<?php

declare(strict_types=1);

namespace App\Http\Controllers\Auth;

use App\Enums\SocialAccount\Platform as SocialPlatform;
use App\Enums\SocialAccount\Status;
use App\Models\Workspace;
use App\Services\Social\LinkedInTokenSynchronizer;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use Illuminate\View\View;
use Inertia\Inertia;
use Inertia\Response;
use Laravel\Socialite\Facades\Socialite;
use Symfony\Component\HttpFoundation\Response as SymfonyResponse;

class LinkedInPageController extends SocialController
{
    protected string $driver = 'linkedin-openid';

    protected SocialPlatform $platform = SocialPlatform::LinkedInPage;

    public function connect(Request $request): SymfonyResponse|RedirectResponse
    {
        $this->ensurePlatformEnabled();

        $workspace = $request->user()->currentWorkspace;

        if (! $workspace) {
            return redirect()->route('app.workspaces.create');
        }

        $this->authorize('manageAccounts', $workspace);

        session([
            'social_connect_workspace' => $workspace->id,
            'linkedin_page_reconnect_id' => null,
            'social_connect_onboarding' => $request->boolean('onboarding'),
        ]);

        return Inertia::location(
            Socialite::driver($this->driver)
                ->scopes(config('trypost.platforms.linkedin-page.scopes'))
                ->with([
                    'redirect_uri' => config('services.linkedin-openid.redirect_page'),
                ])
                ->redirect()
                ->getTargetUrl()
        );
    }

    public function callback(Request $request): View|RedirectResponse
    {
        $workspaceId = session('social_connect_workspace');

        if (! $workspaceId) {
            return $this->popupCallback(false, __('accounts.popup_callback.session_expired'), $this->platform->value);
        }

        $workspace = Workspace::find($workspaceId);

        if (! $workspace || ! $request->user()->can('manageAccounts', $workspace)) {
            return $this->popupCallback(false, __('accounts.popup_callback.workspace_not_found'), $this->platform->value);
        }

        try {
            $socialUser = Socialite::driver($this->driver)
                ->scopes(config('trypost.platforms.linkedin-page.scopes'))
                ->with([
                    'redirect_uri' => config('services.linkedin-openid.redirect_page'),
                ])
                ->user();

            // Fetch organizations the user is admin of
            $organizations = $this->fetchOrganizations($socialUser->token);

            if (empty($organizations)) {
                return $this->popupCallback(false, __('accounts.popup_callback.not_linkedin_admin'), $this->platform->value);
            }

            // Store data in session and redirect to selection page
            session([
                'linkedin_page_pending' => [
                    'workspace_id' => $workspace->id,
                    'user_id' => $socialUser->getId(),
                    'name' => $socialUser->getName(),
                    'avatar' => $socialUser->getAvatar(),
                    'token' => $socialUser->token,
                    'refresh_token' => $socialUser->refreshToken,
                    'expires_in' => $socialUser->expiresIn,
                    'approved_scopes' => $socialUser->approvedScopes ?? [],
                    'organizations' => $organizations,
                    'reconnect_id' => session('linkedin_page_reconnect_id'),
                ],
            ]);

            return redirect()->route('app.social.linkedin-page.select-page');
        } catch (\Exception $e) {
            Log::error('LinkedIn Page OAuth Error', [
                'error' => $e->getMessage(),
            ]);

            return $this->popupCallback(false, __('accounts.popup_callback.error_connecting'), $this->platform->value);
        }
    }

    public function selectPage(Request $request): Response|RedirectResponse
    {
        $pendingData = session('linkedin_page_pending');

        if (! $pendingData) {
            session()->flash('flash.banner', __('accounts.flash.session_expired'));
            session()->flash('flash.bannerStyle', 'danger');

            return redirect()->route('app.accounts');
        }

        $workspace = Workspace::find($pendingData['workspace_id']);

        if (! $workspace || ! $request->user()->can('manageAccounts', $workspace)) {
            session()->flash('flash.banner', __('accounts.flash.workspace_not_found'));
            session()->flash('flash.bannerStyle', 'danger');

            return redirect()->route('app.accounts');
        }

        return Inertia::render('accounts/LinkedInPageSelect', [
            'workspace' => $workspace,
            'organizations' => $pendingData['organizations'],
        ]);
    }

    public function select(Request $request): View
    {
        $request->validate([
            'organization_id' => 'required',
            'organization_name' => 'required|string',
            'organization_vanity_name' => 'nullable|string',
            'organization_logo' => 'nullable|string',
        ]);

        $pendingData = session('linkedin_page_pending');

        if (! $pendingData) {
            return $this->popupCallback(false, __('accounts.popup_callback.session_expired'), $this->platform->value);
        }

