<?php

declare(strict_types=1);

namespace app\adminapi\logic\stats;

use app\adminapi\logic\dept\DeptLogic;
use app\adminapi\logic\tcm\DiagnosisLogic;
use app\common\service\qywx\MediaChannelService;
use think\facade\Db;

class ConversionLogic
{
    private const VIRTUAL_DEPT_UNBOUND_ADMIN_ID = -1;
    private const VIRTUAL_DEPT_UNASSIGNED_ID = -2;

    /**
     * @return array<string, mixed>
     */
    public static function overview(array $params = []): array
    {
        $includeFilters = (int)($params['include_filters'] ?? 0) === 1;
        $dimension = self::normalizeDimension((string)($params['dimension'] ?? 'dept'));
        $mediaChannelCode = MediaChannelService::normalizeStatsCode((string) ($params['media_channel_code'] ?? ''));
        $mediaChannel = $mediaChannelCode !== '' ? MediaChannelService::getChannelByCode($mediaChannelCode) : null;
        $filterEmptyEntities = $mediaChannel !== null;
        [$startTimestamp, $endTimestamp, $startDate, $endDate] = self::resolveTimeRange($params);
        $pageNo = max(1, (int)($params['page_no'] ?? 1));
        $pageSize = max(1, min(100, (int)($params['page_size'] ?? 15)));

        $entities = self::loadEntities($dimension, $params);
        $entityIds = array_keys($entities);

        if ($entityIds === []) {
            $result = [
                'dimension' => $dimension,
                'date_range' => [$startDate, $endDate],
                'summary' => self::buildSummary([]),
                'charts' => self::buildCharts([]),
                'lists' => [],
                'count' => 0,
                'page_no' => $pageNo,
                'page_size' => $pageSize,
                'extend' => [
                    'dimension' => $dimension,
                    'date_range' => [$startDate, $endDate],
                    'summary' => self::buildSummary([]),
                    'charts' => self::buildCharts([]),
                ],
            ];
            if ($includeFilters) {
                $result['extend']['filters'] = self::buildFilterOptions();
            }

            return $result;
        }

        $adminToDeptIds = self::loadAdminDeptMap();
        self::hydrateFanStats($entities, $dimension, $entityIds, $adminToDeptIds, $startTimestamp, $endTimestamp, $mediaChannel);
        self::hydrateAppointmentStats($entities, $dimension, $entityIds, $adminToDeptIds, $startDate, $endDate, $mediaChannel);
        self::hydrateOrderAndAmountStats($entities, $dimension, $entityIds, $adminToDeptIds, $startTimestamp, $endTimestamp, $mediaChannel);
        $globalAccountCost = self::hydrateAccountCostStats($entities, $startDate, $endDate, $mediaChannelCode);

        if ($dimension === 'dept') {
            [$allRows, $pagedRows, $chartRows] = self::buildDeptTreeRows(
                $entities,
                isset($params['dept_id']) ? (int)$params['dept_id'] : 0,
                $pageNo,
                $pageSize,
                $filterEmptyEntities
            );

            $result = [
                'dimension' => $dimension,
                'date_range' => [$startDate, $endDate],
                'summary' => self::buildSummary($allRows, $globalAccountCost),
                'charts' => self::buildCharts($chartRows),
                'lists' => $pagedRows,
                'count' => count($allRows),
                'page_no' => $pageNo,
                'page_size' => $pageSize,
                'extend' => [
                    'dimension' => $dimension,
                    'date_range' => [$startDate, $endDate],
                    'summary' => self::buildSummary($allRows, $globalAccountCost),
                    'charts' => self::buildCharts($chartRows),
                ],
            ];
            if ($includeFilters) {
                $result['extend']['filters'] = self::buildFilterOptions();
            }

            return $result;
        }

        $rows = self::finalizeRows($entities, $filterEmptyEntities);
        $count = count($rows);
        $offset = ($pageNo - 1) * $pageSize;

        $result = [
            'dimension' => $dimension,
            'date_range' => [$startDate, $endDate],
            'summary' => self::buildSummary($rows, $globalAccountCost),
            'charts' => self::buildCharts($rows),
            'lists' => array_slice($rows, $offset, $pageSize),
            'count' => $count,
            'page_no' => $pageNo,
            'page_size' => $pageSize,
            'extend' => [
                'dimension' => $dimension,
                'date_range' => [$startDate, $endDate],
                'summary' => self::buildSummary($rows, $globalAccountCost),
                'charts' => self::buildCharts($rows),
            ],
        ];
        if ($includeFilters) {
            $result['extend']['filters'] = self::buildFilterOptions();
        }

        return $result;
    }

    /**
     * @return array<string, mixed>
     */
    private static function buildFilterOptions(): array
    {
        return [
            'departments' => DeptLogic::getAllData(),
            'assistants' => DiagnosisLogic::getAssistants(),
            'doctors' => DiagnosisLogic::getDoctors(),
            'media_channels' => MediaChannelService::getOptions(),
        ];
    }

    private static function normalizeDimension(string $dimension): string
    {
        return in_array($dimension, ['dept', 'assistant', 'doctor'], true) ? $dimension : 'dept';
    }

