CREATE TABLE IF NOT EXISTS migrations (
    id INT AUTO_INCREMENT PRIMARY KEY,
    migration_name VARCHAR(255) NOT NULL UNIQUE,
    executed_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS donors (
    id INT AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(255) NOT NULL,
    email VARCHAR(255) NOT NULL UNIQUE,
    phone VARCHAR(50),
    blood_type VARCHAR(10),
    organs_to_donate TEXT,
    medical_history TEXT,
    registration_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    status VARCHAR(50) DEFAULT 'pending_verification',
    password_hash VARCHAR(255) NOT NULL
);

CREATE TABLE IF NOT EXISTS hospitals (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    email VARCHAR(255) NOT NULL UNIQUE,
    phone VARCHAR(255),
    address TEXT,
    password VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    status VARCHAR(50) DEFAULT 'pending' -- pending, approved, rejected
);

CREATE TABLE IF NOT EXISTS sessions (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    user_type VARCHAR(50) NOT NULL, -- 'hospital', 'donor', 'admin'
    token VARCHAR(255) NOT NULL UNIQUE,
    expires_at DATETIME NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS recipients (
    id INT AUTO_INCREMENT PRIMARY KEY,
    hospital_id INT NOT NULL,
    name VARCHAR(255) NOT NULL,
    blood_type VARCHAR(10) NOT NULL,
    organ VARCHAR(50) NOT NULL,
    urgency INT NOT NULL, -- 1-10 scale
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (hospital_id) REFERENCES hospitals(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS admins (
    id INT AUTO_INCREMENT PRIMARY KEY,
    email VARCHAR(255) NOT NULL UNIQUE,
    password VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Add a default admin user
INSERT INTO admins (email, password) VALUES ('admin@email.com', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi'); -- password

CREATE TABLE IF NOT EXISTS matches (
    id INT AUTO_INCREMENT PRIMARY KEY,
    donor_id INT NOT NULL,
    recipient_id INT NOT NULL,
    status VARCHAR(50) DEFAULT 'pending', -- pending, approved, rejected
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (donor_id) REFERENCES donors(id) ON DELETE CASCADE,
    FOREIGN KEY (recipient_id) REFERENCES recipients(id) ON DELETE CASCADE
);