Добавил возможность решения конкфликтов при создании правил

frontend/admin/css/components.css

@@ -642,6 +642,185 @@
     grid-template-columns: repeat(8, minmax(125px, 1fr)) auto;
 }
 
+.schedule-conflict-modal {
+    z-index: 1200;
+}
+
+.schedule-conflict-card {
+    width: min(1440px, calc(100vw - 2rem));
+    padding: 1.5rem;
+}
+
+.schedule-conflict-head {
+    display: grid;
+    gap: 0.45rem;
+    margin-right: 2rem;
+    margin-bottom: 1rem;
+}
+
+.schedule-conflict-head h2 {
+    margin: 0;
+    color: var(--text-primary);
+    font-size: 1.05rem;
+    letter-spacing: 0;
+    text-transform: none;
+}
+
+.schedule-conflict-head p {
+    margin: 0;
+    color: var(--text-secondary);
+    line-height: 1.45;
+}
+
+.schedule-conflict-kicker {
+    width: max-content;
+    padding: 0.2rem 0.55rem;
+    border: 1px solid rgba(245, 158, 11, 0.3);
+    border-radius: 999px;
+    background: rgba(245, 158, 11, 0.12);
+    color: var(--warning);
+    font-size: 0.72rem;
+    font-weight: 800;
+    text-transform: uppercase;
+    letter-spacing: 0.04em;
+}
+
+.schedule-conflict-rules {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 0.75rem;
+    margin-bottom: 1rem;
+}
+
+.schedule-conflict-rule-box {
+    display: grid;
+    gap: 0.35rem;
+    min-width: 0;
+    padding: 0.85rem;
+    border: 1px solid var(--bg-card-border);
+    border-radius: var(--radius-sm);
+    background: var(--bg-input);
+}
+
+.schedule-conflict-rule-box-active {
+    border-color: rgba(245, 158, 11, 0.35);
+    background: rgba(245, 158, 11, 0.08);
+}
+
+.schedule-conflict-rule-box span,
+.schedule-conflict-slot-fixed span {
+    color: var(--text-secondary);
+    font-size: 0.72rem;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.04em;
+}
+
+.schedule-conflict-rule-box strong,
+.schedule-conflict-slot-fixed strong {
+    min-width: 0;
+    color: var(--text-primary);
+    overflow-wrap: anywhere;
+}
+
+.schedule-conflict-rule-box small,
+.schedule-conflict-slot-fixed small {
+    color: var(--text-secondary);
+    line-height: 1.4;
+}
+
+.schedule-conflict-form {
+    display: grid;
+    gap: 0.75rem;
+}
+
+.schedule-conflict-slots {
+    display: grid;
+    gap: 0.75rem;
+    max-height: none;
+    overflow: visible;
+    padding-right: 0.25rem;
+}
+
+.schedule-conflict-slot-row {
+    display: grid;
+    grid-template-columns: minmax(210px, 1.15fr) minmax(130px, 0.7fr) minmax(140px, 0.75fr) minmax(170px, 0.85fr) minmax(240px, 1.15fr) minmax(190px, 1fr);
+    gap: 0.65rem;
+    align-items: end;
+    padding: 0.75rem;
+    border: 1px solid var(--bg-card-border);
+    border-radius: var(--radius-sm);
+    background: color-mix(in srgb, var(--bg-input) 88%, transparent);
+}
+
+.schedule-conflict-slot-fixed {
+    display: grid;
+    gap: 0.25rem;
+    align-self: stretch;
+    align-content: center;
+    min-width: 0;
+}
+
+.schedule-conflict-actions {
+    display: flex;
+    justify-content: flex-end;
+    gap: 0.5rem;
+    padding-top: 0.25rem;
+}
+
+.schedule-visual-context-menu {
+    position: fixed;
+    z-index: 1300;
+    display: grid;
+    min-width: 220px;
+    padding: 0.35rem;
+    border: 1px solid var(--bg-card-border);
+    border-radius: var(--radius-sm);
+    background: rgba(10, 10, 15, 0.97);
+    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
+}
+
+.schedule-visual-context-menu[hidden] {
+    display: none;
+}
+
+[data-theme="light"] .schedule-visual-context-menu {
+    background: rgba(255, 255, 255, 0.98);
+    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.16);
+}
+
+.schedule-visual-context-menu button {
+    width: 100%;
+    padding: 0.65rem 0.75rem;
+    border: 0;
+    border-radius: 6px;
+    background: transparent;
+    color: var(--text-primary);
+    font: inherit;
+    font-size: 0.88rem;
+    text-align: left;
+    cursor: pointer;
+}
+
+.schedule-visual-context-menu button:hover,
+.schedule-visual-context-menu button:focus-visible {
+    outline: none;
+    background: var(--bg-hover);
+}
+
+.schedule-visual-context-menu button.danger {
+    color: var(--error);
+}
+
+.schedule-move-slot-card {
+    width: min(620px, calc(100vw - 2rem));
+}
+
+.schedule-move-slot-form {
+    display: grid;
+    gap: 0.9rem;
+}
+
 .subject-import-rows-list {
     display: flex;
     flex-direction: column;
@@ -861,6 +1040,23 @@
     .subject-import-row .btn {
         width: 100%;
     }
+
+    .schedule-conflict-card {
+        padding: 1.25rem;
+    }
+
+    .schedule-conflict-rules,
+    .schedule-conflict-slot-row {
+        grid-template-columns: 1fr;
+    }
+
+    .schedule-conflict-actions {
+        flex-direction: column-reverse;
+    }
+
+    .schedule-conflict-actions .btn {
+        width: 100%;
+    }
 }
 