    /**
     * @return array{0:int,1:int,2:string,3:string}
     */
    private static function resolveTimeRange(array $params): array
    {
        $today = date('Y-m-d');
        $timeType = (string)($params['time_type'] ?? 'today');

        switch ($timeType) {
            case 'yesterday':
                $startDate = date('Y-m-d', strtotime('-1 day'));
                $endDate = $startDate;
                break;
            case 'week':
                $startDate = date('Y-m-d', strtotime('-6 days'));
                $endDate = $today;
                break;
            case 'month':
                $startDate = date('Y-m-d', strtotime('-29 days'));
                $endDate = $today;
                break;
            case 'custom':
                $startDate = trim((string)($params['start_date'] ?? ''));
                $endDate = trim((string)($params['end_date'] ?? ''));
                if ($startDate === '' || $endDate === '' || strtotime($startDate) === false || strtotime($endDate) === false) {
                    $startDate = $today;
                    $endDate = $today;
                }
                if ($startDate > $endDate) {
                    [$startDate, $endDate] = [$endDate, $startDate];
                }
                break;
            case 'today':
            default:
                $startDate = $today;
                $endDate = $today;
                break;
        }

        return [
            strtotime($startDate . ' 00:00:00'),
            strtotime($endDate . ' 23:59:59'),
            $startDate,
            $endDate,
        ];
    }

    /**
     * @return array<int, array<string, mixed>>
     */
    private static function loadEntities(string $dimension, array $params): array
    {
        $entities = match ($dimension) {
            'assistant' => self::loadAdminEntities(2, isset($params['assistant_id']) ? (int)$params['assistant_id'] : 0),
            'doctor' => self::loadAdminEntities(1, isset($params['doctor_id']) ? (int)$params['doctor_id'] : 0),
            default => self::loadDeptEntities(isset($params['dept_id']) ? (int)$params['dept_id'] : 0),
        };

        if ($dimension === 'dept' && (int)($params['dept_id'] ?? 0) <= 0) {
            self::appendVirtualDeptEntities($entities);
        }

        return $entities;
    }

    /**
     * @return array<int, array<string, mixed>>
     */
    private static function loadDeptEntities(int $deptId = 0): array
    {
        $query = Db::name('dept')
            ->whereNull('delete_time')
            ->field('id, pid, name, sort');

        $rows = $query->order('sort desc, id asc')->select()->toArray();
        if ($deptId > 0) {
            $allowedIds = self::collectDeptSubtreeIds($rows, $deptId);
            $rows = array_values(array_filter($rows, static fn (array $row): bool => in_array((int)$row['id'], $allowedIds, true)));
        }

        $entities = [];
        foreach ($rows as $row) {
            $id = (int)($row['id'] ?? 0);
            if ($id <= 0) {
                continue;
            }
            $entities[$id] = self::newEntityRow($id, (string)($row['name'] ?? ''));
            $entities[$id]['pid'] = (int)($row['pid'] ?? 0);
            $entities[$id]['sort'] = (int)($row['sort'] ?? 0);
        }

        return $entities;
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     * @return int[]
     */
    private static function collectDeptSubtreeIds(array $rows, int $rootId): array
    {
        $childrenByPid = [];
        foreach ($rows as $row) {
            $pid = (int)($row['pid'] ?? 0);
            $id = (int)($row['id'] ?? 0);
            $childrenByPid[$pid] ??= [];
            $childrenByPid[$pid][] = $id;
        }

        $queue = [$rootId];
        $result = [];
        while ($queue !== []) {
            $current = array_shift($queue);
            if (!$current || isset($result[$current])) {
                continue;
            }
            $result[$current] = $current;
            foreach ($childrenByPid[$current] ?? [] as $childId) {
                $queue[] = (int)$childId;
            }
        }

        return array_values($result);
    }

    /**
     * @return array<int, array<string, mixed>>
     */
    private static function loadAdminEntities(int $roleId, int $adminId = 0): array
    {
        $query = Db::name('admin')
            ->alias('a')
            ->join('admin_role ar', 'ar.admin_id = a.id')
            ->where('ar.role_id', $roleId)
            ->whereNull('a.delete_time')
            ->field('a.id, a.name');

        if ($adminId > 0) {
            $query->where('a.id', $adminId);
        }

        $rows = $query->order('a.id asc')->select()->toArray();
        $entities = [];
        foreach ($rows as $row) {
            $id = (int)($row['id'] ?? 0);
            if ($id <= 0) {
                continue;
            }
            $entities[$id] = self::newEntityRow($id, (string)($row['name'] ?? ''));
        }

        return $entities;
    }

    /**
     * @return array<string, mixed>
     */
    private static function newEntityRow(int $id, string $name): array
    {
        return [
            'id' => $id,
            'name' => $name,
            'add_fans_count' => 0,
            'total_open_count' => 0,
            'unreplied_count' => 0,
            'paid_appointment_count' => 0,
            'free_appointment_count' => 0,
            'appointment_total_count' => 0,
            'interview_count' => 0,
            'business_order_amount' => 0.0,
            'completed_order_amount' => 0.0,
            'completed_order_count' => 0,
            'account_cost' => 0.0,
            '_virtual_bucket' => false,
        ];
    }

