<?php

namespace App\Http\Controllers\Banking;

use App\Abstracts\Http\Controller;
use App\Http\Requests\Banking\MarketingAccountBill as Request;
use App\Models\Banking\MarketingAccountBill;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request as HttpRequest;

class MarketingAccountBills extends Controller
{
    /**
     * 支持的营销账户平台列表
     */
    public const PLATFORMS = [
        'douyin' => 'platform_douyin',
        'taobao-alipay' => 'platform_taobao-alipay',
        'taobao-wechat' => 'platform_taobao-wechat',
        'pinduoduo' => 'platform_pinduoduo',
        'jd-wallet' => 'platform_jd-wallet',
        'dewu' => 'platform_dewu',
        'vipshop' => 'platform_vipshop',
    ];

    public function __construct()
    {
        $this->middleware('permission:read-banking-accounts')->only('storeIndex', 'platformIndex');
        $this->middleware('permission:create-banking-accounts')->only('create', 'store', 'import', 'template');
        $this->middleware('permission:update-banking-accounts')->only('edit', 'update', 'export');
        $this->middleware('permission:delete-banking-accounts')->only('destroy');
    }

    /**
     * 平台选择页
     */
    public function storeIndex()
    {
        return view('banking.marketing_account_bills.store-index', [
            'platforms' => self::PLATFORMS,
        ]);
    }

    /**
     * 单平台账单列表
     */
    public function platformIndex(string $platform)
    {
        return $this->index($platform);
    }

    /**
     * 创建表单
     */
    public function create(string $platform)
    {
        $platform = $this->resolvePlatform($platform);

        return view('banking.marketing_account_bills.form', [
            'platform' => $platform,
            'account' => new MarketingAccountBill([
                'company_id' => company_id(),
                'bill_date' => now()->toDateString(),
            ]),
        ]);
    }

    /**
     * 下载导入模板
     */
    public function template(string $platform)
    {
        $this->resolvePlatform($platform);

        return response()->streamDownload(function () {
            $csv = fopen('php://output', 'w');
            fputs($csv, chr(0xEF) . chr(0xBB) . chr(0xBF)); // BOM for Excel

            fputcsv($csv, [
                '店铺名称', '账单日期', '总存入金额', '总转入金额', '总转出金额',
                '非赠款消耗金额', '赠款消耗金额', '消返红包消耗金额', '立减红包消耗金额',
                '共享钱包消耗金额', '共享赠款消耗金额', '当日资金总金额', '期末总余额',
                '赠款余额', '非赠款余额', '备注',
            ]);

            fclose($csv);
        }, "marketing_account_bills_{$platform}_template.csv", [
            'Content-Type' => 'text/csv; charset=UTF-8',
        ]);
    }

    /**
     * 批量导出
     */
    public function export(HttpRequest $request, string $platform)
    {
        $this->resolvePlatform($platform);

        $ids = $request->validate([
            'ids' => ['nullable', 'array', 'max:5000'],
            'ids.*' => ['integer'],
        ])['ids'] ?? [];

        $query = MarketingAccountBill::platform($platform)->oldest('id');

        if (!empty($ids)) {
            $query->whereKey($ids);
        }

        $bills = $query->get();

        return response()->streamDownload(function () use ($bills) {
            $csv = fopen('php://output', 'w');
            fputs($csv, chr(0xEF) . chr(0xBB) . chr(0xBF));

            fputcsv($csv, [
                '店铺名称', '账单日期', '总存入金额', '总转入金额', '总转出金额',
                '非赠款消耗金额', '赠款消耗金额', '消返红包消耗金额', '立减红包消耗金额',
                '共享钱包消耗金额', '共享赠款消耗金额', '当日资金总金额', '期末总余额',
                '赠款余额', '非赠款余额', '备注',
            ]);

            foreach ($bills as $bill) {
                fputcsv($csv, [
                    $bill->store_name,
                    $bill->bill_date->toDateString(),
                    $bill->total_deposit,
                    $bill->total_transfer_in,
                    $bill->total_transfer_out,
                    $bill->non_grant_consumption,
                    $bill->grant_consumption,
                    $bill->rebate_redpack_consumption,
                    $bill->discount_redpack_consumption,
                    $bill->shared_wallet_consumption,
                    $bill->shared_grant_consumption,
                    $bill->daily_total_amount,
                    $bill->period_end_balance,
                    $bill->grant_balance,
                    $bill->non_grant_balance,
                    $bill->notes,
                ]);
            }

            fclose($csv);
        }, 'marketing_account_bills_export.csv', [
            'Content-Type' => 'text/csv; charset=UTF-8',
        ]);
    }

    /**
     * 批量导入
     */
    public function import(HttpRequest $request, string $platform): RedirectResponse
    {
        $this->resolvePlatform($platform);

