CREATE TABLE IF NOT EXISTS public."Adm_T_Approver"
(
    "Id" uuid NOT NULL DEFAULT gen_random_uuid(),
    "TenantId" uuid NULL,
    "DepartmentId" uuid NOT NULL,
    "ApprovalArea" varchar(32) NOT NULL DEFAULT 'Purchase',
    "ApproverUserId" uuid NOT NULL,
    "IsActive" boolean NOT NULL DEFAULT TRUE,
    "CreationTime" timestamp NOT NULL DEFAULT (NOW() AT TIME ZONE 'UTC'),
    "CreatorId" uuid NULL,
    "LastModificationTime" timestamp NULL,
    "LastModifierId" uuid NULL,
    "IsDeleted" boolean NOT NULL DEFAULT FALSE,
    "DeletionTime" timestamp NULL,
    "DeleterId" uuid NULL,
    CONSTRAINT "PK_Adm_T_Approver" PRIMARY KEY ("Id")
);

DO $$
BEGIN
    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'UQ_Adm_T_Approver_TenantId_DepartmentId_ApprovalArea_ApproverUserId') THEN
        ALTER TABLE public."Adm_T_Approver" ADD CONSTRAINT "UQ_Adm_T_Approver_TenantId_DepartmentId_ApprovalArea_ApproverUserId" UNIQUE ("TenantId", "DepartmentId", "ApprovalArea", "ApproverUserId");
    END IF;
END
$$;

DO $$
BEGIN
    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'FK_Adm_T_Approver_DepartmentId') THEN
        ALTER TABLE public."Adm_T_Approver" ADD CONSTRAINT "FK_Adm_T_Approver_DepartmentId" FOREIGN KEY ("DepartmentId") REFERENCES public."Hr_T_Department" ("Id") ON DELETE NO ACTION ON UPDATE NO ACTION;
    END IF;
END
$$;