Merge pull request 'feat(planner): add functionality to find and plan tasks in the next available time slot, including date selection and UI updates' (#53) from dev into main

Reviewed-on: #53

api/planner.php

@@ -4,6 +4,7 @@
  */
 
 require_once __DIR__ . '/../includes/auth.php';
+require_once __DIR__ . '/../includes/settings.php';
 require_once __DIR__ . '/../includes/integrations/microsoft.php';
 $user = require_auth(true);
 $db = get_db_connection();
@@ -237,13 +238,28 @@ try {
             } catch (Throwable $e) {}
         }
 
-        // Indien gekoppeld aan Outlook, werk afspraak bij via Graph API
+        $targetDate = !empty($data['date']) ? trim($data['date']) : null;
-        if (!empty($existingTask['external_id']) && $existingTask['source'] === 'OUTLOOK') {
+        $planDate = null;
-            try {
+        $newPlanId = null;
+
+        if ($targetDate && preg_match('/^\d{4}-\d{2}-\d{2}$/', $targetDate)) {
+            $stmtPlan = $db->prepare("
+                INSERT INTO daily_plans (user_id, plan_date)
+                VALUES (?, ?)
+                ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id)
+            ");
+            $stmtPlan->execute([$user['id'], $targetDate]);
+            $newPlanId = (int)$db->lastInsertId();
+            $planDate = $targetDate;
+        } else {
             $stmtPlan = $db->prepare("SELECT plan_date FROM daily_plans WHERE id = ?");
             $stmtPlan->execute([$existingTask['daily_plan_id']]);
             $planDate = $stmtPlan->fetchColumn() ?: date('Y-m-d');
+        }
 
+        // Indien gekoppeld aan Outlook, werk afspraak bij via Graph API
+        if (!empty($existingTask['external_id']) && $existingTask['source'] === 'OUTLOOK') {
+            try {
                 microsoft_update_event($user['id'], $existingTask['external_id'], [
                     'subject'    => $title,
                     'date'       => $planDate,
@@ -255,18 +271,28 @@ try {
             }
         }
 
+        if ($newPlanId) {
+            $stmtUpdate = $db->prepare("
+                UPDATE tasks 
+                SET title = ?, priority = ?, time_block_start = ?, time_block_end = ?, duration_minutes = ?, daily_plan_id = ?
+                WHERE id = ? AND user_id = ?
+            ");
+            $stmtUpdate->execute([$title, $priority, $timeBlockStart, $timeBlockEnd, $durationMinutes, $newPlanId, $taskId, $user['id']]);
+        } else {
             $stmtUpdate = $db->prepare("
                 UPDATE tasks 
                 SET title = ?, priority = ?, time_block_start = ?, time_block_end = ?, duration_minutes = ?
                 WHERE id = ? AND user_id = ?
             ");
             $stmtUpdate->execute([$title, $priority, $timeBlockStart, $timeBlockEnd, $durationMinutes, $taskId, $user['id']]);
+        }
 
         echo json_encode([
             'success' => true,
             'time_block_start' => $timeBlockStart,
             'time_block_end' => $timeBlockEnd,
-            'duration_minutes' => $durationMinutes
+            'duration_minutes' => $durationMinutes,
+            'date' => $planDate
         ]);
         exit;
     }
@@ -619,6 +645,178 @@ try {
         exit;
     }
 
