const { literal, argument, integer, greedyString } = require('brigadier-commands')

module.exports = {
  register (dispatcher) {
    const node = dispatcher.register(
      literal('cloop')
        .requires(source => source.permissionLevel >= node.permissionLevel)
        .then(
          literal('add')
            .then(
              argument('interval', integer())
                .then(
                  argument('command', greedyString())
                    .executes(this.addCommand)
                )
            )
        )
        .then(
          literal('remove')
            .then(
              argument('index', integer())
                .executes(this.removeCommand)
            )
        )
        .then(
          literal('list')
            .executes(this.listCommand)
        )
        .then(
          literal('clear')
            .executes(this.clearCommand)
        )
    )

    node.description = 'Loops commands in the command core'
    node.permissionLevel = 1
  },

  addCommand (context) {
    const source = context.source
    const bot = source.bot

    const interval = context.getArgument('interval')
    const command = context.getArgument('command')
    bot.cloops.push({ command, interval })

    source.sendFeedback([
      { text: 'Looping command ', ...bot.styles.primary },
      { text: command, ...bot.styles.secondary },
      ' at interval ',
      { text: String(interval), ...bot.styles.secondary }
    ], false)
  },

  removeCommand (context) {
    const source = context.source
    const bot = source.bot

    const idx = context.getArgument('index')
    bot.cloops.splice(idx, 1)

    source.sendFeedback([
      { text: 'Removed cloop ', ...bot.styles.primary },
      { text: String(idx), ...bot.styles.secondary }
    ], false)
  },

  listCommand (context) {
    const source = context.source
    const bot = source.bot

    const msg = [{ text: 'Cloops: \n', ...bot.styles.primary }]
    for (let i = 0; i < bot.cloops.length; i++) {
      if (i !== 0) msg.push('\n')
      msg.push(
        String(i),
        ': ',
        { text: String(bot.cloops[i].command), ...bot.styles.secondary }
      )
    }

    source.sendFeedback(msg, false)
  },

  clearCommand (context) {
    const source = context.source
    const bot = source.bot

    bot.cloops.splice(0, bot.cloops.length)
    source.sendFeedback({ text: 'Cleared cloops', ...bot.styles.primary }, false)
  }
}