/**
 * Interface principal do retorno contendo metadados do banco:
 * tabelas, views e procedures.
 */
export interface LogDatabaseSchemaInterface {
  message?: string;
  data: {  
    tables: TableMetadata[];
    views: ViewMetadata[];
    primary_keys: PrimaryKeyMetadata[];
    foreign_keys: ForeignKeyMetadata[];
    indexes: IndexMetadata[];
    procedures: ProcedureMetadata[];
    triggers: TriggerMetadata[];
  }
}

/**
 * Estrutura de cada item dentro de "tables".
 */
export interface TableMetadata {
  TABLE_NAME: string;
  FIELD_NAME: string;
  NULLABLE: string;          // Vem como string ("NULL   ")
  FIELD_TYPE: string;
  DEFAULT_VALUE: string | null;
  DESCRIPTION: string | null;
}

/**
 * Estrutura de cada item dentro de "primary_keys".
 */
export interface PrimaryKeyMetadata {
  TABLE_NAME: string;
  FIELD_NAME: string;
  CONSTRAINT_NAME: string;
}


/**
 * Estrutura de cada item dentro de "indexes".
 */
export interface IndexMetadata {
  TABLE_NAME: string;
  INDEX_NAME: string;
  FIELD_NAME: string;
  UNIQUENESS: string;
  SORT_ORDER: string;
  DESCRIPTION: string | null;
}

/**
 * Estrutura de cada item dentro de "foreign_keys".
 */
export interface ForeignKeyMetadata {
  TABLE_NAME: string;
  CONSTRAINT_NAME: string;
  FIELD_NAME: string;
  REF_CONSTRAINT_NAME: string;
  REFERENCED_TABLE: string;
}

/**
 * Estrutura de cada item dentro de "views".
 */
export interface ViewMetadata {
  VIEW_NAME: string;
  VIEW_DEFINITION: string;
}

/**
 * Estrutura de cada item dentro de "views".
 */
export interface TriggerMetadata {
  TRIGGER_NAME: string;
  TABLE_NAME: string | null,
  SEQUENCE: number,
  TYPE: number,
  SOURCE_CODE: string;
  STATUS: string
}

/**
 * Estrutura de cada item dentro de "procedures".
 */
export interface ProcedureMetadata {
  PROCEDURE_NAME: string;
  SOURCE_CODE: string;
}