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Original file line number Diff line number Diff line change
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import { Knex } from 'knex'

type DupGroupRow = {
nome_norm: string
sigla_norm: string
keep_id: number
ids: number[]
qtde: number
}

export async function run(knex: Knex): Promise<void> {
await knex.transaction(async trx => {
// Agrupa por nome e sigla normalizados; mantém o menor id
const dupGroups = (await trx('herbarios')
.select([
trx.raw('TRIM(LOWER(nome)) as nome_norm'),
trx.raw('TRIM(LOWER(COALESCE(sigla, \'\'))) as sigla_norm'),
trx.raw('MIN(id)::int as keep_id'),
trx.raw('ARRAY_AGG(id ORDER BY id) as ids'),
trx.raw('COUNT(*)::int as qtde')
])
.groupByRaw('TRIM(LOWER(nome)), TRIM(LOWER(COALESCE(sigla, \'\')))')
.havingRaw('COUNT(*) > 1')) as unknown as DupGroupRow[]

if (!dupGroups.length) return

const pairs: Array<{ keep_id: number; drop_id: number }> = []

for (const g of dupGroups) {
const keepId = Number(g.keep_id)
const ids = (g.ids ?? []).map(n => Number(n)).filter(Number.isFinite)

for (const id of ids) {
if (id !== keepId) pairs.push({ keep_id: keepId, drop_id: id })
}
}

if (!pairs.length) return

await trx.raw('DROP TABLE IF EXISTS herbario_merge')

await trx.schema.createTable('herbario_merge', table => {
table.integer('keep_id').notNullable()
table.integer('drop_id').notNullable().primary()
})

await trx('herbario_merge').insert(pairs)

// Atualiza tombos.entidade_id
await trx.raw(`
UPDATE tombos t
SET entidade_id = m.keep_id
FROM herbario_merge m
WHERE t.entidade_id = m.drop_id
`)

// Atualiza remessas
await trx.raw(`
UPDATE remessas r
SET herbario_id = m.keep_id
FROM herbario_merge m
WHERE r.herbario_id = m.drop_id
`)

await trx.raw(`
UPDATE remessas r
SET entidade_destino_id = m.keep_id
FROM herbario_merge m
WHERE r.entidade_destino_id = m.drop_id
`)

// Atualiza usuarios.herbario_id
await trx.raw(`
UPDATE usuarios u
SET herbario_id = m.keep_id
FROM herbario_merge m
WHERE u.herbario_id = m.drop_id
`)

// Remove os herbários duplicados
await trx.raw(`
DELETE FROM herbarios h
USING herbario_merge m
WHERE h.id = m.drop_id
`)

await trx.schema.dropTable('herbario_merge')
})
}
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