// /* istanbul ignore file */
exports.up = async (knex) => {
  await knex.schema.createTable('comments', (table) => {
    table.string('id', 10).primary()
    table
      .string('streamId', 10)
      .references('id')
      .inTable('streams')
      .notNullable()
      .index()
      .onDelete('cascade')
    table.string('authorId', 10).references('id').inTable('users').notNullable().index()
    // table.timestamp( 'createdAt' ).defaultTo( knex.fn.now( ) )
    table.specificType('createdAt', 'TIMESTAMPTZ(3)').defaultTo(knex.fn.now())
    table.specificType('updatedAt', 'TIMESTAMPTZ(3)').defaultTo(knex.fn.now())
    table.text('text')
    table.text('screenshot')
    table.jsonb('data')
    table.boolean('archived').defaultTo(false).notNullable()
    table
      .string('parentComment', 10)
      .references('id')
      .inTable('comments')
      .defaultTo(null)
  })

  // Comments >- -< Stream or Commit or Object or Comment
  await knex.schema.createTable('comment_links', (table) => {
    table
      .string('commentId', 10)
      .references('id')
      .inTable('comments')
      .onDelete('cascade')
    //foreign keys are not enforced cause of the multiple table that can be referenced
    table.string('resourceId').notNullable()
    table
      .string('resourceType')
      .notNullable()
      .checkIn(['stream', 'commit', 'object', 'comment'])
  })

  // Tracks when user has last seen a specific comment thread.
  await knex.schema.createTable('comment_views', (table) => {
    table
      .string('commentId', 10)
      .references('id')
      .inTable('comments')
      .onDelete('cascade')
    table.string('userId', 10).references('id').inTable('users')
    table.specificType('viewedAt', 'TIMESTAMPTZ(3)').defaultTo(knex.fn.now())

    table.primary(['commentId', 'userId'])
  })
}

exports.down = async (knex) => {
  await knex.schema.dropTableIfExists('comment_views')
  await knex.schema.dropTableIfExists('comment_links')
  await knex.schema.dropTableIfExists('comments')
}