<?php

namespace Modules\EcommerceFinance\Repositories;

use Illuminate\Database\Query\Builder;
use Modules\EcommerceFinance\Services\BusinessMirrorDatasetRegistry;
use RuntimeException;

/**
 * 财务经营风险管控 › 流程统计：店铺申请流程（开店 / 变更 / 关店）只读镜像。
 *
 * 表单字段来自 jiansun.dbo.fys_shopInfo_flow（聚水潭侧申请单，含店铺/主体/变更明细），
 * 审批状态与当前审批人来自中台库的 OA 流程表 dbo.flow_flow（按 flowId 关联）。
 */
class ShopInfoFlowMirrorRepository
{
    public const FORM_DATASET = 'jiansun.dbo.fys_shopInfo_flow';
    public const FLOW_DATASET = 'jiansun.dbo.flow_flow';

    /** OA 流程类型（flowType）到页面文案。 */
    public const FLOW_TYPES = [
        8 => '店铺开店',
        9 => '店铺变更',
        10 => '店铺关店',
        12 => '主体注销自动流程',
    ];

    /** OA 审批状态（flow_flow.flowStatus），取值与文案取自 OA 前端。 */
    public const APPROVAL_STATUSES = [
        0 => '暂存',
        1 => '流程中',
        2 => '拒绝',
        3 => '完成',
        4 => '撤回',
        5 => '待签署',
        6 => '已签署',
        7 => '待审批',
    ];

    /** 店铺档案状态（fys_shopInfo.shopState 口径）。 */
    private const SHOP_STATES = [0 => '正常', 3 => '关闭中', 6 => '已关闭'];

    public function __construct(
        private readonly BusinessMirrorDatasetRegistry $datasets,
        private readonly GenericBusinessMirrorRepository $mirror,
    ) {
    }

    public function ready(): bool
    {
        try {
            return $this->mirror->ready($this->datasets->get(self::FORM_DATASET));
        } catch (\Throwable) {
            return false;
        }
    }

    /**
     * @param array<string,mixed> $filters
     * @return array{data:list<array<string,mixed>>,total:int}
     */
    public function paginate(int $page, int $perPage, array $filters = []): array
    {
        if (! $this->ready()) {
            throw new RuntimeException('shop_info_flow_mirror_not_ready');
        }

        $page = max($page, 1);
        $perPage = min(max($perPage, 1), 100);
        $connection = $this->mirror->connection();
        $form = $this->datasets->get(self::FORM_DATASET)->targetTable();
        $flow = $this->datasets->get(self::FLOW_DATASET)->targetTable();

        $query = $connection->table($form . ' as f')
            ->leftJoin($flow . ' as o', 'o.flowId', '=', 'f.flowId');

        $this->applyFilters($query, $filters);

        $total = (clone $query)->count();
        $rows = $query
            ->select([
                'f.Id as id', 'f.flowId as flow_id', 'f.flowType as flow_type', 'f.applyUser as apply_user',
                'f.applyTime as apply_time', 'f.applyDepartment as apply_department', 'f.remark as remark',
                'f.platform as platform', 'f.responsibleDepartment as responsible_department',
                'f.shopHead as shop_head', 'f.customerManager as customer_manager', 'f.shopType as shop_type',
                'f.shopState as shop_state', 'f.shopName as shop_name', 'f.erpShopName as erp_shop_name',
                'f.trademarkNumber as trademark_number', 'f.unifiedSocialCreditCode as subject_code',
                'f.informationChangeType as information_change_type', 'f.changeReason as change_reason',
                'f.changeSuccessful as change_successful', 'f.closeReason as close_reason',
                'f.expectedClosingTime as expected_closing_time', 'f.refundType as refund_type',
                'f.refundAmount as refund_amount', 'f.refundIssue as refund_issue',
                'o.flowStatus as approval_status_code', 'o.approver as current_approver',
                'o.subject as flow_subject', 'o.updateTime as flow_updated_at',
            ])
            ->orderByDesc('f.applyTime')->orderByDesc('f.Id')
            ->forPage($page, $perPage)
            ->get()
            ->map(fn (object $row): array => $this->mapRow($row))
            ->all();

        return ['data' => $rows, 'total' => $total];
    }

    /** @param array<string,mixed> $filters */
    private function applyFilters(Builder $query, array $filters): void
    {
        foreach ([
            'flow_id' => 'f.flowId',
            'apply_user' => 'f.applyUser',
            'erp_shop_name' => 'f.erpShopName',
            'shop_name' => 'f.shopName',
            'shop_head' => 'f.shopHead',
            'current_approver' => 'o.approver',
            'responsible_department' => 'f.responsibleDepartment',
            'trademark_number' => 'f.trademarkNumber',
        ] as $key => $column) {
            $value = trim((string) ($filters[$key] ?? ''));
            if ($value !== '') {
                $query->where($column, 'like', '%' . addcslashes($value, '%_\\') . '%');
            }
        }

