setup.sql

-- Create Database
CREATE DATABASE IF NOT EXISTS notice_system;
USE notice_system;

-- Users Table
CREATE TABLE IF NOT EXISTS users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL UNIQUE,
    password VARCHAR(255) NOT NULL,
    role ENUM('super_admin', 'admin', 'teacher', 'student') NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Notices Table
CREATE TABLE IF NOT EXISTS notices (
    id INT AUTO_INCREMENT PRIMARY KEY,
    title VARCHAR(255) NOT NULL,
    content TEXT NOT NULL,
    created_by INT NOT NULL,
    status ENUM(
        'pending_admin', 
        'admin_approved', 
        'admin_rejected', 
        'teacher_published', 
        'teacher_rejected'
    ) DEFAULT 'pending_admin',
    rejection_reason TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE CASCADE
);

-- Notice Logs Table (Audit Trail)
CREATE TABLE IF NOT EXISTS notice_logs (
    id INT AUTO_INCREMENT PRIMARY KEY,
    notice_id INT NOT NULL,
    performed_by INT NOT NULL,
    role ENUM('super_admin', 'admin', 'teacher', 'student') NOT NULL,
    action VARCHAR(50) NOT NULL, -- e.g., 'notice_created', 'admin_approved'
    old_status VARCHAR(50),
    new_status VARCHAR(50),
    details TEXT, -- For rejection reasons or other notes
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (notice_id) REFERENCES notices(id) ON DELETE CASCADE,
    FOREIGN KEY (performed_by) REFERENCES users(id) ON DELETE CASCADE
);

-- Notifications Table
CREATE TABLE IF NOT EXISTS notifications (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    message TEXT NOT NULL,
    is_read BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);

-- Read Receipts Table (For Students)
CREATE TABLE IF NOT EXISTS read_receipts (
    id INT AUTO_INCREMENT PRIMARY KEY,
    notice_id INT NOT NULL,
    student_id INT NOT NULL,
    viewed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (notice_id) REFERENCES notices(id) ON DELETE CASCADE,
    FOREIGN KEY (student_id) REFERENCES users(id) ON DELETE CASCADE,
    UNIQUE(notice_id, student_id) -- Ensure one record per student per notice
);

-- Insert Default Users (Password: password123)
-- Hash: $2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi
INSERT INTO users (username, password, role) VALUES 
('superadmin', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'super_admin'),
('admin', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'admin'),
('teacher', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'teacher'),
('student', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'student');