 .academic-year-semester-meta {

frontend/admin/js/api.js

@@ -63,7 +63,10 @@ export async function apiFetch(endpoint, method = 'GET', body = null, retryOnUna
     }
 
     if (!response.ok) {
-        throw new Error(data?.message || `Ошибка HTTP: ${response.status}`);
+        const error = new Error(data?.message || `Ошибка HTTP: ${response.status}`);
+        error.status = response.status;
+        error.data = data;
+        throw error;
     }
 
     return data;

frontend/admin/js/views/schedule.js

@@ -87,6 +87,27 @@ export async function initSchedule() {
     const visualGroupFilter = document.getElementById('schedule-visual-group-filter');
     const visualUseFormButton = document.getElementById('schedule-visual-use-form');
     const visualSelectAllButton = document.getElementById('schedule-visual-select-all');
+    const conflictModal = document.getElementById('schedule-conflict-modal');
+    const conflictForm = document.getElementById('schedule-conflict-form');
+    const conflictCloseButton = document.getElementById('schedule-conflict-close');
+    const conflictCancelButton = document.getElementById('schedule-conflict-cancel');
+    const conflictSubmitButton = document.getElementById('schedule-conflict-submit');
+    const conflictSlotsContainer = document.getElementById('schedule-conflict-slots');
+    const conflictSummary = document.getElementById('schedule-conflict-summary');
+    const conflictNewRuleTitle = document.getElementById('schedule-conflict-new-rule');
+    const conflictNewRuleMeta = document.getElementById('schedule-conflict-new-rule-meta');
+    const conflictExistingRuleTitle = document.getElementById('schedule-conflict-existing-rule');
+    const conflictExistingRuleMeta = document.getElementById('schedule-conflict-existing-rule-meta');
+    const visualContextMenu = document.getElementById('schedule-visual-context-menu');
+    const moveSlotModal = document.getElementById('schedule-move-slot-modal');
+    const moveSlotForm = document.getElementById('schedule-move-slot-form');
+    const moveSlotCloseButton = document.getElementById('schedule-move-slot-close');
+    const moveSlotCancelButton = document.getElementById('schedule-move-slot-cancel');
+    const moveSlotSubmitButton = document.getElementById('schedule-move-slot-submit');
+    const moveSlotTitle = document.getElementById('schedule-move-slot-title');
+    const moveSlotSummary = document.getElementById('schedule-move-slot-summary');
+    const moveSlotDaySelect = document.getElementById('schedule-move-slot-day');
+    const moveSlotTimeSelect = document.getElementById('schedule-move-slot-time');
 
     let rules = [];
     let subjects = [];
@@ -104,6 +125,9 @@ export async function initSchedule() {
     let visualGroupFilterTouched = false;
     let visualPeriodTouched = false;
     let syncingVisualPeriod = false;
+    let pendingConflictResolution = null;
+    let visualContextTarget = null;
+    let pendingSlotMove = null;
 
     bindEvents();
 
