// MacroPad PWA Application

class MacroPadApp {
    constructor() {
        this.macros = {};
        this.tabs = [];
        this.currentTab = 'All';
        this.ws = null;
        this.editingMacroId = null;
        this.commands = [];

        this.init();
    }

    async init() {
        await this.loadTabs();
        await this.loadMacros();
        this.setupWebSocket();
        this.setupEventListeners();
        this.checkInstallPrompt();
    }

    // API Methods
    async loadTabs() {
        try {
            const response = await fetch('/api/tabs');
            const data = await response.json();
            this.tabs = data.tabs || [];
            this.renderTabs();
        } catch (error) {
            console.error('Error loading tabs:', error);
            this.showToast('Error loading tabs', 'error');
        }
    }

    async loadMacros() {
        try {
            const url = this.currentTab === 'All'
                ? '/api/macros'
                : `/api/macros/${encodeURIComponent(this.currentTab)}`;
            const response = await fetch(url);
            const data = await response.json();
            this.macros = data.macros || {};
            this.renderMacros();
        } catch (error) {
            console.error('Error loading macros:', error);
            this.showToast('Error loading macros', 'error');
        }
    }

    async executeMacro(macroId) {
        try {
            const card = document.querySelector(`[data-macro-id="${macroId}"]`);
            if (card) card.classList.add('executing');

            const response = await fetch('/api/execute', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ macro_id: macroId })
            });

            if (!response.ok) throw new Error('Execution failed');

            setTimeout(() => {
                if (card) card.classList.remove('executing');
            }, 300);
        } catch (error) {
            console.error('Error executing macro:', error);
            this.showToast('Error executing macro', 'error');
        }
    }

    async saveMacro() {
        const name = document.getElementById('macro-name').value.trim();
        const category = document.getElementById('macro-category').value.trim();

        if (!name) {
            this.showToast('Please enter a macro name', 'error');
            return;
        }

        if (this.commands.length === 0) {
            this.showToast('Please add at least one command', 'error');
            return;
        }

        const macroData = {
            name,
            category,
            commands: this.commands
        };

        try {
            let response;
            if (this.editingMacroId) {
                response = await fetch(`/api/macros/${this.editingMacroId}`, {
                    method: 'PUT',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify(macroData)
                });
            } else {
                response = await fetch('/api/macros', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify(macroData)
                });
            }

            if (!response.ok) throw new Error('Save failed');

            this.closeModal();
            await this.loadTabs();
            await this.loadMacros();
            this.showToast('Macro saved successfully', 'success');
        } catch (error) {
            console.error('Error saving macro:', error);
            this.showToast('Error saving macro', 'error');
        }
    }

    async deleteMacro(macroId) {
        if (!confirm('Are you sure you want to delete this macro?')) return;

        try {
            const response = await fetch(`/api/macros/${macroId}`, {
                method: 'DELETE'
            });

            if (!response.ok) throw new Error('Delete failed');

            await this.loadTabs();
            await this.loadMacros();
            this.showToast('Macro deleted', 'success');
        } catch (error) {
            console.error('Error deleting macro:', error);
            this.showToast('Error deleting macro', 'error');
        }
    }

    // WebSocket
    setupWebSocket() {
        const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
        const wsUrl = `${protocol}//${window.location.host}/ws`;

        try {
            this.ws = new WebSocket(wsUrl);

            this.ws.onopen = () => {
                this.updateConnectionStatus(true);
            };

            this.ws.onclose = () => {
                this.updateConnectionStatus(false);
                setTimeout(() => this.setupWebSocket(), 3000);
            };

            this.ws.onmessage = (event) => {
                const data = JSON.parse(event.data);
                this.handleWebSocketMessage(data);
            };

            this.ws.onerror = () => {
                this.updateConnectionStatus(false);
            };
        } catch (error) {
            console.error('WebSocket error:', error);
        }
    }

    handleWebSocketMessage(data) {
        switch (data.type) {
            case 'macro_created':
            case 'macro_updated':
            case 'macro_deleted':
                this.loadTabs();
                this.loadMacros();
                break;
            case 'executed':
                const card = document.querySelector(`[data-macro-id="${data.macro_id}"]`);
                if (card) {
                    card.classList.add('executing');
                    setTimeout(() => card.classList.remove('executing'), 300);
                }
                break;
        }
    }

    updateConnectionStatus(connected) {
        const dot = document.querySelector('.status-dot');
        const text = document.querySelector('.connection-status span');
        if (dot) {
            dot.classList.toggle('connected', connected);
        }
        if (text) {
            text.textContent = connected ? 'Connected' : 'Disconnected';
        }
    }

