// LorasControls.js - Specific implementation for the LoRAs page
import { PageControls } from './PageControls.js';
import { loadMoreLoras, fetchCivitai, resetAndReload, refreshLoras } from '../../api/loraApi.js';
import { getSessionItem, removeSessionItem } from '../../utils/storageHelpers.js';
import { showToast } from '../../utils/uiHelpers.js';

/**
 * LorasControls class - Extends PageControls for LoRA-specific functionality
 */
export class LorasControls extends PageControls {
    constructor() {
        // Initialize with 'loras' page type
        super('loras');
        
        // Register API methods specific to the LoRAs page
        this.registerLorasAPI();
        
        // Check for custom filters (e.g., from recipe navigation)
        this.checkCustomFilters();
    }
    
    /**
     * Register LoRA-specific API methods
     */
    registerLorasAPI() {
        const lorasAPI = {
            // Core API functions
            loadMoreModels: async (resetPage = false, updateFolders = false) => {
                return await loadMoreLoras(resetPage, updateFolders);
            },
            
            resetAndReload: async (updateFolders = false) => {
                return await resetAndReload(updateFolders);
            },
            
            refreshModels: async () => {
                return await refreshLoras();
            },
            
            // LoRA-specific API functions
            fetchFromCivitai: async () => {
                return await fetchCivitai();
            },
            
            showDownloadModal: () => {
                if (window.downloadManager) {
                    window.downloadManager.showDownloadModal();
                } else {
                    console.error('Download manager not available');
                }
            },
            
            toggleBulkMode: () => {
                if (window.bulkManager) {
                    window.bulkManager.toggleBulkMode();
                } else {
                    console.error('Bulk manager not available');
                }
            },
            
            clearCustomFilter: async () => {
                await this.clearCustomFilter();
            }
        };
        
        // Register the API
        this.registerAPI(lorasAPI);
    }
    
    /**
     * Check for custom filter parameters in session storage (e.g., from recipe page navigation)
     */
    checkCustomFilters() {
        const filterLoraHash = getSessionItem('recipe_to_lora_filterLoraHash');
        const filterLoraHashes = getSessionItem('recipe_to_lora_filterLoraHashes');
        const filterRecipeName = getSessionItem('filterRecipeName');
        const viewLoraDetail = getSessionItem('viewLoraDetail');
        
        if ((filterLoraHash || filterLoraHashes) && filterRecipeName) {
            // Found custom filter parameters, set up the custom filter
            
            // Show the filter indicator
            const indicator = document.getElementById('customFilterIndicator');
            const filterText = indicator?.querySelector('.customFilterText');
            
            if (indicator && filterText) {
                indicator.classList.remove('hidden');
                
                // Set text content with recipe name
                const filterType = filterLoraHash && viewLoraDetail ? "Viewing LoRA from" : "Viewing LoRAs from";
                const displayText = `${filterType}: ${filterRecipeName}`;
                
                filterText.textContent = this._truncateText(displayText, 30);
                filterText.setAttribute('title', displayText);
                
                // Add pulse animation
                const filterElement = indicator.querySelector('.filter-active');
                if (filterElement) {
                    filterElement.classList.add('animate');
                    setTimeout(() => filterElement.classList.remove('animate'), 600);
                }
            }
            
            // If we're viewing a specific LoRA detail, set up to open the modal
            if (filterLoraHash && viewLoraDetail) {
                this.pageState.pendingLoraHash = filterLoraHash;
            }
        }
    }
    
    /**
     * Clear the custom filter and reload the page
     */
    async clearCustomFilter() {
        console.log("Clearing custom filter...");
        // Remove filter parameters from session storage
        removeSessionItem('recipe_to_lora_filterLoraHash');
        removeSessionItem('recipe_to_lora_filterLoraHashes');
        removeSessionItem('filterRecipeName');
        removeSessionItem('viewLoraDetail');
        
        // Hide the filter indicator
        const indicator = document.getElementById('customFilterIndicator');
        if (indicator) {
            indicator.classList.add('hidden');
        }
        
        // Reset state
        if (this.pageState.pendingLoraHash) {
            delete this.pageState.pendingLoraHash;
        }
        
        // Reload the loras
        await resetAndReload();
    }
    
    /**
     * Helper to truncate text with ellipsis
     * @param {string} text - Text to truncate
     * @param {number} maxLength - Maximum length before truncating
     * @returns {string} - Truncated text
     */
    _truncateText(text, maxLength) {
        return text.length > maxLength ? text.substring(0, maxLength - 3) + '...' : text;
    }
}