+    // 11. Zoek eerstvolgende vrije open blok binnen werktijden (Release v2.1)
+    if ($action === 'find_next_free_slot') {
+        $rawInput = json_decode(file_get_contents('php://input'), true);
+        $data = is_array($rawInput) ? $rawInput : $_GET;
+        $duration = max(5, (int)($data['duration_minutes'] ?? 30));
+        $excludeTaskId = (int)($data['task_id'] ?? 0);
+
+        $workdaySettings = get_workday_settings();
+        $workdayStartStr = $workdaySettings['workday_start'] ?? '08:30';
+        $workdayEndStr   = $workdaySettings['workday_end'] ?? '17:30';
+        $lunchStartStr   = $workdaySettings['lunch_start'] ?? '12:30';
+        $lunchEndStr     = $workdaySettings['lunch_end'] ?? '13:00';
+
+        $toMins = function(string $timeStr): int {
+            $parts = explode(':', trim($timeStr));
+            return ((int)($parts[0] ?? 0) * 60) + (int)($parts[1] ?? 0);
+        };
+
+        $toTimeStr = function(int $mins): string {
+            $h = (int)floor($mins / 60);
+            $m = $mins % 60;
+            return sprintf('%02d:%02d', $h, $m);
+        };
+
+        $workdayStartMin = $toMins($workdayStartStr);
+        $workdayEndMin   = $toMins($workdayEndStr);
+        $lunchStartMin   = $toMins($lunchStartStr);
+        $lunchEndMin     = $toMins($lunchEndStr);
+
+        $tz = new DateTimeZone('Europe/Amsterdam');
+        $now = new DateTime('now', $tz);
+
+        // Huidige tijd afronden naar hele kwartieren
+        $nowH = (int)$now->format('G');
+        $nowM = (int)$now->format('i');
+        if ($nowM % 15 !== 0) {
+            $nowM = (int)(ceil($nowM / 15) * 15);
+            if ($nowM >= 60) {
+                $nowH += (int)floor($nowM / 60);
+                $nowM = $nowM % 60;
+            }
+        }
+        $currentQuarterMin = $nowH * 60 + $nowM;
+
+        $dutchDays = [1 => 'Maandag', 2 => 'Dinsdag', 3 => 'Woensdag', 4 => 'Donderdag', 5 => 'Vrijdag', 6 => 'Zaterdag', 7 => 'Zondag'];
+        $dutchMonths = ['', 'jan', 'feb', 'mrt', 'apr', 'mei', 'jun', 'jul', 'aug', 'sep', 'okt', 'nov', 'dec'];
+
+        $checkDate = clone $now;
+        $foundSlot = null;
+        $maxDays = 14;
+        $checkedDays = 0;
+
+        while ($checkedDays < $maxDays) {
+            $dayOfWeek = (int)$checkDate->format('N'); // 1 = Ma, 7 = Zo
+
+            // Weekend overslaan
+            if ($dayOfWeek === 6 || $dayOfWeek === 7) {
+                $checkDate->modify('+1 day');
+                continue;
+            }
+
+            $dateStr = $checkDate->format('Y-m-d');
+            $isToday = ($dateStr === $now->format('Y-m-d'));
+
+            // Bepaal vroegste startminuut voor deze dag (op hele kwartieren)
+            if ($isToday) {
+                $earliestMin = max($workdayStartMin, $currentQuarterMin);
+                if ($earliestMin % 15 !== 0) {
+                    $earliestMin = (int)(ceil($earliestMin / 15) * 15);
+                }
+            } else {
+                $earliestMin = $workdayStartMin;
+                if ($earliestMin % 15 !== 0) {
+                    $earliestMin = (int)(ceil($earliestMin / 15) * 15);
+                }
+            }
+
+            // Alleen zoeken als er binnen de werkdag nog voldoende tijd is voor duration
+            if ($earliestMin + $duration <= $workdayEndMin) {
+                $busyIntervals = [];
+
+                // Lunchpauze
+                if ($lunchEndMin > $lunchStartMin) {
+                    $busyIntervals[] = [$lunchStartMin, $lunchEndMin];
+                }
+
+                // Bestaande taken van de gebruiker op deze dag
+                $stmtTasks = $db->prepare("
+                    SELECT t.id, t.time_block_start, t.time_block_end, t.duration_minutes 
+                    FROM tasks t
+                    INNER JOIN daily_plans dp ON t.daily_plan_id = dp.id
