<?php
ob_start();
require_once __DIR__ . '/../db/config.php';
session_start();
require_once __DIR__ . '/../fpdf/fpdf.php';

if (!isset($_SESSION["user_id"]))
{
    die('Authentication required. Please log in again.');
}

$user_id = $_SESSION["user_id"];
$lpa_id = isset($_GET['id']) ? (int)$_GET['id'] : null;

if (!$lpa_id)
{
    die('LPA ID is required.');
}

// Fetch LPA data
$stmt = db()->prepare("SELECT * FROM lpa_applications WHERE id = ?");
$stmt->execute([$lpa_id]);
$lpa_data = $stmt->fetch();

if (!$lpa_data)
{
    die('LPA not found.');
}

// Authorization check
if ((int)$lpa_data['user_id'] !== (int)$user_id && ($_SESSION['user_role'] ?? '') !== 'Super User') {
    die('Unauthorized access.');
}

// Fetch attorneys
$stmt = db()->prepare("SELECT * FROM lpa_attorneys WHERE lpa_id = ? AND type = 'primary' ORDER BY id ASC");
$stmt->execute([$lpa_id]);
$primary_attorneys = $stmt->fetchAll();

$stmt = db()->prepare("SELECT * FROM lpa_attorneys WHERE lpa_id = ? AND type = 'replacement' ORDER BY id ASC");
$stmt->execute([$lpa_id]);
$replacement_attorneys = $stmt->fetchAll();

// Fetch notified persons
$stmt = db()->prepare("SELECT * FROM lpa_notified_persons WHERE application_id = ? ORDER BY id ASC");
$stmt->execute([$lpa_id]);
$notified_persons = $stmt->fetchAll();

$lpa_type = $lpa_data['lpa_type'] ?? 'Health & Welfare';
$is_hw = ($lpa_type === 'Health & Welfare');

class OfficialLPAPDF extends FPDF {
    public $lpa_title = '';
    public $lpa_id = '';

    function Header() {
        $this->SetFont('Helvetica', 'B', 14);
        $this->Cell(0, 10, $this->lpa_title, 0, 1, 'C');
        $this->Ln(5);
    }

    function Footer() {
        $this->SetY(-15);
        $this->SetFont('Helvetica', 'I', 8);
        $this->Cell(0, 10, 'Page ' . $this->PageNo() . '/{nb} - LPA Ref: ' . $this->lpa_id, 0, 0, 'C');
    }

    function SectionHeader($title) {
        $this->SetFont('Helvetica', 'B', 12);
        $this->SetFillColor(200, 200, 200);
        $this->Cell(0, 10, $title, 0, 1, 'L', true);
        $this->Ln(2);
    }

    function FieldBox($label, $value, $h = 10) {
        $this->SetFont('Helvetica', 'B', 9);
        $this->Cell(40, $h, $label . ':', 1, 0, 'L');
        $this->SetFont('Helvetica', '', 9);
        $this->Cell(0, $h, $value, 1, 1, 'L');
    }
}

$pdf = new OfficialLPAPDF();
$pdf->lpa_id = $lpa_id;
$pdf->lpa_title = $lpa_type . ' Lasting Power of Attorney ' . ($is_hw ? '(LP1H)' : '(LP1F)');
$pdf->AliasNbPages();
$pdf->AddPage();

// Section 1: The Donor
$pdf->SectionHeader('Section 1: The Donor');
$pdf->FieldBox('Full Name', $lpa_data['donor_name']);
$pdf->FieldBox('Other Names', $lpa_data['other_names']);
$pdf->FieldBox('Date of Birth', $lpa_data['donor_dob']);
$pdf->FieldBox('Email', $lpa_data['customer_email']);
$donor_addr = $lpa_data['donor_address_line1'] . (empty($lpa_data['donor_address_line2']) ? '' : ', ' . $lpa_data['donor_address_line2']) . ', ' . $lpa_data['donor_town'] . ', ' . $lpa_data['donor_postcode'];
$pdf->FieldBox('Address', $donor_addr);
$pdf->Ln(5);

