// Task Item Component
class TaskItem extends HTMLElement {
    constructor() {
        super();
        this.attachShadow({ mode: 'open' });
    }
    connectedCallback() {
        this.taskId = this.getAttribute('task-id');
        this.completed = this.getAttribute('completed') === 'true';
        this.loadTaskData();
        this.render();
        this.setupEventListeners();
    }

    static get observedAttributes() {
        return ['task-id', 'completed'];
    }

    attributeChangedCallback(name, oldValue, newValue) {
        if (name === 'task-id' && oldValue !== newValue) {
            this.taskId = newValue;
            this.loadTaskData();
        } else if (name === 'completed') {
            this.completed = newValue === 'true';
        }
        this.render();
    }

    loadTaskData() {
        if (!window.state || !window.state.tasks) return;
        
        this.task = window.state.tasks.find(t => t.id === this.taskId);
        this.tags = window.state.tags || [];
    }

    render() {
        if (!this.task) {
            this.shadowRoot.innerHTML = `<div class="loading" data-task-id="${this.taskId}">Lädt...</div>`;
            return;
        }
        const { title, estimatedTime, spentTime, tags } = this.task;
        const progress = estimatedTime > 0 ? (spentTime / estimatedTime) * 100 : 0;
        const tagElements = (tags || []).map(tagId => {
            const tag = this.tags?.find(t => t.id === tagId);
            return tag ? `<span class="tag-badge" style="background-color: ${tag.color}20; color: ${tag.color}">${tag.name}</span>` : '';
        }).join('');
this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    background: #1f2937;
                    border-radius: 8px;
                    padding: 12px;
                    margin-bottom: 8px;
                    transition: all 0.3s ease;
                    cursor: pointer;
                }
                
                :host(:hover) {
                    transform: translateY(-2px);
                    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
                }
                
                :host(.completed) {
                    opacity: 0.6;
                }
                
                .task-header {
                    display: flex;
                    align-items: center;
                    justify-content: space-between;
                    margin-bottom: 8px;
                }
                
                .task-title {
                    font-size: 16px;
                    font-weight: 500;
                    color: #f3f4f6;
                    flex: 1;
                    margin-left: 8px;
                    text-decoration: none;
                }
                
                :host(.completed) .task-title {
                    text-decoration: line-through;
                    color: #9ca3af;
                }
                
                .task-checkbox {
                    width: 20px;
                    height: 20px;
                    cursor: pointer;
                }
                
                .task-actions {
                    display: flex;
                    gap: 8px;
                }
                
                .task-action {
                    background: none;
                    border: none;
                    color: #6b7280;
                    cursor: pointer;
                    padding: 4px;
                    transition: color 0.2s ease;
                }
                
                .task-action:hover {
                    color: #f97316;
                }
                
                .task-info {
                    display: flex;
                    align-items: center;
                    gap: 16px;
                    margin-top: 8px;
                }
                
                .time-info {
                    font-size: 14px;
                    color: #9ca3af;
                }
                
                .progress-bar {
                    width: 100%;
                    height: 4px;
                    background: #374151;
                    border-radius: 2px;
                    overflow: hidden;
                    margin-top: 8px;
                }
                
                .progress-fill {
                    height: 100%;
                    background: linear-gradient(90deg, #f97316, #ea580c);
                    transition: width 0.3s ease;
                }
                
                .tags {
                    display: flex;
                    gap: 4px;
                    flex-wrap: wrap;
                }
                
                .tag-badge {
                    font-size: 12px;
                    padding: 2px 8px;
                    border-radius: 12px;
                    font-weight: 500;
                }
                
                .edit-form {
                    display: none;
                    margin-top: 12px;
                    padding-top: 12px;
                    border-top: 1px solid #374151;
                }
                
                .edit-form.active {
                    display: block;
                }
                
                .input-group {
                    display: flex;
                    gap: 8px;
                    margin-bottom: 8px;
                }
                
                .input-group input {
                    background: #374151;
                    border: 1px solid #4b5563;
                    border-radius: 4px;
                    padding: 6px 12px;
                    color: #f3f4f6;
                    font-size: 14px;
                }
                
                .input-group input:focus {
                    outline: none;
                    border-color: #f97316;
                }
                
                .edit-actions {
                    display: flex;
                    gap: 8px;
                    justify-content: flex-end;
                }
                
                .btn-small {
                    padding: 6px 12px;
                    border-radius: 4px;
                    border: none;
                    font-size: 14px;
                    cursor: pointer;
                    transition: all 0.2s ease;
                }
                
                .btn-save {
                    background: #059669;
                    color: white;
                }
                
                .btn-save:hover {
                    background: #047857;
                }
                
                .btn-cancel {
                    background: #374151;
                    color: #d1d5db;
                }
                
