import inquirer from 'inquirer';
import { ProjectManager, ProjectConfig } from './project-manager.js';
import chalk from 'chalk';

interface ProjectSelectionAnswers {
    selectedProject: string;
}

interface NewProjectAnswers {
    projectName: string;
    userName: string;
    userEmail: string;
}

export class CliPrompts {
    private projectManager: ProjectManager;

    constructor() {
        this.projectManager = new ProjectManager();
    }

    public async selectOrCreateProject(): Promise<ProjectConfig> {
        const projects = this.projectManager.getProjects();
        
        console.log(chalk.blue.bold('\n🚇 StateZero Project Manager\n'));

        if (projects.length === 0) {
            console.log(chalk.yellow('No projects found. Let\'s create your first project!\n'));
            return await this.createNewProject();
        }

        const choices = [
            ...projects.map(p => ({
                name: `${chalk.green(p.name)} ${chalk.gray(`(${p.subdomain}.tunnels.statezero.dev)`)}`,
                value: p.id,
                short: p.name
            })),
            new inquirer.Separator(),
            {
                name: chalk.cyan('+ Create new project'),
                value: 'new',
                short: 'New project'
            }
        ];

        const answers: ProjectSelectionAnswers = await inquirer.prompt([
            {
                type: 'list',
                name: 'selectedProject',
                message: 'Select a project:',
                choices,
                pageSize: 10
            }
        ]);

        if (answers.selectedProject === 'new') {
            return await this.createNewProject();
        }

        const project = projects.find(p => p.id === answers.selectedProject);
        if (!project) {
            throw new Error('Selected project not found');
        }

        this.projectManager.updateLastUsed(project.id);
        return project;
    }

    private async createNewProject(): Promise<ProjectConfig> {
        console.log(chalk.yellow('\n📝 Create New Project\n'));

        // Get project name first
        const projectNameAnswer = await inquirer.prompt([
            {
                type: 'input',
                name: 'projectName',
                message: 'Project name:',
                validate: (input: string) => {
                    if (!input.trim()) return 'Project name is required';
                    if (input.length < 2) return 'Project name must be at least 2 characters';
                    if (input.length > 30) return 'Project name must be less than 30 characters';
                    // Check for duplicate names
                    const existing = this.projectManager.getProjects();
                    if (existing.some(p => p.name.toLowerCase() === input.toLowerCase())) {
                        return 'A project with this name already exists';
                    }
                    return true;
                }
            }
        ]);

        // Get user details
        const userDetailsAnswer = await inquirer.prompt([
            {
                type: 'input',
                name: 'userName',
                message: 'Your name:',
                validate: (input: string) => input.trim() ? true : 'Name is required'
            },
            {
                type: 'input',
                name: 'userEmail',
                message: 'Your email:',
                validate: (input: string) => {
                    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
                    return emailRegex.test(input) ? true : 'Please enter a valid email address';
                }
            }
        ]);

        const project = this.projectManager.createProject(
            projectNameAnswer.projectName,
            userDetailsAnswer.userEmail,
            userDetailsAnswer.userName
        );

        console.log(chalk.green(`\n✅ Project "${project.name}" created!`));
        console.log(chalk.blue(`🌐 Your subdomain: ${project.subdomain}.tunnels.statezero.dev\n`));
        
        return project;
    }

    public getProjectManager(): ProjectManager {
        return this.projectManager;
    }
}