<?php

namespace App\Http\Controllers\Employer;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Inertia\Inertia;
use App\Models\User;
use App\Models\EmployerProfile;
use Illuminate\Support\Facades\Hash;

class ProfileController extends Controller
{
    private function resolveCurrentUser()
    {
        $sess = session('user');
        $sessId = is_array($sess) ? ($sess['id'] ?? null) : ($sess->id ?? null);
        
        if (!$sessId) {
            $user = User::where('role', 'employer')->first();
            if ($user) {
                session(['user' => (object)[
                    'id' => $user->id,
                    'name' => $user->name,
                    'email' => $user->email,
                    'role' => 'employer',
                    'subscription_status' => $user->subscription_status ?? 'active',
                ]]);
                return $user;
            }
        } else {
            return User::find($sessId);
        }
        
        return null;
    }

    private function buildProfileData($user, $profile)
    {
        return [
            'name' => $user->name,
            'email' => $user->email,
            'phone' => $profile->phone ?? '+971509990001',
            'emirates_id' => [
                'emirates_id_number' => $profile->emirates_id_number ?? '784-1987-5493842-5',
                'name' => $profile->emirates_id_name ?? $user->name,
                'date_of_birth' => $profile->emirates_id_dob ?? '1987-04-14',
                'nationality' => $profile->nationality ?? 'Bangladesh',
                'issue_date' => $profile->emirates_id_issue_date ?? '2025-12-12',
                'expiry_date' => $profile->emirates_id_expiry ?? '2027-12-11',
                'employer' => $profile->emirates_id_employer ?? 'Msj International Technical Services L.L.C UAE',
                'issue_place' => $profile->emirates_id_issue_place ?? 'Dubai',
                'occupation' => $profile->emirates_id_occupation ?? 'Electrician',
                'card_number' => $profile->emirates_id_card_number ?? '151023946',
                'gender' => $profile->emirates_id_gender ?? 'M',
            ],
            'fcm_token' => $user->fcm_token ?? 'fcm_token_example',
            'address' => $profile->address ?? 'Villa 45, Street 12',
            'property_type' => $profile->property_type,
            'profile_photo_url' => $profile->profile_photo_url,
            'email_notifications' => (bool)($profile->email_notifications ?? true),
            'push_notifications' => (bool)($profile->push_notifications ?? true),
        ];
    }

    public function index(Request $request)
    {
        $user = $this->resolveCurrentUser();
        if (!$user) {
            return redirect()->route('employer.dashboard');
        }

        // Fetch or create profile
        $profile = $user->employerProfile;
        if (!$profile) {
            $profile = EmployerProfile::create([
                'user_id' => $user->id,
                'phone' => '+971509990001',
                'emirates_id_number' => '784-1987-5493842-5',
                'emirates_id_name' => 'Mohammad Jobaier Mohammad Abul Kalam',
                'emirates_id_dob' => '1987-04-14',
                'nationality' => 'Bangladesh',
                'emirates_id_issue_date' => '2025-12-12',
                'emirates_id_expiry' => '2027-12-11',
                'emirates_id_employer' => 'Msj International Technical Services L.L.C UAE',
                'emirates_id_issue_place' => 'Dubai',
                'emirates_id_occupation' => 'Electrician',
                'emirates_id_card_number' => '151023946',
                'emirates_id_gender' => 'M',
                'address' => 'Villa 45, Street 12',
            ]);
        }

        $employerProfile = $this->buildProfileData($user, $profile);

        return Inertia::render('Employer/Profile', [
            'employerProfile' => $employerProfile,
        ]);
    }

    public function edit(Request $request)
    {
        $user = $this->resolveCurrentUser();
        if (!$user) {
            return redirect()->route('employer.dashboard');
        }

        $profile = $user->employerProfile;
        if (!$profile) {
            $profile = EmployerProfile::create([
                'user_id' => $user->id,
                'phone' => '+971509990001',
                'emirates_id_number' => '784-1987-5493842-5',
                'emirates_id_name' => 'Mohammad Jobaier Mohammad Abul Kalam',
                'emirates_id_dob' => '1987-04-14',
                'nationality' => 'Bangladesh',
                'emirates_id_issue_date' => '2025-12-12',
                'emirates_id_expiry' => '2027-12-11',
                'emirates_id_employer' => 'Msj International Technical Services L.L.C UAE',
                'emirates_id_issue_place' => 'Dubai',
                'emirates_id_occupation' => 'Electrician',
                'emirates_id_card_number' => '151023946',
                'emirates_id_gender' => 'M',
                'address' => 'Villa 45, Street 12',
            ]);
        }

