// Android Studio Web - Complete JavaScript with Real Build

// ==================== Global Variables ====================
let currentProject = null;
let currentFile = null;
let currentFilePath = null;
let terminal = null;
let ws = null;
let activeBuildId = null;
let files = [];
let projects = [];

// ==================== Initialize on Load ====================
document.addEventListener('DOMContentLoaded', function() {
    // Load Lucide icons
    lucide.createIcons();
    
    // Initialize terminal
    initTerminal();
    
    // Load projects
    loadProjects();
    
    // Setup event listeners
    setupEventListeners();
    
    // Update status
    updateStatus('Ready', 'success');
});

// ==================== Terminal Functions ====================
function initTerminal() {
    const terminalContainer = document.getElementById('terminal-panel');
    
    terminal = new Terminal({
        theme: {
            background: '#1E1E1E',
            foreground: '#A9B7C6',
            cursor: '#3DDC84',
            selection: '#214283'
        },
        fontFamily: 'JetBrains Mono, monospace',
        fontSize: 12,
        cursorBlink: true,
        scrollback: 5000
    });
    
    terminal.open(terminalContainer);
    
    // Connect WebSocket
    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
    const wsUrl = `${protocol}//${window.location.host}`;
    
    ws = new WebSocket(wsUrl);
    
    ws.onopen = () => {
        terminal.write('\x1b[32mAndroid Studio Web Terminal\x1b[0m\r\n');
        terminal.write('\x1b[32mProject workspace: /workspace\x1b[0m\r\n');
        terminal.write('$ ');
    };
    
    ws.onmessage = (event) => {
        const data = JSON.parse(event.data);
        if (data.type === 'data') {
            terminal.write(data.data);
        }
    };
    
    ws.onerror = (error) => {
        terminal.write('\x1b[31mTerminal connection error\x1b[0m\r\n');
    };
    
    terminal.onData((data) => {
        if (ws && ws.readyState === WebSocket.OPEN) {
            ws.send(JSON.stringify({ type: 'input', data }));
        }
    });
    
    terminal.onResize((size) => {
        if (ws && ws.readyState === WebSocket.OPEN) {
            ws.send(JSON.stringify({ type: 'resize', data: size }));
        }
    });
}

// ==================== Project Functions ====================
async function loadProjects() {
    try {
        const response = await fetch('/api/projects');
        const data = await response.json();
        projects = data.projects || [];
        renderProjectList();
    } catch (error) {
        console.error('Failed to load projects:', error);
    }
}

function renderProjectList() {
    const projectList = document.getElementById('project-list');
    if (!projectList) return;
    
    if (projects.length === 0) {
        projectList.innerHTML = '<div class="p-2 text-gray-400">No projects found</div>';
        return;
    }
    
    let html = '';
    projects.forEach(project => {
        html += `
            <div class="project-item" onclick="openProject('${project}')">
                <i data-lucide="folder" class="w-4 h-4 text-yellow-500"></i>
                <span>${project}</span>
            </div>
        `;
    });
    
    projectList.innerHTML = html;
    lucide.createIcons();
}

function toggleProjectDropdown() {
    const dropdown = document.getElementById('project-dropdown');
    dropdown.classList.toggle('hidden');
}

async function createNewProject() {
    const name = prompt('Enter project name:');
    if (!name) return;
    
    updateStatus('Creating project...', 'building');
    
    try {
        const response = await fetch('/api/project/create', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ name })
        });
        
        const data = await response.json();
        
        if (data.success) {
            await loadProjects();
            await openProject(name);
            updateStatus('Project created', 'success');
        } else {
            updateStatus('Failed to create project', 'error');
        }
    } catch (error) {
        updateStatus('Error creating project', 'error');
    }
    
    toggleProjectDropdown();
}

async function openProject(projectName) {
    currentProject = projectName;
    document.getElementById('current-project').textContent = projectName;
    document.getElementById('project-name-display').textContent = projectName;
    document.getElementById('preview-app-name').textContent = projectName;
    
    toggleProjectDropdown();
    await loadProjectFiles();
}

async function loadProjectFiles() {
    if (!currentProject) return;
    
    try {
        const response = await fetch(`/api/files/${currentProject}/`);
        const data = await response.json();
        
        if (data.type === 'directory') {
            files = data.files || [];
            renderFileTree();
        }
    } catch (error) {
        console.error('Failed to load files:', error);
    }
}

function renderFileTree() {
    const treeElement = document.getElementById('file-tree');
    
    if (files.length === 0) {
        treeElement.innerHTML = '<div class="px-3 py-1 text-xs text-gray-500">No files found</div>';
        return;
    }
    
    let html = '<div class="px-3 py-1 text-xs text-gray-500 uppercase">app/src/main</div>';
    
