<?php

namespace App\Http\Controllers;

use App\Http\Requests\ProfileUpdateRequest;
use App\Models\UserAddress;
use App\Models\Location;
use App\Services\Location\Geocoder;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Redirect;
use Illuminate\View\View;

class ProfileController extends Controller
{
    /**
     * profile index test
     */
    public function index()
    {
        return $this->frame('profile.partials.addresses-form');
    }

    /**
     * display user's profile forms
     */
    public function edit(Request $request): View
    {
        $user = $request->user();

        // try primary of each kind; fall back to the first of that kind
        $home = $user->addresses()->where('kind', 'home')->where('is_primary', 1)->first()
            ?? $user->addresses()->where('kind', 'home')->first();

        $billing = $user->addresses()->where('kind', 'billing')->where('is_primary', 1)->first()
            ?? $user->addresses()->where('kind', 'billing')->first();

        return view('profile.edit', compact('user', 'home', 'billing'));
    }

    /**
     * Update the user's profile information.
     */
    public function update(ProfileUpdateRequest $request): RedirectResponse
    {
        $request->user()->fill($request->validated());

        if ($request->user()->isDirty('email')) {
            $request->user()->email_verified_at = null;
        }

        $request->user()->save();

        return Redirect::route('profile.edit')->with('status', 'profile-updated');
    }

    /**
     * save or update the user's addresses (/profile/addresses)
     */
    public function saveAddresses(Request $request, Geocoder $geocoder): RedirectResponse
    {
        $user = $request->user();

        $data = $request->validate([
            'home'                => 'array',
            'home.label'          => 'nullable|string|max:100',
            'home.line1'          => 'nullable|string|max:255',
            'home.line2'          => 'nullable|string|max:255',
            'home.city'           => 'nullable|string|max:120',
            'home.state'          => 'nullable|string|max:64',
            'home.postal'         => 'nullable|string|max:32',
            'home.country'        => 'nullable|string|max:64',
            'home.phone'          => 'nullable|string|max:32',

            'billing'             => 'array',
            'billing.label'       => 'nullable|string|max:100',
            'billing.line1'       => 'nullable|string|max:255',
            'billing.line2'       => 'nullable|string|max:255',
            'billing.city'        => 'nullable|string|max:120',
            'billing.state'       => 'nullable|string|max:64',
            'billing.postal'      => 'nullable|string|max:32',
            'billing.country'     => 'nullable|string|max:64',
            'billing.phone'       => 'nullable|string|max:32',
        ]);

        DB::transaction(function () use ($user, $data, $geocoder) {

            $save = function (string $kind, array $payload) use ($user, $geocoder) {
                // short-circuit if nothing filled
                $filled = collect($payload)->only(['line1','line2','city','state','postal','country','phone'])
                    ->filter(fn ($v) => filled($v));
                if ($filled->isEmpty()) {
                    return;
                }

                // upsert a single primary address of this kind
                $addr = UserAddress::updateOrCreate(
                    ['user_id' => $user->id, 'kind' => $kind, 'is_primary' => 1],
                    [
                        'label'   => $payload['label'] ?? ucfirst($kind),
                        'line1'   => $payload['line1'] ?? null,
                        'line2'   => $payload['line2'] ?? null,
                        'city'    => $payload['city'] ?? null,
                        'state'   => $payload['state'] ?? null,
                        'postal'  => $payload['postal'] ?? null,
                        'country' => $payload['country'] ?? null,
                        'phone'   => $payload['phone'] ?? null,
                    ]
                );

                // build a singleLine string to geocode
                $singleLine = collect([
                    $addr->line1, $addr->line2, $addr->city, $addr->state, $addr->postal, $addr->country
                ])->filter()->implode(', ');

                if ($singleLine !== '') {
                    // geocode and link to locations
                    $norm = $geocoder->forward($singleLine);
                    if ($norm) {
                        $loc = Location::findOrCreateNormalized($norm, $singleLine);
                        $addr->location_id = $loc->id;
                        $addr->save();
                    }
                }
            };

            if (isset($data['home'])) {
                $save('home', $data['home']);
            }
            if (isset($data['billing'])) {
                $save('billing', $data['billing']);
            }
        });

        return Redirect::route('profile.edit')->with('status', 'addresses-updated');
    }

    /**
     * Delete the user's account.
     */
    public function destroy(Request $request): RedirectResponse
    {
        $request->validateWithBag('userDeletion', [
            'password' => ['required', 'current_password'],
        ]);

        $user = $request->user();

        Auth::logout();

        $user->delete();

        $request->session()->invalidate();
        $request->session()->regenerateToken();

        return Redirect::to('/');
    }

    /**
     * content frame handler
     */
    private function frame(?string $view = null, array $data = [])
    {
        return view('profile.index', [
            'view'  => $view,
            'data'  => $data,
        ]);
    }

}