        $employerProfile = $this->buildProfileData($user, $profile);

        return Inertia::render('Employer/ProfileEdit', [
            'employerProfile' => $employerProfile,
        ]);
    }

    public function update(Request $request)
    {
        $user = $this->resolveCurrentUser();
        if (!$user) {
            return back()->withErrors(['general' => 'User session not found.']);
        }

        $sponsor = \App\Models\Sponsor::where('email', $user->email)->first();

        $request->validate([
            'name' => 'required|string|max:255',
            'email' => [
                'required',
                'string',
                'email',
                'max:255',
                'unique:users,email,' . $user->id,
                $sponsor ? 'unique:sponsors,email,' . $sponsor->id : 'unique:sponsors,email',
            ],
            'phone' => 'required|string|max:255',
            'company_name' => 'nullable|string|max:255',
            'language' => 'nullable|string|in:English,Arabic,english,arabic',
            'notifications' => 'nullable|boolean',
            'nationality' => 'nullable|string|max:255',
            'family_size' => 'nullable|string|max:255',
            'accommodation' => 'nullable|string|max:255',
            'district' => 'nullable|string|max:255',
            'emirates_id_front' => 'nullable|file|image|max:10240',
            'emirates_id_back' => 'nullable|file|image|max:10240',
            'address' => 'nullable|string|max:255',
            'property_type' => 'nullable|string|max:255',
            'profile_photo' => 'nullable|image|max:10240',
            'email_notifications' => 'nullable|boolean',
            'push_notifications' => 'nullable|boolean',
        ]);

        $oldEmail = $user->getOriginal('email') ?? $user->email;

        // Update EmployerProfile
        $profile = $user->employerProfile;
        if (!$profile) {
            $profile = new EmployerProfile(['user_id' => $user->id]);
        }

        // Handle physical uploads/OCR for Emirates ID first to allow name autofill
        $uploaded = false;
        $extractedIdNumber = null;
        $extractedExpiry = null;
        $extractedName = null;
        $extractedDob = null;
        $extractedNationality = null;
        $extractedCardNumber = null;
        $extractedGender = null;
        $extractedOccupation = null;
        $extractedEmployer = null;
        $extractedIssuePlace = null;
        $extractedIssueDate = null;

        if ($request->hasFile('emirates_id_front')) {
            $file = $request->file('emirates_id_front');
            $ocrFront = \App\Services\OcrDocumentService::extractEmiratesIdFrontData($file);
            $extractedIdNumber = $ocrFront['emirates_id_number'] ?? null;
            $extractedName = $ocrFront['name'] ?? null;
            $extractedDob = $ocrFront['date_of_birth'] ?? null;
            $extractedNationality = $ocrFront['nationality'] ?? null;
            $extractedCardNumber = $ocrFront['card_number'] ?? null;
            $extractedGender = $ocrFront['gender'] ?? null;
            $extractedOccupation = $ocrFront['occupation'] ?? null;
            $extractedEmployer = $ocrFront['employer'] ?? null;
            $extractedIssuePlace = $ocrFront['issue_place'] ?? null;
            $profile->emirates_id_front = '[DELETED_FOR_PDPL_COMPLIANCE]';
            $uploaded = true;
        }
        if ($request->hasFile('emirates_id_back')) {
            $file = $request->file('emirates_id_back');
            $ocrBack = \App\Services\OcrDocumentService::extractEmiratesIdBackData($file);
            $extractedExpiry = $ocrBack['expiry_date'] ?? null;
            $extractedIssueDate = $ocrBack['issue_date'] ?? null;
            $profile->emirates_id_back = '[DELETED_FOR_PDPL_COMPLIANCE]';
            $uploaded = true;
        }

        if ($uploaded) {
            // Validate that name was extracted
            if ($request->hasFile('emirates_id_front') && empty($extractedName)) {
                return back()->withErrors(['emirates_id_front' => 'Failed to extract name from the Emirates ID. Please upload a clear image.']);
            }

            // Autofill user's name
            if (!empty($extractedName)) {
                $request->merge(['name' => $extractedName]);
            }
        }

        // Update User Model
        $user->update([
            'name' => $request->name,
            'email' => $request->email,
        ]);

