const scenarios = require('../scenario/scenario.js');
const _ = require('underscore');

const helptext = `The \`!scenario\` command can be used to select a scenario to play. use \`!scenario\` to list all options, and \`!scenario <name>\` to select a particular scenario.`;

function s(context) {
  return new Promise((resolve, reject) => {
    if(context.isHelpRequest) {
      context.message.reply(helptext)
        .then(() => {
          console.info(`[${context.id}] ? scene`);
          resolve();
        }).catch(err => reject(err));
    } else if(context.args) {
      context.storyline = context.args;
      scenarios.init(context)
        .then(context => {
          console.info(`[${context.id}] Initiated scenario ${context.args}`);
          resolve();
        })
        .catch(err => reject(err));
    } else {
      let text = '```\n';
      _.each(scenarios.list(context), scenario => text += `${scenario}\n`);
      text += '```';
      context.message.reply(text)
        .then(() => {
          console.info(`[${context.id}] Listed scenarios`);
          resolve();
        })
        .catch(err => reject(err));
    }
  });
}

module.exports = commands => {
  commands.scenario = s;
};