<?php
session_start();
if (!isset($_SESSION['user_id'])) {
    header("Location: login.php");
    exit();
}

// --- Connessione al database ---
$mysqli = new mysqli('localhost', 'admin_valucrm', 'RCMvalus1994!', 'admin_valucrm');
if ($mysqli->connect_error) {
    die("Connessione al database fallita: " . $mysqli->connect_error);
}

/**
 * Normalizza una stringa per i confronti unici.
 */
function normalize_string(string $s): string {
    $s = mb_convert_encoding($s, 'UTF-8', mb_detect_encoding($s));
    $s = mb_strtolower($s, 'UTF-8');
    $s = iconv('UTF-8', 'ASCII//TRANSLIT', $s);
    $s = str_replace(["'", "’"], ' ', $s);
    $s = preg_replace('/\s+/', ' ', $s);
    return trim($s);
}

/**
 * Carica un CSV pipe-delimited (salta header) e restituisce array di [raw, addr].
 */
function load_csv_data(string $file): array {
    $out = [];
    if (!file_exists($file)) return $out;
    if (($h = fopen($file, 'r')) !== false) {
        // salta header
        fgetcsv($h, 0, '|');
        while ($r = fgetcsv($h, 0, '|')) {
            if (count($r) >= 2) {
                $out[] = [
                    'raw'  => trim($r[0]),
                    'addr' => trim($r[1])
                ];
            }
        }
        fclose($h);
    }
    return $out;
}

// --- 1) Carico CSV ---
$csv_entries = load_csv_data('csvconce.csv');

// --- 2) Carico la lista dei nomi normalizzati già in DB ---
$db_norm_names = [];
$sql = "SELECT DISTINCT company_name FROM clients";
if ($res = $mysqli->query($sql)) {
    while ($row = $res->fetch_assoc()) {
        $db_norm_names[] = $row['company_name'];  // in DB salvi già il nome normalizzato
    }
    $res->free();
} else {
    die("Errore query clients: " . $mysqli->error);
}

// --- 3) Costruisco lista di voci valide (solo quelle NON in DB) ---
$valid_entries = [];
foreach ($csv_entries as $e) {
    $norm = normalize_string($e['raw']);
    if (!in_array($norm, $db_norm_names, true)) {
        $valid_entries[] = [
            'raw'  => $e['raw'],
            'addr' => $e['addr']
        ];
    }
}

// --- 4) Estraggo l’elenco unico dei nomi e costruisco mappa raw => [indirizzi…] ---
$name_list   = [];
$address_map = [];
foreach ($valid_entries as $e) {
    $name_list[] = $e['raw'];
    $address_map[$e['raw']][] = $e['addr'];
}
$name_list = array_values(array_unique($name_list));
foreach ($address_map as $raw => $addrs) {
    $address_map[$raw] = array_values(array_unique($addrs));
}

// JSON per JS
$name_list_json   = json_encode($name_list,   JSON_UNESCAPED_UNICODE);
$address_map_json = json_encode($address_map, JSON_UNESCAPED_UNICODE);

// --- 5) Gestione del POST ---
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // input raw
    $raw_name   = trim($_POST['company_name']    ?? '');
    $addr_input = trim($_POST['address']         ?? '');
    $phone      = trim($_POST['phone_number']    ?? '');
    $email      = trim($_POST['email_contacted'] ?? '');
    $status     = trim($_POST['status']          ?? '');
    $notes      = trim($_POST['notes']           ?? '');
    $user_id    = $_SESSION['user_id'];

    // normalizzo il nome
    $norm_name = normalize_string($raw_name);

    // 5.1 Validazione base: nome e indirizzo devono essere tra quelli caricati
    if (
        !in_array($raw_name, $name_list, true)
        || !isset($address_map[$raw_name])
        || !in_array($addr_input, $address_map[$raw_name], true)
    ) {
        echo "<div class='alert alert-danger'>Errore: nome o indirizzo non validi.</div>";
    } else {

        // 5.2 Controllo lato server: azienda già esistente?
        $stmt = $mysqli->prepare("SELECT 1 FROM clients WHERE company_name = ?");
        if (!$stmt) {
            die("<div class='alert alert-danger'>Errore prepare: " . htmlspecialchars($mysqli->error) . "</div>");
        }
        $stmt->bind_param('s', $norm_name);
        $stmt->execute();
        $stmt->store_result();

        if ($stmt->num_rows > 0) {
            echo "<div class='alert alert-danger'>Errore: azienda già prenotata in precedenza.</div>";
            $stmt->close();
        } else {
            $stmt->close();

