<?php

namespace App\Http\Controllers\Business;

use App\Models\Business\CourierOnboarding;
use App\Models\Business\CourierOnboardingEvent;
use App\Models\Business\CourierOnboardingFile;
use App\Support\CourierOnboardingService;
use App\Support\CourierOnboardingReviewers;
use App\Support\QrCode;
use App\Utilities\SystemAccess;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\Storage;
use Illuminate\Validation\ValidationException;
use Illuminate\View\View;
use Symfony\Component\HttpFoundation\StreamedResponse;

class CourierOnboardings extends Controller
{
    public function __construct(private readonly CourierOnboardingService $service)
    {
    }

    public function store(Request $request): RedirectResponse
    {
        $this->ensureReady();
        $data = $request->validate([
            'courier_name' => ['required', 'string', 'max:100'],
            'invite_label' => ['nullable', 'string', 'max:100'],
            'valid_days' => ['nullable', 'integer', 'min:1', 'max:180'],
            'workplatform_expcode' => ['required', 'string', 'max:64', 'regex:/^[0-9A-Za-z_\-]+$/'],
            ...CourierOnboarding::profileRules(),
        ], [
            'courier_name.required' => '请先定好系统快递名称（需与报价名、发货数据里的快递名称一致）。',
            'workplatform_expcode.required' => '请填写快递公司代码（与快递资料「快递公司代码」一致）。',
            'workplatform_expcode.regex' => '快递公司代码只能包含字母、数字、下划线和短横线。',
            ...CourierOnboarding::profileMessages(),
        ], CourierOnboarding::profileAttributes());
        $code = strtoupper(trim((string) $data['workplatform_expcode']));
        $taken = CourierOnboarding::query()
            ->where('workplatform_expcode', $code)
            ->whereNotIn('status', [CourierOnboarding::STATUS_REJECTED, CourierOnboarding::STATUS_CANCELLED])
            ->exists();
        if ($taken) {
            throw ValidationException::withMessages(['workplatform_expcode' => "快递公司代码「{$code}」已被其他入驻申请使用。"]);
        }

        $onboarding = $this->service->invite(
            $data['invite_label'] ?? null,
            (int) ($data['valid_days'] ?? CourierOnboardingService::DEFAULT_VALID_DAYS),
            (int) user_id(),
            $data['courier_name'],
        );
        $onboarding->update(['workplatform_expcode' => $code, ...$this->profileValues($data)]);

        return redirect()->route('business.courier-onboardings.show', $onboarding)
            ->with('success', '入驻二维码已生成，发给快递方扫码填写即可。');
    }

    public function show(CourierOnboarding $onboarding): View
    {
        $this->ensureReady();
        try {
            app(\App\Support\CourierQuoteSignatureService::class)->refreshPending();
        } catch (\Throwable $exception) {
            report($exception);
        }
        $onboarding->load(['files', 'events.actor', 'quoteVersion.signature']);
        $reviewers = app(CourierOnboardingReviewers::class);
        $reviewAccess = in_array($onboarding->status, ['submitted', 'first_approved', 'returned'], true)
            ? $reviewers->access($onboarding, (int) user_id()) : ['allowed' => false, 'message' => '当前申请无需审核。'];

        return view('business.pages.courier-payables.courier-onboarding-show', [
            'onboarding' => $onboarding,
            'formUrl' => $this->formUrl($onboarding),
            'signatures' => $this->service->agreementSignatures($onboarding),
            'signedAgreement' => $this->service->signedAgreement($onboarding),
            'quoteSignature' => $onboarding->quoteSignature(),
            'esignReady' => $this->service->esignReady(),
            'canFirstReview' => $reviewAccess['allowed'],
            'canFinalReview' => $reviewAccess['allowed'],
            'reviewAccess' => $reviewAccess,
            'reviewerSettings' => $reviewers->settings(),
            'isAdmin' => $this->isAdmin(),
            'quoteVersions' => $onboarding->status === CourierOnboarding::STATUS_ACTIVATED ? $this->requotes()->versions($onboarding) : collect(),
        ]);
    }