    // Simple file tree - you can make this recursive for full structure
    files.forEach(file => {
        if (file.includes('.')) {
            const icon = file.endsWith('.kt') ? 'file-code' : 
                        file.endsWith('.xml') ? 'file-text' : 'file';
            const color = file.endsWith('.kt') ? 'text-blue-300' : 
                         file.endsWith('.xml') ? 'text-orange-300' : 'text-gray-400';
            
            html += `
                <div class="file-item px-3 py-1.5 flex items-center space-x-2 cursor-pointer text-sm"
                     onclick="openFile('${file}')">
                    <i data-lucide="${icon}" class="w-4 h-4 ${color}"></i>
                    <span>${file}</span>
                </div>
            `;
        }
    });
    
    treeElement.innerHTML = html;
    lucide.createIcons();
}

// ==================== File Functions ====================
async function openFile(filename) {
    if (!currentProject) {
        alert('Please open a project first');
        return;
    }
    
    currentFile = filename;
    currentFilePath = filename;
    
    try {
        const response = await fetch(`/api/files/${currentProject}/${filename}`);
        const data = await response.json();
        
        if (data.type === 'file') {
            document.getElementById('code-editor').innerHTML = data.content;
            updateLineNumbers();
            addTab(filename);
        }
    } catch (error) {
        console.error('Failed to open file:', error);
    }
    
    // Update active state
    document.querySelectorAll('.file-item').forEach(el => {
        el.classList.remove('active');
        if (el.textContent.trim() === filename) {
            el.classList.add('active');
        }
    });
}

function addTab(filename) {
    const tabs = document.getElementById('editor-tabs');
    
    // Check if tab already exists
    const existingTab = Array.from(tabs.children).find(
        tab => tab.dataset.file === filename
    );
    
    if (existingTab) return;
    
    const icon = filename.endsWith('.kt') ? 'file-code' : 
                filename.endsWith('.xml') ? 'file-text' : 'file';
    const color = filename.endsWith('.kt') ? 'text-blue-300' : 
                 filename.endsWith('.xml') ? 'text-orange-300' : 'text-gray-400';
    
    const tabHtml = `
        <div class="px-4 py-2 flex items-center space-x-2 text-sm text-white bg-[#2B2B2B] border-t-2 border-[#3DDC84] cursor-pointer"
             data-file="${filename}"
             onclick="switchToTab('${filename}')">
            <i data-lucide="${icon}" class="w-4 h-4 ${color}"></i>
            <span>${filename}</span>
            <i data-lucide="x" class="w-3 h-3 hover:text-red-400 cursor-pointer ml-2" 
               onclick="closeTab(event, '${filename}')"></i>
        </div>
    `;
    
    tabs.insertAdjacentHTML('beforeend', tabHtml);
    lucide.createIcons();
}

function switchToTab(filename) {
    openFile(filename);
}

function closeTab(event, filename) {
    event.stopPropagation();
    const tab = event.target.closest('[data-file]');
    if (tab) {
        tab.remove();
        if (currentFile === filename) {
            const firstTab = document.querySelector('[data-file]');
            if (firstTab) {
                openFile(firstTab.dataset.file);
            } else {
                currentFile = null;
                document.getElementById('code-editor').innerHTML = '// No file open';
                updateLineNumbers();
            }
        }
    }
}

async function saveCurrentFile() {
    if (!currentProject || !currentFile) {
        alert('No file open');
        return;
    }
    
    const content = document.getElementById('code-editor').innerText;
    
    try {
        const response = await fetch(`/api/file/${currentProject}/${currentFile}`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ content })
        });
        
        const data = await response.json();
        
        if (data.success) {
            updateStatus('File saved', 'success');
        }
    } catch (error) {
        updateStatus('Save failed', 'error');
    }
}

function createNewFile() {
    if (!currentProject) {
        alert('Please open a project first');
        return;
    }
    
    const filename = prompt('Enter file name (e.g., NewFile.kt):');
    if (filename) {
        currentFile = filename;
        document.getElementById('code-editor').innerHTML = getDefaultContent(filename);
        updateLineNumbers();
        addTab(filename);
        saveCurrentFile();
    }
}

function getDefaultContent(filename) {
    if (filename.endsWith('.kt')) {
        return `package com.example.app

