/**
 * Data Table Component with Selection & Inline Editing
 * For dashboard-like interfaces
 */

const { useState, useEffect, useMemo } = window.PreactLib || {};

export function DashboardTable({ 
    data = [],
    columns = [],
    onSelectionChange,
    onRowUpdate,
    onRowDelete,
    actions = [],
    className = ''
}) {
    const html = window.html;
    const [selectedIds, setSelectedIds] = useState(new Set());
    const [editingId, setEditingId] = useState(null);
    const [editValue, setEditValue] = useState('');

    const allSelected = data.length > 0 && selectedIds.size === data.length;
    const someSelected = selectedIds.size > 0 && selectedIds.size < data.length;

    const toggleSelectAll = () => {
        if (allSelected) {
            setSelectedIds(new Set());
        } else {
            setSelectedIds(new Set(data.map(row => row.id)));
        }
    };

    const toggleSelect = (id) => {
        const newSelected = new Set(selectedIds);
        if (newSelected.has(id)) {
            newSelected.delete(id);
        } else {
            newSelected.add(id);
        }
        setSelectedIds(newSelected);
    };

    const startEditing = (row, columnKey) => {
        setEditingId(row.id);
        setEditValue(row[columnKey]);
    };

    const saveEdit = (columnKey) => {
        if (onRowUpdate) {
            onRowUpdate(editingId, { [columnKey]: editValue });
        }
        setEditingId(null);
    };

    const cancelEdit = () => {
        setEditingId(null);
        setEditValue('');
    };

    useEffect(() => {
        if (onSelectionChange) {
            onSelectionChange(Array.from(selectedIds));
        }
    }, [selectedIds]);

    return html`
        <div class="table-responsive ${className}">
            <table class="table table-hover table-striped">
                <thead>
                    <tr>
                        <th style="width: 3%;">
                            <input 
                                type="checkbox" 
                                class="form-check-input"
                                checked=${allSelected}
                                indeterminate=${someSelected}
                                onChange=${toggleSelectAll}
                            />
                        </th>
                        ${columns.map(col => html`
                            <th scope="col" style="${col.style || ''}">${col.header}</th>
                        `)}
                        ${actions.length > 0 ? html`<th scope="col">Actions</th>` : ''}
                    </tr>
                </thead>
                <tbody>
                    ${data.length === 0 ? html`
                        <tr>
                            <td colSpan=${columns.length + 2} class="text-center py-4 text-muted">
                                No data available
                            </td>
                        </tr>
                    ` : data.map(row => html`
                        <tr key=${row.id} class="${selectedIds.has(row.id) ? 'table-active' : ''}">
                            <td>
                                <input 
                                    type="checkbox" 
                                    class="form-check-input"
                                    checked=${selectedIds.has(row.id)}
                                    onChange=${() => toggleSelect(row.id)}
                                />
                            </td>
                            ${columns.map(col => html`
                                <td>
                                    ${editingId === row.id && col.editable ? html`
                                        <div class="input-group input-group-sm">
                                            <input 
                                                type="text" 
                                                class="form-control" 
                                                value=${editValue}
                                                onInput=${(e) => setEditValue(e.target.value)}
                                                onBlur=${() => saveEdit(col.key)}
                                                onKeyDown=${(e) => {
                                                    if (e.key === 'Enter') saveEdit(col.key);
                                                    if (e.key === 'Escape') cancelEdit();
                                                }}
                                                autofocus
                                            />
                                        </div>
                                    ` : html`
                                        <div 
                                            style="${col.editable ? 'cursor: pointer;' : ''}"
                                            onClick=${() => col.editable && startEditing(row, col.key)}
                                        >
                                            ${col.render ? col.render(row[col.key], row) : row[col.key]}
                                            ${col.editable ? html`<i class="fas fa-pencil-alt ms-2 text-muted" style="font-size: 0.8rem;"></i>` : ''}
                                        </div>
                                    `}
                                </td>
                            `)}
                            ${actions.length > 0 ? html`
                                <td>
                                    <div class="btn-group btn-group-sm">
                                        ${actions.map(action => {
                                            // Skip hidden actions
                                            if (action.hidden && action.hidden(row)) {
                                                return null;
                                            }
                                            return html`
                                                <button
                                                    class="btn ${action.variant || 'btn-outline-primary'}"
                                                    title=${action.title || action.label}
                                                    onClick=${(e) => {
                                                        e.stopPropagation();
                                                        action.onClick(row);
                                                    }}
                                                >
                                                    ${action.icon ? html`<i class="${action.icon}"></i>` : action.label}
                                                </button>
                                            `;
                                        })}
                                    </div>
                                </td>
                            ` : ''}
                        </tr>
                    `)}
                </tbody>
            </table>
        </div>
    `;
}

// === Filter Tabs Component ===
export function FilterTabs({ 
    filters = [],
    activeFilter = 'all',
    onChange,
    className = ''
}) {
    const html = window.html;

    return html`
        <ul class="nav nav-pills mb-3 ${className}">
            ${filters.map(filter => html`
                <li class="nav-item">
                    <button
                        class="nav-link ${activeFilter === filter.value ? 'active' : ''}"
                        onClick=${() => onChange(filter.value)}
                    >
                        ${filter.icon ? html`<i class="${filter.icon} me-1"></i>` : ''}
                        ${filter.label}
                    </button>
                </li>
            `)}
        </ul>
    `;
}

// === Bulk Actions Bar ===
export function BulkActionsBar({ 
    selectedCount = 0,
    actions = [],
    onClearSelection,
    className = ''
}) {
    const html = window.html;

    if (selectedCount === 0) return null;

    return html`
        <div class="alert alert-info d-flex align-items-center justify-content-between ${className}">
            <span>
                <i class="bi bi-check-circle-fill me-2"></i>
                <strong>${selectedCount}</strong> item${selectedCount > 1 ? 's' : ''} selected
            </span>
            <div class="btn-group">
                ${actions.map(action => html`
                    <button 
                        class="btn ${action.variant || 'btn-outline-primary'}"
                        onClick=${action.onClick}
                    >
                        ${action.icon ? html`<i class="${action.icon} me-1"></i>` : ''}
                        ${action.label}
                    </button>
                `)}
                <button 
                    class="btn btn-outline-secondary"
                    onClick=${onClearSelection}
                >
                    <i class="bi bi-x-lg me-1"></i>Clear
                </button>
            </div>
        </div>
    `;
}

export default DashboardTable;