const climateArrayFormatting = require("./../util/climateArrayFormatting.js");
const { takeRightWhile } = require("lodash");

module.exports = async (dbConn) => {
    const regions = await dbConn.query(
        `SELECT regions.id AS region_id,
                regions.region AS name,
                countries.country AS country,
                regions.description AS description,
                rcma.temperature_mean_max AS temperature_mean_max,
                rcma.precipitation AS precipitation,
                rcma.rain_days AS rain_days,
                rcma.sun_hours AS sun_hours,
                regions_byt.average_per_day_costs AS average_per_day_costs,
                regions_byt.accommodation_costs AS accommodation_costs,
                regions_byt.food_costs AS food_costs,
                regions_byt.water_costs AS water_costs,
                regions_byt.local_transportation_costs AS local_transportation_costs,
                regions_byt.entertainment_costs AS entertainment_costs,
                regions_byt.alcohol_costs AS alcohol_costs
        FROM regions
        LEFT JOIN countries ON regions.country_id = countries.id
        LEFT JOIN (SELECT rcma.region_id, 
                GROUP_CONCAT(IFNULL(rcma.temperature_mean,"") ORDER BY rcma.month SEPARATOR ', ') AS temperature_mean, 
                GROUP_CONCAT(IFNULL(rcma.temperature_mean_min, "") ORDER BY rcma.month SEPARATOR ', ') AS temperature_mean_min, 
                GROUP_CONCAT(IFNULL(rcma.temperature_mean_max, "") ORDER BY rcma.month SEPARATOR ', ') AS temperature_mean_max, 
                GROUP_CONCAT(IFNULL(rcma.precipitation, "") ORDER BY rcma.month SEPARATOR ', ') AS precipitation, 
                GROUP_CONCAT(IFNULL(rcma.rain_days, "") ORDER BY rcma.month SEPARATOR ', ') AS rain_days, 
                GROUP_CONCAT(IFNULL(rcma.sun_hours, "") ORDER BY rcma.month SEPARATOR ', ') AS sun_hours, 
                GROUP_CONCAT(IFNULL(rcma.humidity, "") ORDER BY rcma.month SEPARATOR ', ') AS humidity
              FROM region_climate_monthly_avg AS rcma
              GROUP BY rcma.region_id) rcma ON rcma.region_id = regions.id
        LEFT JOIN regions_byt ON regions.id = regions_byt.region_id
        WHERE regions_byt.travelstyle = 1`
    );

    for (k = 0; k < regions.length; k++) {
        //regions[k].temperature_mean = climateArrayFormatting(regions[k].temperature_mean);
        //regions[k].temperature_mean_min = climateArrayFormatting(regions[k].temperature_mean_min);
        regions[k].temperature_mean_max = climateArrayFormatting(regions[k].temperature_mean_max);
        regions[k].precipitation = climateArrayFormatting(regions[k].precipitation);
        regions[k].rain_days = climateArrayFormatting(regions[k].rain_days);
        regions[k].sun_hours = climateArrayFormatting(regions[k].sun_hours);
        //regions[k].humidity = climateArrayFormatting(regions[k].humidity);

    }
    console.log(regions.filter(region => region.rain_days === null))
    return regions.map(region => {
        const emptyArr = Array.from({ length: 12 }, () => null)
        if (region.temperature_mean_max === null) region.temperature_mean_max = emptyArr
        if (region.precipitation === null) region.precipitation = emptyArr
        if (region.rain_days === null) region.rain_days = emptyArr
        if (region.sun_hours === null) region.sun_hours = emptyArr
        return region
    });
};