        $validated = $request->validate([
            'import' => ['required', 'file', 'mimes:xlsx,xls,csv', 'max:5120'],
        ], [
            'import.required' => trans('marketing_account_bills.import_required'),
            'import.mimes' => trans('marketing_account_bills.import_file_type'),
            'import.max' => trans('marketing_account_bills.import_file_size'),
        ]);

        $file = $validated['import'];
        $handle = fopen($file->getRealPath(), 'r');

        // Skip BOM
        $bom = fread($handle, 3);
        if ($bom !== chr(0xEF) . chr(0xBB) . chr(0xBF)) {
            rewind($handle);
        }

        // Skip header
        fgetcsv($handle);

        $count = 0;
        $companyId = company_id();
        $userId = user()->id;

        while (($row = fgetcsv($handle)) !== false) {
            if (empty($row[0]) && empty($row[1])) {
                continue;
            }

            MarketingAccountBill::create([
                'company_id' => $companyId,
                'platform' => $platform,
                'store_name' => $row[0] ?? '',
                'bill_date' => $row[1] ?? now()->toDateString(),
                'total_deposit' => (float) ($row[2] ?? 0),
                'total_transfer_in' => (float) ($row[3] ?? 0),
                'total_transfer_out' => (float) ($row[4] ?? 0),
                'non_grant_consumption' => (float) ($row[5] ?? 0),
                'grant_consumption' => (float) ($row[6] ?? 0),
                'rebate_redpack_consumption' => (float) ($row[7] ?? 0),
                'discount_redpack_consumption' => (float) ($row[8] ?? 0),
                'shared_wallet_consumption' => (float) ($row[9] ?? 0),
                'shared_grant_consumption' => (float) ($row[10] ?? 0),
                'daily_total_amount' => (float) ($row[11] ?? 0),
                'period_end_balance' => (float) ($row[12] ?? 0),
                'grant_balance' => (float) ($row[13] ?? 0),
                'non_grant_balance' => (float) ($row[14] ?? 0),
                'notes' => $row[15] ?? null,
                'created_from' => 'core::ui',
                'created_by' => $userId,
            ]);

            $count++;
        }

        fclose($handle);

        flash(trans('marketing_account_bills.import_success', ['count' => $count]))->success();

        return redirect()->route('marketing-account-bills.platform.index', $platform);
    }

    /**
     * 存储新账单
     */
    public function store(Request $request, string $platform): RedirectResponse
    {
        $this->resolvePlatform($platform);
        $data = $request->validated();

        MarketingAccountBill::create(array_merge($data, [
            'company_id' => company_id(),
            'platform' => $platform,
            'created_from' => 'core::ui',
            'created_by' => user()->id,
        ]));

        flash(trans('messages.success.created', ['type' => $this->platformTitle($platform)]))->success();

        return redirect()->route('marketing-account-bills.platform.index', $platform);
    }

    /**
     * 编辑表单
     */
    public function edit(string $platform, MarketingAccountBill $marketingAccountBill)
    {
        abort_unless($marketingAccountBill->platform === $this->resolvePlatform($platform), 404);

        return view('banking.marketing_account_bills.form', [
            'platform' => $marketingAccountBill->platform,
            'account' => $marketingAccountBill,
        ]);
    }

    /**
     * 更新账单
     */
    public function update(Request $request, string $platform, MarketingAccountBill $marketingAccountBill): RedirectResponse
    {
        abort_unless($marketingAccountBill->platform === $this->resolvePlatform($platform), 404);

        $marketingAccountBill->update($request->validated());

        flash(trans('messages.success.updated', ['type' => $this->platformTitle($platform)]))->success();

        return redirect()->route('marketing-account-bills.platform.index', $platform);
    }

    /**
     * 删除账单
     */
    public function destroy(string $platform, MarketingAccountBill $marketingAccountBill): RedirectResponse
    {
        abort_unless($marketingAccountBill->platform === $this->resolvePlatform($platform), 404);

        $marketingAccountBill->delete();

        flash(trans('messages.success.deleted', ['type' => $this->platformTitle($platform)]))->success();

        return redirect()->route('marketing-account-bills.platform.index', $platform);
    }

    /**
     * 列表页
     */
    private function index(string $platform)
    {
        $platform = $this->resolvePlatform($platform);

        return view('banking.marketing_account_bills.index', [
            'platform' => $platform,
            'accounts' => MarketingAccountBill::platform($platform)
                ->orderBy('bill_date', 'desc')
                ->orderBy('id', 'desc')
                ->paginate(setting('default.list_limit', 25)),
        ]);
    }

    /**
     * 校验并返回有效平台标识
     */
    private function resolvePlatform(string $platform): string
    {
        abort_unless(array_key_exists($platform, self::PLATFORMS), 404);

        return $platform;
    }

    /**
     * 获取平台中文标题
     */
    private function platformTitle(string $platform): string
    {
        return trans('marketing_account_bills.' . $platform);
    }
}