// app/actions/auth.js
'use server'

import { queryOne, run } from '../../lib/db';
import bcrypt from 'bcryptjs';

// Register a new user
export async function registerUser(formData) {
    try {
        const username = formData.get('username');
        const password = formData.get('password');

        // Check if user already exists
        const existingUser = await queryOne(
            'SELECT * FROM users WHERE username = ?',
            [username]
        );

        if (existingUser) {
            return { success: false, error: 'Username already exists' };
        }

        // Hash the password
        const hashedPassword = await bcrypt.hash(password, 10);

        // Insert the new user
        const result = await run(
            'INSERT INTO users (username, password, role) VALUES (?, ?, ?)',
            [username, hashedPassword, 'user']
        );

        return {
            success: true,
            userId: result.lastID
        };
    } catch (error) {
        console.error('Registration error:', error);
        return {
            success: false,
            error: 'Registration failed: ' + error.message
        };
    }
}

// Login function (to be used with NextAuth)
export async function validateCredentials(username, password) {
    try {
        const user = await queryOne(
            'SELECT * FROM users WHERE username = ?',
            [username]
        );

        if (!user) {
            return null;
        }

        const isValid = await bcrypt.compare(password, user.password);

        if (!isValid) {
            return null;
        }

        return {
            id: user.id,
            username: user.username,
            role: user.role
        };
    } catch (error) {
        console.error('Login error:', error);
        return null;
    }
}

// Start hunt timer (admin only)
export async function startHuntTimer(active) {
    try {
        // First check if a record exists
        const currentTimer = await queryOne('SELECT * FROM game_settings WHERE id = 1');

        if (currentTimer) {
            // Update existing record
            await run(
                'UPDATE game_settings SET hunt_active = ?, updated_at = CURRENT_TIMESTAMP WHERE id = 1',
                [active ? 1 : 0]
            );
        } else {
            // Create new record
            await run(
                'INSERT INTO game_settings (id, hunt_active, created_at, updated_at) VALUES (1, ?, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)',
                [active ? 1 : 0]
            );
        }

        return { success: true };
    } catch (error) {
        console.error('Timer update error:', error);
        return { success: false, error: error.message };
    }
}

// Get hunt timer status
export async function getHuntStatus() {
    try {
        const settings = await queryOne('SELECT * FROM game_settings WHERE id = 1');
        return {
            active: settings?.hunt_active === 1,
            updatedAt: settings?.updated_at
        };
    } catch (error) {
        console.error('Get hunt status error:', error);
        return { active: false };
    }
}

// Join a team
export async function joinTeam(userId, teamCode) {
    try {
        // Find the team by code
        const team = await queryOne('SELECT * FROM teams WHERE code = ?', [teamCode]);

        if (!team) {
            return { success: false, error: 'Team not found' };
        }

        // Update user's team
        await run(
            'UPDATE users SET team_id = ? WHERE id = ?',
            [team.id, userId]
        );

        return {
            success: true,
            teamId: team.id,
            teamName: team.name
        };
    } catch (error) {
        console.error('Join team error:', error);
        return { success: false, error: error.message };
    }
}