const { Service } = require('flitter-di')
const LocalHost = require('../classes/metal/LocalHost')
const RemoteHost = require('../classes/metal/RemoteHost')

class hosts extends Service {
    static get services() {
        return [...super.services, 'configs', 'app']
    }

    _running_hosts = []

    get config() {
        return this.configs.get('hosts')
    }

    get(name) {
        const config = this.config[name]
        if ( !config ) {
            throw new Error(`Could not get host ${name}: No such host configured.`)
        }

        config.name = name

        if ( config.type === 'localhost' ) {
            const host = this.app.di().make(LocalHost, config)
            this._running_hosts.push(host)
            return host
        } else if ( config.type === 'ssh' ) {
            const host = this.app.di().make(RemoteHost, config)
            this._running_hosts.push(host)
            return host
        } else {
            throw new Error(`Unknown host type ${config.type} for host ${name}.`)
        }
    }

    close() {
        this._running_hosts.forEach(h => h._cleanup())
    }
}

module.exports = exports = hosts