    /**
     * @param array<int, array<string, mixed>> $entities
     */
    private static function appendVirtualDeptEntities(array &$entities): void
    {
        $entities[self::VIRTUAL_DEPT_UNBOUND_ADMIN_ID] = array_merge(
            self::newEntityRow(self::VIRTUAL_DEPT_UNBOUND_ADMIN_ID, '未绑定后台账号'),
            [
                'pid' => 0,
                'sort' => -999998,
                '_virtual_bucket' => true,
            ]
        );

        $entities[self::VIRTUAL_DEPT_UNASSIGNED_ID] = array_merge(
            self::newEntityRow(self::VIRTUAL_DEPT_UNASSIGNED_ID, '未分配部门'),
            [
                'pid' => 0,
                'sort' => -999999,
                '_virtual_bucket' => true,
            ]
        );
    }

    /**
     * @return array<int, int[]>
     */
    private static function loadAdminDeptMap(): array
    {
        $rows = Db::name('admin_dept')->field('admin_id, dept_id')->select()->toArray();
        $map = [];
        foreach ($rows as $row) {
            $adminId = (int)($row['admin_id'] ?? 0);
            $deptId = (int)($row['dept_id'] ?? 0);
            if ($adminId <= 0 || $deptId <= 0) {
                continue;
            }
            $map[$adminId] ??= [];
            $map[$adminId][] = $deptId;
        }

        return $map;
    }

    /**
     * @param array<int, array<string, mixed>> $entities
     * @param int[] $entityIds
     * @param array<int, int[]> $adminToDeptIds
     * @param array<string, mixed>|null $mediaChannel
     */
    private static function hydrateFanStats(
        array &$entities,
        string $dimension,
        array $entityIds,
        array $adminToDeptIds,
        int $startTimestamp,
        int $endTimestamp,
        ?array $mediaChannel
    ): void {
        $query = Db::name('qywx_external_contact_event')
            ->alias('e')
            ->leftJoin('admin a', 'a.work_wechat_userid = e.user_id AND a.delete_time IS NULL')
            ->where('e.change_type', 'add_external_contact')
            ->where('e.event_time', 'between', [$startTimestamp, $endTimestamp])
            ->fieldRaw('e.user_id, a.id AS admin_id, COUNT(*) AS add_fans_count')
            ->group('e.user_id, a.id');

        if ($mediaChannel !== null) {
            $query->leftJoin('qywx_external_contact q', 'q.external_userid = e.external_userid');
            MediaChannelService::applyFollowUsersChannelFilter($query, 'q.follow_users', $mediaChannel);
        }

        $rows = $query->select()->toArray();

        foreach ($rows as $row) {
            $adminId = (int)($row['admin_id'] ?? 0);
            $addFansCount = (int)($row['add_fans_count'] ?? 0);

            if ($dimension === 'dept' && $adminId <= 0) {
                if (isset($entities[self::VIRTUAL_DEPT_UNBOUND_ADMIN_ID])) {
                    $entities[self::VIRTUAL_DEPT_UNBOUND_ADMIN_ID]['add_fans_count'] += $addFansCount;
                }
                continue;
            }

            if ($adminId <= 0) {
                continue;
            }

            $hitEntityIds = self::mapEntityIds($dimension, $adminId, $entityIds, $adminToDeptIds);
            if ($dimension === 'dept' && $hitEntityIds === []) {
                if (isset($entities[self::VIRTUAL_DEPT_UNASSIGNED_ID])) {
                    $entities[self::VIRTUAL_DEPT_UNASSIGNED_ID]['add_fans_count'] += $addFansCount;
                }
                continue;
            }

            if ($hitEntityIds === []) {
                continue;
            }

            foreach ($hitEntityIds as $entityId) {
                $entities[$entityId]['add_fans_count'] += $addFansCount;
            }
        }
    }