            // --- Raccolta dei piani ---
            $plans = [];
            if (!empty($_POST['plan_buyer_check'])) {
                $plans[] = "Buyer - " . $mysqli->real_escape_string($_POST['plan_buyer']);
            }
            if (!empty($_POST['plan_seller_check'])) {
                $plans[] = "Seller - " . $mysqli->real_escape_string($_POST['plan_seller']);
            }
            if (!empty($_POST['plan_remarketing_check'])) {
                $plans[] = "Remarketing - " . $mysqli->real_escape_string($_POST['plan_remarketing']);
            }

            // Piani custom
            $custom = [];
            foreach ($_POST as $k => $v) {
                if (preg_match('/^custom_plan_name_(\d+)$/', $k, $m)) {
                    $i = $m[1];
                    if (!empty($_POST["custom_plan_price_{$i}"])) {
                        $n = $mysqli->real_escape_string($v);
                        $p = $mysqli->real_escape_string($_POST["custom_plan_price_{$i}"]);
                        $custom[] = "{$n} - {$p}";
                    }
                }
            }

            $plan_str = implode(', ', $plans);
            if ($custom) {
                $plan_str .= ($plan_str ? ', ' : '') . 'Custom Plans: ' . implode(', ', $custom);
            }

            // --- 5.3 Inserimento in DB con created_at e last_modified ---
            $now = date('Y-m-d H:i:s');

            $ins = $mysqli->prepare(
                "INSERT INTO clients
                    (company_name, phone_number, address, email_contacted, status, notes, plan, user_id, created_at, last_modified)
                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"
            );
            if (!$ins) {
                die("<div class='alert alert-danger'>Errore prepare inserimento: " . htmlspecialchars($mysqli->error) . "</div>");
            }

            $ins->bind_param(
                'sssssssiss',
                $norm_name,   // company_name (normalizzato)
                $phone,       // phone_number
                $addr_input,  // address
                $email,       // email_contacted
                $status,      // status
                $notes,       // notes
                $plan_str,    // plan
                $user_id,     // user_id (int)
                $now,         // created_at
                $now          // last_modified
            );

            if ($ins->execute()) {
                echo "<div class='alert alert-success'>Cliente aggiunto con successo.</div>";
                // Ricarico la pagina per aggiornare dati/autocomplete
                header("Refresh:1");
            } else {
                echo "<div class='alert alert-danger'>Errore inserimento: "
                     . htmlspecialchars($ins->error) . "</div>";
            }
            $ins->close();
        }
    }
}
?>
<!DOCTYPE html>
<html lang="it">
<head>
  <meta charset="UTF-8">
  <title>ValuCRM - Aggiungi Cliente</title>
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <link rel="stylesheet" href="assets/css/futuristic-theme.css">
  <style>
    .page-header {
      padding: 2rem 0;
      margin-bottom: 2rem;
      text-align: center;
    }
    
    .form-card {
      background: var(--gradient-card);
      border: 2px solid var(--color-border-secondary);
      border-radius: var(--radius-xl);
      padding: 2rem;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-lg);
    }
    
    .form-section-title {
      font-family: var(--font-heading);
      font-size: 1.25rem;
      color: var(--color-text-primary);
      margin-bottom: 1.5rem;
      padding-bottom: 0.5rem;
      border-bottom: 2px solid var(--color-border-primary);
    }
    
    .ui-autocomplete {
      background: var(--color-bg-card);
      border: 2px solid var(--color-border-primary);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-xl);
      max-height: 300px;
      overflow-y: auto;
    }
    
    .ui-menu-item {
      padding: 0.5rem 1rem;
      color: var(--color-text-secondary);
      cursor: pointer;
      transition: all var(--transition-fast);
    }
    
    .ui-menu-item:hover,
    .ui-state-active {
      background: var(--color-bg-hover) !important;
      color: var(--color-primary) !important;
      border: none !important;
    }
  </style>
</head>
<body>
<div class="container mt-4">
  <div class="page-header">
    <h1>➕ Aggiungi Nuovo Cliente</h1>
    <p style="color: var(--color-text-secondary);">Compila il form per aggiungere un cliente al sistema</p>
  </div>
  
  <div class="mb-4">
    <a href="index.php" class="btn btn-secondary">← Torna alla Home</a>
    <a href="dashboard.php" class="btn btn-primary">📊 Dashboard</a>
  </div>

  <div class="form-card">
    <form method="post">
      <div class="form-section-title">📋 Informazioni Azienda</div>
    <div class="form-group">
      <label for="company_name">Nome azienda</label>
      <input type="text" id="company_name" name="company_name"
             class="form-control" placeholder="Inizia a digitare..." required>
    </div>

    <div class="form-group">
      <label for="address">Indirizzo</label>
      <input type="text" id="address" name="address"
             class="form-control" placeholder="Seleziona prima il nome" required>
    </div>

    <div class="form-group">
      <label for="phone_number">Telefono</label>
      <input type="text" id="phone_number" name="phone_number"
             class="form-control" required>
    </div>