@@ -127,6 +151,19 @@ export async function initSchedule() {
         visualSemesterSelect?.addEventListener('change', handleVisualSemesterChange);
         visualGroupFilter?.addEventListener('change', handleVisualGroupFilterChange);
         visualStage?.addEventListener('click', handleVisualStageClick);
+        conflictCloseButton?.addEventListener('click', closeConflictModal);
+        conflictCancelButton?.addEventListener('click', closeConflictModal);
+        conflictModal?.addEventListener('click', (event) => {
+            if (event.target === conflictModal) closeConflictModal();
+        });
+        conflictForm?.addEventListener('submit', resolveScheduleRuleConflict);
+        visualContextMenu?.addEventListener('click', handleVisualContextMenuClick);
+        moveSlotCloseButton?.addEventListener('click', closeMoveSlotModal);
+        moveSlotCancelButton?.addEventListener('click', closeMoveSlotModal);
+        moveSlotModal?.addEventListener('click', (event) => {
+            if (event.target === moveSlotModal) closeMoveSlotModal();
+        });
+        moveSlotForm?.addEventListener('submit', saveVisualSlotMove);
         visualUseFormButton?.addEventListener('click', () => {
             const formSemesterId = ruleSemesterSelect.value;
             if (formSemesterId) {
@@ -148,7 +185,25 @@ export async function initSchedule() {
             renderVisualSchedule();
         });
         document.addEventListener('keydown', (event) => {
-            if (event.key === 'Escape') closeVisualDrawer();
+            if (event.key !== 'Escape') return;
+            if (moveSlotModal?.classList.contains('open')) {
+                closeMoveSlotModal();
+                return;
+            }
+            if (conflictModal?.classList.contains('open')) {
+                closeConflictModal();
+                return;
+            }
+            if (visualContextMenu && !visualContextMenu.hidden) {
+                closeVisualContextMenu();
+                return;
+            }
+            closeVisualDrawer();
+        });
+        document.addEventListener('click', (event) => {
+            if (visualContextMenu?.hidden) return;
+            if (event.target.closest('#schedule-visual-context-menu') || event.target.closest('.schedule-visual-edit-rule')) return;
+            closeVisualContextMenu();
         });
 
