/**
 * File Tree Actions Manager
 * Centralized handling of all tree operations
 */

class FileTreeActions {
    constructor(webdavClient, fileTree, editor) {
        this.webdavClient = webdavClient;
        this.fileTree = fileTree;
        this.editor = editor;
        this.clipboard = null;
    }

    async execute(action, targetPath, isDirectory) {
        const handler = this.actions[action];
        if (!handler) {
            console.error(`Unknown action: ${action}`);
            return;
        }
        
        try {
            await handler.call(this, targetPath, isDirectory);
        } catch (error) {
            console.error(`Action failed: ${action}`, error);
            showNotification(`Failed to ${action}`, 'error');
        }
    }

    actions = {
        open: async function(path, isDir) {
            if (!isDir) {
                await this.editor.loadFile(path);
            }
        },

        newFile: async function(path, isDir) {
            if (!isDir) return;
            
            const filename = await this.showInputDialog('Enter filename:', 'new-file.md');
            if (filename) {
                const fullPath = `${path}/${filename}`.replace(/\/+/g, '/');
                await this.webdavClient.put(fullPath, '# New File\n\n');
                await this.fileTree.load();
                showNotification(`Created ${filename}`, 'success');
            }
        },

        newFolder: async function(path, isDir) {
            if (!isDir) return;
            
            const foldername = await this.showInputDialog('Enter folder name:', 'new-folder');
            if (foldername) {
                const fullPath = `${path}/${foldername}`.replace(/\/+/g, '/');
                await this.webdavClient.mkcol(fullPath);
                await this.fileTree.load();
                showNotification(`Created folder ${foldername}`, 'success');
            }
        },

        rename: async function(path, isDir) {
            const oldName = path.split('/').pop();
            const newName = await this.showInputDialog('Rename to:', oldName);
            
            if (newName && newName !== oldName) {
                const parentPath = path.substring(0, path.lastIndexOf('/'));
                const newPath = parentPath ? `${parentPath}/${newName}` : newName;
                
                await this.webdavClient.move(path, newPath);
                await this.fileTree.load();
                showNotification('Renamed', 'success');
            }
        },

        copy: async function(path, isDir) {
            this.clipboard = { path, operation: 'copy', isDirectory: isDir };
            showNotification(`Copied: ${path.split('/').pop()}`, 'info');
            this.updatePasteMenuItem();
        },

        cut: async function(path, isDir) {
            this.clipboard = { path, operation: 'cut', isDirectory: isDir };
            showNotification(`Cut: ${path.split('/').pop()}`, 'warning');
            this.updatePasteMenuItem();
        },

        paste: async function(targetPath, isDir) {
            if (!this.clipboard || !isDir) return;
            
            const itemName = this.clipboard.path.split('/').pop();
            const destPath = `${targetPath}/${itemName}`.replace(/\/+/g, '/');
            
            if (this.clipboard.operation === 'copy') {
                await this.webdavClient.copy(this.clipboard.path, destPath);
                showNotification('Copied', 'success');
            } else {
                await this.webdavClient.move(this.clipboard.path, destPath);
                this.clipboard = null;
                this.updatePasteMenuItem();
                showNotification('Moved', 'success');
            }
            
            await this.fileTree.load();
        },

        delete: async function(path, isDir) {
            const name = path.split('/').pop();
            const type = isDir ? 'folder' : 'file';
            
            if (!await this.showConfirmDialog(`Delete this ${type}?`, `${name}`)) {
                return;
            }
            
            await this.webdavClient.delete(path);
            await this.fileTree.load();
            showNotification(`Deleted ${name}`, 'success');
        },

        download: async function(path, isDir) {
            showNotification('Downloading...', 'info');
            // Implementation here
        },

        upload: async function(path, isDir) {
            if (!isDir) return;
            
            const input = document.createElement('input');
            input.type = 'file';
            input.multiple = true;
            
            input.onchange = async (e) => {
                const files = Array.from(e.target.files);
                for (const file of files) {
                    const fullPath = `${path}/${file.name}`.replace(/\/+/g, '/');
                    const content = await file.arrayBuffer();
                    await this.webdavClient.putBinary(fullPath, content);
                    showNotification(`Uploaded ${file.name}`, 'success');
                }
                await this.fileTree.load();
            };
            
            input.click();
        }
    };