        // Sync with corresponding sponsor record if found
        $matchingSponsor = \App\Models\Sponsor::where('email', $oldEmail)->first();
        if ($matchingSponsor) {
            $sponsorData = [
                'full_name' => $request->name,
                'email' => $request->email,
                'mobile' => $request->phone,
            ];

            if ($uploaded) {
                if ($extractedIdNumber) {
                    $sponsorData['emirates_id'] = $extractedIdNumber;
                }
                if ($extractedExpiry) {
                    $sponsorData['emirates_id_expiry'] = $extractedExpiry;
                }
                if ($extractedName) {
                    $sponsorData['emirates_id_name'] = $extractedName;
                }
                if ($extractedDob) {
                    $sponsorData['emirates_id_dob'] = $extractedDob;
                }
                if ($extractedNationality) {
                    $sponsorData['nationality'] = $extractedNationality;
                }
                if ($extractedGender) {
                    $sponsorData['emirates_id_gender'] = $extractedGender;
                }
                if ($extractedOccupation) {
                    $sponsorData['emirates_id_occupation'] = $extractedOccupation;
                }
                if ($extractedEmployer) {
                    $sponsorData['emirates_id_employer'] = $extractedEmployer;
                }
                if ($extractedIssuePlace) {
                    $sponsorData['emirates_id_issue_place'] = $extractedIssuePlace;
                }
                if ($extractedIssueDate) {
                    $sponsorData['emirates_id_issue_date'] = $extractedIssueDate;
                }
                if ($extractedCardNumber) {
                    $sponsorData['emirates_id_card_number'] = $extractedCardNumber;
                }
            }
            $matchingSponsor->update($sponsorData);
        }

        $profile->phone = $request->phone;
        
        if ($request->has('company_name')) {
            $profile->company_name = $request->company_name;
        }
        if ($request->has('language')) {
            $profile->language = ucfirst(strtolower($request->language));
        }
        if ($request->has('notifications')) {
            $profile->notifications = $request->notifications;
        }
        if ($request->has('nationality') && !$uploaded) {
            $profile->nationality = $request->nationality;
        }
        if ($request->has('family_size')) {
            $profile->family_size = $request->family_size;
        }
        if ($request->has('accommodation')) {
            $profile->accommodation = $request->accommodation;
        }
        if ($request->has('district')) {
            $profile->district = $request->district;
        }
        if ($request->has('address')) {
            $profile->address = $request->address;
        }
        if ($request->has('property_type')) {
            $profile->property_type = $request->property_type;
        }
        if ($request->has('email_notifications')) {
            $profile->email_notifications = $request->email_notifications;
        }
        if ($request->has('push_notifications')) {
            $profile->push_notifications = $request->push_notifications;
        }

        if ($uploaded) {
            $profile->emirates_id_number = $extractedIdNumber ?? $profile->emirates_id_number ?? ('784-' . rand(1975, 2005) . '-' . rand(1000000, 9999999) . '-' . rand(1, 9));
            $profile->emirates_id_expiry = $extractedExpiry ?? $profile->emirates_id_expiry ?? now()->addYears(rand(2, 4))->toDateString();
            
            if ($extractedName) {
                $profile->emirates_id_name = $extractedName;
            }
            if ($extractedDob) {
                $profile->emirates_id_dob = $extractedDob;
            }
            if ($extractedNationality) {
                $profile->nationality = $extractedNationality;
            }
            if ($extractedCardNumber) {
                $profile->emirates_id_card_number = $extractedCardNumber;
            }
            if ($extractedGender) {
                $profile->emirates_id_gender = $extractedGender;
            }
            if ($extractedOccupation) {
                $profile->emirates_id_occupation = $extractedOccupation;
            }
            if ($extractedEmployer) {
                $profile->emirates_id_employer = $extractedEmployer;
            }
            if ($extractedIssuePlace) {
                $profile->emirates_id_issue_place = $extractedIssuePlace;
            }
            if ($extractedIssueDate) {
                $profile->emirates_id_issue_date = $extractedIssueDate;
            }
            
            $profile->verification_status = 'approved';
        }

        // Handle profile photo upload
        if ($request->hasFile('profile_photo')) {
            $file = $request->file('profile_photo');
            $path = $file->store('profile_photos', 'public');
            $profile->profile_photo_url = asset('storage/' . $path);
        }

        $profile->save();

        // Update session user name/email
        session(['user' => (object)[
            'id' => $user->id,
            'name' => $user->name,
            'email' => $user->email,
            'role' => 'employer',
            'subscription_status' => $user->subscription_status ?? 'active',
            'verification_status' => $profile->verification_status ?? 'approved',
        ]]);

        return redirect()->route('employer.profile')->with('success', 'Profile updated successfully.');
    }
}