-- apply changes
create table audit_log (
  sys_pk                        bigint generated by default as identity not null,
  deleted_on                    timestamp,
  current_approval_level        integer default 0 not null,
  required_approval_levels      integer default 0 not null,
  deleted                       boolean default false not null,
  version                       integer default 1 not null,
  created_at                    timestamp default 'now()' not null,
  modified_at                   timestamp default 'now()' not null,
  deleted_by                    varchar(255),
  approval_status               varchar(8) default 'APPROVED' not null,
  tags                          varchar[] default '{}' not null,
  comments                      jsonb default '[]' not null,
  tenant_id                     varchar(255) not null,
  audit_type                    varchar(7) not null,
  entity                        varchar(255) not null,
  unique_identifier             varchar(255) not null,
  data                          jsonb not null,
  changes                       jsonb not null,
  created_by                    varchar(255) not null,
  modified_by                   varchar(255) not null,
  constraint ck_audit_log_approval_status check ( approval_status in ('PENDING','APPROVED','REJECTED')),
  constraint ck_audit_log_audit_type check ( audit_type in ('CREATE','UPDATE','DELETE','VIEW','APPROVE','REJECT')),
  constraint pk_audit_log primary key (sys_pk)
);

create table data_model (
  sys_pk                        bigint generated by default as identity not null,
  deleted_on                    timestamp,
  current_approval_level        integer default 0 not null,
  required_approval_levels      integer default 0 not null,
  deleted                       boolean default false not null,
  version                       integer default 1 not null,
  created_at                    timestamp default 'now()' not null,
  modified_at                   timestamp default 'now()' not null,
  deleted_by                    varchar(255),
  approval_status               varchar(8) default 'APPROVED' not null,
  tags                          varchar[] default '{}' not null,
  comments                      jsonb default '[]' not null,
  tenant_id                     varchar(255) not null,
  unique_identifier             varchar(255) not null,
  entity_name                   varchar(255) not null,
  data                          jsonb not null,
  created_by                    varchar(255) not null,
  modified_by                   varchar(255) not null,
  constraint ck_data_model_approval_status check ( approval_status in ('PENDING','APPROVED','REJECTED')),
  constraint entity_unique_id unique (entity_name,unique_identifier,tenant_id),
  constraint pk_data_model primary key (sys_pk)
);

create table entity_model (
  sys_pk                        bigint generated by default as identity not null,
  deleted_on                    timestamp,
  current_approval_level        integer default 0 not null,
  required_approval_levels      integer default 0 not null,
  approval_levels               integer default 0 not null,
  deleted                       boolean default false not null,
  version                       integer default 1 not null,
  created_at                    timestamp default 'now()' not null,
  modified_at                   timestamp default 'now()' not null,
  deleted_by                    varchar(255),
  approval_status               varchar(8) default 'APPROVED' not null,
  tags                          varchar[] default '{}' not null,
  comments                      jsonb default '[]' not null,
  tenant_id                     varchar(255) not null,
  name                          varchar(255) not null,
  pre_save_script               varchar(255),
  post_save_script              varchar(255),
  actions                       varchar[] default '{}' not null,
  allowed_fields                varchar[] default '{}' not null,
  allowed_field_types           jsonb default '{}' not null,
  audit_log_fields              varchar[] default '{}' not null,
  preferences                   jsonb default '{}' not null,
  created_by                    varchar(255) not null,
  modified_by                   varchar(255) not null,
  constraint ck_entity_model_approval_status check ( approval_status in ('PENDING','APPROVED','REJECTED')),
  constraint uq_entity_model_name unique (name),
  constraint pk_entity_model primary key (sys_pk)
);

create table job_model (
  sys_pk                        bigint generated by default as identity not null,
  deleted_on                    timestamp,
  current_approval_level        integer default 0 not null,
  required_approval_levels      integer default 0 not null,
  deleted                       boolean default false not null,
  version                       integer default 1 not null,
  created_at                    timestamp default 'now()' not null,
  modified_at                   timestamp default 'now()' not null,
  deleted_by                    varchar(255),
  approval_status               varchar(8) default 'APPROVED' not null,
  tags                          varchar[] default '{}' not null,
  comments                      jsonb default '[]' not null,
  tenant_id                     varchar(255) not null,
  job_name                      varchar(255) not null,
  job_type                      varchar(6) not null,
  job_path                      varchar(255) not null,
  tenants                       varchar[] not null,
  job_frequency_type            varchar(8) not null,
  frequency                     varchar(255) not null,
  created_by                    varchar(255) not null,
  modified_by                   varchar(255) not null,
  constraint ck_job_model_approval_status check ( approval_status in ('PENDING','APPROVED','REJECTED')),
  constraint ck_job_model_job_type check ( job_type in ('SCRIPT','DB')),
  constraint ck_job_model_job_frequency_type check ( job_frequency_type in ('SPECIFIC','EVERY','CRON')),
  constraint uq_job_model_job_name unique (job_name),
  constraint pk_job_model primary key (sys_pk)
);

create table sql_model (
  sys_pk                        bigint generated by default as identity not null,
  deleted_on                    timestamp,
  current_approval_level        integer default 0 not null,
  required_approval_levels      integer default 0 not null,
  sql                           text not null,
  deleted                       boolean default false not null,
  version                       integer default 1 not null,
  created_at                    timestamp default 'now()' not null,
  modified_at                   timestamp default 'now()' not null,
  deleted_by                    varchar(255),
  approval_status               varchar(8) default 'APPROVED' not null,
  tags                          varchar[] default '{}' not null,
  comments                      jsonb default '[]' not null,
  tenant_id                     varchar(255) not null,
  sql_id                        varchar(255) not null,
  entity_name                   varchar(255) not null,
  created_by                    varchar(255) not null,
  modified_by                   varchar(255) not null,
  constraint ck_sql_model_approval_status check ( approval_status in ('PENDING','APPROVED','REJECTED')),
  constraint sql_unique_id unique (entity_name,sql_id,tenant_id),
  constraint pk_sql_model primary key (sys_pk)
);

create table tenant_model (
  sys_pk                        bigint generated by default as identity not null,
  deleted_on                    timestamp,
  current_approval_level        integer default 0 not null,
  required_approval_levels      integer default 0 not null,
  deleted                       boolean default false not null,
  version                       integer default 1 not null,
  created_at                    timestamp default 'now()' not null,
  modified_at                   timestamp default 'now()' not null,
  deleted_by                    varchar(255),
  approval_status               varchar(8) default 'APPROVED' not null,
  tags                          varchar[] default '{}' not null,
  comments                      jsonb default '[]' not null,
  name                          varchar(255) not null,
  domain                        varchar(255) not null,
  preferences                   jsonb not null,
  created_by                    varchar(255) not null,
  modified_by                   varchar(255) not null,
  constraint ck_tenant_model_approval_status check ( approval_status in ('PENDING','APPROVED','REJECTED')),
  constraint uq_tenant_model_name unique (name),
  constraint pk_tenant_model primary key (sys_pk)
);

-- foreign keys and indices
create index if not exists ix_audit_log_audit_type_entity_unique_identifier_tenant_i_1 on audit_log (audit_type,entity,unique_identifier,tenant_id,created_by);
create index audit_log_values_idx on audit_log using GIN (data);
create index audit_log_changes_idx on audit_log using GIN (changes);
create index data_jsonb_idx on data_model using GIN (data) ;