    /**
     * @param array<int, array<string, mixed>> $entities
     * @param int[] $entityIds
     * @param array<int, int[]> $adminToDeptIds
     * @param array<string, mixed>|null $mediaChannel
     */
    private static function hydrateAppointmentStats(
        array &$entities,
        string $dimension,
        array $entityIds,
        array $adminToDeptIds,
        string $startDate,
        string $endDate,
        ?array $mediaChannel
    ): void {
        $sourceExpr = $dimension === 'doctor' ? 'a.doctor_id' : 'u.assistant_id';
        $query = Db::name('doctor_appointment')
            ->alias('a')
            ->leftJoin('tcm_diagnosis u', 'a.patient_id = u.id')
            ->where('a.appointment_date', '>=', $startDate)
            ->where('a.appointment_date', '<=', $endDate)
            ->whereRaw('(u.id IS NULL OR u.delete_time IS NULL)')
            ->fieldRaw("{$sourceExpr} AS source_admin_id, a.patient_id AS diagnosis_id, COUNT(*) AS appointment_count, SUM(CASE WHEN a.status = 3 THEN 1 ELSE 0 END) AS interview_count")
            ->group("{$sourceExpr}, a.patient_id");

        if ($mediaChannel !== null) {
            $query->leftJoin('qywx_external_contact q', 'q.external_userid = u.external_userid');
            MediaChannelService::applyFollowUsersChannelFilter($query, 'q.follow_users', $mediaChannel);
        }

        $rows = $query->select()->toArray();

        foreach ($rows as $row) {
            $diagnosisId = (int)($row['diagnosis_id'] ?? 0);
            if ($diagnosisId <= 0) {
                continue;
            }

            $sourceAdminId = (int)($row['source_admin_id'] ?? 0);

            $mappedEntityIds = self::mapEntityIds($dimension, $sourceAdminId, $entityIds, $adminToDeptIds);
            if ($mappedEntityIds === []) {
                continue;
            }

            $appointmentCount = (int)($row['appointment_count'] ?? 0);
            $interviewCount = (int)($row['interview_count'] ?? 0);
            foreach ($mappedEntityIds as $entityId) {
                $entities[$entityId]['appointment_total_count'] += $appointmentCount;
                $entities[$entityId]['paid_appointment_count'] += 1;
                if ($appointmentCount > 1) {
                    $entities[$entityId]['free_appointment_count'] += ($appointmentCount - 1);
                }
                $entities[$entityId]['interview_count'] += $interviewCount;
            }
        }
    }

    /**
     * @param array<int, array<string, mixed>> $entities
     * @param int[] $entityIds
     * @param array<int, int[]> $adminToDeptIds
     * @param array<string, mixed>|null $mediaChannel
     */
    private static function hydrateOrderAndAmountStats(
        array &$entities,
        string $dimension,
        array $entityIds,
        array $adminToDeptIds,
        int $startTimestamp,
        int $endTimestamp,
        ?array $mediaChannel
    ): void {
        $completedSourceExpr = $dimension === 'doctor' ? 'rx.creator_id' : 'rx.assistant_id';
        $completedQuery = Db::name('tcm_prescription_order')
            ->alias('po')
            ->leftJoin('tcm_prescription rx', 'rx.id = po.prescription_id')
            ->leftJoin('tcm_diagnosis dg', 'dg.id = po.diagnosis_id')
            ->whereNull('po.delete_time')
            ->where('po.payment_slip_audit_status', 1)
            ->where('po.create_time', 'between', [$startTimestamp, $endTimestamp])
            ->fieldRaw("{$completedSourceExpr} AS source_admin_id, SUM(CASE WHEN po.prescription_audit_status = 1 THEN 1 ELSE 0 END) AS order_count, SUM(CASE WHEN po.prescription_audit_status = 1 THEN po.amount ELSE 0 END) AS total_amount")
            ->group($completedSourceExpr);

        if ($mediaChannel !== null) {
            $completedQuery->leftJoin('qywx_external_contact q', 'q.external_userid = dg.external_userid');
            MediaChannelService::applyFollowUsersChannelFilter($completedQuery, 'q.follow_users', $mediaChannel);
        }

        $completedRows = $completedQuery->select()->toArray();

        foreach ($completedRows as $row) {
            $sourceAdminId = (int)($row['source_admin_id'] ?? 0);

            $mappedEntityIds = self::mapEntityIds($dimension, $sourceAdminId, $entityIds, $adminToDeptIds);
            if ($mappedEntityIds === []) {
                continue;
            }

            $orderCount = (int)($row['order_count'] ?? 0);
            $amount = round((float)($row['total_amount'] ?? 0), 2);

            foreach ($mappedEntityIds as $entityId) {
                $entities[$entityId]['completed_order_count'] += $orderCount;
                $entities[$entityId]['completed_order_amount'] = round($entities[$entityId]['completed_order_amount'] + $amount, 2);
            }
        }

