/**
 * AniWorld - Main Config Module
 *
 * Handles main configuration (directory, connection) and config management
 * (backup, export, validate, reset).
 *
 * Dependencies: constants.js, api-client.js, ui-utils.js
 */

var AniWorld = window.AniWorld || {};

AniWorld.MainConfig = (function() {
    'use strict';

    const API = AniWorld.Constants.API;

    /**
     * Save main configuration
     */
    async function save() {
        try {
            const animeDirectory = document.getElementById('anime-directory-input').value.trim();
            const appName = document.getElementById('app-name-input').value.trim();
            const dataDir = document.getElementById('data-dir-input').value.trim();

            if (!animeDirectory) {
                AniWorld.UI.showToast('Please enter an anime directory path', 'error');
                return;
            }

            // Get current config
            const currentConfig = await loadCurrentConfig();
            if (!currentConfig) {
                AniWorld.UI.showToast('Failed to load current configuration', 'error');
                return;
            }

            // Update fields
            if (appName) currentConfig.name = appName;
            if (dataDir) currentConfig.data_dir = dataDir;
            if (!currentConfig.other) currentConfig.other = {};
            currentConfig.other.anime_directory = animeDirectory;

            // Save updated config
            const response = await AniWorld.ApiClient.put(AniWorld.Constants.API.CONFIG, currentConfig);

            if (!response) return;
            const data = await response.json();

            AniWorld.UI.showToast('Main configuration saved successfully', 'success');
            await refreshStatus();
        } catch (error) {
            console.error('Error saving main config:', error);
            AniWorld.UI.showToast('Failed to save main configuration', 'error');
        }
    }

    /**
     * Load current configuration from API
     */
    async function loadCurrentConfig() {
        try {
            const response = await AniWorld.ApiClient.get(AniWorld.Constants.API.CONFIG);
            if (!response) return null;
            return await response.json();
        } catch (error) {
            console.error('Error loading config:', error);
            return null;
        }
    }

    /**
     * Reset main configuration
     */
    function reset() {
        if (confirm('Are you sure you want to reset the main configuration? This will clear the anime directory.')) {
            document.getElementById('anime-directory-input').value = '';
            document.getElementById('series-count-input').value = '0';
            AniWorld.UI.showToast('Main configuration reset', 'info');
        }
    }

    /**
     * Test network connection
     */
    async function testConnection() {
        try {
            AniWorld.UI.showToast('Testing connection...', 'info');

            const response = await AniWorld.ApiClient.get(API.DIAGNOSTICS_NETWORK);
            if (!response) return;

            const data = await response.json();

            if (data.status === 'success') {
                const networkStatus = data.data;
                const connectionDiv = document.getElementById('connection-status-display');
                const statusIndicator = connectionDiv.querySelector('.status-indicator');
                const statusText = connectionDiv.querySelector('.status-text');

                if (networkStatus.aniworld_reachable) {
                    statusIndicator.className = 'status-indicator connected';
                    statusText.textContent = 'Connected';
                    AniWorld.UI.showToast('Connection test successful', 'success');
                } else {
                    statusIndicator.className = 'status-indicator disconnected';
                    statusText.textContent = 'Disconnected';
                    AniWorld.UI.showToast('Connection test failed', 'error');
                }
            } else {
                AniWorld.UI.showToast('Connection test failed', 'error');
            }
        } catch (error) {
            console.error('Error testing connection:', error);
            AniWorld.UI.showToast('Connection test failed', 'error');
        }
    }

    /**
     * Browse for directory
     */
    function browseDirectory() {
        const currentPath = document.getElementById('anime-directory-input').value;
        const newPath = prompt('Enter the anime directory path:', currentPath);

        if (newPath !== null && newPath.trim() !== '') {
            document.getElementById('anime-directory-input').value = newPath.trim();
        }
    }

    /**
     * Refresh status display
     */
    async function refreshStatus() {
        try {
            // Load full configuration
            const config = await loadCurrentConfig();
            if (!config) return;

            // Populate general settings
            document.getElementById('app-name-input').value = config.name || 'Aniworld';
            document.getElementById('data-dir-input').value = config.data_dir || 'data';
            document.getElementById('anime-directory-input').value = config.other?.anime_directory || '';

            // Populate scheduler settings
            document.getElementById('scheduled-rescan-enabled').checked = config.scheduler?.enabled || false;
            document.getElementById('scheduled-rescan-interval').value = config.scheduler?.interval_minutes || 60;

            // Populate logging settings
            document.getElementById('log-level').value = config.logging?.level || 'INFO';
            document.getElementById('log-file').value = config.logging?.file || '';
            document.getElementById('log-max-bytes').value = config.logging?.max_bytes || '';
            document.getElementById('log-backup-count').value = config.logging?.backup_count || 3;

            // Populate backup settings
            document.getElementById('backup-enabled').checked = config.backup?.enabled || false;
            document.getElementById('backup-path').value = config.backup?.path || 'data/backups';
            document.getElementById('backup-keep-days').value = config.backup?.keep_days || 30;

            // Populate NFO settings
            document.getElementById('tmdb-api-key').value = config.nfo?.tmdb_api_key || '';
            document.getElementById('nfo-auto-create').checked = config.nfo?.auto_create || false;
            document.getElementById('nfo-update-on-scan').checked = config.nfo?.update_on_scan || false;
            document.getElementById('nfo-download-poster').checked = config.nfo?.download_poster !== false;
            document.getElementById('nfo-download-logo').checked = config.nfo?.download_logo !== false;
            document.getElementById('nfo-download-fanart').checked = config.nfo?.download_fanart !== false;
            document.getElementById('nfo-image-size').value = config.nfo?.image_size || 'original';