    /** 后台变价页：复用入驻报价填写区，以最新版本（或已退回的变价单）为底稿。 */
    public function requote(CourierOnboarding $onboarding): View|RedirectResponse
    {
        $this->ensureReady();
        $quoteManagement = route('business.pages.show', ['section' => 'courier-payables', 'page' => 'quote-management']);
        if ($onboarding->status !== CourierOnboarding::STATUS_ACTIVATED) {
            return redirect()->to($quoteManagement)->with('success', '这家快递还没开通，开通后才能变价。');
        }
        $requotes = $this->requotes();
        $open = $requotes->openChange($onboarding);
        if ($open !== null && $open->status === \App\Models\Business\CourierQuoteChange::STATUS_PENDING_REVIEW) {
            return redirect()->route('business.courier-quote-changes.show', $open)
                ->with('success', "已有待审核的变价单 {$open->number}，审核完成后再发起新的变价。");
        }

        $version = $requotes->latestVersion($onboarding);
        $payload = $open?->quote_payload ?? $requotes->currentPayload($onboarding);
        if ($open === null) {
            // 新变价默认从明天起执行。
            $payload['quote_effective_date'] = today()->addDay()->toDateString();
        }

        return view('onboarding.courier-form', [
            'onboarding' => $requotes->draftModel($onboarding, $payload),
            'token' => '',
            'provinces' => CourierOnboarding::PROVINCES,
            'fileKinds' => CourierOnboardingFile::KINDS,
            'requiredKinds' => CourierOnboardingFile::REQUIRED_KINDS,
            'personKinds' => CourierOnboardingFile::PERSON_KINDS,
            'personRequiredKinds' => CourierOnboardingFile::PERSON_REQUIRED_KINDS,
            'requote' => [
                'action' => route('business.courier-onboardings.requote.store', $onboarding),
                'back' => $quoteManagement,
                'courier' => $onboarding->courier_name,
                'signer' => trim(($onboarding->isPerson() ? '' : $onboarding->company_full_name . ' · ') . $onboarding->esign_operator_name . ' ' . $onboarding->esign_account),
                'version' => $version,
                'change' => $open,
                'summary' => old('summary', $open?->summary),
            ],
        ]);
    }

    public function storeRequote(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $this->ensureReady();
        $data = $request->validate([
            ...\App\Http\Controllers\Onboarding\CourierOnboardingForms::quoteRules(),
            'summary' => ['required', 'string', 'min:2', 'max:2000'],
            'quote_end_date' => ['nullable', 'date_format:Y-m-d', 'after_or_equal:quote_effective_date'],
        ], [
            'summary.required' => '请写一下这次变价的原因或依据，审核和对账时要看。',
            'quote_end_date.after_or_equal' => '结束日期不能早于执行日期。',
        ]);
        $change = $this->requotes()->submit($onboarding, $data, (int) user_id());

        return redirect()->route('business.courier-quote-changes.show', $change)
            ->with('success', "变价单 {$change->number} 已提交审核。审核通过后会自动推送到快递的 e签宝签署。");
    }

    /** @return array<string,?string> */
    private function profileValues(array $data): array
    {
        $values = [];
        foreach (array_keys(CourierOnboarding::PROFILE_FIELDS) as $field) {
            $values[$field] = filled($data[$field] ?? null) ? trim((string) $data[$field]) : null;
        }

        return $values;
    }

    private function requotes(): \App\Support\CourierRequoteService
    {
        return app(\App\Support\CourierRequoteService::class);
    }

    public function qr(Request $request, CourierOnboarding $onboarding): Response
    {
        $this->ensureReady();
        $svg = QrCode::svg($this->formUrl($onboarding), 8);
        $headers = ['Content-Type' => 'image/svg+xml; charset=utf-8', 'Cache-Control' => 'private, no-store'];
        if ($request->boolean('download')) {
            $headers['Content-Disposition'] = 'attachment; filename="courier-onboarding-' . $onboarding->number . '.svg"';
        }

        return response($svg, 200, $headers);
    }

    public function file(CourierOnboarding $onboarding, CourierOnboardingFile $file): StreamedResponse
    {
        $this->ensureReady();
        abort_unless((int) $file->onboarding_id === (int) $onboarding->id, 404);
        abort_unless(Storage::disk('uploads')->exists($file->path), 404, '附件不存在。');