        $businessSourceExpr = $dimension === 'doctor' ? 'po.creator_id' : 'dg.assistant_id';
        $businessQuery = Db::name('tcm_prescription_order')
            ->alias('po')
            ->leftJoin('tcm_diagnosis dg', 'dg.id = po.diagnosis_id')
            ->whereNull('po.delete_time')
            ->where('po.create_time', 'between', [$startTimestamp, $endTimestamp])
            ->where('po.fulfillment_status', '<>', 4)
            ->fieldRaw("{$businessSourceExpr} AS source_admin_id, SUM(po.amount) AS total_amount")
            ->group($businessSourceExpr);

        if ($mediaChannel !== null) {
            $businessQuery->leftJoin('qywx_external_contact q2', 'q2.external_userid = dg.external_userid');
            MediaChannelService::applyFollowUsersChannelFilter($businessQuery, 'q2.follow_users', $mediaChannel);
        }

        $businessRows = $businessQuery->select()->toArray();

        foreach ($businessRows as $row) {
            $sourceAdminId = (int)($row['source_admin_id'] ?? 0);
            $mappedEntityIds = self::mapEntityIds($dimension, $sourceAdminId, $entityIds, $adminToDeptIds);
            if ($mappedEntityIds === []) {
                continue;
            }

            $amount = round((float)($row['total_amount'] ?? 0), 2);
            foreach ($mappedEntityIds as $entityId) {
                $entities[$entityId]['business_order_amount'] = round($entities[$entityId]['business_order_amount'] + $amount, 2);
            }
        }
    }

    /**
     * 账户消耗：来源于独立维护表 zyt_account_cost，为全局日维度数据。
     * 由于当前没有部门/医助/医生拆分来源，只在当前筛选口径的汇总层使用，不向各明细行分摊。
     *
     * @param array<int, array<string, mixed>> $entities
     */
    private static function hydrateAccountCostStats(array &$entities, string $startDate, string $endDate, string $mediaChannelCode): float
    {
        $query = Db::name('account_cost')
            ->where('cost_date', '>=', $startDate)
            ->where('cost_date', '<=', $endDate);

        if ($mediaChannelCode !== '') {
            $query->where('media_channel_code', $mediaChannelCode);
        }

        $totalAmount = round((float) $query->sum('amount'), 2);

        foreach ($entities as &$entity) {
            $entity['account_cost'] = 0.0;
            $entity['_global_account_cost'] = $totalAmount;
        }
        unset($entity);

        return $totalAmount;
    }


    /**
     * @param int[] $entityIds
     * @param array<int, int[]> $adminToDeptIds
     * @return int[]
     */
    private static function mapEntityIds(string $dimension, int $adminId, array $entityIds, array $adminToDeptIds): array
    {
        if ($adminId <= 0) {
            return [];
        }

        if ($dimension !== 'dept') {
            return in_array($adminId, $entityIds, true) ? [$adminId] : [];
        }

        $deptIds = $adminToDeptIds[$adminId] ?? [];
        if ($deptIds === []) {
            return [];
        }

        return array_values(array_filter($deptIds, static fn (int $deptId): bool => in_array($deptId, $entityIds, true)));
    }

    /**
     * @param array<int, array<string, mixed>> $entities
     * @return array<int, array<string, mixed>>
     */
    private static function finalizeRows(array $entities, bool $excludeEmpty = false): array
    {
        $rows = [];
        $globalAccountCost = 0.0;
        foreach ($entities as $entity) {
            $paidAppointmentCount = (int)($entity['paid_appointment_count'] ?? 0);
            $freeAppointmentCount = (int)($entity['free_appointment_count'] ?? 0);
            $appointmentTotalCount = (int)($entity['appointment_total_count'] ?? 0);
            $interviewCount = (int)$entity['interview_count'];
            $addFansCount = (int)$entity['add_fans_count'];
            $totalOpenCount = (int)$entity['total_open_count'];
            $completedOrderCount = (int)$entity['completed_order_count'];
            $businessOrderAmount = round((float)$entity['business_order_amount'], 2);
            $completedOrderAmount = round((float)$entity['completed_order_amount'], 2);
            $accountCost = round((float)$entity['account_cost'], 2);
            $globalAccountCost = max($globalAccountCost, round((float)($entity['_global_account_cost'] ?? 0), 2));
            $effectiveAccountCost = $globalAccountCost > 0 ? $globalAccountCost : $accountCost;

            $entity['paid_appointment_count'] = $paidAppointmentCount;
            $entity['free_appointment_count'] = $freeAppointmentCount;
            $entity['appointment_total_count'] = $appointmentTotalCount;
            $entity['business_order_amount'] = $businessOrderAmount;
            $entity['completed_order_amount'] = $completedOrderAmount;
            $entity['account_cost'] = $effectiveAccountCost;
            $entity['paid_appointment_rate'] = self::percent($paidAppointmentCount, $addFansCount);
            $entity['open_appointment_rate'] = self::percent($paidAppointmentCount, $totalOpenCount);
            $entity['interview_rate'] = self::percent($interviewCount, $appointmentTotalCount);
            $entity['receive_rate'] = self::percent($completedOrderCount, $addFansCount);
            $entity['interview_receive_rate'] = self::percent($completedOrderCount, $interviewCount);
            $entity['open_receive_rate'] = self::percent($completedOrderCount, $totalOpenCount);
            $entity['avg_unit_price'] = self::safeDivideMoney($completedOrderAmount, $completedOrderCount);
            $entity['cash_cost'] = self::safeDivideMoney($effectiveAccountCost, $addFansCount);
            $entity['roi'] = self::safeDivideRatio($completedOrderAmount, $effectiveAccountCost);

            if ($excludeEmpty && !self::hasBusinessMetrics($entity)) {
                continue;
            }