+                    WHERE t.user_id = ? 
+                      AND dp.plan_date = ? 
+                      AND t.time_block_start IS NOT NULL 
+                      AND t.time_block_start != ''
+                      AND t.status != 'CANCELLED'
+                ");
+                $stmtTasks->execute([$user['id'], $dateStr]);
+                while ($t = $stmtTasks->fetch()) {
+                    if ($excludeTaskId > 0 && (int)$t['id'] === $excludeTaskId) {
+                        continue;
+                    }
+                    $tStart = $toMins($t['time_block_start']);
+                    $tDur = (int)($t['duration_minutes'] ?: 30);
+                    $tEnd = !empty($t['time_block_end']) ? $toMins($t['time_block_end']) : ($tStart + $tDur);
+                    if ($tEnd > $tStart) {
+                        $busyIntervals[] = [$tStart, $tEnd];
+                    }
+                }
+
+                // Outlook afspraken
+                if (function_exists('microsoft_fetch_events_range')) {
+                    try {
+                        $outlookEvts = microsoft_fetch_events_range($user['id'], $dateStr, $dateStr, false);
+                        foreach ($outlookEvts as $oe) {
+                            if (!empty($oe['is_all_day'])) continue;
+                            if (empty($oe['start']) || empty($oe['end'])) continue;
+                            $oStart = $toMins($oe['start']);
+                            $oEnd = $toMins($oe['end']);
+                            if ($oEnd > $oStart) {
+                                $busyIntervals[] = [$oStart, $oEnd];
+                            }
+                        }
+                    } catch (Throwable $e) {}
+                }
+
+                // Doorzoek kwartierslots
+                for ($slotStart = $earliestMin; ($slotStart + $duration) <= $workdayEndMin; $slotStart += 15) {
+                    $slotEnd = $slotStart + $duration;
+                    $hasCollision = false;
+
+                    foreach ($busyIntervals as [$bStart, $bEnd]) {
+                        if ($slotStart < $bEnd && $slotEnd > $bStart) {
+                            $hasCollision = true;
+                            break;
+                        }
+                    }
+
+                    if (!$hasCollision) {
+                        $foundSlot = [
+                            'date'             => $dateStr,
+                            'start'            => $toTimeStr($slotStart),
+                            'end'              => $toTimeStr($slotEnd),
+                            'duration_minutes' => $duration,
+                            'is_today'         => $isToday,
+                            'formatted_date'   => $isToday 
+                                ? 'Vandaag (' . date('j', strtotime($dateStr)) . ' ' . $dutchMonths[(int)date('n', strtotime($dateStr))] . ')' 
+                                : $dutchDays[(int)$checkDate->format('N')] . ' ' . date('j', strtotime($dateStr)) . ' ' . $dutchMonths[(int)date('n', strtotime($dateStr))],
+                        ];
+                        break 2;
+                    }
+                }
+            }
+
+            $checkDate->modify('+1 day');
+            $checkedDays++;
+        }
+
+        if ($foundSlot) {
+            echo json_encode([
+                'success' => true,
+                'slot'    => $foundSlot,
+            ]);
+        } else {
+            echo json_encode([
+                'success' => false,
+                'error'   => "Geen vrij blok van {$duration} minuten gevonden binnen de gezette werktijden ({$workdayStartStr} - {$workdayEndStr}) voor de komende {$maxDays} werkdagen.",
+            ]);
+        }
+        exit;
+    }
+
     echo json_encode(['error' => 'Onbekende actie']);
 } catch (Exception $e) {
     http_response_code(500);