    // Rendering
    renderTabs() {
        const container = document.getElementById('tabs-container');
        if (!container) return;

        container.innerHTML = this.tabs.map(tab => `
            <button class="tab ${tab === this.currentTab ? 'active' : ''}"
                    data-tab="${tab}">${tab}</button>
        `).join('');
    }

    renderMacros() {
        const container = document.getElementById('macro-grid');
        if (!container) return;

        const macroEntries = Object.entries(this.macros);

        if (macroEntries.length === 0) {
            container.innerHTML = `
                <div class="empty-state">
                    <p>No macros found</p>
                    <button class="btn btn-primary" onclick="app.openAddModal()">
                        Add Your First Macro
                    </button>
                </div>
            `;
            return;
        }

        container.innerHTML = macroEntries.map(([id, macro]) => {
            const imageSrc = macro.image_path
                ? `/api/image/${macro.image_path}`
                : null;
            const firstChar = macro.name.charAt(0).toUpperCase();

            return `
                <div class="macro-card" data-macro-id="${id}" onclick="app.executeMacro('${id}')">
                    <button class="macro-edit-btn" onclick="event.stopPropagation(); app.openEditModal('${id}')">
                        Edit
                    </button>
                    ${imageSrc
                        ? `<img src="${imageSrc}" alt="${macro.name}" class="macro-image" onerror="this.style.display='none';this.nextElementSibling.style.display='flex'">`
                        : ''
                    }
                    <div class="macro-image-placeholder" ${imageSrc ? 'style="display:none"' : ''}>
                        ${firstChar}
                    </div>
                    <span class="macro-name">${macro.name}</span>
                </div>
            `;
        }).join('');
    }

    renderCommandList() {
        const container = document.getElementById('command-list');
        if (!container) return;

        if (this.commands.length === 0) {
            container.innerHTML = '<div class="empty-state"><p>No commands added yet</p></div>';
            return;
        }

        container.innerHTML = this.commands.map((cmd, index) => {
            let displayValue = '';
            switch (cmd.type) {
                case 'text':
                    displayValue = cmd.value || '';
                    break;
                case 'key':
                    displayValue = cmd.value || '';
                    break;
                case 'hotkey':
                    displayValue = (cmd.keys || []).join(' + ');
                    break;
                case 'wait':
                    displayValue = `${cmd.ms || 0}ms`;
                    break;
                case 'app':
                    displayValue = cmd.command || '';
                    break;
            }

            return `
                <div class="command-item" data-index="${index}">
                    <span class="command-type">${cmd.type}</span>
                    <span class="command-value">${displayValue}</span>
                    <div class="command-actions">
                        <button onclick="app.moveCommand(${index}, -1)">Up</button>
                        <button onclick="app.moveCommand(${index}, 1)">Down</button>
                        <button class="delete" onclick="app.removeCommand(${index})">X</button>
                    </div>
                </div>
            `;
        }).join('');
    }

    // Command Builder
    addCommand(type) {
        let command = { type };

        switch (type) {
            case 'text':
                const text = prompt('Enter text to type:');
                if (!text) return;
                command.value = text;
                break;
            case 'key':
                const key = prompt('Enter key to press (e.g., enter, tab, escape, space):');
                if (!key) return;
                command.value = key.toLowerCase();
                break;
            case 'hotkey':
                const keys = prompt('Enter key combination (comma separated, e.g., ctrl,c):');
                if (!keys) return;
                command.keys = keys.split(',').map(k => k.trim().toLowerCase());
                break;
            case 'wait':
                const ms = prompt('Enter delay in milliseconds:');
                if (!ms) return;
                command.ms = parseInt(ms, 10) || 0;
                break;
            case 'app':
                const appCmd = prompt('Enter application command:');
                if (!appCmd) return;
                command.command = appCmd;
                break;
        }

        this.commands.push(command);
        this.renderCommandList();
    }

    removeCommand(index) {
        this.commands.splice(index, 1);
        this.renderCommandList();
    }

    moveCommand(index, direction) {
        const newIndex = index + direction;
        if (newIndex < 0 || newIndex >= this.commands.length) return;