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }
}`;
    } else if (filename.endsWith('.xml')) {
        return `<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />
        
</LinearLayout>`;
    }
    return '';
}

function refreshFiles() {
    if (currentProject) {
        loadProjectFiles();
    }
}

// ==================== Build Functions ====================
async function startBuild() {
    if (!currentProject) {
        alert('Please open a project first');
        return;
    }
    
    switchPanel('build');
    const buildPanel = document.getElementById('build-panel');
    buildPanel.innerHTML = '<div class="building">🔨 Building APK...</div>';
    updateStatus('Building...', 'building');
    
    try {
        const response = await fetch(`/api/build/${currentProject}`, {
            method: 'POST'
        });
        
        const data = await response.json();
        activeBuildId = data.buildId;
        
        // Poll for build status
        checkBuildStatus(activeBuildId);
        
    } catch (error) {
        buildPanel.innerHTML = '<div class="build-error">❌ Build failed to start</div>';
        updateStatus('Build failed', 'error');
    }
}

async function checkBuildStatus(buildId) {
    const buildPanel = document.getElementById('build-panel');
    
    try {
        const response = await fetch(`/api/build/${buildId}`);
        const data = await response.json();
        
        if (data.output) {
            let html = data.output.replace(/\n/g, '<br>')
                .replace(/SUCCESS/g, '<span class="build-success">SUCCESS</span>')
                .replace(/FAILED/g, '<span class="build-error">FAILED</span>')
                .replace(/warning/g, '<span class="build-warning">warning</span>');
            
            buildPanel.innerHTML = html;
        }
        
        if (data.success !== undefined) {
            if (data.success) {
                buildPanel.innerHTML += '<br><br><div class="build-success">✅ Build successful! APK ready.</div>';
                updateStatus('Build successful', 'success');
            } else {
                buildPanel.innerHTML += '<br><br><div class="build-error">❌ Build failed</div>';
                updateStatus('Build failed', 'error');
            }
        } else {
            // Still building, check again
            setTimeout(() => checkBuildStatus(buildId), 1000);
        }
        
    } catch (error) {
        buildPanel.innerHTML = '<div class="build-error">Error checking build status</div>';
    }
}

async function downloadAPK() {
    if (!currentProject) {
        alert('Please open a project first');
        return;
    }
    
    window.location.href = `/api/apk/${currentProject}`;
}

// ==================== Preview Functions ====================
async function uploadLogo() {
    if (!currentProject) {
        alert('Please open a project first');
        return;
    }
    
    const input = document.createElement('input');
    input.type = 'file';
    input.accept = 'image/*';
    
    input.onchange = async (e) => {
        const file = e.target.files[0];
        const formData = new FormData();
        formData.append('logo', file);
        
        updateStatus('Uploading logo...', 'building');
        
        try {
            const response = await fetch(`/api/logo/upload/${currentProject}`, {
                method: 'POST',
                body: formData
            });
            
            const data = await response.json();
            
            if (data.success) {
                // Update preview logo
                const reader = new FileReader();
                reader.onload = (e) => {
                    document.getElementById('preview-logo').src = e.target.result;
                };
                reader.readAsDataURL(file);
                
                updateStatus('Logo updated', 'success');
            }
        } catch (error) {
            updateStatus('Logo upload failed', 'error');
        }
    };
    
    input.click();
}

function installOnPreview() {
    const appScreen = document.getElementById('app-screen');
    const logo = document.getElementById('preview-logo');
    const appName = document.getElementById('preview-app-name');
    
    // Simulate app installation
    updateStatus('Installing on Android 10...', 'building');
    
    setTimeout(() => {
        appScreen.innerHTML = `
            <div class="logo-container">
                <img id="preview-logo" src="${logo.src}" alt="App Logo" style="width: 96px; height: 96px; border-radius: 20px;">
                <h3 id="preview-app-name" style="font-size: 20px; font-weight: 600; color: #333; margin-top: 16px;">${appName.textContent}</h3>
                <p style="font-size: 12px; color: #666; margin-top: 4px;">Running on Android 10</p>
                <div style="margin-top: 20px; padding: 8px 16px; background: #3DDC84; color: white; border-radius: 20px; font-size: 12px;">
                    App installed
                </div>
            </div>
        `;
        updateStatus('App installed on preview', 'success');
    }, 2000);
}