planner.php

@@ -860,7 +860,8 @@ for ($h = $startHour; $h <= $endHour; $h++) {
                                                     'end' => $task['time_block_end'] ?? '',
                                                     'duration' => (int)($task['duration_minutes'] ?: 30),
                                                     'source' => $task['source'],
-                                                    'external_id' => $task['external_id'] ?? ''
+                                                    'external_id' => $task['external_id'] ?? '',
+                                                    'date' => $selectedDate
                                                 ]), ENT_QUOTES, 'UTF-8') ?>)" title="Taak & Tijd aanpassen" class="p-1.5 rounded-lg text-slate-400 hover:text-indigo-600 dark:hover:text-indigo-400 hover:bg-indigo-500/10 opacity-0 group-hover:opacity-100 transition cursor-pointer">
                                                     <i data-lucide="edit-3" class="w-3.5 h-3.5"></i>
                                                 </button>
@@ -1178,6 +1179,19 @@ for ($h = $startHour; $h <= $endHour; $h++) {
                                                         <span class="text-[10px] font-bold px-2 py-0.5 rounded-full <?= $t['priority'] === 'P1' ? 'bg-rose-50 dark:bg-rose-500/10 text-rose-700 dark:text-rose-400 border border-rose-200 dark:border-rose-500/20' : ($t['priority'] === 'P2' ? 'bg-amber-50 dark:bg-amber-500/10 text-amber-700 dark:text-amber-400 border border-amber-200 dark:border-amber-500/20' : 'bg-slate-100 dark:bg-slate-800 text-slate-600 dark:text-slate-400 border border-slate-200 dark:border-slate-700') ?>">
                                                             <?= $t['priority'] ?>
                                                         </span>
+                                                        <button onclick="openEditTaskModal(<?= htmlspecialchars(json_encode([
+                                                            'id' => (int)$t['id'],
+                                                            'title' => $t['title'],
+                                                            'priority' => $t['priority'],
+                                                            'start' => $t['time_block_start'] ?? '',
+                                                            'end' => $t['time_block_end'] ?? '',
+                                                            'duration' => (int)($t['duration_minutes'] ?: 30),
+                                                            'source' => $t['source'],
+                                                            'external_id' => $t['external_id'] ?? '',
+                                                            'date' => $selectedDate
+                                                        ]), ENT_QUOTES, 'UTF-8') ?>)" title="Taak & Tijdblok bewerken" class="p-1 rounded-lg text-slate-400 hover:text-indigo-600 dark:hover:text-indigo-400 hover:bg-slate-100 dark:hover:bg-slate-800 transition cursor-pointer">
+                                                            <i data-lucide="edit-3" class="w-3 h-3"></i>
+                                                        </button>
                                                     </div>
                                                 </div>
                                             </div>
@@ -2005,9 +2019,38 @@ if ($isAjaxRequest) {
             </div>
         </div>
 