        [this.commands[index], this.commands[newIndex]] =
            [this.commands[newIndex], this.commands[index]];
        this.renderCommandList();
    }

    // Modal
    openAddModal() {
        this.editingMacroId = null;
        this.commands = [];
        document.getElementById('macro-name').value = '';
        document.getElementById('macro-category').value = '';
        document.getElementById('modal-title').textContent = 'Add Macro';
        document.getElementById('delete-btn').style.display = 'none';
        this.renderCommandList();
        document.getElementById('modal-overlay').style.display = 'flex';
    }

    async openEditModal(macroId) {
        this.editingMacroId = macroId;
        const macro = this.macros[macroId];
        if (!macro) return;

        document.getElementById('macro-name').value = macro.name || '';
        document.getElementById('macro-category').value = macro.category || '';
        document.getElementById('modal-title').textContent = 'Edit Macro';
        document.getElementById('delete-btn').style.display = 'block';

        this.commands = JSON.parse(JSON.stringify(macro.commands || []));
        this.renderCommandList();
        document.getElementById('modal-overlay').style.display = 'flex';
    }

    closeModal() {
        document.getElementById('modal-overlay').style.display = 'none';
        this.editingMacroId = null;
        this.commands = [];
    }

    // Event Listeners
    setupEventListeners() {
        // Tab clicks
        document.getElementById('tabs-container')?.addEventListener('click', (e) => {
            if (e.target.classList.contains('tab')) {
                this.currentTab = e.target.dataset.tab;
                this.renderTabs();
                this.loadMacros();
            }
        });

        // Modal close on overlay click
        document.getElementById('modal-overlay')?.addEventListener('click', (e) => {
            if (e.target.id === 'modal-overlay') {
                this.closeModal();
            }
        });

        // Escape key to close modal
        document.addEventListener('keydown', (e) => {
            if (e.key === 'Escape') {
                this.closeModal();
            }
        });
    }

    // Toast notifications
    showToast(message, type = 'info') {
        const container = document.getElementById('toast-container');
        if (!container) return;

        const toast = document.createElement('div');
        toast.className = `toast ${type}`;
        toast.textContent = message;
        container.appendChild(toast);

        setTimeout(() => {
            toast.remove();
        }, 3000);
    }

    // PWA Install Prompt
    checkInstallPrompt() {
        let deferredPrompt;

        window.addEventListener('beforeinstallprompt', (e) => {
            e.preventDefault();
            deferredPrompt = e;
            this.showInstallBanner(deferredPrompt);
        });
    }

    showInstallBanner(deferredPrompt) {
        const banner = document.createElement('div');
        banner.className = 'install-banner';
        banner.innerHTML = `
            <span>Install MacroPad for quick access</span>
            <div>
                <button onclick="app.installPWA()">Install</button>
                <button class="dismiss" onclick="this.parentElement.parentElement.remove()">X</button>
            </div>
        `;
        document.body.insertBefore(banner, document.body.firstChild);
        this.deferredPrompt = deferredPrompt;
    }

    async installPWA() {
        if (!this.deferredPrompt) return;

        this.deferredPrompt.prompt();
        const { outcome } = await this.deferredPrompt.userChoice;

        if (outcome === 'accepted') {
            document.querySelector('.install-banner')?.remove();
        }

        this.deferredPrompt = null;
    }

    // Refresh
    refresh() {
        this.loadTabs();
        this.loadMacros();
    }
}

// Initialize app
let app;
document.addEventListener('DOMContentLoaded', () => {
    app = new MacroPadApp();
});

// Register service worker
if ('serviceWorker' in navigator) {
    window.addEventListener('load', () => {
        navigator.serviceWorker.register('/service-worker.js')
            .then((registration) => {
                console.log('SW registered:', registration.scope);
            })
            .catch((error) => {
                console.log('SW registration failed:', error);
            });
    });
}