// Section 2: The Attorneys
$pdf->SectionHeader('Section 2: The Attorneys');
$main_attorneys = array_slice($primary_attorneys, 0, 5);
$continuation_attorneys = array_slice($primary_attorneys, 5);

foreach ($main_attorneys as $idx => $att) {
    $name = ($att['title'] ? $att['title'] . ' ' : '') . $att['first_name'] . ' ' . $att['last_name'];
    $pdf->SetFont('Helvetica', 'B', 10);
    $pdf->Cell(0, 8, 'Attorney ' . ($idx + 1), 0, 1);
    $pdf->FieldBox('Name', $name);
    $pdf->FieldBox('Date of Birth', $att['dob']);
    $pdf->FieldBox('Email', $att['email']);
    $addr = $att['address_line1'] . (empty($att['address_line2']) ? '' : ', ' . $att['address_line2']) . ', ' . $att['town'] . ', ' . $att['postcode'];
    $pdf->FieldBox('Address', $addr);
    $pdf->Ln(2);
}
$pdf->Ln(5);

// Section 3: How should the attorneys make decisions?
$pdf->SectionHeader('Section 3: How should the attorneys make decisions?');
$pdf->FieldBox('Decision Type', $lpa_data['attorney_decision_type']);
$pdf->Ln(5);

// Section 4: Replacement Attorneys
$pdf->SectionHeader('Section 4: Replacement Attorneys');
$main_replacements = array_slice($replacement_attorneys, 0, 2);
$continuation_replacements = array_slice($replacement_attorneys, 2);

foreach ($main_replacements as $idx => $att) {
    $name = ($att['title'] ? $att['title'] . ' ' : '') . $att['first_name'] . ' ' . $att['last_name'];
    $pdf->SetFont('Helvetica', 'B', 10);
    $pdf->Cell(0, 8, 'Replacement Attorney ' . ($idx + 1), 0, 1);
    $pdf->FieldBox('Name', $name);
    $addr = $att['address_line1'] . (empty($att['address_line2']) ? '' : ', ' . $att['town'] . ', ' . $att['postcode']);
    $pdf->FieldBox('Address', $addr);
    $pdf->Ln(2);
}
$pdf->Ln(5);

// Section 5: Difference by type
if ($is_hw) {
    $pdf->SectionHeader('Section 5: Life-Sustaining Treatment');
    $pdf->FieldBox('Option Selected', $lpa_data['life_sustaining_treatment']);
} else {
    $pdf->SectionHeader('Section 5: When can the attorneys make decisions?');
    $val = ($lpa_data['life_sustaining_treatment'] === 'Option A') ? 'As soon as registered' : (($lpa_data['life_sustaining_treatment'] === 'Option B') ? 'Only when I cannot make my own decisions' : 'Not specified');
    $pdf->FieldBox('Option Selected', $val);
}
$pdf->Ln(5);

// Section 6: People to Notify
$pdf->SectionHeader('Section 6: People to Notify');
foreach ($notified_persons as $idx => $np) {
    if ($idx >= 5) break; // Main form usually has space for 5
    $pdf->FieldBox('Person ' . ($idx + 1), $np['first_name'] . ' ' . $np['last_name'] . ' (' . $np['postcode'] . ')');
}
$pdf->Ln(5);

// Section 7: Preferences and Instructions
$pdf->SectionHeader('Section 7: Preferences and Instructions');

if (!function_exists('count_lines')) {
    function count_lines($text) {
        if (empty($text)) return 0;
        return substr_count($text, "\n") + 1;
    }
}

$pref_lines = count_lines($lpa_data['preferences']);
$instr_lines = count_lines($lpa_data['instructions']);

$pref_on_main = $lpa_data['preferences'];
$instr_on_main = $lpa_data['instructions'];
$pref_continuation = '';
$instr_continuation = '';

if (strlen($lpa_data['preferences']) > 800 || $pref_lines > 9) {
    $pref_on_main = "See Continuation Sheet LPC";
    $pref_continuation = $lpa_data['preferences'];
}

if (strlen($lpa_data['instructions']) > 800 || $instr_lines > 9) {
    $instr_on_main = "See Continuation Sheet LPC";
    $instr_continuation = $lpa_data['instructions'];
}

