_after_insert_tf();
--//


-- ============================================================================
--changeset RolesGrantsAndPermissionsGenerator:hs-office-relation-rbac-update-trigger endDelimiter:--//
-- ----------------------------------------------------------------------------

/*
    Called from the AFTER UPDATE TRIGGER to re-wire the grants.
 */

create or replace procedure hs_office.relation_update_rbac_system(
    OLD hs_office.relation,
    NEW hs_office.relation
)
    language plpgsql as $$
begin

    if NEW.contactUuid is distinct from OLD.contactUuid then
        delete from rbac.grant g where g.grantedbytriggerof = OLD.uuid;
        call hs_office.relation_build_rbac_system(NEW);
    end if;
end; $$;

/*
    AFTER UPDATE TRIGGER to re-wire the grant structure for a new hs_office.relation row.
 */

create or replace function hs_office.relation_update_rbac_system_after_update_tf()
    returns trigger
    language plpgsql
    strict as $$
begin
    call hs_office.relation_update_rbac_system(OLD, NEW);
    return NEW;
end; $$;

create trigger update_rbac_system_after_update_tg
    after update on hs_office.relation
    for each row
execute procedure hs_office.relation_update_rbac_system_after_update_tf();
--//


-- ============================================================================
--changeset InsertTriggerGenerator:hs-office-relation-rbac-GRANTING-INSERT-PERMISSION endDelimiter:--//
-- ----------------------------------------------------------------------------

-- granting INSERT permission to hs_office.person ----------------------------

/*
    Grants INSERT INTO hs_office.relation permissions to specified role of pre-existing hs_office.person rows.
 */
do language plpgsql $$
    declare
        row hs_office.person;
    begin
        call base.defineContext('create INSERT INTO hs_office.relation permissions for pre-exising hs_office.person rows');

        FOR row IN SELECT * FROM hs_office.person
            -- unconditional for all rows in that table
            LOOP
                call rbac.grantPermissionToRole(
                        rbac.createPermission(row.uuid, 'INSERT', 'hs_office.relation'),
                        hs_office.person_ADMIN(row));
            END LOOP;
    end;
$$;

/**
    Grants hs_office.relation INSERT permission to specified role of new person rows.
*/
create or replace function hs_office.relation_grants_insert_to_person_tf()
    returns trigger
    language plpgsql
    strict as $$
begin
    -- unconditional for all rows in that table
        call rbac.grantPermissionToRole(
            rbac.createPermission(NEW.uuid, 'INSERT', 'hs_office.relation'),
            hs_office.person_ADMIN(NEW));
    -- end.
    return NEW;
end; $$;

-- ..._z_... is to put it at the end of after insert triggers, to make sure the roles exist
create trigger relation_z_grants_after_insert_tg
    after insert on hs_office.person
    for each row
execute procedure hs_office.relation_grants_insert_to_person_tf();


-- ============================================================================
--changeset InsertTriggerGenerator:hs-office-relation-rbac-CHECKING-INSERT-PERMISSION endDelimiter:--//
-- ----------------------------------------------------------------------------

/**
    Checks if the user respectively the assumed roles are allowed to insert a row to hs_office.relation.
*/
create or replace function hs_office.relation_insert_permission_check_tf()
    returns trigger
    language plpgsql as $$
declare
    superObjectUuid uuid;
begin
    -- check INSERT permission via direct foreign key: NEW.anchorUuid
    if rbac.hasInsertPermission(NEW.anchorUuid, 'hs_office.relation') then
        return NEW;
    end if;

    raise exception '[403] insert into hs_office.relation values(%) not allowed for current subjects % (%)',
            NEW, base.currentSubjects(), rbac.currentSubjectOrAssumedRolesUuids();
end; $$;

create trigger relation_insert_permission_check_tg
    before insert on hs_office.relation
    for each row
        execute procedure hs_office.relation_insert_permission_check_tf();
--//


-- ============================================================================
--changeset RbacIdentityViewGenerator:hs-office-relation-rbac-IDENTITY-VIEW endDelimiter:--//
-- ----------------------------------------------------------------------------

call rbac.generateRbacIdentityViewFromProjection('hs_office.relation',
    $idName$
             (select idName from hs_office.person_iv p where p.uuid = anchorUuid)
             || '-with-' || target.type || '-'
             || (select idName from hs_office.person_iv p where p.uuid = holderUuid)
    $idName$);
--//


-- ============================================================================
--changeset RbacRestrictedViewGenerator:hs-office-relation-rbac-RESTRICTED-VIEW endDelimiter:--//
-- ----------------------------------------------------------------------------
call rbac.generateRbacRestrictedView('hs_office.relation',
    $orderBy$
        (select idName from hs_office.person_iv p where p.uuid = target.holderUuid)
    $orderBy$,
    $updates$
        contactUuid = new.contactUuid
    $updates$);
--//


-- ============================================================================
--changeset RbacRbacSystemRebuildGenerator:hs-office-relation-rbac-rebuild endDelimiter:--//
-- ----------------------------------------------------------------------------

-- HOWTO: Rebuild RBAC-system for table hs_office.relation after changing its RBAC specification.
--
-- begin transaction;
--  call base.defineContext('re-creating RBAC for table hs_office.relation', null, <<insert executing global admin user here>>);
--  call hs_office.relation_rebuild_rbac_system();
-- commit;
--
-- How it works:
-- 1. All grants previously created from the RBAC specification of this table will be deleted.
--    These grants are identified by `hs_office.relation.grantedByTriggerOf IS NOT NULL`.
--    User-induced grants (`hs_office.relation.grantedByTriggerOf IS NULL`) are NOT deleted.
-- 2. New role types will be created, but existing role types which are not specified anymore,
--    will NOT be deleted!
-- 3. All newly specified grants will be created.
--
-- IMPORTANT:
-- Make sure not to skip any previously defined role-types or you might break indirect grants!
-- E.g. If, in an updated version of the RBAC system for a table, you remove the AGENT role type
-- and now directly grant the TENANT role to the ADMIN role, all external grants to the AGENT role
-- of this table would be in a dead end.

create or replace procedure hs_office.relation_rebuild_rbac_system()
    language plpgsql as $$
DECLARE
    DECLARE
    row hs_office.relation;
    grantsAfter numeric;
    grantsBefore numeric;
BEGIN
    SELECT count(*) INTO grantsBefore FROM rbac.grant;

    FOR row IN SELECT * FROM hs_office.relation LOOP
            -- first delete all generated grants for this row from the previously defined RBAC system
            DELETE FROM rbac.grant g
                   WHERE g.grantedbytriggerof = row.uuid;

            -- then build the grants according to the currently defined RBAC rules
            CALL hs_office.relation_build_rbac_system(row);
        END LOOP;

    select count(*) into grantsAfter from rbac.grant;

    -- print how the total count of grants has changed
    raise notice 'total grant count before -> after: % -> %', grantsBefore, grantsAfter;
END;
$$;
--//