            $rows[] = $entity;
        }

        usort($rows, static function (array $left, array $right): int {
            $order = $right['completed_order_amount'] <=> $left['completed_order_amount'];
            if ($order !== 0) {
                return $order;
            }
            $order = $right['completed_order_count'] <=> $left['completed_order_count'];
            if ($order !== 0) {
                return $order;
            }

            return $right['add_fans_count'] <=> $left['add_fans_count'];
        });

        if ($globalAccountCost > 0 && $rows !== []) {
            foreach ($rows as &$row) {
                $row['_global_account_cost'] = $globalAccountCost;
            }
            unset($row);
        }

        return $rows;
    }

    /**
     * @param array<int, array<string, mixed>> $entities
     * @return array{0: array<int, array<string, mixed>>, 1: array<int, array<string, mixed>>, 2: array<int, array<string, mixed>>}
     */
    private static function buildDeptTreeRows(array $entities, int $selectedDeptId, int $pageNo, int $pageSize, bool $excludeEmpty = false): array
    {
        $childrenByPid = [];
        foreach ($entities as $entity) {
            $pid = (int)($entity['pid'] ?? 0);
            $childrenByPid[$pid] ??= [];
            $childrenByPid[$pid][] = (int)$entity['id'];
        }

        foreach ($childrenByPid as &$ids) {
            usort($ids, static function (int $left, int $right) use ($entities): int {
                $sortCompare = ((int)($entities[$right]['sort'] ?? 0)) <=> ((int)($entities[$left]['sort'] ?? 0));
                if ($sortCompare !== 0) {
                    return $sortCompare;
                }

                return $left <=> $right;
            });
        }
        unset($ids);

        $buildNode = function (int $deptId) use (&$buildNode, &$entities, $childrenByPid): array {
            $node = $entities[$deptId];
            $children = [];
            foreach ($childrenByPid[$deptId] ?? [] as $childId) {
                $childNode = $buildNode((int)$childId);
                $children[] = $childNode;
                $node['add_fans_count'] += (int)$childNode['add_fans_count'];
                $node['total_open_count'] += (int)$childNode['total_open_count'];
                $node['unreplied_count'] += (int)$childNode['unreplied_count'];
                $node['paid_appointment_count'] += (int)$childNode['paid_appointment_count'];
                $node['free_appointment_count'] += (int)$childNode['free_appointment_count'];
                $node['appointment_total_count'] += (int)$childNode['appointment_total_count'];
                $node['interview_count'] += (int)$childNode['interview_count'];
                $node['completed_order_count'] += (int)$childNode['completed_order_count'];
                $node['business_order_amount'] = round((float)$node['business_order_amount'] + (float)$childNode['business_order_amount'], 2);
                $node['completed_order_amount'] = round((float)$node['completed_order_amount'] + (float)$childNode['completed_order_amount'], 2);
                $node['account_cost'] = round((float)$node['account_cost'] + (float)$childNode['account_cost'], 2);
            }
            $node['children'] = $children;
            return $node;
        };

        $rootIds = [];
        foreach ($entities as $entity) {
            $pid = (int)($entity['pid'] ?? 0);
            if (!isset($entities[$pid])) {
                $rootIds[] = (int)$entity['id'];
            }
        }

        usort($rootIds, static function (int $left, int $right) use ($entities): int {
            $sortCompare = ((int)($entities[$right]['sort'] ?? 0)) <=> ((int)($entities[$left]['sort'] ?? 0));
            if ($sortCompare !== 0) {
                return $sortCompare;
            }

            return $left <=> $right;
        });

        $rootRows = array_map(static fn (int $deptId): array => self::finalizeDeptNode($buildNode($deptId)), $rootIds);
        if ($excludeEmpty) {
            $rootRows = array_values(array_filter(array_map(
                static fn (array $row): ?array => self::pruneDeptNode($row),
                $rootRows
            )));
        }
        $realRootRows = array_values(array_filter($rootRows, static fn (array $row): bool => !((bool)($row['_virtual_bucket'] ?? false))));
        $virtualRoot = count($realRootRows) === 1 && !empty($realRootRows[0]['children']) ? $realRootRows[0] : null;

        if ($selectedDeptId > 0) {
            $selectedNode = self::findDeptNode($rootRows, $selectedDeptId);
            if ($selectedNode !== null) {
                $allRows = [$selectedNode];
                $chartRows = !empty($selectedNode['children']) ? $selectedNode['children'] : [$selectedNode];
            } else {
                $allRows = $rootRows;
                $chartRows = $virtualRoot !== null ? ($virtualRoot['children'] ?? [$virtualRoot]) : ($realRootRows ?: $rootRows);
            }
        } else {
            $allRows = $rootRows;
            $chartRows = $virtualRoot !== null ? ($virtualRoot['children'] ?? [$virtualRoot]) : ($realRootRows ?: $rootRows);
        }