        return Storage::disk('uploads')->response($file->path, $file->original_name, [
            'Content-Type' => $file->mime ?: 'application/octet-stream',
        ], request()->boolean('download') ? 'attachment' : 'inline');
    }

    public function firstApprove(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $note = $request->validate(['note' => ['nullable', 'string', 'max:1000']])['note'] ?? null;
        $this->service->firstApprove($onboarding, (int) user_id(), $note);

        return $this->back($onboarding, '初审通过，已转财务复审。');
    }

    public function returnForChanges(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $reason = $request->validate(['reason' => ['required', 'string', 'max:1000']], ['reason.required' => '请写明需要快递方补充或修改的内容。'])['reason'];
        $this->service->returnForChanges($onboarding, (int) user_id(), $reason);

        return $this->back($onboarding, '已退回补件，快递方用原二维码即可修改后重新提交。');
    }

    public function reject(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $reason = $request->validate(['reason' => ['required', 'string', 'max:1000']], ['reason.required' => '请填写不予合作的原因。'])['reason'];
        $this->service->reject($onboarding, (int) user_id(), $reason);

        return $this->back($onboarding, '已标记为不予合作。');
    }

    public function cancel(CourierOnboarding $onboarding): RedirectResponse
    {
        $this->service->cancel($onboarding, (int) user_id());

        return $this->back($onboarding, '邀请已作废，原二维码不能再打开。');
    }

    public function extend(CourierOnboarding $onboarding): RedirectResponse
    {
        $this->service->extend($onboarding, (int) user_id());

        return $this->back($onboarding, '链接有效期已延长 30 天。');
    }

    public function updateInternal(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $data = $request->validate([
            'courier_name' => ['nullable', 'string', 'max:100'],
            'reconciler' => ['nullable', 'string', 'max:100'],
            ...CourierOnboarding::profileRules(true),
        ], CourierOnboarding::profileMessages(), CourierOnboarding::profileAttributes());
        if ($request->hasAny(['courier_name', 'reconciler'])) {
            // 只提交了其中一项时，另一项沿用原值。
            $data['courier_name'] = $request->has('courier_name') ? ($data['courier_name'] ?? null) : $onboarding->courier_name;
            $data['reconciler'] = $request->has('reconciler') ? ($data['reconciler'] ?? null) : $onboarding->reconciler;
            $this->service->updateInternal($onboarding, $data, (int) user_id());
        }
        // 表单里带了快递资料字段才更新（只改名称/对账人的旧表单不会清空它们）。
        $profile = array_intersect_key($this->profileValues($data), $request->only(array_keys(CourierOnboarding::PROFILE_FIELDS)));
        if ($profile !== []) {
            $onboarding->update([...$profile, 'updated_by' => (int) user_id()]);
        }

        return $this->back($onboarding, '内部信息已保存。');
    }

    /**
     * 手动补录 ERP 开通信息（钉钉流程同步不到、或名称对不上时用）。
     * 快递资料按快递代码把入驻和工作平台老数据合成一行。
     */
    public function erpOpening(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $data = $request->validate([
            'workplatform_expcode' => ['nullable', 'string', 'max:64'],
            'erp_account_id' => ['nullable', 'string', 'max:64'],
        ]);
        // 快递公司代码在发码时已必填；这里留空表示沿用原代码。填了代码或 ERP账户ID 视为已开通，都空则恢复「待 ERP 开通」。
        $code = filled($data['workplatform_expcode'] ?? null) ? strtoupper(trim((string) $data['workplatform_expcode'])) : null;
        $accountId = filled($data['erp_account_id'] ?? null) ? trim((string) $data['erp_account_id']) : null;
        $opened = $code !== null || $accountId !== null;
        $onboarding->update([
            'workplatform_expcode' => $code ?? $onboarding->workplatform_expcode,
            'erp_account_id' => $accountId,
            'erp_opened_at' => $opened ? ($onboarding->erp_opened_at ?? now()) : null,
            'erp_opened_source' => $opened ? 'manual' : null,
            'updated_by' => (int) user_id(),
        ]);