         ruleSlotsContainer.addEventListener('click', (event) => {
@@ -401,6 +456,10 @@ export async function initSchedule() {
                     const lesson = {
                         id: `${rule.id}:${slotKey}:${groupId}`,
                         ruleId: rule.id,
+                        slotId: slot.id || '',
+                        slotIndex: index,
+                        dayOfWeek: slot.dayOfWeek,
+                        timeSlotId: slot.timeSlotId,
                         parity: slot.parity || 'BOTH',
                         subjectName: rule.subjectName || 'Без дисциплины',
                         teacherName: slot.teacherName || '',
@@ -498,8 +557,10 @@ export async function initSchedule() {
                 <button type="button"
                         class="schedule-visual-edit-rule"
                         data-rule-id="${escapeHtml(String(lesson.ruleId))}"
-                        title="Изменить правило"
-                        aria-label="${escapeHtml(`Изменить правило: ${lesson.subjectName}`)}">&#8942;</button>
+                        data-slot-id="${escapeHtml(String(lesson.slotId || ''))}"
+                        data-slot-index="${escapeHtml(String(lesson.slotIndex ?? ''))}"
+                        title="Действия со слотом"
+                        aria-label="${escapeHtml(`Действия со слотом: ${lesson.subjectName}`)}">&#8942;</button>
             </article>
         `;
     }
@@ -580,14 +641,197 @@ export async function initSchedule() {
     function handleVisualStageClick(event) {
         const editButton = event.target.closest('.schedule-visual-edit-rule');
         if (!editButton) return;
-        const rule = rules.find(item => String(item.id) === String(editButton.dataset.ruleId));
+        event.stopPropagation();
+        openVisualContextMenu(editButton);
+    }
+
+    function openVisualContextMenu(button) {
+        const rule = rules.find(item => String(item.id) === String(button.dataset.ruleId));
         if (!rule) {
             showAlert('schedule-rule-alert', 'Правило не найдено. Обновите список правил.', 'error');
             return;
         }
-        fillRuleForm(rule);
-        closeVisualDrawer();
-        showAlert('schedule-rule-alert', 'Правило открыто для редактирования', 'success');
+        visualContextTarget = {
+            ruleId: button.dataset.ruleId,
+            slotId: button.dataset.slotId || '',
+            slotIndex: button.dataset.slotIndex || ''
+        };
+        if (!visualContextMenu) return;
+        const rect = button.getBoundingClientRect();
+        visualContextMenu.hidden = false;
+        const menuRect = visualContextMenu.getBoundingClientRect();
+        const top = Math.min(rect.bottom + 6, window.innerHeight - menuRect.height - 12);
+        const left = Math.min(rect.left, window.innerWidth - menuRect.width - 12);
+        visualContextMenu.style.top = `${Math.max(12, top)}px`;
+        visualContextMenu.style.left = `${Math.max(12, left)}px`;
+        visualContextMenu.querySelector('button')?.focus();
+    }
+
+    function closeVisualContextMenu() {
+        visualContextTarget = null;
+        if (!visualContextMenu) return;
+        visualContextMenu.hidden = true;
+        visualContextMenu.style.top = '';
+        visualContextMenu.style.left = '';
+    }
+
+    async function handleVisualContextMenuClick(event) {
+        const actionButton = event.target.closest('button[data-action]');
+        if (!actionButton || !visualContextTarget) return;
+        const action = actionButton.dataset.action;
+        const target = { ...visualContextTarget };
+        const rule = rules.find(item => String(item.id) === String(target.ruleId));
+        if (!rule) {
+            closeVisualContextMenu();
+            showAlert('schedule-rule-alert', 'Правило не найдено. Обновите список правил.', 'error');
+            return;
+        }
+
+        if (action === 'edit-rule') {
+            closeVisualContextMenu();
+            fillRuleForm(rule);
+            closeVisualDrawer();
+            showAlert('schedule-rule-alert', 'Правило открыто для редактирования', 'success');
+            return;
+        }
+
+        if (action === 'move-slot') {
+            openMoveSlotModal(target);
+            return;
+        }
+
+        if (action === 'delete-rule') {
+            await deleteRuleFromVisual(rule);
+        }
+    }
+
+    async function deleteRuleFromVisual(rule) {
+        closeVisualContextMenu();
+        if (!confirm(`Удалить правило "${rule.subjectName || 'расписания'}"?`)) return;
+        try {
+            await api.delete('/api/admin/schedule-rules/' + rule.id);
+            showAlert('schedule-rule-alert', 'Правило расписания удалено', 'success');
+            await loadRules();
+        } catch (error) {
+            showAlert('schedule-rule-alert', error.message || 'Ошибка удаления правила', 'error');
+        }
+    }
+
