import { BaseSchema } from '@adonisjs/lucid/schema'

/**
 * Files of uploaders whose bodies are not fetched right away (ngPost, see
 * CONCEPT.md D28): one row per file, from the headers alone. The row keeps
 * the article range, so the file can be found again, and is the queue for
 * worker:deferred, which fetches one body per file.
 */
export default class extends BaseSchema {
  async up() {
    this.schema.createTable('deferred_files', (table) => {
      table.bigIncrements('id')
      table.string('file_key', 40).notNullable().unique()
      // File name from the subject (random for ngPost).
      table.text('name').notNullable()
      table.text('subject').notNullable()
      table.text('poster').notNullable()
      // Article numbers are counted in the group where the file was first seen.
      table.text('group_name').notNullable()
      table.bigInteger('first_article').notNullable()
      table.text('first_message_id').notNullable()
      table.bigInteger('last_article').notNullable()
      table.integer('article_count').notNullable()
      table.bigInteger('bytes').notNullable()
      table.timestamp('posted_at', { useTz: true })
      table.timestamp('first_seen_at', { useTz: true }).notNullable()
      table.timestamp('last_seen_at', { useTz: true }).notNullable()
      // pending → sampled (one body read) or expanded (sent to the body queue) or failed.
      table.string('status', 16).notNullable().defaultTo('pending')
      table.timestamp('processed_at', { useTz: true })
      // From the sampled body.
      table.text('yenc_name')
      table.bigInteger('size')
      table.integer('total_parts')
      table.integer('sampled_part')
      table.string('content_type', 16)
      table.boolean('encrypted')
      table.text('error')
      table.index(['status', 'last_seen_at'])
      table.index(['first_seen_at'])
    })
  }

  async down() {
    this.schema.dropTable('deferred_files')
  }
}