        return $this->back($onboarding, $opened ? 'ERP 开通信息已保存（快递公司代码 ' . $onboarding->workplatform_expcode . '）。' : '已清空 ERP 开通信息，恢复为「待 ERP 开通」。');
    }

    public function finalApprove(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $data = $request->validate([
            'courier_name' => [$onboarding->courier_name ? 'nullable' : 'required', 'string', 'max:100'],
            'reconciler' => ['nullable', 'string', 'max:100'],
            'note' => ['nullable', 'string', 'max:1000'],
        ], ['courier_name.required' => '请填写系统快递名称（需与报价名、发货数据里的快递名称完全一致）。']);
        $onboarding = $this->service->finalApprove($onboarding, $data, (int) user_id());

        if (! $onboarding->quote_version_id) {
            return $this->back($onboarding, '财务复审通过。快递没有填写报价明细，请在报价管理补录后再发起报价确认。');
        }
        if (! $this->service->esignReady()) {
            return $this->back($onboarding, '财务复审通过，首版报价已生成。E 签宝尚未配置，报价确认单暂不能推送；线下签署后可直接开通。');
        }

        try {
            $this->service->pushQuote($onboarding->fresh(), (int) user_id());
        } catch (ValidationException $exception) {
            $message = collect($exception->errors())->flatten()->first() ?: '推送失败';
            CourierOnboardingEvent::create([
                'company_id' => $onboarding->company_id, 'onboarding_id' => $onboarding->id, 'event_type' => 'quote_push_failed',
                'from_status' => $onboarding->status, 'to_status' => $onboarding->status, 'note' => $message,
                'actor_type' => 'user', 'actor_id' => (int) user_id(),
            ]);

            return $this->back($onboarding, '财务复审通过，首版报价已生成，但报价确认单推送失败：' . $message . '。可在右侧重新推送。');
        }

        return $this->back($onboarding, '财务复审通过，报价确认单已推送到快递的 e签宝，等待对方签署。');
    }

    public function pushQuote(CourierOnboarding $onboarding): RedirectResponse
    {
        $this->ensureAdmin();
        $this->service->pushQuote($onboarding, (int) user_id());

        return $this->back($onboarding, '报价确认单已推送到快递的 e签宝，等待对方签署。');
    }

    public function syncQuote(CourierOnboarding $onboarding): RedirectResponse
    {
        $signature = $this->service->syncQuote($onboarding, (int) user_id());

        return $this->back($onboarding, '已同步 e签宝状态：' . $signature->statusLabel() . '。');
    }

    public function signUrl(CourierOnboarding $onboarding): RedirectResponse
    {
        $url = $this->service->quoteSignUrl($onboarding);

        return $this->back($onboarding, '已获取签署链接，签署人用手机打开或扫码即可签署。')->with('quote_sign_url', $url);
    }

    public function activate(Request $request, CourierOnboarding $onboarding): RedirectResponse
    {
        $this->ensureAdmin();
        $note = $request->validate(['offline_note' => ['nullable', 'string', 'max:1000']])['offline_note'] ?? null;
        $this->service->activate($onboarding, (int) user_id(), $note);

        return $this->back($onboarding, '快递已开通，快递资料「入驻快递」里可以查到。');
    }

    private function formUrl(CourierOnboarding $onboarding): string
    {
        $base = trim((string) config('courier_onboarding.public_url', ''));
        if ($base === '') {
            return route('courier-onboarding.form', ['token' => $onboarding->token]);
        }

        return rtrim($base, '/') . route('courier-onboarding.form', ['token' => $onboarding->token], false);
    }

    private function back(CourierOnboarding $onboarding, string $message): RedirectResponse
    {
        return redirect()->route('business.courier-onboardings.show', $onboarding)->with('success', $message);
    }

    private function ensureReady(): void
    {
        abort_unless($this->service->ready(), 503, '快递入驻数据表尚未完成迁移，请联系管理员执行数据库迁移。');
    }

    private function isAdmin(): bool
    {
        return in_array(SystemAccess::roleName(user()), [SystemAccess::SUPER_ADMIN, SystemAccess::ADMIN], true);
    }

    private function ensureAdmin(): void
    {
        abort_unless($this->isAdmin(), 403, '财务复审和开通需要管理员账号。');
    }
}