+    function openMoveSlotModal(target) {
+        const rule = rules.find(item => String(item.id) === String(target.ruleId));
+        const slotIndex = findRuleSlotIndex(rule, target);
+        const slot = slotIndex >= 0 ? rule.slots[slotIndex] : null;
+        if (!rule || !slot) {
+            closeVisualContextMenu();
+            showAlert('schedule-rule-alert', 'Слот правила не найден. Обновите список правил.', 'error');
+            return;
+        }
+
+        pendingSlotMove = {
+            ruleId: String(rule.id),
+            slotIndex
+        };
+        if (moveSlotTitle) {
+            moveSlotTitle.textContent = rule.subjectName || 'Изменить день и пару';
+        }
+        if (moveSlotSummary) {
+            moveSlotSummary.textContent = `Текущий слот: ${conflictSlotCurrentText(slot) || 'не указан'}`;
+        }
+        if (moveSlotDaySelect) {
+            moveSlotDaySelect.innerHTML = options(DAY_OPTIONS, slot.dayOfWeek);
+        }
+        if (moveSlotTimeSelect) {
+            moveSlotTimeSelect.innerHTML = options(timeSlots.map(toTimeSlotOption), slot.timeSlotId);
+        }
+        hideAlert('schedule-move-slot-alert');
+        closeVisualContextMenu();
+        moveSlotModal?.classList.add('open');
+        moveSlotModal?.setAttribute('aria-hidden', 'false');
+        moveSlotDaySelect?.focus();
+    }
+
+    function closeMoveSlotModal() {
+        pendingSlotMove = null;
+        moveSlotModal?.classList.remove('open');
+        moveSlotModal?.setAttribute('aria-hidden', 'true');
+        hideAlert('schedule-move-slot-alert');
+    }
+
+    async function saveVisualSlotMove(event) {
+        event.preventDefault();
+        if (!pendingSlotMove) return;
+        hideAlert('schedule-move-slot-alert');
+        const rule = rules.find(item => String(item.id) === pendingSlotMove.ruleId);
+        const slot = rule?.slots?.[pendingSlotMove.slotIndex];
+        if (!rule || !slot) {
+            showAlert('schedule-move-slot-alert', 'Слот правила не найден. Обновите список правил.', 'error');
+            return;
+        }
+        const dayOfWeek = Number(moveSlotDaySelect?.value);
+        const timeSlotId = Number(moveSlotTimeSelect?.value);
+        if (!dayOfWeek || !timeSlotId) {
+            showAlert('schedule-move-slot-alert', 'Выберите день и пару', 'error');
+            return;
+        }
+
+        const previousButtonText = moveSlotSubmitButton?.textContent || '';
+        if (moveSlotSubmitButton) {
+            moveSlotSubmitButton.disabled = true;
+            moveSlotSubmitButton.textContent = 'Сохраняем...';
+        }
+        try {
+            const slots = (rule.slots || []).map(ruleSlotToPayload);
+            slots[pendingSlotMove.slotIndex] = {
+                ...slots[pendingSlotMove.slotIndex],
+                dayOfWeek,
+                timeSlotId
+            };
+            const payload = buildRulePayloadFromRule(rule, slots);
+            const saved = await api.put('/api/admin/schedule-rules/' + rule.id, payload);
+            closeMoveSlotModal();
+            showAlert('schedule-rule-alert', `Слот правила "${saved.subjectName || 'расписания'}" перенесён`, 'success');
+            await loadRules();
+        } catch (error) {
+            if (isScheduleRuleConflictError(error)) {
+                showAlert(
+                    'schedule-move-slot-alert',
+                    `Новое место занято правилом "${ruleTitle(error.data.conflictRule)}". Выберите другой день или пару.`,
+                    'error'
+                );
+                return;
+            }
+            showAlert('schedule-move-slot-alert', error.message || 'Ошибка переноса слота', 'error');
+        } finally {
+            if (moveSlotSubmitButton) {
+                moveSlotSubmitButton.disabled = false;
+                moveSlotSubmitButton.textContent = previousButtonText || 'Сохранить перенос';
+            }
+        }
+    }
+
+    function findRuleSlotIndex(rule, target) {
+        if (!rule?.slots?.length) return -1;
+        if (target.slotId) {
+            const byId = rule.slots.findIndex(slot => String(slot.id) === String(target.slotId));
+            if (byId >= 0) return byId;
+        }
+        const index = Number(target.slotIndex);
+        return Number.isInteger(index) && index >= 0 && index < rule.slots.length ? index : -1;
+    }
+
+    function ruleSlotToPayload(slot) {
+        return {
+            id: slot.id || null,
+            dayOfWeek: Number(slot.dayOfWeek),
+            parity: slot.parity || 'BOTH',
+            timeSlotId: Number(slot.timeSlotId),
+            subgroupId: slot.subgroupId || null,
+            subgroupIds: slotSubgroupIds(slot),
+            teacherId: Number(slot.teacherId),
+            classroomId: Number(slot.classroomId),
+            lessonTypeId: Number(slot.lessonTypeId),
+            lessonFormat: slot.lessonFormat || 'Очно'
+        };
     }
 
