// Main JavaScript functionality

document.addEventListener('DOMContentLoaded', function() {
    // Initialize application
    initializeApp();
});

function initializeApp() {
    // Initialize tooltips
    initializeTooltips();
    
    // Initialize popovers
    initializePopovers();
    
    // Initialize form validation
    initializeFormValidation();
    
    // Initialize CSRF token
    initializeCSRF();
    
    // Initialize event listeners
    initializeEventListeners();
}

function initializeTooltips() {
    const tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'));
    tooltipTriggerList.map(function(tooltipTriggerEl) {
        return new bootstrap.Tooltip(tooltipTriggerEl);
    });
}

function initializePopovers() {
    const popoverTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="popover"]'));
    popoverTriggerList.map(function(popoverTriggerEl) {
        return new bootstrap.Popover(popoverTriggerEl);
    });
}

function initializeFormValidation() {
    // Add Bootstrap form validation
    const forms = document.querySelectorAll('.needs-validation');
    Array.prototype.slice.call(forms).forEach(function(form) {
        form.addEventListener('submit', function(event) {
            if (!form.checkValidity()) {
                event.preventDefault();
                event.stopPropagation();
            }
            form.classList.add('was-validated');
        }, false);
    });
}

function initializeCSRF() {
    // Get CSRF token from meta tag if present
    const csrfToken = document.querySelector('meta[name="csrf-token"]');
    if (csrfToken) {
        // Set default CSRF token for all AJAX requests
        const token = csrfToken.getAttribute('content');
        
        // For jQuery if present
        if (typeof $ !== 'undefined') {
            $.ajaxSetup({
                beforeSend: function(xhr, settings) {
                    if (!/^(GET|HEAD|OPTIONS|TRACE)$/i.test(settings.type) && !this.crossDomain) {
                        xhr.setRequestHeader("X-CSRFToken", token);
                    }
                }
            });
        }
    }
}

function initializeEventListeners() {
    // Global error handling for fetch requests
    window.addEventListener('unhandledrejection', function(event) {
        console.error('Unhandled promise rejection:', event.reason);
        showNotification('An error occurred while processing your request', 'error');
    });
    
    // Auto-hide alerts after 5 seconds
    setTimeout(function() {
        const alerts = document.querySelectorAll('.alert');
        alerts.forEach(function(alert) {
            if (alert.classList.contains('alert-success') || alert.classList.contains('alert-info')) {
                const bsAlert = new bootstrap.Alert(alert);
                bsAlert.close();
            }
        });
    }, 5000);
}

// Utility functions
function showNotification(message, type = 'info', duration = 5000) {
    const alertHTML = `
        <div class="alert alert-${type} alert-dismissible fade show" role="alert">
            ${message}
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
    `;
    
    const container = document.querySelector('.container-fluid') || document.body;
    container.insertAdjacentHTML('afterbegin', alertHTML);
    
    // Get reference to the created alert
    const alert = container.querySelector('.alert');
    
    // Auto-hide after duration
    if (duration > 0) {
        setTimeout(function() {
            if (alert && alert.parentElement) {
                const bsAlert = new bootstrap.Alert(alert);
                bsAlert.close();
            }
        }, duration);
    }
    
    // Return reference to the alert element for manual control
    return alert;
}

function showLoading(element, text = 'Loading...') {
    const originalHTML = element.innerHTML;
    element.innerHTML = `
        <span class="spinner-border spinner-border-sm me-2" role="status"></span>
        ${text}
    `;
    element.disabled = true;
    
    return function() {
        element.innerHTML = originalHTML;
        element.disabled = false;
    };
}

function formatBytes(bytes, decimals = 2) {
    if (bytes === 0) return '0 Bytes';
    
    const k = 1024;
    const dm = decimals < 0 ? 0 : decimals;
    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
    
    const i = Math.floor(Math.log(bytes) / Math.log(k));
    
    return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
}

function formatDate(dateString) {
    const date = new Date(dateString);
    return date.toLocaleDateString() + ' ' + date.toLocaleTimeString();
}

function debounce(func, wait, immediate) {
    let timeout;
    return function executedFunction() {
        const context = this;
        const args = arguments;
        
        const later = function() {
            timeout = null;
            if (!immediate) func.apply(context, args);
        };
        
        const callNow = immediate && !timeout;
        clearTimeout(timeout);
        timeout = setTimeout(later, wait);
        
        if (callNow) func.apply(context, args);
    };
}

// API helper functions
async function apiRequest(url, options = {}) {
    const defaultOptions = {
        method: 'GET',
        headers: {
            'Content-Type': 'application/json',
        },
    };
    
    const config = { ...defaultOptions, ...options };
    
    try {
        const response = await fetch(url, config);
        
        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }
        
        const data = await response.json();
        return data;
    } catch (error) {
        console.error('API request failed:', error);
        throw error;
    }
}

async function apiGet(url) {
    return apiRequest(url);
}

async function apiPost(url, data) {
    return apiRequest(url, {
        method: 'POST',
        body: JSON.stringify(data),
    });
}

async function apiPut(url, data) {
    return apiRequest(url, {
        method: 'PUT',
        body: JSON.stringify(data),
    });
}

async function apiDelete(url) {
    return apiRequest(url, {
        method: 'DELETE',
    });
}

// Script execution helpers
function executeScript(scriptId, parameters = {}, projectId = null) {
    const data = {
        parameters: parameters
    };
    
    if (projectId) {
        data.project_id = projectId;
    }
    
    return apiPost(`/api/scripts/${scriptId}/execute`, data);
}

function stopScript(scriptId, processId) {
    return apiPost(`/api/scripts/${scriptId}/stop`, {
        process_id: processId
    });
}

function getScriptStatus(processId, userId) {
    return apiGet(`/api/scripts/status?process_id=${processId}&user_id=${userId}`);
}

// Project management helpers
function createProject(groupId, projectName, description = '') {
    return apiPost('/api/projects', {
        group_id: groupId,
        project_name: projectName,
        description: description
    });
}

function deleteProject(projectId) {
    return apiDelete(`/api/projects/${projectId}`);
}

function getUserProjects(groupId = null) {
    const url = groupId ? `/api/projects?group_id=${groupId}` : '/api/projects';
    return apiGet(url);
}

// Conda environment helpers
function getCondaEnvironments() {
    return apiGet('/api/conda/environments');
}

function refreshCondaEnvironments() {
    return apiPost('/api/conda/refresh');
}

// User preference helpers
function updateUserPreferences(preferences) {
    return apiPost('/api/user/preferences', preferences);
}

// Export functions for use in other scripts
window.ScriptsManager = {
    showNotification,
    showLoading,
    formatBytes,
    formatDate,
    debounce,
    apiGet,
    apiPost,
    apiPut,
    apiDelete,
    executeScript,
    stopScript,
    getScriptStatus,
    createProject,
    deleteProject,
    getUserProjects,
    getCondaEnvironments,
    refreshCondaEnvironments,
    updateUserPreferences
};