const readline = require('readline')
const process = require('process')


exports.up = function (knex) {
    return knex.schema.hasColumn('signups', 'absent').then(absent => {
        if (!absent) {

            const r1 = readline.createInterface({
                input: process.stdin,
                output: process.stdout
            })
            return new Promise((res, rej) => {
                return knex.schema.dropTable('signups').then(_ => {
                    return knex.schema.createTable('signups', function (table) {
                        table.increments('id').primary()
                        table.unique(['raidid', 'characterid'])
                        table.integer('raidid')
                        table.foreign('raidid').references('id').inTable('raids').onDelete('CASCADE')
                        table.integer('characterid')
                        table.foreign('characterid').references('id').inTable('characters').onDelete('CASCADE')
                        table.boolean('benched').defaultTo('false')
                        table.boolean('late')
                        table.boolean('absent').defaultTo(false)
                        table.timestamp('timestamp').defaultTo(knex.fn.now())
                        table.string('memo').nullable()
                        res()
                    }).catch(rej)
                })
            })
        }
    })
}


exports.down = function (knex) {
    return knex.schema.table('signups', function (table) {
        table.dropColumn('absent')
    })
}