                .btn-cancel:hover {
                    background: #4b5563;
                }
            </style>
            <div class="task-header">
                <input type="checkbox" class="task-checkbox" ${this.completed ? 'checked' : ''} 
                       @change="${this.handleToggleComplete}">
<span class="task-title">${title}</span>
                <div class="task-actions">
                    <button class="focus-btn" @click="${this.handleFocus}" title="Pomodoro starten">
                        <i data-feather="clock"></i>
                    </button>
<button class="task-action" @click="${this.handleEdit}" title="Bearbeiten">
                        <i data-feather="edit-2"></i>
                    </button>
                    <button class="task-action" @click="${this.handleDelete}" title="Löschen">
                        <i data-feather="trash-2"></i>
                    </button>
                </div>
            </div>
            
            <div class="task-info">
                <span class="time-info">${formatTime(spentTime)} / ${formatTime(estimatedTime)}</span>
                <div class="tags">${tagElements}</div>
            </div>
            
            <div class="progress-bar">
                <div class="progress-fill" style="width: ${progress}%"></div>
            </div>
            <div class="edit-form" id="edit-form-${this.taskId}">
<div class="input-group">
                    <input type="text" value="${title}" id="edit-title-${this.taskId}" placeholder="Titel">
                    <input type="number" value="${Math.floor(estimatedTime / 60)}" id="edit-hours-${this.taskId}" 
                           placeholder="h" min="0" max="24" style="width: 60px">
                    <input type="number" value="${estimatedTime % 60}" id="edit-minutes-${this.taskId}" 
                           placeholder="m" min="0" max="59" step="15" style="width: 60px">
<button class="btn-small btn-add-time" @click="${this.handleAddTime}" title="Zeit hinzufügen">
                        <i data-feather="clock" style="width: 14px; height: 14px;"></i>
                    </button>
                </div>
                <div class="edit-actions">
                    <button class="btn-small btn-save" @click="${this.handleSave}">Speichern</button>
                    <button class="btn-small btn-cancel" @click="${this.handleCancel}">Abbrechen</button>
                </div>
            </div>
        `;
        if (this.completed) {
this.classList.add('completed');
        } else {
            this.classList.remove('completed');
        }
        
        // Replace feather icons
        this.shadowRoot.querySelectorAll('i[data-feather]').forEach(icon => {
            const iconName = icon.getAttribute('data-feather');
            icon.outerHTML = feather.icons[iconName].toSvg({ width: 16, height: 16 });
        });
    }

    setupEventListeners() {
        this.shadowRoot.addEventListener('click', (e) => {
            const action = e.target.closest('button')?.getAttribute('@click');
            if (action) {
                e.stopPropagation();
                this[action.replace('${this.', '').replace('}', '')](e);
            }
        });
        
        this.shadowRoot.addEventListener('change', (e) => {
            if (e.target.classList.contains('task-checkbox')) {
                e.stopPropagation();
                this.handleToggleComplete(e);
            }
        });
    }

    handleToggleComplete(e) {
        const completed = e.target.checked;
        this.dispatchEvent(new CustomEvent('toggle-complete', { 
            detail: { taskId: this.getAttribute('task-id'), completed },
            bubbles: true 
        }));
        
        if (completed) {
            this.classList.add('completed');
        } else {
            this.classList.remove('completed');
        }
    }
    handleFocus(e) {
        const taskId = this.getAttribute('task-id');
        const task = state.tasks.find(t => t.id === taskId);
        if (task) {
            startFocusMode(task);
        }
    }
handleEdit(e) {
        const editForm = this.shadowRoot.querySelector('.edit-form');
        editForm.classList.add('active');
    }

    handleDelete(e) {
        if (confirm('Aufgabe wirklich löschen?')) {
            this.dispatchEvent(new CustomEvent('delete-task', { 
                detail: { taskId: this.getAttribute('task-id') },
                bubbles: true 
            }));
        }
    }

    handleSave(e) {
        const taskId = this.getAttribute('task-id');
        const title = this.shadowRoot.getElementById(`edit-title-${taskId}`).value;
        const hours = parseInt(this.shadowRoot.getElementById(`edit-hours-${taskId}`).value) || 0;
        const minutes = parseInt(this.shadowRoot.getElementById(`edit-minutes-${taskId}`).value) || 0;
        const estimatedTime = hours * 60 + minutes;
        
        this.dispatchEvent(new CustomEvent('update-task', { 
            detail: { taskId, updates: { title, estimatedTime } },
            bubbles: true 
        }));
    }

    handleCancel(e) {
        const editForm = this.shadowRoot.querySelector('.edit-form');
        editForm.classList.remove('active');
    }

    handleAddTime(e) {
        const minutes = prompt('Wie viele Minuten willst du hinzufügen?', '15');
        if (minutes && !isNaN(minutes)) {
            this.dispatchEvent(new CustomEvent('add-time', { 
                detail: { 
                    taskId: this.getAttribute('task-id'), 
                    minutes: parseInt(minutes) 
                },
                bubbles: true 
            }));
        }
    }
}

customElements.define('task-item', TaskItem);