    // Modern dialog implementations
    async showInputDialog(title, placeholder = '') {
        return new Promise((resolve) => {
            const dialog = this.createInputDialog(title, placeholder);
            const input = dialog.querySelector('input');
            const confirmBtn = dialog.querySelector('.btn-primary');
            const cancelBtn = dialog.querySelector('.btn-secondary');
            
            const cleanup = () => {
                dialog.remove();
                document.body.classList.remove('modal-open');
            };
            
            confirmBtn.onclick = () => {
                resolve(input.value.trim());
                cleanup();
            };
            
            cancelBtn.onclick = () => {
                resolve(null);
                cleanup();
            };
            
            input.onkeypress = (e) => {
                if (e.key === 'Enter') confirmBtn.click();
                if (e.key === 'Escape') cancelBtn.click();
            };
            
            document.body.appendChild(dialog);
            document.body.classList.add('modal-open');
            input.focus();
            input.select();
        });
    }

    async showConfirmDialog(title, message = '') {
        return new Promise((resolve) => {
            const dialog = this.createConfirmDialog(title, message);
            const confirmBtn = dialog.querySelector('.btn-danger');
            const cancelBtn = dialog.querySelector('.btn-secondary');
            
            const cleanup = () => {
                dialog.remove();
                document.body.classList.remove('modal-open');
            };
            
            confirmBtn.onclick = () => {
                resolve(true);
                cleanup();
            };
            
            cancelBtn.onclick = () => {
                resolve(false);
                cleanup();
            };
            
            document.body.appendChild(dialog);
            document.body.classList.add('modal-open');
            confirmBtn.focus();
        });
    }

    createInputDialog(title, placeholder) {
        const backdrop = document.createElement('div');
        backdrop.className = 'modal-backdrop fade show';
        
        const dialog = document.createElement('div');
        dialog.className = 'modal fade show d-block';
        dialog.setAttribute('tabindex', '-1');
        dialog.style.display = 'block';
        
        dialog.innerHTML = `
            <div class="modal-dialog modal-dialog-centered">
                <div class="modal-content">
                    <div class="modal-header">
                        <h5 class="modal-title">${title}</h5>
                        <button type="button" class="btn-close"></button>
                    </div>
                    <div class="modal-body">
                        <input type="text" class="form-control" placeholder="${placeholder}" autofocus>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary">Cancel</button>
                        <button type="button" class="btn btn-primary">OK</button>
                    </div>
                </div>
            </div>
        `;
        
        document.body.appendChild(backdrop);
        return dialog;
    }

    createConfirmDialog(title, message) {
        const backdrop = document.createElement('div');
        backdrop.className = 'modal-backdrop fade show';
        
        const dialog = document.createElement('div');
        dialog.className = 'modal fade show d-block';
        dialog.setAttribute('tabindex', '-1');
        dialog.style.display = 'block';
        
        dialog.innerHTML = `
            <div class="modal-dialog modal-dialog-centered">
                <div class="modal-content">
                    <div class="modal-header border-danger">
                        <h5 class="modal-title text-danger">${title}</h5>
                        <button type="button" class="btn-close"></button>
                    </div>
                    <div class="modal-body">
                        <p>${message}</p>
                        <p class="text-danger small">This action cannot be undone.</p>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary">Cancel</button>
                        <button type="button" class="btn btn-danger">Delete</button>
                    </div>
                </div>
            </div>
        `;
        
        document.body.appendChild(backdrop);
        return dialog;
    }

    updatePasteMenuItem() {
        const pasteItem = document.getElementById('pasteMenuItem');
        if (pasteItem) {
            pasteItem.style.display = this.clipboard ? 'flex' : 'none';
        }
    }
}