<?php

namespace App\Http\Controllers\Onboarding;

use App\Models\Business\CourierOnboarding;
use App\Models\Business\CourierOnboardingFile;
use App\Models\Common\Company;
use App\Support\CourierOnboardingService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Routing\Controller;
use Illuminate\Validation\Rule;
use Illuminate\View\View;

/**
 * 快递方扫码打开的免登录入驻填报页。链接里的随机 token 就是凭证，只能读写这一份申请。
 */
class CourierOnboardingForms extends Controller
{
    public function __construct(private readonly CourierOnboardingService $service)
    {
    }

    public function show(string $token): View|Response
    {
        $onboarding = $this->resolve($token);
        if ($onboarding === null) {
            return $this->unavailable();
        }
        $onboarding->load('files');

        return view('onboarding.courier-form', [
            'onboarding' => $onboarding,
            'token' => $token,
            'provinces' => CourierOnboarding::PROVINCES,
            'fileKinds' => CourierOnboardingFile::KINDS,
            'requiredKinds' => CourierOnboardingFile::REQUIRED_KINDS,
            'personKinds' => CourierOnboardingFile::PERSON_KINDS,
            'personRequiredKinds' => CourierOnboardingFile::PERSON_REQUIRED_KINDS,
        ]);
    }

    public function update(Request $request, string $token): RedirectResponse|Response
    {
        $onboarding = $this->resolve($token);
        if ($onboarding === null) {
            return $this->unavailable();
        }
        $data = $request->validate($this->rules(), $this->messages());
        $files = [];
        foreach ((array) $request->file('files', []) as $kind => $uploads) {
            $files[(string) $kind] = array_values(array_filter(is_array($uploads) ? $uploads : [$uploads]));
        }

        $submit = ($data['action'] ?? 'save') === 'submit';
        $this->service->saveCourierForm($onboarding, $data, $files, $submit);

        return redirect()
            ->route('courier-onboarding.form', ['token' => $token])
            ->with('onboarding_success', $submit ? '资料已提交，我们会尽快审核，审核结果请留意对接人通知。' : '资料已暂存，可随时扫码回来继续填写。');
    }

    private function resolve(string $token): ?CourierOnboarding
    {
        $onboarding = $this->service->ready() ? $this->service->findByToken($token) : null;
        if ($onboarding === null || $onboarding->status === CourierOnboarding::STATUS_CANCELLED) {
            return null;
        }

        // 免登录访问没有当前公司上下文；切到申请所属公司，后续按公司隔离的查询才能命中。
        Company::find($onboarding->company_id)?->makeCurrent();

        return $onboarding;
    }

    /**
     * 免登录页不走系统的 404 跳转（会跳到登录页），直接给快递方一个能看懂的提示。
     */
    private function unavailable(): Response
    {
        return response()->view('onboarding.courier-unavailable', [], 404);
    }

    /**
     * @return array<string,mixed>
     */
    private function rules(): array
    {
        $text = ['nullable', 'string', 'max:255'];
        $phone = ['nullable', 'string', 'regex:/^[0-9+\-\s()]{5,20}$/'];
        $money = ['nullable', 'numeric', 'min:0', 'max:100000'];

