database_fixed.sql

-- UniShare Database Schema (Fixed)
CREATE DATABASE IF NOT EXISTS unishare;
USE unishare;

-- Users table
CREATE TABLE IF NOT EXISTS users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL,
    family_name VARCHAR(50) DEFAULT '',
    email VARCHAR(100) UNIQUE NOT NULL,
    password VARCHAR(255) NOT NULL,
    specialty VARCHAR(100) DEFAULT '',
    academic_level VARCHAR(10) DEFAULT 'L1',
    profile_photo VARCHAR(255) DEFAULT 'default_avatar.png',
    role ENUM('user', 'admin') DEFAULT 'user',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    last_login TIMESTAMP NULL,
    INDEX idx_email (email),
    INDEX idx_role (role)
);

-- Categories table (fixed - removed description column if it doesn't exist)
CREATE TABLE IF NOT EXISTS categories (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(50) NOT NULL,
    slug VARCHAR(50) UNIQUE NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Posts table
CREATE TABLE IF NOT EXISTS posts (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    title VARCHAR(255) NOT NULL,
    content TEXT NOT NULL,
    category_id INT NULL,
    specialty VARCHAR(100) DEFAULT '',
    academic_level VARCHAR(10) DEFAULT '',
    image_path VARCHAR(255) NULL,
    file_path VARCHAR(255) NULL,
    file_name VARCHAR(255) NULL,
    likes INT DEFAULT 0,
    views INT DEFAULT 0,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (category_id) REFERENCES categories(id) ON DELETE SET NULL,
    INDEX idx_user (user_id),
    INDEX idx_created (created_at),
    INDEX idx_specialty (specialty)
);

-- Comments table
CREATE TABLE IF NOT EXISTS comments (
    id INT AUTO_INCREMENT PRIMARY KEY,
    post_id INT NOT NULL,
    user_id INT NOT NULL,
    content TEXT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (post_id) REFERENCES posts(id) ON DELETE CASCADE,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
    INDEX idx_post (post_id),
    INDEX idx_user (user_id)
);

-- Favorites table
CREATE TABLE IF NOT EXISTS favorites (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    post_id INT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY unique_favorite (user_id, post_id),
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (post_id) REFERENCES posts(id) ON DELETE CASCADE,
    INDEX idx_user (user_id),
    INDEX idx_post (post_id)
);

-- Sessions table for persistent token-based authentication
CREATE TABLE IF NOT EXISTS sessions (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    token VARCHAR(255) UNIQUE NOT NULL,
    expires_at TIMESTAMP NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
    INDEX idx_token (token),
    INDEX idx_user (user_id),
    INDEX idx_expires (expires_at)
);

-- Insert default categories (without description)
INSERT INTO categories (name, slug) VALUES
('Lecture Notes', 'lecture-notes'),
('Exam Schedules', 'exam-schedules'),
('Solutions', 'solutions'),
('Projects', 'projects'),
('Study Tips', 'study-tips'),
('Resources', 'resources');

-- Create test user (password: test123)
INSERT INTO users (username, family_name, email, password, specialty, academic_level, role) 
VALUES ('TestUser', 'Test', 'test@test.com', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'Computer Science', 'L3', 'user');

-- Create admin user (password: admin123)
INSERT INTO users (username, family_name, email, password, specialty, academic_level, role) 
VALUES ('Admin', 'UniShare', 'admin@unishare.com', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'Administration', 'M2', 'admin');

-- Create a second test user
INSERT INTO users (username, family_name, email, password, specialty, academic_level, role) 
VALUES ('Student', 'User', 'student@unishare.com', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'Physics', 'L2', 'user');

-- Show success message
SELECT 'Database setup completed successfully!' as Status;
SELECT COUNT(*) as TotalUsers FROM users;
SELECT COUNT(*) as TotalCategories FROM categories;