        $workspace = Workspace::find($pendingData['workspace_id']);

        if (! $workspace || ! $request->user()->can('manageAccounts', $workspace)) {
            return $this->popupCallback(false, __('accounts.popup_callback.workspace_not_found'), $this->platform->value);
        }

        try {
            $avatarPath = uploadFromUrl($request->organization_logo);
            $reconnectId = $pendingData['reconnect_id'] ?? null;

            if ($reconnectId) {
                // Reconnect existing account
                $existingAccount = $workspace->socialAccounts()->find($reconnectId);

                if ($existingAccount) {
                    $existingAccount->update([
                        'platform_user_id' => $request->organization_id,
                        'username' => $request->organization_vanity_name,
                        'display_name' => $request->organization_name,
                        'avatar_url' => $avatarPath,
                        'access_token' => $pendingData['token'],
                        'refresh_token' => $pendingData['refresh_token'],
                        'token_expires_at' => $pendingData['expires_in'] ? now()->addSeconds($pendingData['expires_in']) : null,
                        // LinkedIn returns scope CSV-joined but Socialite splits on space, so re-split here.
                        'scopes' => explode(',', implode(',', $pendingData['approved_scopes'] ?? [])),
                        'meta' => [
                            'organization_id' => $request->organization_id,
                            'admin_user_id' => $pendingData['user_id'],
                            'admin_name' => $pendingData['name'],
                        ],
                    ]);
                    $existingAccount->markAsConnected();

                    // Sync tokens to LinkedIn personal if it exists
                    app(LinkedInTokenSynchronizer::class)->syncTokens($existingAccount);

                    session()->forget(['linkedin_page_pending', 'linkedin_page_reconnect_id']);

                    return $this->popupCallback(true, __('accounts.popup_callback.reconnected'), $this->platform->value);
                }
            }

            $account = $workspace->socialAccounts()->updateOrCreate(
                [
                    'platform' => $this->platform->value,
                    'platform_user_id' => $request->organization_id,
                ],
                [
                    'username' => $request->organization_vanity_name,
                    'display_name' => $request->organization_name,
                    'avatar_url' => $avatarPath,
                    'access_token' => $pendingData['token'],
                    'refresh_token' => $pendingData['refresh_token'],
                    'token_expires_at' => $pendingData['expires_in'] ? now()->addSeconds($pendingData['expires_in']) : null,
                    // LinkedIn returns scope CSV-joined but Socialite splits on space, so re-split here.
                    'scopes' => explode(',', implode(',', $pendingData['approved_scopes'] ?? [])),
                    'status' => Status::Connected,
                    'error_message' => null,
                    'disconnected_at' => null,
                    'meta' => [
                        'organization_id' => $request->organization_id,
                        'admin_user_id' => $pendingData['user_id'],
                        'admin_name' => $pendingData['name'],
                    ],
                ],
            );

            // Sync tokens to LinkedIn personal if it exists
            app(LinkedInTokenSynchronizer::class)->syncTokens($account);

            session()->forget(['linkedin_page_pending', 'linkedin_page_reconnect_id']);

            return $this->popupCallback(true, __('accounts.popup_callback.connected'), $this->platform->value);
        } catch (\Exception $e) {
            Log::error('LinkedIn Page selection error', [
                'error' => $e->getMessage(),
            ]);

            return $this->popupCallback(false, __('accounts.popup_callback.error_connecting_page'), $this->platform->value);
        }
    }

    private function fetchOrganizations(string $accessToken): array
    {
        $response = Http::withToken($accessToken)
            ->get(config('trypost.platforms.linkedin-page.api').'/v2/organizationAcls', [
                'q' => 'roleAssignee',
                'role' => 'ADMINISTRATOR',
                'projection' => '(elements*(organization~(id,localizedName,vanityName,logoV2(original~:playableStreams))))',
            ]);

        if ($response->failed()) {
            Log::error('LinkedIn Organizations fetch error', [
                'error' => $response->body(),
            ]);

            return [];
        }

        $data = $response->json();
        $organizations = [];

        foreach (data_get($data, 'elements', []) as $element) {
            $org = data_get($element, 'organization~', null);
            if ($org) {
                $logoUrl = null;
                $logoUrl = data_get($org, 'logoV2.original~.elements.0.identifiers.0.identifier');

                $organizations[] = [
                    'id' => data_get($org, 'id'),
                    'name' => data_get($org, 'localizedName', 'Unknown'),
                    'vanity_name' => data_get($org, 'vanityName', null),
                    'logo' => $logoUrl,
                ];
            }
        }

        return $organizations;
    }
}