<?php

namespace Give\Tracking\TrackingData;

use Give\Framework\Database\DB;
use Give\Helpers\ArrayDataSet;
use Give\Helpers\Form\Template;
use Give\Tracking\Contracts\TrackData;
use Give\Tracking\Helpers\DonationStatuses;
use Give\Tracking\Repositories\TrackEvents;

/**
 * Class DonationFormsData
 *
 * Represents donation forms data
 *
 * @package Give\Tracking\TrackingData
 * @since 2.10.0
 */
class DonationFormsData implements TrackData
{
    protected $formIds = [];
    protected $formRevenues = [];
    protected $formDonorCounts = [];

    /**
     * @var TrackEvents
     */
    protected $trackEvents;

    /**
     * DonationFormsData constructor.
     *
     * @param TrackEvents $trackEvents
     */
    public function __construct(TrackEvents $trackEvents)
    {
        $this->trackEvents = $trackEvents;
    }

    /**
     * @inheritdoc
     */
    public function get()
    {
        $this->setFormIds();

        if ( ! $this->formIds) {
            return [];
        }

        $this->setRevenues()
            ->setDonorCounts();

        return $this->getData();
    }

    /**
     * Get forms data.
     *
     * @since 2.10.0
     * @return array
     */
    protected function getData()
    {
        if ( ! $this->formIds) {
            return [];
        }

        $data = [];

        foreach ($this->formIds as $formId) {
            $formTemplate = Template::getActiveID($formId);

            $temp = [
                'form_id' => (int)$formId,
                'form_url' => untrailingslashit(get_permalink($formId)),
                'form_name' => get_post_field('post_name', $formId, 'db'),
                'form_type' => give()->form_meta->get_meta($formId, '_give_price_option', true),
                'form_template' => ! $formTemplate || 'legacy' === $formTemplate ? 'legacy' : $formTemplate,
                'donor_count' => $this->formDonorCounts[$formId],
                'revenue' => $this->formRevenues[$formId],
            ];

            $this->addAddonsInformation($temp, $formId);
            $data[] = $temp;
        }

        return $data;
    }

    /**
     * Set form ids.
     *
     * @since 2.10.0
     * @return self
     */
    protected function setFormIds()
    {
        global $wpdb;

        $statues = DonationStatuses::getCompletedDonationsStatues(true);
        $time = $this->trackEvents->getRequestTime();

        $this->formIds = DB::get_col(
            "
			SELECT DISTINCT dm.meta_value
			FROM {$wpdb->donationmeta} as dm
				INNER JOIN {$wpdb->posts} as p ON dm.donation_id = p.ID
				INNER JOIN {$wpdb->donationmeta} as dm2 ON dm.donation_id = dm2.donation_id
			WHERE p.post_status IN ({$statues})
			  	AND p.post_date>='{$time}'
			  	AND p.post_type='give_payment'
				AND dm2.meta_key='_give_payment_mode'
				AND dm2.meta_value='live'
				AND dm.meta_key='_give_payment_form_id'
			"
        );

        return $this;
    }

    /**
     * Set forms revenues.
     *
     * @since 2.10.0
     * @return self
     */
    protected function setRevenues()
    {
        global $wpdb;

        $formIds = ArrayDataSet::getStringSeparatedByCommaEnclosedWithSingleQuote($this->formIds);
        $defaultResult = array_combine(
            $this->formIds,
            array_fill(0, count($this->formIds), 0) // Set default revenue to 0
        );

        $result = DB::get_results(
            "
			SELECT SUM(r.amount) as amount, r.form_id
			FROM {$wpdb->give_revenue} as r
				INNER JOIN {$wpdb->donationmeta} as dm ON r.donation_id = dm.donation_id
			WHERE dm.meta_key='_give_payment_mode'
				AND dm.meta_value='live'
				AND r.form_id IN ({$formIds})
			GROUP BY form_id
			",
            ARRAY_A
        );

        if ($result) {
            $result = array_map(
                'absint',
                array_combine(
                    wp_list_pluck($result, 'form_id'),
                    wp_list_pluck($result, 'amount')
                )
            );
        }

        $this->formRevenues = array_replace($defaultResult, $result);

        return $this;
    }

    /**
     * Set forms revenues till current date.
     *
     * @since 2.10.0
     *
     * @return self
     */
    protected function setDonorCounts()
    {
        global $wpdb;

        $formIds = ArrayDataSet::getStringSeparatedByCommaEnclosedWithSingleQuote($this->formIds);
        $statues = DonationStatuses::getCompletedDonationsStatues(true);
        $defaultResult = array_combine(
            $this->formIds,
            array_fill(0, count($this->formIds), 0) // Set default donor count to 0
        );

        $result = DB::get_results(
            "
			SELECT COUNT(DISTINCT dm2.meta_value) as donor_count, dm.meta_value as form_id
			FROM {$wpdb->donationmeta} as dm
			    INNER JOIN {$wpdb->posts} as p ON donation_id = p.ID
				INNER JOIN {$wpdb->donationmeta} as dm2 ON dm.donation_id = dm2.donation_id
				INNER JOIN {$wpdb->donors} as donor ON dm2.meta_value = donor.id
				INNER JOIN {$wpdb->donationmeta} as dm3 ON dm.donation_id = dm3.donation_id
			WHERE p.post_status IN ({$statues})
			  	AND dm3.meta_key='_give_payment_mode'
				AND dm3.meta_value='live'
			    AND dm.meta_key='_give_payment_form_id'
				AND dm.meta_value IN ({$formIds})
				AND dm2.meta_key='_give_payment_donor_id'
				AND donor.purchase_value > 0
			GROUP BY dm.meta_value
			",
            ARRAY_A
        );

        if ($result) {
            $result = array_map(
                'absint',
                array_combine(
                    wp_list_pluck($result, 'form_id'),
                    wp_list_pluck($result, 'donor_count')
                )
            );
        }

        $this->formDonorCounts = array_replace($defaultResult, $result);

        return $this;
    }

    /**
     * Add addon information whether or not they active for donation form.
     *
     * @since 2.10.0
     *
     * @param array $array
     * @param int   $formId
     */
    private function addAddonsInformation(&$array, $formId)
    {
        $array = array_merge(
            $array,
            [
                'recurring_donations' => (int)apply_filters('give_telemetry_form_uses_addon_recurring', false, $formId),
                'fee_recovery' => (int)apply_filters('give_telemetry_form_uses_addon_fee_recovery', false, $formId),
                'form_field_manager' => (int)apply_filters(
                    'give_telemetry_form_uses_addon_form_field_manager',
                    false,
                    $formId
                ),
            ]
        );
    }
}