        return [
            'remark' => ['nullable', 'string', 'max:2000'],
            'action' => ['required', Rule::in(['save', 'submit'])],
            'entity_type' => ['nullable', Rule::in(array_keys(CourierOnboarding::ENTITY_TYPES))],
            'id_number' => ['nullable', 'string', 'regex:/^\s*\d{17}[\dXx]\s*$/'],
            'company_full_name' => $text,
            'unified_social_credit_code' => ['nullable', 'string', 'regex:/^[0-9A-Za-z]{18}$/'],
            'legal_representative' => ['nullable', 'string', 'max:100'],
            'business_address' => $text,
            'carrier_brand' => ['nullable', 'string', 'max:50'],
            'network_name' => ['nullable', 'string', 'max:100'],
            'service_type' => ['nullable', Rule::in(CourierOnboarding::SERVICE_TYPES)],
            'contact_name' => ['nullable', 'string', 'max:100'],
            'contact_phone' => $phone,
            'finance_contact_name' => ['nullable', 'string', 'max:100'],
            'finance_contact_phone' => $phone,
            'pickup_warehouses' => ['nullable', 'string', 'max:1000'],
            'esign_operator_name' => ['nullable', 'string', 'max:100'],
            'esign_account' => ['nullable', 'string', 'max:255'],
            'bank_account_name' => $text,
            'bank_name' => $text,
            'bank_account_number' => ['nullable', 'string', 'regex:/^[0-9\s\-]{6,40}$/'],
            'private_account_name' => $text,
            'private_bank_name' => $text,
            'private_account_number' => ['nullable', 'string', 'regex:/^[0-9\s\-]{6,40}$/'],
            'invoice_type' => ['nullable', Rule::in(CourierOnboarding::INVOICE_TYPES)],
            'tax_rate' => ['nullable', 'numeric', 'min:0', 'max:20'],
            'settlement_cycle' => ['nullable', Rule::in(CourierOnboarding::SETTLEMENT_CYCLES)],
            ...self::quoteRules(),
            'remove_files' => ['nullable', 'array'],
            'remove_files.*' => ['integer'],
            'files' => ['nullable', 'array'],
            'files.*' => ['array', 'max:' . CourierOnboardingService::MAX_FILES_PER_KIND],
            'files.*.*' => ['file', 'max:10240', 'mimes:jpg,jpeg,png,webp,gif,heic,heif,pdf,xls,xlsx'],
        ];
    }

    /**
     * 报价部分的校验规则，后台变价页共用。
     *
     * @return array<string,mixed>
     */
    public static function quoteRules(): array
    {
        $money = ['nullable', 'numeric', 'min:0', 'max:100000'];

        return [
            'quote_mode' => ['nullable', Rule::in(array_keys(CourierOnboarding::QUOTE_MODES))],
            'volumetric_rule' => ['nullable', Rule::in(CourierOnboarding::VOLUMETRIC_RULES)],
            'volumetric_divisor' => ['nullable', 'integer', 'min:1000', 'max:20000'],
            'quote_effective_date' => ['nullable', 'date'],
            'quote_note' => ['nullable', 'string', 'max:2000'],
            'quote_rows' => ['nullable', 'array', 'max:80'],
            'quote_rows.*.region' => ['nullable', 'string', 'max:50'],
            'quote_rows.*.flat' => ['nullable', 'array', 'max:' . \App\Support\CourierQuoteStructure::MAX_BANDS],
            'quote_rows.*.flat.*' => $money,
            'quote_rows.*.base' => $money,
            'quote_rows.*.rates' => ['nullable', 'array', 'max:' . (\App\Support\CourierQuoteStructure::MAX_TIERS + 1)],
            'quote_rows.*.rates.*' => $money,
            'quote_flat_bands' => ['nullable', 'string', 'max:200'],
            'quote_first_weight' => ['nullable', 'numeric', 'min:0', 'max:1000'],
            'quote_rate_tiers' => ['nullable', 'string', 'max:200'],
            'quote_then_mode' => ['nullable', Rule::in(['waybill_rate', 'first_additional'])],
            'min_weight' => ['nullable', 'numeric', 'min:0', 'max:1000'],
            'weight_rounding' => ['nullable', Rule::in(array_keys(\App\Support\CourierQuoteStructure::ROUNDING))],
            'per_ticket_surcharge' => ['nullable', 'numeric', 'min:0', 'max:1000'],
        ];
    }

    /**
     * @return array<string,string>
     */
    private function messages(): array
    {
        return [
            'unified_social_credit_code.regex' => '统一社会信用代码应为 18 位数字或字母。',
            'contact_phone.regex' => '请填写正确的联系电话。',
            'id_number.regex' => '身份证号应为 18 位。',
            'finance_contact_phone.regex' => '请填写正确的联系电话。',
            'bank_account_number.regex' => '银行账号只能包含数字。',
            'private_account_number.regex' => '银行卡号只能包含数字。',
            'volumetric_divisor.min' => '抛比系数一般为 5000、6000、8000 等。',
            'files.*.*.max' => '单个文件不能超过 10MB。',
            'files.*.*.mimes' => '请上传照片、PDF 或 Excel 文件。',
        ];
    }
}