        $offset = ($pageNo - 1) * $pageSize;

        return [$allRows, array_slice($allRows, $offset, $pageSize), $chartRows];
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     * @return array<string, mixed>|null
     */
    private static function findDeptNode(array $rows, int $deptId): ?array
    {
        foreach ($rows as $row) {
            if ((int)($row['id'] ?? 0) === $deptId) {
                return $row;
            }
            $children = $row['children'] ?? [];
            if (!is_array($children) || $children === []) {
                continue;
            }
            $matched = self::findDeptNode($children, $deptId);
            if ($matched !== null) {
                return $matched;
            }
        }

        return null;
    }

    /**
     * @param array<string, mixed> $node
     * @return array<string, mixed>|null
     */
    private static function pruneDeptNode(array $node): ?array
    {
        $children = [];
        foreach ($node['children'] ?? [] as $child) {
            if (!is_array($child)) {
                continue;
            }
            $pruned = self::pruneDeptNode($child);
            if ($pruned !== null) {
                $children[] = $pruned;
            }
        }
        $node['children'] = $children;

        if ($children !== []) {
            return $node;
        }

        return self::hasBusinessMetrics($node) ? $node : null;
    }

    /**
     * @param array<string, mixed> $node
     * @return array<string, mixed>
     */
    private static function finalizeDeptNode(array $node): array
    {
        $node['children'] = array_map(static fn (array $child): array => self::finalizeDeptNode($child), $node['children'] ?? []);
        $paidAppointmentCount = (int)($node['paid_appointment_count'] ?? 0);
        $freeAppointmentCount = (int)($node['free_appointment_count'] ?? 0);
        $appointmentTotalCount = (int)($node['appointment_total_count'] ?? 0);
        $interviewCount = (int)$node['interview_count'];
        $addFansCount = (int)$node['add_fans_count'];
        $totalOpenCount = (int)$node['total_open_count'];
        $completedOrderCount = (int)$node['completed_order_count'];
        $businessOrderAmount = round((float)$node['business_order_amount'], 2);
        $completedOrderAmount = round((float)$node['completed_order_amount'], 2);
        $accountCost = round((float)$node['account_cost'], 2);
        $globalAccountCost = round((float)($node['_global_account_cost'] ?? 0), 2);
        $effectiveAccountCost = $globalAccountCost > 0 ? $globalAccountCost : $accountCost;

        $node['paid_appointment_count'] = $paidAppointmentCount;
        $node['free_appointment_count'] = $freeAppointmentCount;
        $node['appointment_total_count'] = $appointmentTotalCount;
        $node['business_order_amount'] = $businessOrderAmount;
        $node['completed_order_amount'] = $completedOrderAmount;
        $node['account_cost'] = $effectiveAccountCost;
        $node['paid_appointment_rate'] = self::percent($paidAppointmentCount, $addFansCount);
        $node['open_appointment_rate'] = self::percent($paidAppointmentCount, $totalOpenCount);
        $node['interview_rate'] = self::percent($interviewCount, $appointmentTotalCount);
        $node['receive_rate'] = self::percent($completedOrderCount, $addFansCount);
        $node['interview_receive_rate'] = self::percent($completedOrderCount, $interviewCount);
        $node['open_receive_rate'] = self::percent($completedOrderCount, $totalOpenCount);
        $node['avg_unit_price'] = self::safeDivideMoney($completedOrderAmount, $completedOrderCount);
        $node['cash_cost'] = self::safeDivideMoney($effectiveAccountCost, $addFansCount);
        $node['roi'] = self::safeDivideRatio($completedOrderAmount, $effectiveAccountCost);
        if ($globalAccountCost > 0) {
            $node['_global_account_cost'] = $globalAccountCost;
        }
        unset($node['sort'], $node['pid']);

        return $node;
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     * @return array<string, mixed>
     */
    private static function buildSummary(array $rows, float $forcedAccountCost = 0.0): array
    {
        $summary = [
            'add_fans_count' => 0,
            'total_open_count' => 0,
            'unreplied_count' => 0,
            'paid_appointment_count' => 0,
            'free_appointment_count' => 0,
            'appointment_total_count' => 0,
            'interview_count' => 0,
            'business_order_amount' => 0.0,
            'completed_order_amount' => 0.0,
            'completed_order_count' => 0,
            'account_cost' => 0.0,
        ];
        $globalAccountCost = 0.0;

