/**
 * Stream Deck Property Inspector JavaScript for Send Webhook Action
 * Simple and focused - fixes timeout and duplicate alert issues
 */

// Store timeout IDs to clear them properly
const validationTimeouts = {};

// Utility function to show validation messages with proper timeout handling
function showValidationMessage(elementId, message, isError = true, duration = 5000) {
    const element = document.getElementById(elementId);
    if (!element) return;

    // Clear existing timeout for this element
    if (validationTimeouts[elementId]) {
        clearTimeout(validationTimeouts[elementId]);
        delete validationTimeouts[elementId];
    }

    element.textContent = message;
    element.style.display = message ? 'block' : 'none';

    // Set new timeout if duration > 0
    if (duration > 0 && message) {
        validationTimeouts[elementId] = setTimeout(() => {
            element.style.display = 'none';
            delete validationTimeouts[elementId];
        }, duration);
    }
}

// Hide validation message immediately
function hideValidationMessage(elementId) {
    showValidationMessage(elementId, '', true, 0);
}

// JSON validation function
function validateJSON(jsonString, fieldName) {
    if (!jsonString || jsonString.trim() === '') {
        return { isValid: true, message: `${fieldName} is empty (optional)` };
    }

    try {
        const parsed = JSON.parse(jsonString);

        // Additional validation for headers - must be an object
        if (fieldName === 'Headers' && (typeof parsed !== 'object' || parsed === null || Array.isArray(parsed))) {
            return {
                isValid: false,
                message: 'Headers must be a JSON object (e.g., {"Content-Type": "application/json"})'
            };
        }

        return { isValid: true, message: `Valid JSON`, data: parsed };
    } catch (error) {
        return {
            isValid: false,
            message: `Invalid JSON: ${error.message}`
        };
    }
}

// JSON beautification function
function beautifyJSON(jsonString) {
    if (!jsonString || jsonString.trim() === '') {
        return { success: false, message: 'No content to beautify' };
    }

    try {
        const parsed = JSON.parse(jsonString);
        const beautified = JSON.stringify(parsed, null, 2);
        return { success: true, beautified };
    } catch (error) {
        return { success: false, message: `Cannot beautify: ${error.message}` };
    }
}

// URL validation function
function validateURL(urlString) {
    if (!urlString || urlString.trim() === '') {
        return { isValid: false, message: 'URL is required' };
    }

    try {
        const url = new URL(urlString.trim());

        // Check for supported protocols
        if (!['http:', 'https:'].includes(url.protocol)) {
            return {
                isValid: false,
                message: 'URL must use HTTP or HTTPS protocol'
            };
        }

        return { isValid: true, message: 'Valid URL' };
    } catch (error) {
        return {
            isValid: false,
            message: 'Invalid URL format'
        };
    }
}

// Get current settings from the form
function getCurrentSettings() {
    const urlField = document.querySelector('sdpi-textfield[setting="url"]');
    const methodField = document.querySelector('sdpi-select[setting="method"]');
    const headersField = document.querySelector('sdpi-textarea[setting="headers"]');
    const bodyField = document.querySelector('sdpi-textarea[setting="body"]');

    return {
        url: urlField ? urlField.value : '',
        method: methodField ? methodField.value : 'GET',
        headers: headersField ? headersField.value : '',
        body: bodyField ? bodyField.value : ''
    };
}

// Handle field validation - shows only one alert at a time
function handleFieldValidation(fieldName, displayName) {
    const field = document.querySelector(`sdpi-textarea[setting="${fieldName}"]`);
    if (!field) return;

    const validation = validateJSON(field.value, displayName);
    const errorId = `${fieldName}-error`;
    const successId = `${fieldName}-success`;

    if (validation.isValid) {
        showValidationMessage(successId, validation.message, false);
        hideValidationMessage(errorId);
    } else {
        showValidationMessage(errorId, validation.message, true);
        hideValidationMessage(successId);
    }
}

// Handle JSON beautification
function handleJsonBeautify(fieldName) {
    const field = document.querySelector(`sdpi-textarea[setting="${fieldName}"]`);
    if (!field) return;

    const result = beautifyJSON(field.value);
    const errorId = `${fieldName}-error`;
    const successId = `${fieldName}-success`;

    if (result.success) {
        field.value = result.beautified;
        // Trigger change event to save settings
        field.dispatchEvent(new Event('change', { bubbles: true }));
        showValidationMessage(successId, 'JSON beautified successfully!', false);
        hideValidationMessage(errorId);
    } else {
        showValidationMessage(errorId, result.message, true);
        hideValidationMessage(successId);
    }
}

// Comprehensive configuration verification
function verifyConfiguration() {
    const settings = getCurrentSettings();
    const errors = [];
    const warnings = [];

    // Validate URL
    const urlValidation = validateURL(settings.url);
    if (!urlValidation.isValid) {
        errors.push(`URL: ${urlValidation.message}`);
    }

    // Validate Headers JSON
    const headersValidation = validateJSON(settings.headers, 'Headers');
    if (!headersValidation.isValid) {
        errors.push(`Headers: ${headersValidation.message}`);
    }