    <div class="form-group">
      <label for="email_contacted">Email contattata</label>
      <input type="email" id="email_contacted" name="email_contacted"
             class="form-control" required>
    </div>

    <div class="form-group">
      <label for="status">Status</label>
      <select id="status" name="status" class="form-control" required>
        <option>In trattativa</option>
        <option>Inviato mail</option>
        <option>Chiamato</option>
        <option>Demo in corso</option>
        <option>Cliente attivo</option>
      </select>
    </div>

      <div class="form-section-title mt-4">💼 Piani e Servizi</div>
      
      <div class="form-group">
        <label class="form-label">Piani Standard</label>

        <div class="form-check mb-3">
          <input type="checkbox" id="plan_buyer_check" name="plan_buyer_check" class="form-check-input">
          <label class="form-check-label" for="plan_buyer_check">🛒 Buyer</label>
          <select id="plan_buyer" name="plan_buyer" class="form-control mt-2" disabled>
            <option>Basic</option>
            <option>Medium</option>
            <option>UNLIMITED</option>
          </select>
        </div>

        <div class="form-check mb-3">
          <input type="checkbox" id="plan_seller_check" name="plan_seller_check" class="form-check-input">
          <label class="form-check-label" for="plan_seller_check">💰 Seller</label>
          <select id="plan_seller" name="plan_seller" class="form-control mt-2" disabled>
            <option>Basic</option>
            <option>Medium</option>
            <option>UNLIMITED</option>
          </select>
        </div>

        <div class="form-check mb-3">
          <input type="checkbox" id="plan_remarketing_check" name="plan_remarketing_check" class="form-check-input">
          <label class="form-check-label" for="plan_remarketing_check">📢 Remarketing</label>
          <select id="plan_remarketing" name="plan_remarketing" class="form-control mt-2" disabled>
            <option>Basic</option>
            <option>Medium</option>
            <option>UNLIMITED</option>
          </select>
        </div>
      </div>

      <div class="form-group">
        <label class="form-label">Piani Personalizzati</label>
        <div id="custom_plans_container">
          <div class="custom-plan-row mb-2">
            <input type="text" name="custom_plan_name_1" class="form-control mb-2" placeholder="Nome piano">
            <input type="text" name="custom_plan_price_1" class="form-control mb-2" placeholder="Prezzo">
          </div>
        </div>
        <button type="button" id="add_custom_plan" class="btn btn-secondary btn-sm">+ Aggiungi Piano</button>
      </div>

    <div class="form-group">
      <label for="notes">Note</label>
      <textarea id="notes" name="notes" class="form-control"></textarea>
    </div>

      <div class="form-section-title mt-4">📝 Note Aggiuntive</div>
      
      <div class="form-group">
        <label for="notes">Note</label>
        <textarea id="notes" name="notes" class="form-control" rows="4"></textarea>
      </div>

      <div class="text-center mt-4">
        <button type="submit" class="btn btn-primary btn-lg">
          ✅ Aggiungi Cliente al Sistema
        </button>
      </div>
    </form>
  </div>
</div>

<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>
<script>
  // dati per autocomplete
  var nameItems  = <?php echo $name_list_json; ?>;
  var addressMap = <?php echo $address_map_json; ?>;

  $(function(){
    // autocomplete nome azienda
    $("#company_name").autocomplete({
      source: nameItems,
      minLength: 2,
      select: function(e, ui){
        var name  = ui.item.value;
        var addrs = addressMap[name] || [];
        $("#address").val('');
        $("#address").autocomplete('option', 'source', addrs);
        if (addrs.length === 1) {
          $("#address").val(addrs[0]);
        }
      }
    });

    // autocomplete indirizzo (vuoto finché non scelgo nome)
    $("#address").autocomplete({
      source: [],
      minLength: 0
    }).focus(function(){
      $(this).autocomplete("search", "");
    });

    // toggle piani standard
    $('#plan_buyer_check').change(function(){
      $('#plan_buyer').prop('disabled', !this.checked);
    });
    $('#plan_seller_check').change(function(){
      $('#plan_seller').prop('disabled', !this.checked);
    });
    $('#plan_remarketing_check').change(function(){
      $('#plan_remarketing').prop('disabled', !this.checked);
    });

    // aggiunta piani custom
    var idx = 1;
    $('#add_custom_plan').click(function(){
      idx++;
      $('#custom_plans_container').append(
        '<div class="custom-plan-row">'+
          '<input type="text" name="custom_plan_name_'+idx+'" class="form-control mb-2" placeholder="Nome piano">'+
          '<input type="text" name="custom_plan_price_'+idx+'" class="form-control mb-2" placeholder="Prezzo">'+
        '</div>'
      );
    });
  });
</script>
</body>
</html>