<?php

namespace App\Http\Controllers\Care;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Care\Concerns\ScopesToAccount;
use App\Models\Consultation;
use App\Models\InvestigationType;
use App\Models\Practitioner;
use App\Services\Care\ConsultationService;
use App\Services\Care\OrganizationResolver;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class ConsultationController extends Controller
{
    use ScopesToAccount;

    public function __construct(
        protected ConsultationService $consultations,
    ) {}

    public function show(Request $request, Consultation $consultation): View
    {
        $this->authorizeAbility($request, 'consultations.view');
        $this->authorizeConsultation($request, $consultation);

        $consultation->load([
            'patient', 'practitioner', 'visit', 'appointment',
            'vitalSigns', 'diagnoses', 'documents',
            'investigationRequests.investigationType', 'prescriptions.items',
        ]);

        $canManage = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'consultations.manage');
        $canVitals = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'vitals.manage');
        $canRequestInvestigations = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'investigations.request');
        $canPrescribe = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'prescriptions.manage');
        $canGenerateBill = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'bills.manage');

        $practitioners = Practitioner::owned($this->ownerRef($request))
            ->where('organization_id', $this->organization($request)->id)
            ->where('is_active', true)
            ->orderBy('name')
            ->get();

        $investigationTypes = InvestigationType::owned($this->ownerRef($request))
            ->where('organization_id', $this->organization($request)->id)
            ->where('is_active', true)
            ->orderBy('name')
            ->get();

        return view('care.consultations.show', [
            'consultation' => $consultation,
            'practitioners' => $practitioners,
            'investigationTypes' => $investigationTypes,
            'canManage' => $canManage,
            'canVitals' => $canVitals,
            'canRequestInvestigations' => $canRequestInvestigations,
            'canPrescribe' => $canPrescribe,
            'canGenerateBill' => $canGenerateBill,
            'isCompleted' => $consultation->status === Consultation::STATUS_COMPLETED,
        ]);
    }

    public function update(Request $request, Consultation $consultation): RedirectResponse
    {
        $canManage = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'consultations.manage');
        $canVitals = app(\App\Services\Care\CarePermissions::class)
            ->can($this->member($request), 'vitals.manage');

        abort_unless($canManage || $canVitals, 403);
        $this->authorizeConsultation($request, $consultation);
        abort_if($consultation->status === Consultation::STATUS_COMPLETED, 422);

        $validated = $this->validatedConsultationData($request, $canManage, $canVitals);

        $this->consultations->save(
            $consultation,
            $this->ownerRef($request),
            $validated,
            $this->ownerRef($request),
        );

        return back()->with('success', 'Consultation saved.');
    }

    public function complete(Request $request, Consultation $consultation): RedirectResponse
    {
        $this->authorizeAbility($request, 'consultations.manage');
        $this->authorizeConsultation($request, $consultation);

        $this->consultations->complete(
            $consultation,
            $this->ownerRef($request),
            $this->ownerRef($request),
        );

        return redirect()->route('care.patients.show', $consultation->patient)
            ->with('success', 'Consultation completed.');
    }

    protected function authorizeConsultation(Request $request, Consultation $consultation): void
    {
        $this->authorizeOwner($request, $consultation);
        $consultation->loadMissing('visit');
        abort_unless($consultation->visit->organization_id === $this->organization($request)->id, 404);

        $branchId = app(OrganizationResolver::class)->branchScope($this->member($request));
        if ($branchId !== null && $consultation->visit->branch_id !== $branchId) {
            abort(404);
        }
    }

    /**
     * @return array<string, mixed>
     */
    protected function validatedConsultationData(Request $request, bool $canManage, bool $canVitals): array
    {
        $rules = [];

        if ($canManage) {
            $rules = array_merge($rules, [
                'symptoms' => ['nullable', 'string', 'max:10000'],
                'clinical_notes' => ['nullable', 'string', 'max:20000'],
                'practitioner_id' => ['nullable', 'integer', 'exists:care_practitioners,id'],
                'diagnoses' => ['nullable', 'array'],
                'diagnoses.*.code' => ['nullable', 'string', 'max:50'],
                'diagnoses.*.description' => ['nullable', 'string', 'max:500'],
                'diagnoses.*.is_primary' => ['nullable', 'boolean'],
                'diagnoses.*.notes' => ['nullable', 'string', 'max:2000'],
                'documents' => ['nullable', 'array'],
                'documents.*' => ['file', 'max:10240', 'mimes:pdf,jpeg,png,jpg,webp'],
            ]);
            $canVitals = true;
        }

        if ($canVitals) {
            $rules['vitals'] = ['nullable', 'array'];
            $rules['vitals.bp_systolic'] = ['nullable', 'integer', 'min:50', 'max:300'];
            $rules['vitals.bp_diastolic'] = ['nullable', 'integer', 'min:30', 'max:200'];
            $rules['vitals.pulse'] = ['nullable', 'integer', 'min:20', 'max:250'];
            $rules['vitals.temperature'] = ['nullable', 'numeric', 'min:30', 'max:45'];
            $rules['vitals.weight_kg'] = ['nullable', 'numeric', 'min:0', 'max:500'];
            $rules['vitals.height_cm'] = ['nullable', 'numeric', 'min:0', 'max:300'];
            $rules['vitals.spo2'] = ['nullable', 'integer', 'min:50', 'max:100'];
            $rules['vitals.respiratory_rate'] = ['nullable', 'integer', 'min:5', 'max:80'];
        }

        return $request->validate($rules);
    }
}