<?php

class ADBRimoFcp extends TTCrudBaseModel
{
    public int $id;
    public int $netzgebiet_id;
    public ?string $name;
    public string $rimo_id;
    public ?string $label;
    public ?string $building_type;
    public ?string $rimo_ex_state;
    public ?string $rimo_op_state;
    public ?float $gps_lat;
    public ?float $gps_long;
    public int $create;
    public int $edit;

    public static function getRimoFcpStatistics(): array {
        $db = self::getDB();
        $fronkDbName = defined('FRONKDB_DBNAME') ? FRONKDB_DBNAME : 'thetool';
        $addressDbName = defined('ADDRESSDB_DBNAME') ? ADDRESSDB_DBNAME : 'addressdb';

        $sql = "
            -- Use a Common Table Expression (CTE) to pre-calculate counts for each combination of FCP and rimo_type.
            WITH RimoTypeCounts AS (
                SELECT
                    hn.fcp_id,
                    -- Group NULL rimo_types into an 'UNKNOWN' category for clarity.
                    COALESCE(hn.rimo_type, 'UNKNOWN') AS rimo_type,
                    COUNT(DISTINCT hn.id) AS hausnummer_count,
                    COUNT(DISTINCT we.id) AS wohneinheit_count,
                    COUNT(DISTINCT CASE WHEN ps.code < 899 THEN p.id ELSE NULL END) AS preorder_count
                FROM
                    `{$addressDbName}`.`Hausnummer` AS hn
                LEFT JOIN
                    `{$addressDbName}`.`Wohneinheit` AS we ON hn.id = we.hausnummer_id
                LEFT JOIN
                    `{$fronkDbName}`.`Preorder` AS p ON hn.id = p.adb_hausnummer_id
                LEFT JOIN
                    `{$fronkDbName}`.`Preorderstatus` AS ps ON p.status_id = ps.id
                WHERE
                    hn.fcp_id IS NOT NULL
                GROUP BY
                    hn.fcp_id,
                    COALESCE(hn.rimo_type, 'UNKNOWN')
            )
            -- Final SELECT statement to assemble the data for each FCP.
            SELECT
                fcp.id AS fcp_id,
                fcp.name AS fcp_name,
                fcp.rimo_id AS fcp_rimo_id,
                -- Aggregate total counts for the entire FCP.
                SUM(rtc.hausnummer_count) AS total_hausnummer_count,
                SUM(rtc.wohneinheit_count) AS total_wohneinheit_count,
                SUM(rtc.preorder_count) AS total_active_preorders,
                -- Create a single JSON object from all the rimo_type groups for the current FCP.
                JSON_OBJECTAGG(
                    rtc.rimo_type,
                    JSON_OBJECT(
                        'hausnummer_count', rtc.hausnummer_count,
                        'wohneinheit_count', rtc.wohneinheit_count,
                        'preorder_count', rtc.preorder_count
                    )
                ) AS counts_by_rimo_type
            FROM
                `{$addressDbName}`.`RimoFcp` AS fcp
            LEFT JOIN
                RimoTypeCounts AS rtc ON fcp.id = rtc.fcp_id
            WHERE
                rtc.fcp_id IS NOT NULL
            GROUP BY
                fcp.id, fcp.name, fcp.rimo_id
            ORDER BY
                fcp.name;
        ";

        $result = $db->query($sql);
        return $result ? $result->fetch_all(MYSQLI_ASSOC) : [];
    }
}