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

/**
 * Files cut off by a range's edge (REBUILD.md, fragments): one row per file
 * and range, with that range's segments; merged when the neighbouring range
 * is done, then written as a chunk.
 */
export default class extends BaseSchema {
  async up() {
    this.schema.createTable('fragments', (table) => {
      table.bigIncrements('id')
      table.bigInteger('range_id').notNullable()
      table.string('file_key', 40).notNullable()
      // The file's first article in this range.
      table.bigInteger('article_number').notNullable()
      table.integer('segments').notNullable()
      table.jsonb('fragment').notNullable()
      table.index(['file_key'])
      table.index(['range_id'])
    })
  }

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