    // Validate Body JSON (only if not empty)
    if (settings.body && settings.body.trim() !== '') {
        const bodyValidation = validateJSON(settings.body, 'Body');
        if (!bodyValidation.isValid) {
            errors.push(`Body: ${bodyValidation.message}`);
        }
    }

    // Check method-specific requirements
    const methodsWithBody = ['POST', 'PUT', 'PATCH'];
    if (methodsWithBody.includes(settings.method)) {
        if (!settings.body || settings.body.trim() === '') {
            warnings.push(`${settings.method} requests typically include a body`);
        }
    } else if (settings.method === 'GET' && settings.body && settings.body.trim() !== '') {
        warnings.push('GET requests typically do not include a body');
    }

    // Check for common header requirements
    if (settings.body && settings.body.trim() !== '') {
        try {
            const headers = settings.headers ? JSON.parse(settings.headers) : {};
            if (!headers['Content-Type'] && !headers['content-type']) {
                warnings.push('Consider adding Content-Type header when sending a body');
            }
        } catch (e) {
            // Headers validation already handled above
        }
    }

    showConfigurationResults(errors, warnings);
}

// Show configuration verification results
function showConfigurationResults(errors, warnings) {
    const statusElement = document.getElementById('config-status');
    if (!statusElement) return;

    let message = '';
    let className = '';

    if (errors.length > 0) {
        className = 'error';
        message = `Configuration Issues:\n${errors.join('\n')}`;
        if (warnings.length > 0) {
            message += `\n\nWarnings:\n${warnings.join('\n')}`;
        }
    } else if (warnings.length > 0) {
        className = 'error'; // Show warnings as yellow/orange
        message = `Configuration Warnings:\n${warnings.join('\n')}`;
    } else {
        className = 'success';
        message = '✓ Configuration is valid and ready to use!';
    }

    statusElement.className = `config-status ${className}`;
    statusElement.textContent = message;
    statusElement.style.display = 'block';

    // Hide after 10 seconds for success, keep visible for errors
    if (className === 'success') {
        setTimeout(() => {
            statusElement.style.display = 'none';
        }, 10000);
    }
}

// Event handlers setup
function setupEventHandlers() {
    // Headers validation button
    const validateHeadersBtn = document.getElementById('validate-headers-btn');
    if (validateHeadersBtn) {
        validateHeadersBtn.addEventListener('click', () => {
            handleFieldValidation('headers', 'Headers');
        });
    }

    // Headers beautify button
    const beautifyHeadersBtn = document.getElementById('beautify-headers-btn');
    if (beautifyHeadersBtn) {
        beautifyHeadersBtn.addEventListener('click', () => {
            handleJsonBeautify('headers');
        });
    }

    // Body validation button
    const validateBodyBtn = document.getElementById('validate-body-btn');
    if (validateBodyBtn) {
        validateBodyBtn.addEventListener('click', () => {
            handleFieldValidation('body', 'Body');
        });
    }

    // Body beautify button
    const beautifyBodyBtn = document.getElementById('beautify-body-btn');
    if (beautifyBodyBtn) {
        beautifyBodyBtn.addEventListener('click', () => {
            handleJsonBeautify('body');
        });
    }

    // Configuration verification button
    const verifyConfigBtn = document.getElementById('verify-config-btn');
    if (verifyConfigBtn) {
        verifyConfigBtn.addEventListener('click', verifyConfiguration);
    }

    // Auto-validate URL on change
    const urlField = document.querySelector('sdpi-textfield[setting="url"]');
    if (urlField) {
        urlField.addEventListener('change', () => {
            const validation = validateURL(urlField.value);
            if (!validation.isValid && urlField.value.trim() !== '') {
                showValidationMessage('url-error', validation.message, true, 3000);
            } else {
                hideValidationMessage('url-error');
            }
        });
    }

    // Auto-validate JSON fields on change
    const headersField = document.querySelector('sdpi-textarea[setting="headers"]');
    if (headersField) {
        headersField.addEventListener('change', () => {
            if (headersField.value.trim() !== '') {
                const validation = validateJSON(headersField.value, 'Headers');
                if (!validation.isValid) {
                    showValidationMessage('headers-error', validation.message, true, 3000);
                    hideValidationMessage('headers-success');
                } else {
                    hideValidationMessage('headers-error');
                }
            }
        });
    }

    const bodyField = document.querySelector('sdpi-textarea[setting="body"]');
    if (bodyField) {
        bodyField.addEventListener('change', () => {
            if (bodyField.value.trim() !== '') {
                const validation = validateJSON(bodyField.value, 'Body');
                if (!validation.isValid) {
                    showValidationMessage('body-error', validation.message, true, 3000);
                    hideValidationMessage('body-success');
                } else {
                    hideValidationMessage('body-error');
                }
            }
        });
    }
}

// Initialize when DOM is loaded
if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', setupEventHandlers);
} else {
    setupEventHandlers();
}