const {ChainedMap} = require('./Chains')
const Rule = require('./Rule')

module.exports = class extends ChainedMap {
  constructor(parent) {
    super(parent)

    // @chainup
    this.output = this.parent.output

    this.rules = new ChainedMap(this)
  }

  rule(name) {
    if (!this.rules.has(name)) {
      this.rules.set(name, new Rule(this))
    }

    return this.rules.get(name)
  }

  toConfig() {
    return this.clean(
      Object.assign(this.entries() || {}, {
        rules: this.rules.values().map(r => r.toConfig()),
      })
    )
  }

  merge(obj) {
    Object.keys(obj).forEach(key => {
      const value = obj[key]

      switch (key) {
        case 'rule': {
          return Object.keys(value).forEach(name =>
            this.rule(name).merge(value[name])
          )
        }

        default: {
          this.set(key, value)
        }
      }
    })

    return this
  }
}