     function syncVisualGroupFilter(allGroups) {
@@ -770,20 +1014,267 @@ export async function initSchedule() {
     async function saveRule(event) {
         event.preventDefault();
         hideAlert('schedule-rule-alert');
+        let payload = null;
+        let id = '';
         try {
-            const payload = buildRulePayload();
-            const id = ruleIdInput.value;
-            const saved = id
-                ? await api.put('/api/admin/schedule-rules/' + id, payload)
-                : await api.post('/api/admin/schedule-rules', payload);
-            showAlert('schedule-rule-alert', `Правило "${saved.subjectName || 'расписания'}" сохранено`, 'success');
-            resetRuleForm();
-            await loadRules();
+            payload = buildRulePayload();
+            id = ruleIdInput.value;
+            const saved = await saveRulePayload(id, payload);
+            await finishSuccessfulRuleSave(saved);
         } catch (error) {
+            if (payload && isScheduleRuleConflictError(error)) {
+                openConflictModal(error, payload, id);
+                return;
+            }
             showAlert('schedule-rule-alert', error.message || 'Ошибка сохранения правила', 'error');
         }
     }
 
+    async function saveRulePayload(id, payload) {
+        return id
+            ? api.put('/api/admin/schedule-rules/' + id, payload)
+            : api.post('/api/admin/schedule-rules', payload);
+    }
+
+    async function finishSuccessfulRuleSave(saved) {
+        resetRuleForm();
+        showAlert('schedule-rule-alert', `Правило "${saved.subjectName || 'расписания'}" сохранено`, 'success');
+        await loadRules();
+    }
+
+    function openConflictModal(error, pendingPayload, pendingRuleId) {
+        const conflictRule = error.data.conflictRule;
+        pendingConflictResolution = {
+            conflictRule: clonePlain(conflictRule),
+            pendingPayload: clonePlain(pendingPayload),
+            pendingRuleId: pendingRuleId || ''
+        };
+        if (conflictSummary) {
+            conflictSummary.textContent = error.message || 'Ранее созданное правило занимает выбранный слот.';
+        }
+        if (conflictNewRuleTitle) {
+            conflictNewRuleTitle.textContent = ruleDraftTitle(pendingPayload);
+        }
+        if (conflictNewRuleMeta) {
+            conflictNewRuleMeta.textContent = ruleDraftMeta(pendingPayload);
+        }
+        if (conflictExistingRuleTitle) {
+            conflictExistingRuleTitle.textContent = ruleTitle(conflictRule);
+        }
+        if (conflictExistingRuleMeta) {
+            conflictExistingRuleMeta.textContent = ruleMeta(conflictRule);
+        }
+        renderConflictSlots(conflictRule);
+        hideAlert('schedule-conflict-alert');
+        conflictModal?.classList.add('open');
+        conflictModal?.setAttribute('aria-hidden', 'false');
+    }
+
+    function closeConflictModal() {
+        pendingConflictResolution = null;
+        conflictModal?.classList.remove('open');
+        conflictModal?.setAttribute('aria-hidden', 'true');
+        if (conflictSlotsContainer) conflictSlotsContainer.innerHTML = '';
+        hideAlert('schedule-conflict-alert');
+    }
+
+    async function resolveScheduleRuleConflict(event) {
+        event.preventDefault();
+        if (!pendingConflictResolution) return;
+        hideAlert('schedule-conflict-alert');
+        const previousButtonText = conflictSubmitButton?.textContent || '';
+        if (conflictSubmitButton) {
+            conflictSubmitButton.disabled = true;
+            conflictSubmitButton.textContent = 'Сохраняем...';
+        }
+
+        try {
+            const currentResolution = pendingConflictResolution;
+            const conflictPayload = buildRulePayloadFromRule(
+                currentResolution.conflictRule,
+                readConflictSlots(true)
+            );
+            await api.put('/api/admin/schedule-rules/' + currentResolution.conflictRule.id, conflictPayload);
+
+            try {
+                const saved = await saveRulePayload(
+                    currentResolution.pendingRuleId,
+                    currentResolution.pendingPayload
+                );
+                closeConflictModal();
+                await finishSuccessfulRuleSave(saved);
+            } catch (retryError) {
+                if (isScheduleRuleConflictError(retryError)) {
+                    await loadRules();
+                    openConflictModal(
+                        retryError,
+                        currentResolution.pendingPayload,
+                        currentResolution.pendingRuleId
+                    );
+                    showAlert(
+                        'schedule-conflict-alert',
+                        'Один конфликт устранён, но найдено ещё одно занятое место. Измените следующее правило и повторите сохранение.',
+                        'error'
+                    );
+                    return;
+                }
+                throw retryError;
+            }
+        } catch (error) {
+            if (isScheduleRuleConflictError(error)) {
+                showAlert(
+                    'schedule-conflict-alert',
+                    `Выбранное место для переносимого правила тоже занято: ${ruleTitle(error.data.conflictRule)}. Выберите другой день, пару, преподавателя или аудиторию.`,
+                    'error'
+                );
+                return;
+            }
+            showAlert('schedule-conflict-alert', error.message || 'Ошибка разрешения конфликта', 'error');
+        } finally {
+            if (conflictSubmitButton) {
+                conflictSubmitButton.disabled = false;
+                conflictSubmitButton.textContent = previousButtonText || 'Сохранить и повторить';
+            }
+        }
+    }
+
+    function renderConflictSlots(rule) {
+        const slots = rule.slots || [];
+        if (!conflictSlotsContainer) return;
+        if (!slots.length) {
+            conflictSlotsContainer.innerHTML = '<div class="loading-row">У конфликтующего правила нет слотов</div>';
+            return;
+        }
+        conflictSlotsContainer.innerHTML = slots.map((slot, index) => {
+            const fixedParts = [
+                slot.lessonTypeName,
+                slot.lessonFormat,
+                slotSubgroupNames(slot).join(', ')
+            ].filter(Boolean);
