const path = require('path')
const fs = require('fs')

exports.teamsnapMembersSortLineupAvailabilityLastName = (a, b) => {
  status_code_sort = [
    teamsnap.AVAILABILITIES.YES,
    teamsnap.AVAILABILITIES.MAYBE,
    teamsnap.AVAILABILITIES.NO,
    teamsnap.AVAILABILITIES.NONE,
  ];

  if (a.benchcoach.eventLineupEntry != null && b.benchcoach.eventLineupEntry != null){
    return a.benchcoach.eventLineupEntry.sequence - b.benchcoach.eventLineupEntry.sequence
  }
  else if (a.benchcoach.eventLineupEntry != null && b.benchcoach.eventLineupEntry == null){
    return -1
  }
  else if (a.benchcoach.eventLineupEntry == null && b.benchcoach.eventLineupEntry != null) {
    return 1
  }
  else {
    return teamsnapMembersSortAvailabilityLastName(a,b)
  }
};

teamsnapMembersSortAvailabilityLastName = (a, b) => {
  status_code_sort = [
    teamsnap.AVAILABILITIES.YES,
    teamsnap.AVAILABILITIES.MAYBE,
    teamsnap.AVAILABILITIES.NO,
    teamsnap.AVAILABILITIES.NONE,
  ];

    a_sort = status_code_sort.indexOf(a.benchcoach.availability?.statusCode);
    b_sort = status_code_sort.indexOf(b.benchcoach.availability?.statusCode);
    if (a_sort > b_sort) {
      return 1;
    }
    if (a_sort < b_sort) {
      return -1;
    }
    if (a_sort == b_sort) {
      if (a.lastName < b.lastName) {
        return -1;
      }
    if (a.lastName > b.lastName) {
      return 1;
    }
  }
  }
exports.teamsnapMembersSortAvailabilityLastName = teamsnapMembersSortAvailabilityLastName

exports.initTeamsnap = (req, res, next) => {
  if (!teamsnap.isAuthed()) {
    teamsnap.init(process.env["TEAMSNAP_CLIENT_ID"]);
    teamsnap.auth(req.user.accessToken);
  }
  teamsnap.loadCollections((err) => {
    teamsnap.enablePersistence();
    next(req, res, next);
  });
};

exports.teamsnapLog = (method, types, id, req, message="") => {
  console.log(
    '\x1b[33mTeamSnap:\x1b[0m', 
    `${method} for \x1b[33m\[${types}\]\x1b[0m on ${id}`, 
    `on url ${req.url}`,
    `"${message}"`
    )
    return;
}

exports.tsPromise = (func_name, params) => {
    return new Promise(function(resolve, reject) {
        teamsnap.bulkLoad(
          params, 
          (err, data) => {
            console.log();
            if (err !== null) {
              reject(err);
            }
            else {
              resolve(data);
            }
          }
        )
        ;
    });
}

exports.teamsnapCallback = (err,items) => {
    if (err) {
      console.log(err.message);
      throw new Error(err)
    }
    return items;
  }

exports.teamsnapFailure = (err, next) => {
    if (err) {
      console.log(err.message);
    }
    next(err);
  }

const getPluralType = (type) =>{
  // There are some instances where a type is not
  // in the list of teamsnap.types, so a plural
  // is not generated in the lookup. this is a
  // kludge around that. (specifically availabilitySummary)
  plural = teamsnap.getPluralType(type) || (function() {
    switch (type.slice(-1)) {
      case 'y':
        return type.slice(0, -1) + 'ies';
      case 's':
        return type + 'es';
      default:
        return type + 's';
    }
  })();
  return plural
}

exports.groupTeamsnapItems = (items, types = [], params = {}) => {
    const result = {};
    items.forEach(item => {
      const type = item.type
      const type_plural = getPluralType(type)
      if ((types.length > 0 && types.includes(type)) || (types.length == 0)) {
        if (!result[type_plural]) result[type_plural] = []
        result[type_plural].push(item)
      }
    })
    return result;
  }

exports.embeddedSvgFromPath = (svg_path, additional_classes = "") => {
    const iconStaticPaths = {
      "/teamsnap-ui/assets":path.join(__dirname, "/../../node_modules/@teamsnap/teamsnap-ui/src/assets"),
      "/bootstrap-icons":path.join(__dirname, "/../../node_modules/bootstrap-icons/icons"),
      "/media":path.join(__dirname, "/../public/media")
    }
  
    for (const [key, value] of Object.entries(iconStaticPaths)) {
      if (svg_path.startsWith(key)) {
        svg_path = svg_path.replace(key, value)
      }
    }
    
    const svg = fs.readFileSync(`${svg_path}`, 'utf8');

    svgRegExWithClass = new RegExp(/<svg(.*)class="(.*?)"(.*)>/)
    svgRegExWithoutClass = new RegExp(/<svg(.*?)>/)

    if (svgRegExWithClass.test(svg)) {
      return svg.replace(svgRegExWithClass, `<svg$1 class="$2 Icon ${additional_classes}"$3>`)
    }
    else if (svgRegExWithoutClass.test(svg)) {
      return svg.replace(svgRegExWithoutClass, `<svg$1 class="Icon ${additional_classes}">`)
    }
    else return svg
  }

exports.parsePositionLabel = (label) => {
    if (label == null) {
      return {
        positionLabelWithoutFlags: null, 
        positionFlags: null
      }
    }
    const pattern = /(?<pos>[A-Z0-9]+)(?:\s\[(?<flags>.[A-z,]+)\])?/g
    const {pos, flags} = pattern.exec(label)?.groups || {}
    const positionLabelWithoutFlags= pos
    const positionFlags = flags?.split(',').map(f=>f.trim()) || []
    return {positionLabelWithoutFlags, positionFlags}
  }

exports.compilePositionLabel = (label, flags) => {
  if (flags == null || flags == '' || flags.lengh == 0) {
    return label
  }
  else {
    const flags_set = new Set(flags.split(',').map(s=>s.trim()))
    return `${label} [${Array.from(flags_set).sort().join(',')}]`
  }
}