$pdf->SetFont('Helvetica', 'B', 10);
$pdf->Cell(0, 8, 'Preferences', 0, 1);
$pdf->SetFont('Helvetica', '', 9);
$pdf->MultiCell(0, 6, $pref_on_main, 1, 'L');
$pdf->Ln(2);

$pdf->SetFont('Helvetica', 'B', 10);
$pdf->Cell(0, 8, 'Instructions', 0, 1);
$pdf->SetFont('Helvetica', '', 9);
$pdf->MultiCell(0, 6, $instr_on_main, 1, 'L');
$pdf->Ln(5);

// Section 8-10: Signatures and Certificate Provider (Skipped/Simplified for now as per Summary)
$pdf->SectionHeader('Section 8-10: Signatures & Certificate Provider');
$pdf->FieldBox('Certificate Provider', $lpa_data['certificate_provider_first_name'] . ' ' . $lpa_data['certificate_provider_last_name']);
$pdf->Ln(10);

// CONTINUATION SHEETS
if (!empty($continuation_attorneys) || !empty($continuation_replacements) || !empty($pref_continuation) || !empty($instr_continuation)) {
    $pdf->AddPage();
    $pdf->SetFont('Helvetica', 'B', 16);
    $pdf->Cell(0, 10, 'Continuation Sheet LPC', 0, 1, 'C');
    $pdf->Ln(10);

    if (!empty($continuation_attorneys)) {
        $pdf->SectionHeader('Section 2 (Continued): More Attorneys');
        foreach ($continuation_attorneys as $idx => $att) {
            $name = ($att['title'] ? $att['title'] . ' ' : '') . $att['first_name'] . ' ' . $att['last_name'];
            $pdf->SetFont('Helvetica', 'B', 10);
            $pdf->Cell(0, 8, 'Attorney ' . ($idx + 6), 0, 1);
            $pdf->FieldBox('Name', $name);
            $pdf->FieldBox('Date of Birth', $att['dob']);
            $pdf->FieldBox('Email', $att['email']);
            $addr = $att['address_line1'] . (empty($att['address_line2']) ? '' : ', ' . $att['address_line2']) . ', ' . $att['town'] . ', ' . $att['postcode'];
            $pdf->FieldBox('Address', $addr);
            $pdf->Ln(2);
        }
    }

    if (!empty($continuation_replacements)) {
        $pdf->SectionHeader('Section 4 (Continued): More Replacement Attorneys');
        foreach ($continuation_replacements as $idx => $att) {
            $name = ($att['title'] ? $att['title'] . ' ' : '') . $att['first_name'] . ' ' . $att['last_name'];
            $pdf->SetFont('Helvetica', 'B', 10);
            $pdf->Cell(0, 8, 'Replacement Attorney ' . ($idx + 3), 0, 1);
            $pdf->FieldBox('Name', $name);
            $addr = $att['address_line1'] . (empty($att['address_line2']) ? '' : ', ' . $att['town'] . ', ' . $att['postcode']);
            $pdf->FieldBox('Address', $addr);
            $pdf->Ln(2);
        }
    }

    if (!empty($pref_continuation)) {
        $pdf->SectionHeader('Section 7 (Continued): Preferences');
        $pdf->SetFont('Helvetica', '', 9);
        $pdf->MultiCell(0, 6, $pref_continuation, 1, 'L');
        $pdf->Ln(5);
    }

    if (!empty($instr_continuation)) {
        $pdf->SectionHeader('Section 7 (Continued): Instructions');
        $pdf->SetFont('Helvetica', '', 9);
        $pdf->MultiCell(0, 6, $instr_continuation, 1, 'L');
        $pdf->Ln(5);
    }
}

$filename = 'LPA_Official_Form_' . str_replace(' ', '_', ($lpa_data['donor_name'] ?? 'Form')) . '_' . date('Ymd') . '.pdf';
$pdf->Output('D', $filename);