-        <div class="grid grid-cols-1 sm:grid-cols-2 gap-3">
+        <!-- Datum & Tijdblok met slimme "Plan in open blok" actieknop -->
+        <div class="space-y-2 pt-1 border-t border-slate-100 dark:border-slate-800/80">
+            <div class="flex items-center justify-between">
+                <span class="text-xs font-semibold text-slate-700 dark:text-slate-300">Datum & Tijdblok</span>
+                <button type="button" onclick="planInNextOpenBlock()" id="btnPlanOpenBlock" class="inline-flex items-center space-x-1.5 px-3 py-1.5 rounded-xl bg-gradient-to-r from-indigo-600 to-sky-600 hover:from-indigo-500 hover:to-sky-500 text-white text-xs font-bold transition shadow-xs cursor-pointer active:scale-95" title="Vind automatisch het eerstvolgende vrije kwartierblok binnen werktijden">
+                    <i data-lucide="sparkles" class="w-3.5 h-3.5"></i>
+                    <span>Plan in open blok</span>
+                </button>
+            </div>
+
+            <!-- Succes / statusmelding wanneer een open blok gevonden is -->
+            <div id="editTaskOpenBlockNotice" class="hidden p-2.5 rounded-xl bg-emerald-50 dark:bg-emerald-500/10 border border-emerald-200 dark:border-emerald-500/20 text-emerald-800 dark:text-emerald-300 text-[11px] flex items-center justify-between">
+                <div class="flex items-center space-x-1.5 min-w-0 flex-1 mr-2">
+                    <i data-lucide="check-circle" class="w-3.5 h-3.5 text-emerald-600 dark:text-emerald-400 flex-shrink-0"></i>
+                    <span id="editTaskOpenBlockNoticeText" class="truncate font-semibold"></span>
+                </div>
+                <button type="button" onclick="document.getElementById('editTaskOpenBlockNotice').classList.add('hidden')" class="p-0.5 text-emerald-600 dark:text-emerald-400 hover:text-emerald-800 rounded">
+                    <i data-lucide="x" class="w-3 h-3"></i>
+                </button>
+            </div>
+        </div>
+
+        <div class="grid grid-cols-1 sm:grid-cols-3 gap-3">
             <div>
-                <label class="block text-xs font-semibold text-slate-700 dark:text-slate-300 mb-1">Starttijd</label>
+                <label for="editTaskDate" class="block text-xs font-semibold text-slate-700 dark:text-slate-300 mb-1">Datum</label>
+                <input type="date" id="editTaskDate" class="w-full bg-slate-50/70 dark:bg-[#0c0f17]/60 border border-slate-300 dark:border-slate-800 rounded-xl px-2.5 py-2 text-slate-900 dark:text-white text-xs focus:outline-none focus:ring-1 focus:ring-indigo-500 shadow-2xs">
+            </div>
+            <div>
+                <div class="flex items-center justify-between mb-1">
+                    <label class="block text-xs font-semibold text-slate-700 dark:text-slate-300">Starttijd</label>
+                    <button type="button" onclick="clearEditTaskTimes()" title="Tijd wissen" class="text-[10px] text-slate-400 hover:text-rose-500 cursor-pointer">Wissen</button>
+                </div>
                 <div class="relative">
                     <input type="text" id="editTaskStartTime" placeholder="Bijv. 09:30" class="w-full bg-slate-50/70 dark:bg-[#0c0f17]/60 border border-slate-300 dark:border-slate-800 rounded-xl pl-3 pr-8 py-2 text-slate-900 dark:text-white text-xs font-mono focus:outline-none focus:ring-1 focus:ring-indigo-500 shadow-2xs" oninput="onEditTaskTimeOrDurationChange('start')">
                     <i data-lucide="clock" class="w-4 h-4 text-slate-400 absolute right-2.5 top-2.5 pointer-events-none"></i>
@@ -2016,10 +2059,10 @@ if ($isAjaxRequest) {
             <div>
                 <div class="flex items-center justify-between mb-1">
                     <label class="block text-xs font-semibold text-slate-700 dark:text-slate-300">Eindtijd</label>
-                    <span class="text-[9px] text-indigo-600 dark:text-indigo-400 font-medium">Vrij invulbaar</span>
+                    <span class="text-[9px] text-indigo-600 dark:text-indigo-400 font-medium">Auto/Vrij</span>
                 </div>
                 <div class="relative">
-                    <input type="text" id="editTaskEndTime" placeholder="Bijv. 09:40" class="w-full bg-slate-50/70 dark:bg-[#0c0f17]/60 border border-slate-300 dark:border-slate-800 rounded-xl pl-3 pr-8 py-2 text-slate-900 dark:text-white text-xs font-mono focus:outline-none focus:ring-1 focus:ring-indigo-500 shadow-2xs" oninput="onEditTaskTimeOrDurationChange('end')">
+                    <input type="text" id="editTaskEndTime" placeholder="Bijv. 10:00" class="w-full bg-slate-50/70 dark:bg-[#0c0f17]/60 border border-slate-300 dark:border-slate-800 rounded-xl pl-3 pr-8 py-2 text-slate-900 dark:text-white text-xs font-mono focus:outline-none focus:ring-1 focus:ring-indigo-500 shadow-2xs" oninput="onEditTaskTimeOrDurationChange('end')">
                     <i data-lucide="clock-arrow-down" class="w-4 h-4 text-slate-400 absolute right-2.5 top-2.5 pointer-events-none"></i>
                 </div>
             </div>
@@ -3961,6 +4004,16 @@ function openEditTaskModal(task) {
     document.getElementById('editTaskStartTime').value = task.start || '';
     document.getElementById('editTaskEndTime').value = task.end || '';
 
+    // Datum
+    const dateInput = document.getElementById('editTaskDate');
+    if (dateInput) {
+        dateInput.value = task.date || (typeof activePlannerDate !== 'undefined' ? activePlannerDate : new Date().toISOString().slice(0, 10));
+    }
+
+    // Reset statusbericht van open blok
+    const notice = document.getElementById('editTaskOpenBlockNotice');
+    if (notice) notice.classList.add('hidden');
+
     const dur = task.duration || 30;
     setSelectedEditTaskDuration(dur);
 
