const router = require("express").Router();
const _ = require('lodash')
const getSearchPresets = require("../models/getSearchPresets.js");
const base64 = require("../util/base64.js")
const sas = require("../util/scoreAndSearch.js")


module.exports = dbConn => {
  router.get("/api/v1/search", searchHandler(dbConn));
  router.get("/api/v1/search/presets", presetHandler(dbConn));

  return router;
};

function presetHandler(dbConn) {
  return function (req, res) {
    getSearchPresets(dbConn).then(presets => {
      res.json(presets)
    }).catch(error => {
      // TODO error handling
    })
  }
}

function searchHandler(dbConn) {
  const scoreAndSearch = sas(dbConn)
  return function (req, res) {
    let response = {}

    response.meta = {
      params: req.params,
      query: req.query,
      headers: req.headers
    }

    let q = req.query.q ? base64.base64ToObj(req.query.q) : req.query
    console.log('Q:', q)

    let scoreQueryObj = {}
    if (q.temperature) scoreQueryObj['temperature_mean_max'] = q.temperature
    if (q.temperature_mean_max) scoreQueryObj['temperature_mean_max'] = q.temperature_mean_max
    if (q.precipitation) scoreQueryObj['precipitation'] = q.precipitation
    if (q.rain_days) scoreQueryObj['rain_days'] = q.rain_days
    if (q.sun_hours) scoreQueryObj['sun_hours'] = q.sun_hours
    if (q.accommodation_costs) scoreQueryObj['accommodation_costs'] = q.accomodation_costs

    //console.log(scoreQueryObj)

    if (_.isEmpty(scoreQueryObj)) {
      res.status(400).send('provide at least one search parameter.');
    }
    scoreAndSearch(q.from, q.to, scoreQueryObj).then(searchResults => {

      // TODO hier könnten Suchergebnisse gefiltert werden: für Textsuche oder Exludes....
      response.data = searchResults
      res.json(response)
    }).catch(e => {
      // TODO error handling
      console.log(e)
      res.json(e.message)
    })
  }
}