function rotatePreview() {
    const phone = document.getElementById('phone-preview');
    phone.classList.toggle('rotated');
}

function toggleTheme() {
    const statusBar = document.getElementById('status-bar');
    const appScreen = document.getElementById('app-screen');
    const navBar = document.getElementById('nav-bar');
    
    statusBar.classList.toggle('light');
    appScreen.classList.toggle('dark');
    navBar.classList.toggle('light');
}

function simulateBack() {
    updateStatus('Back button pressed', 'info');
}

function simulateHome() {
    updateStatus('Home button pressed', 'info');
    // Reset to home screen
    const appScreen = document.getElementById('app-screen');
    appScreen.innerHTML = `
        <div class="logo-container">
            <img id="preview-logo" src="${document.getElementById('preview-logo').src}" alt="App Logo" style="width: 96px; height: 96px; border-radius: 20px;">
            <h3 id="preview-app-name" style="font-size: 20px; font-weight: 600; color: #333; margin-top: 16px;">${document.getElementById('preview-app-name').textContent}</h3>
            <p class="app-version">Android 10 (API 29)</p>
        </div>
    `;
}

function simulateRecent() {
    updateStatus('Recent apps button pressed', 'info');
}

// ==================== UI Functions ====================
function updateLineNumbers() {
    const editor = document.getElementById('code-editor');
    const lines = editor.innerText.split('\n').length;
    const lineNumbers = document.getElementById('line-numbers');
    
    let html = '';
    for (let i = 1; i <= lines; i++) {
        html += `<div class="leading-6">${i}</div>`;
    }
    lineNumbers.innerHTML = html;
}

function syncScroll() {
    const editor = document.getElementById('code-editor');
    const lineNumbers = document.getElementById('line-numbers');
    lineNumbers.scrollTop = editor.scrollTop;
}

function switchPanel(panel) {
    // Hide all panels
    document.getElementById('terminal-panel').classList.add('hidden');
    document.getElementById('build-panel').classList.add('hidden');
    
    // Show selected panel
    document.getElementById(`${panel}-panel`).classList.remove('hidden');
    
    // Update tab styles
    document.querySelectorAll('.panel-tab').forEach(tab => {
        tab.classList.remove('border-[#3DDC84]', 'text-white');
        tab.classList.add('text-gray-400');
    });
    
    event.currentTarget.classList.add('border-[#3DDC84]', 'text-white');
    event.currentTarget.classList.remove('text-gray-400');
}

function updateStatus(message, type) {
    const statusEl = document.getElementById('status-message');
    statusEl.textContent = message;
    
    const colors = {
        success: '#3DDC84',
        error: '#CF6679',
        building: '#FBC02D',
        info: '#64B5F6'
    };
    
    statusEl.style.color = colors[type] || '#000000';
}

function openSettings() {
    alert('Settings dialog would open here');
}

function setupEventListeners() {
    // Keyboard shortcuts
    document.addEventListener('keydown', (e) => {
        if (e.ctrlKey && e.key === 's') {
            e.preventDefault();
            saveCurrentFile();
        }
        
        if (e.key === 'F5') {
            e.preventDefault();
            startBuild();
        }
    });
    
    // Click outside to close dropdown
    document.addEventListener('click', (e) => {
        if (!e.target.closest('.relative')) {
            document.getElementById('project-dropdown').classList.add('hidden');
        }
    });
}

// Export functions for HTML
window.toggleProjectDropdown = toggleProjectDropdown;
window.createNewProject = createNewProject;
window.openProject = openProject;
window.openFile = openFile;
window.saveCurrentFile = saveCurrentFile;
window.createNewFile = createNewFile;
window.refreshFiles = refreshFiles;
window.startBuild = startBuild;
window.downloadAPK = downloadAPK;
window.installOnPreview = installOnPreview;
window.rotatePreview = rotatePreview;
window.toggleTheme = toggleTheme;
window.uploadLogo = uploadLogo;
window.simulateBack = simulateBack;
window.simulateHome = simulateHome;
window.simulateRecent = simulateRecent;
window.switchPanel = switchPanel;
window.updateLineNumbers = updateLineNumbers;
window.syncScroll = syncScroll;
window.openSettings = openSettings;
window.switchToTab = switchToTab;
window.closeTab = closeTab;