database.sql

-- CREATE DATABASE IF NOT EXISTS project_management_system;
-- USE project_management_system;

CREATE TABLE users (
    id INT PRIMARY KEY AUTO_INCREMENT,
    username VARCHAR(50) UNIQUE NOT NULL,
    email VARCHAR(100) UNIQUE NOT NULL,
    password VARCHAR(255) NOT NULL,
    full_name VARCHAR(100) NOT NULL,
    role ENUM('admin', 'manager', 'user') DEFAULT 'user',
    status ENUM('active', 'inactive') DEFAULT 'active',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

CREATE TABLE projects (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_name VARCHAR(200) NOT NULL,
    project_code VARCHAR(50) UNIQUE NOT NULL,
    description TEXT,
    client_name VARCHAR(100),
    start_date DATE,
    end_date DATE,
    status ENUM('planning', 'in_progress', 'on_hold', 'completed', 'cancelled') DEFAULT 'planning',
    priority ENUM('low', 'medium', 'high', 'critical') DEFAULT 'medium',
    budget DECIMAL(15,2),
    created_by INT,
    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 SET NULL
);

CREATE TABLE project_members (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_id INT NOT NULL,
    user_id INT NOT NULL,
    role ENUM('lead', 'member', 'viewer') DEFAULT 'member',
    assigned_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
    UNIQUE KEY unique_member (project_id, user_id)
);

CREATE TABLE requirements (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_id INT NOT NULL,
    requirement_title VARCHAR(200) NOT NULL,
    description TEXT,
    type ENUM('functional', 'non_functional', 'technical', 'business') DEFAULT 'functional',
    priority ENUM('low', 'medium', 'high', 'critical') DEFAULT 'medium',
    status ENUM('pending', 'approved', 'in_progress', 'completed', 'rejected') DEFAULT 'pending',
    created_by INT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE,
    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE SET NULL
);

CREATE TABLE project_phases (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_id INT NOT NULL,
    phase_name VARCHAR(100) NOT NULL,
    description TEXT,
    start_date DATE,
    end_date DATE,
    status ENUM('not_started', 'in_progress', 'completed', 'delayed') DEFAULT 'not_started',
    progress INT DEFAULT 0,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE
);

CREATE TABLE tasks (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_id INT NOT NULL,
    phase_id INT,
    task_name VARCHAR(200) NOT NULL,
    description TEXT,
    assigned_to INT,
    status ENUM('todo', 'in_progress', 'review', 'completed') DEFAULT 'todo',
    priority ENUM('low', 'medium', 'high', 'critical') DEFAULT 'medium',
    due_date DATE,
    estimated_hours DECIMAL(5,2),
    actual_hours DECIMAL(5,2),
    created_by INT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE,
    FOREIGN KEY (phase_id) REFERENCES project_phases(id) ON DELETE SET NULL,
    FOREIGN KEY (assigned_to) REFERENCES users(id) ON DELETE SET NULL,
    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE SET NULL
);

CREATE TABLE pricing (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_id INT NOT NULL,
    item_name VARCHAR(200) NOT NULL,
    description TEXT,
    category VARCHAR(100),
    unit_price DECIMAL(15,2) NOT NULL,
    quantity INT DEFAULT 1,
    total_price DECIMAL(15,2) GENERATED ALWAYS AS (unit_price * quantity) STORED,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE
);

CREATE TABLE project_documents (
    id INT PRIMARY KEY AUTO_INCREMENT,
    project_id INT NOT NULL,
    document_name VARCHAR(200) NOT NULL,
    file_path VARCHAR(500),
    file_type VARCHAR(50),
    file_size INT,
    uploaded_by INT,
    uploaded_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE,
    FOREIGN KEY (uploaded_by) REFERENCES users(id) ON DELETE SET NULL
);

CREATE TABLE activity_log (
    id INT PRIMARY KEY AUTO_INCREMENT,
    user_id INT,
    project_id INT,
    action VARCHAR(100) NOT NULL,
    description TEXT,
    ip_address VARCHAR(45),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE SET NULL,
    FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE
);

INSERT INTO users (username, email, password, full_name, role) VALUES 
('admin', 'admin@projectmgmt.com', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'System Admin', 'admin');