+            return `
+                <section class="schedule-conflict-slot-row" data-index="${index}">
+                    <div class="schedule-conflict-slot-fixed">
+                        <span>Слот ${index + 1}</span>
+                        <strong>${escapeHtml(fixedParts.join(' · ') || 'Занятие')}</strong>
+                        <small>${escapeHtml(conflictSlotCurrentText(slot))}</small>
+                    </div>
+                    <div class="form-group"><label>День</label><select class="conflict-slot-day" required>${options(DAY_OPTIONS, slot.dayOfWeek)}</select></div>
+                    <div class="form-group"><label>Чётность</label><select class="conflict-slot-parity" required>${options(Object.entries(PARITY_LABELS).map(([value, label]) => ({ value, label })), slot.parity || 'BOTH')}</select></div>
+                    <div class="form-group"><label>Пара</label><select class="conflict-slot-time" required>${options(timeSlots.map(toTimeSlotOption), slot.timeSlotId)}</select></div>
+                    <div class="form-group"><label>Преподаватель</label><select class="conflict-slot-teacher" required>${options(teachers.map(toTeacherOption), slot.teacherId)}</select></div>
+                    <div class="form-group"><label>Аудитория</label><select class="conflict-slot-classroom" required>${options(classrooms.map(toClassroomOption), slot.classroomId)}</select></div>
+                </section>
+            `;
+        }).join('');
+    }
+
+    function readConflictSlots(validate) {
+        const conflictRule = pendingConflictResolution?.conflictRule;
+        const rows = Array.from(conflictSlotsContainer?.querySelectorAll('.schedule-conflict-slot-row') || []);
+        return rows.map((row, index) => {
+            const original = conflictRule?.slots?.[index] || {};
+            const slot = {
+                id: original.id || null,
+                dayOfWeek: Number(row.querySelector('.conflict-slot-day').value),
+                parity: row.querySelector('.conflict-slot-parity').value,
+                timeSlotId: Number(row.querySelector('.conflict-slot-time').value),
+                subgroupId: original.subgroupId || null,
+                subgroupIds: slotSubgroupIds(original),
+                teacherId: Number(row.querySelector('.conflict-slot-teacher').value),
+                classroomId: Number(row.querySelector('.conflict-slot-classroom').value),
+                lessonTypeId: Number(original.lessonTypeId),
+                lessonFormat: original.lessonFormat || 'Очно'
+            };
+            if (validate && (!slot.dayOfWeek || !slot.parity || !slot.timeSlotId
+                || !slot.teacherId || !slot.classroomId || !slot.lessonTypeId || !slot.lessonFormat)) {
+                throw new Error(`Заполните слот ${index + 1} конфликтующего правила`);
+            }
+            return slot;
+        });
+    }
+
+    function buildRulePayloadFromRule(rule, slots) {
+        const groupIds = (rule.groupIds || []).map(Number).filter(Boolean);
+        if (!rule.id) throw new Error('Конфликтующее правило не найдено');
+        if (!rule.subjectId) throw new Error('У конфликтующего правила не указана дисциплина');
+        if (!rule.semesterId) throw new Error('У конфликтующего правила не указан семестр');
+        if (!groupIds.length) throw new Error('У конфликтующего правила нет групп');
+        if (!slots.length) throw new Error('У конфликтующего правила нет слотов');
+        return {
+            id: Number(rule.id),
+            subjectId: Number(rule.subjectId),
+            semesterId: Number(rule.semesterId),
+            lectureAcademicHours: Number(rule.lectureAcademicHours || 0),
+            laboratoryAcademicHours: Number(rule.laboratoryAcademicHours || 0),
+            practiceAcademicHours: Number(rule.practiceAcademicHours || 0),
+            lectureStartWeek: Number(rule.lectureStartWeek || 1),
+            laboratoryStartWeek: Number(rule.laboratoryStartWeek || 1),
+            practiceStartWeek: Number(rule.practiceStartWeek || 1),
+            groupIds,
+            slots
+        };
+    }
+
+    function isScheduleRuleConflictError(error) {
+        return error?.status === 409 && Boolean(error.data?.conflictRule);
+    }
+
+    function clonePlain(value) {
+        return JSON.parse(JSON.stringify(value));
+    }
+
+    function ruleDraftTitle(payload) {
+        const subject = subjects.find(item => String(item.id) === String(payload.subjectId));
+        return subject?.name || `Правило по дисциплине ${payload.subjectId}`;
+    }
+
+    function ruleTitle(rule) {
+        return rule?.subjectName || ruleDraftTitle(rule || {});
+    }
+
+    function ruleDraftMeta(payload) {
+        const groupNames = (payload.groupIds || []).map(groupNameById).join(', ') || 'группы не выбраны';
+        return [semesterTextById(payload.semesterId), groupNames, typeLoadText(payload)]
+            .filter(Boolean)
+            .join(' · ');
+    }
+
+    function ruleMeta(rule) {
+        const groupNames = (rule.groupNames || []).join(', ')
+            || (rule.groupIds || []).map(groupNameById).join(', ')
+            || 'группы не выбраны';
+        return [formatSemester(rule), groupNames, typeLoadText(rule)]
+            .filter(Boolean)
+            .join(' · ');
+    }
+
+    function typeLoadText(rule) {
+        return LESSON_TYPE_LIMITS
+            .map(config => {
+                const hours = Number(rule?.[config.hoursField] || 0);
+                const startWeek = Number(rule?.[config.startWeekField] || 1);
+                return hours > 0 ? `${config.label}: ${hours} ч, с ${startWeek} недели` : '';
+            })
+            .filter(Boolean)
+            .join('; ');
+    }
+
+    function semesterTextById(semesterId) {
+        const semester = semesterById(semesterId);
+        return semester ? shortSemesterLabel(semester) : 'семестр не выбран';
+    }
+
+    function conflictSlotCurrentText(slot) {
+        const parity = PARITY_LABELS[slot.parity] || slot.parity || '-';
+        return [
+            slot.dayName,
+            slot.timeSlotLabel,
+            parity,
+            slot.teacherName,
+            slot.classroomName
+        ].filter(Boolean).join(' · ');
+    }
+
     function buildRulePayload() {
         const groupIds = selectedRuleGroupIds();
         const slots = readRuleSlots(true);