        foreach ($rows as $row) {
            $summary['add_fans_count'] += (int)$row['add_fans_count'];
            $summary['total_open_count'] += (int)$row['total_open_count'];
            $summary['unreplied_count'] += (int)$row['unreplied_count'];
            $summary['paid_appointment_count'] += (int)$row['paid_appointment_count'];
            $summary['free_appointment_count'] += (int)$row['free_appointment_count'];
            $summary['appointment_total_count'] += (int)$row['appointment_total_count'];
            $summary['interview_count'] += (int)$row['interview_count'];
            $summary['completed_order_count'] += (int)$row['completed_order_count'];
            $summary['business_order_amount'] = round($summary['business_order_amount'] + (float)($row['business_order_amount'] ?? 0), 2);
            $summary['completed_order_amount'] = round($summary['completed_order_amount'] + (float)$row['completed_order_amount'], 2);
            $globalAccountCost = max($globalAccountCost, round((float)($row['_global_account_cost'] ?? 0), 2));
        }

        $summary['account_cost'] = max($globalAccountCost, round($forcedAccountCost, 2));

        $summary['paid_appointment_rate'] = self::percent($summary['paid_appointment_count'], $summary['add_fans_count']);
        $summary['open_appointment_rate'] = self::percent($summary['paid_appointment_count'], $summary['total_open_count']);
        $summary['interview_rate'] = self::percent($summary['interview_count'], $summary['appointment_total_count']);
        $summary['receive_rate'] = self::percent($summary['completed_order_count'], $summary['add_fans_count']);
        $summary['interview_receive_rate'] = self::percent($summary['completed_order_count'], $summary['interview_count']);
        $summary['open_receive_rate'] = self::percent($summary['completed_order_count'], $summary['total_open_count']);
        $summary['avg_unit_price'] = self::safeDivideMoney($summary['completed_order_amount'], $summary['completed_order_count']);
        $summary['cash_cost'] = self::safeDivideMoney($summary['account_cost'], $summary['add_fans_count']);
        $summary['roi'] = self::safeDivideRatio($summary['completed_order_amount'], $summary['account_cost']);

        return $summary;
    }

    /**
     * @param array<string, mixed> $row
     */
    private static function hasBusinessMetrics(array $row): bool
    {
        return (int)($row['add_fans_count'] ?? 0) > 0
            || (int)($row['paid_appointment_count'] ?? 0) > 0
            || (int)($row['free_appointment_count'] ?? 0) > 0
            || (int)($row['appointment_total_count'] ?? 0) > 0
            || (int)($row['interview_count'] ?? 0) > 0
            || (int)($row['completed_order_count'] ?? 0) > 0
            || (float)($row['business_order_amount'] ?? 0) > 0
            || (float)($row['completed_order_amount'] ?? 0) > 0;
    }

    /**
     * @param array<int, array<string, mixed>> $rows
     * @return array<string, mixed>
     */
    private static function buildCharts(array $rows): array
    {
        $chartableRows = array_values(array_filter($rows, static fn (array $row): bool => !((bool)($row['_virtual_bucket'] ?? false))));
        $topRows = array_slice($chartableRows, 0, 10);

        $ranking = [
            'names' => [],
            'amounts' => [],
            'order_counts' => [],
            'fan_counts' => [],
            'rois' => [],
        ];

        foreach ($topRows as $row) {
            $ranking['names'][] = $row['name'];
            $ranking['amounts'][] = $row['completed_order_amount'];
            $ranking['order_counts'][] = $row['completed_order_count'];
            $ranking['fan_counts'][] = $row['add_fans_count'];
            $ranking['rois'][] = $row['roi'];
        }

        return [
            'ranking' => $ranking,
            'amount_share' => array_map(
                static fn (array $row): array => ['name' => $row['name'], 'value' => $row['completed_order_amount']],
                array_filter($topRows, static fn (array $row): bool => (float)$row['completed_order_amount'] > 0)
            ),
            'fan_share' => array_map(
                static fn (array $row): array => ['name' => $row['name'], 'value' => $row['add_fans_count']],
                array_filter($topRows, static fn (array $row): bool => (int)$row['add_fans_count'] > 0)
            ),
        ];
    }

    private static function percent(int $numerator, int $denominator): float
    {
        if ($denominator <= 0) {
            return 0.0;
        }

        return round(($numerator / $denominator) * 100, 2);
    }

    private static function safeDivideMoney(float $numerator, int $denominator): float
    {
        if ($denominator <= 0) {
            return 0.0;
        }

        return round($numerator / $denominator, 2);
    }

    private static function safeDivideRatio(float $numerator, float $denominator): float
    {
        if ($denominator <= 0) {
            return 0.0;
        }

        return round($numerator / $denominator, 2);
    }
}