            // Get series count from status endpoint
            const statusResponse = await AniWorld.ApiClient.get(API.ANIME_STATUS);
            if (statusResponse) {
                const statusData = await statusResponse.json();
                document.getElementById('series-count-input').value = statusData.series_count || '0';
            }
        } catch (error) {
            console.error('Error refreshing status:', error);
        }
    }

    /**
     * Create configuration backup
     */
    async function createBackup() {
        const backupName = prompt('Enter backup name (optional):');

        try {
            const response = await AniWorld.ApiClient.request(API.CONFIG_BACKUP, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ name: backupName || '' })
            });

            if (!response) return;
            const data = await response.json();

            if (data.success) {
                AniWorld.UI.showToast('Backup created: ' + data.filename, 'success');
            } else {
                AniWorld.UI.showToast('Failed to create backup: ' + data.error, 'error');
            }
        } catch (error) {
            console.error('Error creating backup:', error);
            AniWorld.UI.showToast('Failed to create backup', 'error');
        }
    }

    /**
     * View configuration backups
     */
    async function viewBackups() {
        try {
            const response = await AniWorld.ApiClient.get(API.CONFIG_BACKUPS);
            if (!response) return;

            const data = await response.json();

            if (data.success) {
                showBackupsModal(data.backups);
            } else {
                AniWorld.UI.showToast('Failed to load backups: ' + data.error, 'error');
            }
        } catch (error) {
            console.error('Error loading backups:', error);
            AniWorld.UI.showToast('Failed to load backups', 'error');
        }
    }

    /**
     * Show backups modal
     */
    function showBackupsModal(backups) {
        // Implementation for showing backups modal
        console.log('Backups:', backups);
        AniWorld.UI.showToast('Found ' + backups.length + ' backup(s)', 'info');
    }

    /**
     * Export configuration
     */
    function exportConfig() {
        AniWorld.UI.showToast('Export configuration feature coming soon', 'info');
    }

    /**
     * Validate configuration
     */
    async function validateConfig() {
        try {
            const response = await AniWorld.ApiClient.request(API.CONFIG_VALIDATE, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({})
            });

            if (!response) return;
            const data = await response.json();

            if (data.success) {
                showValidationResults(data.validation);
            } else {
                AniWorld.UI.showToast('Validation failed: ' + data.error, 'error');
            }
        } catch (error) {
            console.error('Error validating config:', error);
            AniWorld.UI.showToast('Failed to validate configuration', 'error');
        }
    }

    /**
     * Show validation results
     */
    function showValidationResults(validation) {
        const container = document.getElementById('validation-results');
        container.innerHTML = '';
        container.classList.remove('hidden');

        if (validation.valid) {
            const success = document.createElement('div');
            success.className = 'validation-success';
            success.innerHTML = '<i class="fas fa-check-circle"></i> Configuration is valid!';
            container.appendChild(success);
        } else {
            const header = document.createElement('div');
            header.innerHTML = '<strong>Validation Issues Found:</strong>';
            container.appendChild(header);
        }

        // Show errors
        validation.errors.forEach(function(error) {
            const errorDiv = document.createElement('div');
            errorDiv.className = 'validation-error';
            errorDiv.innerHTML = '<i class="fas fa-times-circle"></i> Error: ' + error;
            container.appendChild(errorDiv);
        });

        // Show warnings
        validation.warnings.forEach(function(warning) {
            const warningDiv = document.createElement('div');
            warningDiv.className = 'validation-warning';
            warningDiv.innerHTML = '<i class="fas fa-exclamation-triangle"></i> Warning: ' + warning;
            container.appendChild(warningDiv);
        });
    }

    /**
     * Reset all configuration to defaults
     */
    async function resetAllConfig() {
        if (!confirm('Are you sure you want to reset all configuration to defaults? This cannot be undone (except by restoring a backup).')) {
            return;
        }

        try {
            const response = await AniWorld.ApiClient.request(API.CONFIG_RESET, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ preserve_security: true })
            });

            if (!response) return;
            const data = await response.json();

            if (data.success) {
                AniWorld.UI.showToast('Configuration reset to defaults', 'success');
                // Notify caller to reload config modal
                return true;
            } else {
                AniWorld.UI.showToast('Failed to reset config: ' + data.error, 'error');
                return false;
            }
        } catch (error) {
            console.error('Error resetting config:', error);
            AniWorld.UI.showToast('Failed to reset configuration', 'error');
            return false;
        }
    }

    /**
     * Save backup configuration
     */
    async function saveBackupConfig() {
        try {
            const config = await loadCurrentConfig();
            if (!config) {
                AniWorld.UI.showToast('Failed to load current configuration', 'error');
                return;
            }

            // Update backup settings
            config.backup = {
                enabled: document.getElementById('backup-enabled').checked,
                path: document.getElementById('backup-path').value.trim(),
                keep_days: parseInt(document.getElementById('backup-keep-days').value) || 30
            };

            // Save updated config
            const response = await AniWorld.ApiClient.put(AniWorld.Constants.API.CONFIG, config);

            if (!response) return;

            AniWorld.UI.showToast('Backup configuration saved successfully', 'success');
        } catch (error) {
            console.error('Error saving backup config:', error);
            AniWorld.UI.showToast('Failed to save backup configuration', 'error');
        }
    }

    // Public API
    return {
        save: save,
        reset: reset,
        testConnection: testConnection,
        browseDirectory: browseDirectory,
        refreshStatus: refreshStatus,
        createBackup: createBackup,
        viewBackups: viewBackups,
        exportConfig: exportConfig,
        validateConfig: validateConfig,
        resetAllConfig: resetAllConfig,
        saveBackupConfig: saveBackupConfig
    };
})();