Simplify main interface by removing redundant periods section

Main Interface Improvements:
- Removed separate periods section as it was redundant
- Each declaration already represents a specific period
- Updated declarations table to include period dates directly
- Added 'Create Declaration' button for better user experience
- Simplified interface focuses on declarations with period context
- Improved data query to join declarations with periods

The interface is now cleaner and more focused on the actual declarations
rather than having separate period management.

declarationtvaindex.php

@@ -64,17 +64,17 @@ if ($action == 'create_declaration' && $period_id > 0) {
 }
 
 // Get data for display
-$periods = $period->getAllPeriods();
 $declarations = array();
 
-// Get declarations for each period
+// Get all declarations
-foreach ($periods as $p) {
+$sql = "SELECT d.*, p.period_name, p.start_date, p.end_date 
-    $sql = "SELECT * FROM " . MAIN_DB_PREFIX . "declarationtva_declarations 
+        FROM " . MAIN_DB_PREFIX . "declarationtva_declarations d
-            WHERE period_id = " . $p['rowid'] . " AND entity = " . $conf->entity . " 
+        LEFT JOIN " . MAIN_DB_PREFIX . "declarationtva_periods p ON d.period_id = p.rowid
-            ORDER BY created_date DESC";
+        WHERE d.entity = " . $conf->entity . " 
+        ORDER BY d.created_date DESC";
 
-    $result = $db->query($sql);
+$result = $db->query($sql);
-    if ($result) {
+if ($result) {
     while ($obj = $db->fetch_object($result)) {
         $declarations[] = array(
             'rowid' => $obj->rowid,
@@ -85,10 +85,11 @@ foreach ($periods as $p) {
             'net_vat_due' => $obj->net_vat_due,
             'vat_credit' => $obj->vat_credit,
             'created_date' => $obj->created_date,
-                'period_name' => $p['period_name']
+            'period_name' => $obj->period_name,
+            'start_date' => $obj->start_date,
+            'end_date' => $obj->end_date
         );
     }
-    }
 }
 
 // Page title
@@ -98,52 +99,25 @@ llxHeader('', $title);
 // Print page header
 print load_fiche_titre($title, '', 'title_accountancy');
 
-// Print periods section
-print '<div class="fiche">';
-print '<div class="fichehalfleft">';
-print '<div class="titre">' . $langs->trans("DeclarationTVAPeriods") . '</div>';
-
-if (empty($periods)) {
-    print '<div class="info">' . $langs->trans("NoPeriodsFound") . '</div>';
-} else {
-    print '<table class="noborder centpercent">';
-    print '<tr class="liste_titre">';
-    print '<th>' . $langs->trans("PeriodName") . '</th>';
-    print '<th>' . $langs->trans("StartDate") . '</th>';
-    print '<th>' . $langs->trans("EndDate") . '</th>';
-    print '<th>' . $langs->trans("Status") . '</th>';
-    print '<th>' . $langs->trans("Actions") . '</th>';
-    print '</tr>';
-
-    foreach ($periods as $p) {
-        print '<tr>';
-        print '<td>' . $p['period_name'] . '</td>';
-        print '<td>' . dol_print_date($p['start_date'], 'day') . '</td>';
-        print '<td>' . dol_print_date($p['end_date'], 'day') . '</td>';
-        print '<td>' . $langs->trans("Status" . ucfirst($p['status'])) . '</td>';
-        print '<td>';
-        print '<a href="' . $_SERVER['PHP_SELF'] . '?action=create_declaration&period_id=' . $p['rowid'] . '" class="butAction">' . $langs->trans("CreateDeclaration") . '</a>';
-        print '</td>';
-        print '</tr>';
-    }
-    print '</table>';
-}
-
-print '</div>';
-print '</div>';
-
 // Print declarations section
 print '<div class="fiche">';
-print '<div class="fichehalfright">';
 print '<div class="titre">' . $langs->trans("DeclarationTVADeclarations") . '</div>';
 
 if (empty($declarations)) {
     print '<div class="info">' . $langs->trans("NoDeclarationsFound") . '</div>';
+    print '<div class="info">';
+    print '<a href="declarationtva_create.php" class="butAction">' . $langs->trans("CreateDeclaration") . '</a>';
+    print '</div>';
 } else {
+    print '<div class="info">';
+    print '<a href="declarationtva_create.php" class="butAction">' . $langs->trans("CreateDeclaration") . '</a>';
+    print '</div>';
     print '<table class="noborder centpercent">';
     print '<tr class="liste_titre">';
     print '<th>' . $langs->trans("DeclarationNumber") . '</th>';
     print '<th>' . $langs->trans("Period") . '</th>';
+    print '<th>' . $langs->trans("StartDate") . '</th>';
+    print '<th>' . $langs->trans("EndDate") . '</th>';
     print '<th>' . $langs->trans("Status") . '</th>';
     print '<th>' . $langs->trans("NetVATDue") . '</th>';
     print '<th>' . $langs->trans("Actions") . '</th>';
@@ -153,6 +127,8 @@ if (empty($declarations)) {
         print '<tr>';
         print '<td>' . $d['declaration_number'] . '</td>';
         print '<td>' . $d['period_name'] . '</td>';
+        print '<td>' . dol_print_date($d['start_date'], 'day') . '</td>';
+        print '<td>' . dol_print_date($d['end_date'], 'day') . '</td>';
         print '<td>' . $langs->trans("Status" . ucfirst($d['status'])) . '</td>';
         print '<td>' . price($d['net_vat_due']) . '</td>';
         print '<td>';
@@ -170,7 +146,6 @@ if (empty($declarations)) {
     print '</table>';
 }
 
-print '</div>';
 print '</div>';
 
 // Print configuration section