<?php

namespace App\Business;

use App\Models\Business\ThirdPartyWarehouseQuote;
use Carbon\Carbon;
use Illuminate\Database\QueryException;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Schema;

/**
 * 三方仓仓储报价的唯一读写入口。
 *
 * 结算只需按仓库和结算期查找生效日不晚于该期间的最新启用记录，
 * 因此每次价格变化都新增版本，不覆盖旧报价。
 */
class ThirdPartyWarehouseQuoteRepository
{
    public function ready(): bool
    {
        try {
            return Schema::hasTable((new ThirdPartyWarehouseQuote())->getTable());
        } catch (QueryException) {
            return false;
        }
    }

    /** @return array{ready:bool,rows:Collection,summary:array<string,int>} */
    public function pageData(): array
    {
        if (! $this->ready()) {
            return $this->emptyPageData();
        }

        try {
            $quotes = ThirdPartyWarehouseQuote::query()
                ->with('owner')
                ->orderByDesc('effective_at')
                ->orderByDesc('id')
                ->get();
        } catch (QueryException) {
            return $this->emptyPageData();
        }

        return [
            'ready' => true,
            'rows' => $quotes->map(fn (ThirdPartyWarehouseQuote $quote): array => $this->present($quote)),
            'summary' => [
                'total' => $quotes->count(),
                'active' => $quotes->where('status', ThirdPartyWarehouseQuote::STATUS_ACTIVE)->count(),
                'warehouses' => $quotes->pluck('warehouse_name')->filter()->unique()->count(),
            ],
        ];
    }

    /**
     * 取某仓库在结算月生效的最新启用报价:生效日 ≤ 结算月月末，按生效日、id 倒序取一条。
     */
    public function effectiveFor(string $warehouseName, string $period): ?ThirdPartyWarehouseQuote
    {
        if (! $this->ready()) {
            return null;
        }

        if (preg_match('/^\d{4}-(0[1-9]|1[0-2])$/', $period) !== 1) {
            return null;
        }

        $monthEnd = Carbon::createFromFormat('Y-m-d', $period . '-01')->endOfMonth()->toDateString();

        try {
            return ThirdPartyWarehouseQuote::query()
                ->where('warehouse_name', trim($warehouseName))
                ->where('status', ThirdPartyWarehouseQuote::STATUS_ACTIVE)
                ->whereDate('effective_at', '<=', $monthEnd)
                ->orderByDesc('effective_at')
                ->orderByDesc('id')
                ->first();
        } catch (QueryException) {
            return null;
        }
    }

    /** @param array<string,mixed> $data */
    public function create(array $data, int $userId): ThirdPartyWarehouseQuote
    {
        return ThirdPartyWarehouseQuote::query()->create([
            'company_id' => company_id(),
            'warehouse_name' => trim((string) $data['warehouse_name']),
            'inbound_rate_per_ton' => $data['inbound_rate_per_ton'],
            'outbound_rate_per_order' => $data['outbound_rate_per_order'],
            'pieces_per_pallet' => $data['pieces_per_pallet'],
            'pallet_area_sqm' => $data['pallet_area_sqm'],
            'storage_rate_per_sqm_month' => $data['storage_rate_per_sqm_month'],
            'effective_at' => $data['effective_at'],
            'status' => ThirdPartyWarehouseQuote::STATUS_ACTIVE,
            'remark' => trim((string) ($data['remark'] ?? '')) ?: null,
            'created_by' => $userId,
            'updated_by' => $userId,
        ]);
    }

    public function setStatus(ThirdPartyWarehouseQuote $quote, string $status, int $userId): ThirdPartyWarehouseQuote
    {
        abort_unless(in_array($status, [
            ThirdPartyWarehouseQuote::STATUS_ACTIVE,
            ThirdPartyWarehouseQuote::STATUS_INACTIVE,
        ], true), 422, '报价状态不合法。');

        $quote->forceFill(['status' => $status, 'updated_by' => $userId])->save();

        return $quote->fresh();
    }

    /** @return array<string,mixed> */
    private function present(ThirdPartyWarehouseQuote $quote): array
    {
        return [
            'id' => 'WHQ-' . str_pad((string) $quote->id, 4, '0', STR_PAD_LEFT),
            'db_id' => $quote->id,
            'warehouse_name' => $quote->warehouse_name,
            'inbound_rate_per_ton' => (float) $quote->inbound_rate_per_ton,
            'outbound_rate_per_order' => (float) $quote->outbound_rate_per_order,
            'pieces_per_pallet' => (float) $quote->pieces_per_pallet,
            'pallet_area_sqm' => (float) $quote->pallet_area_sqm,
            'storage_rate_per_sqm_month' => (float) $quote->storage_rate_per_sqm_month,
            'effective_at' => optional($quote->effective_at)->format('Y-m-d'),
            'status_code' => $quote->status,
            'status' => $quote->statusLabel(),
            'remark' => $quote->remark,
            'creator' => optional($quote->owner)->name ?: '-',
        ];
    }

    /** @return array{ready:false,rows:Collection,summary:array<string,int>} */
    private function emptyPageData(): array
    {
        return [
            'ready' => false,
            'rows' => collect(),
            'summary' => ['total' => 0, 'active' => 0, 'warehouses' => 0],
        ];
    }
}