@@ -3990,6 +4043,76 @@ function closeEditTaskModal() {
     }
 }
 
+function clearEditTaskTimes() {
+    const s = document.getElementById('editTaskStartTime');
+    const e = document.getElementById('editTaskEndTime');
+    if (s) s.value = '';
+    if (e) e.value = '';
+    const notice = document.getElementById('editTaskOpenBlockNotice');
+    if (notice) notice.classList.add('hidden');
+}
+
+async function planInNextOpenBlock() {
+    const duration = getSelectedEditTaskDurationMinutes();
+    const taskId = parseInt(document.getElementById('editTaskId')?.value, 10) || 0;
+    const btn = document.getElementById('btnPlanOpenBlock');
+    const notice = document.getElementById('editTaskOpenBlockNotice');
+    const noticeText = document.getElementById('editTaskOpenBlockNoticeText');
+
+    let origBtnHtml = '';
+    if (btn) {
+        origBtnHtml = btn.innerHTML;
+        btn.innerHTML = '<i data-lucide="loader-2" class="w-3.5 h-3.5 animate-spin text-white"></i><span>Zoeken...</span>';
+        btn.disabled = true;
+    }
+
+    try {
+        const res = await fetch('/api/planner.php?action=find_next_free_slot', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({
+                duration_minutes: duration,
+                task_id: taskId
+            })
+        });
+        const data = await res.json();
+
+        if (data.success && data.slot) {
+            const slot = data.slot;
+
+            // Stel datum en tijden in
+            const dateInput = document.getElementById('editTaskDate');
+            if (dateInput) {
+                dateInput.value = slot.date;
+            }
+            const startInput = document.getElementById('editTaskStartTime');
+            if (startInput) {
+                startInput.value = slot.start;
+            }
+            const endInput = document.getElementById('editTaskEndTime');
+            if (endInput) {
+                endInput.value = slot.end;
+            }
+
+            // Toon statusmelding in dialoog
+            if (notice && noticeText) {
+                noticeText.textContent = `Open blok gevonden: ${slot.formatted_date} van ${slot.start} tot ${slot.end} (${slot.duration_minutes}m)`;
+                notice.classList.remove('hidden');
+            }
+        } else {
+            alert(data.error || 'Geen vrij blok gevonden binnen de gezette werktijden.');
+        }
+    } catch (err) {
+        alert('Netwerkfout bij zoeken naar een open blok.');
+    } finally {
+        if (btn) {
+            btn.innerHTML = origBtnHtml;
+            btn.disabled = false;
+        }
+        if (typeof lucide !== 'undefined') lucide.createIcons();
+    }
+}
+
 function onEditTaskTimeOrDurationChange(source) {
     const startInput = document.getElementById('editTaskStartTime');
     const endInput = document.getElementById('editTaskEndTime');
@@ -4093,6 +4216,8 @@ async function submitEditTask() {
     const taskId = parseInt(document.getElementById('editTaskId').value, 10);
     const title = document.getElementById('editTaskTitle').value.trim();
     const priority = document.getElementById('editTaskPriority').value;
+    const dateInput = document.getElementById('editTaskDate');
+    const taskDate = (dateInput && dateInput.value) ? dateInput.value.trim() : (typeof activePlannerDate !== 'undefined' ? activePlannerDate : new Date().toISOString().slice(0, 10));
     const startTime = document.getElementById('editTaskStartTime').value.trim();
     const endTime = document.getElementById('editTaskEndTime').value.trim();
     const duration = getSelectedEditTaskDurationMinutes();
@@ -4118,13 +4243,20 @@ async function submitEditTask() {
                 priority: priority,
                 time_block_start: startTime,
                 time_block_end: endTime,
-                duration_minutes: duration
+                duration_minutes: duration,
+                date: taskDate
             })
         });
         const data = await res.json();
         if (data.success) {
             closeEditTaskModal();
-            switchPlannerDate(activePlannerDate, null, false);
+            const targetDate = data.date || taskDate;
+            if (typeof switchPlannerDate === 'function') {
+                switchPlannerDate(targetDate, null, false);
+            }
+            if (typeof showWidgetToast === 'function') {
+                showWidgetToast(`Taak <strong>${escapeHtml(title)}</strong> succesvol bijgewerkt`, 'success');
+            }
         } else {
             alert(data.error || 'Kon taak niet bijwerken');
             if (saveBtn) {