        foreach ([['from', '>='], ['to', '<=']] as [$suffix, $operator]) {
            $date = trim((string) ($filters['apply_' . $suffix] ?? ''));
            if (preg_match('/^\d{4}-\d{2}-\d{2}$/D', $date)) {
                $query->whereDate('f.applyTime', $operator, $date);
            }
        }

        // 多选筛选：流程类型 / 审批状态 / 平台，多个取值取并集。
        $flowTypes = $this->filterValues($filters['flow_type'] ?? '');
        if ($flowTypes !== []) {
            $codes = [];
            foreach ($flowTypes as $label) {
                $code = array_search($label, self::FLOW_TYPES, true);
                if ($code !== false) {
                    $codes[] = (int) $code;
                }
            }
            $query->whereIn('f.flowType', $codes === [] ? [-1] : $codes);
        }

        $statuses = $this->filterValues($filters['approval_status'] ?? '');
        if ($statuses !== []) {
            $codes = [];
            foreach ($statuses as $label) {
                $code = array_search($label, self::APPROVAL_STATUSES, true);
                if ($code !== false) {
                    $codes[] = (int) $code;
                }
            }
            $query->whereIn('o.flowStatus', $codes === [] ? [-1] : $codes);
        }

        $platforms = $this->filterValues($filters['platform'] ?? '');
        if ($platforms !== []) {
            $query->whereIn('f.platform', $platforms);
        }
    }

    /** @return list<string> */
    private function filterValues(mixed $value): array
    {
        $values = [];
        foreach ((array) $value as $item) {
            if (! is_scalar($item)) {
                continue;
            }
            $item = trim((string) $item);
            if ($item !== '') {
                $values[$item] = true;
            }
        }

        return array_keys($values);
    }

    /** @return array<string,mixed> */
    private function mapRow(object $row): array
    {
        $flowType = (int) ($row->flow_type ?? 0);
        $statusCode = $row->approval_status_code !== null ? (int) $row->approval_status_code : null;

        return [
            'id' => $row->id,
            'flow_id' => (string) $row->flow_id,
            'flow_type' => self::FLOW_TYPES[$flowType] ?? ('其它(' . $flowType . ')'),
            'flow_subject' => (string) ($row->flow_subject ?? ''),
            'approval_status' => $statusCode === null ? '' : (self::APPROVAL_STATUSES[$statusCode] ?? (string) $statusCode),
            'current_approver' => (string) ($row->current_approver ?? ''),
            'apply_user' => (string) ($row->apply_user ?? ''),
            'apply_time' => (string) ($row->apply_time ?? ''),
            'apply_department' => (string) ($row->apply_department ?? ''),
            'remark' => (string) ($row->remark ?? ''),
            'platform' => (string) ($row->platform ?? ''),
            'responsible_department' => (string) ($row->responsible_department ?? ''),
            'shop_head' => (string) ($row->shop_head ?? ''),
            'customer_manager' => (string) ($row->customer_manager ?? ''),
            'shop_type' => (string) ($row->shop_type ?? ''),
            'shop_state' => $row->shop_state === null ? '' : (self::SHOP_STATES[(int) $row->shop_state] ?? (string) $row->shop_state),
            'shop_name' => (string) ($row->shop_name ?? ''),
            'erp_shop_name' => (string) ($row->erp_shop_name ?? ''),
            'trademark_number' => (string) ($row->trademark_number ?? ''),
            'subject_code' => (string) ($row->subject_code ?? ''),
            'information_change_type' => $row->information_change_type === null ? '' : (string) $row->information_change_type,
            'change_reason' => (string) ($row->change_reason ?? ''),
            'change_successful' => $row->change_successful === null ? null : (bool) $row->change_successful,
            'close_reason' => (string) ($row->close_reason ?? ''),
            'expected_closing_time' => (string) ($row->expected_closing_time ?? ''),
            'refund_type' => (string) ($row->refund_type ?? ''),
            'refund_amount' => $row->refund_amount === null ? null : (float) $row->refund_amount,
            'refund_issue' => (string) ($row->refund_issue ?? ''),
            'flow_updated_at' => (string) ($row->flow_updated_at ?? ''),
        ];
    }
}