frontend/admin/views/schedule.html

@@ -91,6 +91,71 @@
     </form>
 </div>
 
+<div class="modal-overlay schedule-conflict-modal" id="schedule-conflict-modal" role="dialog" aria-modal="true" aria-hidden="true">
+    <div class="modal-content schedule-conflict-card">
+        <button type="button" class="modal-close" id="schedule-conflict-close" aria-label="Закрыть окно">&times;</button>
+        <div class="schedule-conflict-head">
+            <span class="schedule-conflict-kicker">Конфликт слота</span>
+            <h2>Освободите место для нового правила</h2>
+            <p id="schedule-conflict-summary">Ранее созданное правило занимает выбранное время, преподавателя или аудиторию.</p>
+        </div>
+        <div class="schedule-conflict-rules">
+            <section class="schedule-conflict-rule-box">
+                <span>Новое правило</span>
+                <strong id="schedule-conflict-new-rule">-</strong>
+                <small id="schedule-conflict-new-rule-meta">-</small>
+            </section>
+            <section class="schedule-conflict-rule-box schedule-conflict-rule-box-active">
+                <span>Нужно изменить</span>
+                <strong id="schedule-conflict-existing-rule">-</strong>
+                <small id="schedule-conflict-existing-rule-meta">-</small>
+            </section>
+        </div>
+        <form id="schedule-conflict-form" class="schedule-conflict-form" novalidate>
+            <div class="schedule-conflict-slots" id="schedule-conflict-slots"></div>
+            <div class="form-alert" id="schedule-conflict-alert" role="alert"></div>
+            <div class="schedule-conflict-actions">
+                <button type="button" class="btn btn-md btn-ghost" id="schedule-conflict-cancel">Отмена</button>
+                <button type="submit" class="btn btn-md btn-primary" id="schedule-conflict-submit">Сохранить и повторить</button>
+            </div>
+        </form>
+    </div>
+</div>
+
+<div class="schedule-visual-context-menu" id="schedule-visual-context-menu" hidden>
+    <button type="button" data-action="edit-rule">Открыть правило</button>
+    <button type="button" data-action="move-slot">Изменить день и пару</button>
+    <button type="button" data-action="delete-rule" class="danger">Удалить правило</button>
+</div>
+
+<div class="modal-overlay schedule-move-slot-modal" id="schedule-move-slot-modal" role="dialog" aria-modal="true" aria-hidden="true">
+    <div class="modal-content schedule-move-slot-card">
+        <button type="button" class="modal-close" id="schedule-move-slot-close" aria-label="Закрыть окно">&times;</button>
+        <div class="schedule-conflict-head">
+            <span class="schedule-conflict-kicker">Перенос слота</span>
+            <h2 id="schedule-move-slot-title">Изменить день и пару</h2>
+            <p id="schedule-move-slot-summary">Будут изменены только день недели и базовая пара выбранного слота.</p>
+        </div>
+        <form id="schedule-move-slot-form" class="schedule-move-slot-form" novalidate>
+            <div class="form-row">
+                <div class="form-group">
+                    <label for="schedule-move-slot-day">День</label>
+                    <select id="schedule-move-slot-day" required></select>
+                </div>
+                <div class="form-group">
+                    <label for="schedule-move-slot-time">Пара</label>
+                    <select id="schedule-move-slot-time" required></select>
+                </div>
+            </div>
+            <div class="form-alert" id="schedule-move-slot-alert" role="alert"></div>
+            <div class="schedule-conflict-actions">
+                <button type="button" class="btn btn-md btn-ghost" id="schedule-move-slot-cancel">Отмена</button>
+                <button type="submit" class="btn btn-md btn-primary" id="schedule-move-slot-submit">Сохранить перенос</button>
+            </div>
+        </form>
+    </div>
+</div>
+
 <div class="card">
     <div class="card-header-row">
         <h2>Правила динамического расписания</h2>