/** Informe de paridad tras migrar artistas, versiones y representaciones. */

import pg from 'pg';

const cliente = new pg.Client({
	connectionString: process.env.DATABASE_URL,
	query_timeout: 30_000
});
await cliente.connect();

const {
	rows: [n]
} = await cliente.query(`
	select
		(select count(*) from cancion where version_de_id is null)::int as canciones,
		(select count(*) from cancion where version_de_id is not null)::int as versiones,
		(select count(*) from cancion where codigo is null)::int as canciones_sin_codigo,
		(select count(*) from artista)::int as artistas,
		(select count(*) from cancion_persona where rol = 'interprete')::int as creditos_anteriores,
		(select count(*) from cancion_interprete)::int as creditos_nuevos,
		(select count(*) from cancion_audio where uso = 'master')::int as masters,
		(select count(*) from cancion_audio where uso = 'stream')::int as streams,
		(select count(*) from cancion c where c.estado = 'publicado'
			and not exists (select 1 from cancion_audio ca where ca.cancion_id = c.id and ca.uso = 'stream'))::int
			as publicadas_sin_stream
`);

const { rows: problemas } = await cliente.query(`
	select 'intérprete sin migrar' as tipo, c.slug as referencia
	from cancion_persona cp
	join cancion c on c.id = cp.cancion_id
	where cp.rol = 'interprete'
		and not exists (select 1 from cancion_interprete ci where ci.cancion_id = cp.cancion_id)
	union all
	select 'publicación sin intérpretes', slug from cancion c
	where c.estado = 'publicado' and not exists
		(select 1 from cancion_interprete ci where ci.cancion_id = c.id)
	union all
	select 'venta sin entrega MP3', slug from cancion c
	where c.estado = 'publicado' and c.ala_venta and not exists
		(select 1 from cancion_audio ca where ca.cancion_id = c.id and ca.uso in ('descarga','master') and ca.formato = 'mp3')
	union all
	select 'artista sin código', slug from artista where codigo is null or btrim(codigo) = ''
	union all
	select 'versión sin código', slug from cancion
		where version_de_id is not null and (version_codigo is null or btrim(version_codigo) = '')
	order by tipo, referencia
`);

console.table(n);
if (problemas.length) console.table(problemas);
await cliente.end();

if (problemas.length || n.canciones_sin_codigo || n.publicadas_sin_stream) {
	console.error('La migración todavía no cumple la paridad requerida.');
	process.exit(1);
}
console.log('Dominio musical íntegro: códigos, créditos y streams completos.');