-- Work Allocation System Database Schema

-- Create database
CREATE DATABASE IF NOT EXISTS work_allocation;
USE work_allocation;

-- Departments table
CREATE TABLE departments (
    id INT PRIMARY KEY AUTO_INCREMENT,
    name VARCHAR(100) NOT NULL UNIQUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

-- Sub-departments table (for Groundnut department)
CREATE TABLE sub_departments (
    id INT PRIMARY KEY AUTO_INCREMENT,
    department_id INT NOT NULL,
    name VARCHAR(200) NOT NULL,
    primary_activity VARCHAR(200) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (department_id) REFERENCES departments(id) ON DELETE CASCADE
);

-- Users table (for all roles: SuperAdmin, Supervisor, Contractor, Employee)
CREATE TABLE users (
    id INT PRIMARY KEY AUTO_INCREMENT,
    username VARCHAR(100) NOT NULL UNIQUE,
    name VARCHAR(200) NOT NULL,
    email VARCHAR(200) NOT NULL UNIQUE,
    password VARCHAR(255) NOT NULL,
    role ENUM('SuperAdmin', 'Supervisor', 'Contractor', 'Employee') NOT NULL,
    department_id INT,
    contractor_id INT,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (department_id) REFERENCES departments(id) ON DELETE SET NULL,
    FOREIGN KEY (contractor_id) REFERENCES users(id) ON DELETE SET NULL
);

-- Contractor rates table
CREATE TABLE contractor_rates (
    id INT PRIMARY KEY AUTO_INCREMENT,
    contractor_id INT NOT NULL,
    rate DECIMAL(10, 2) NOT NULL,
    effective_date DATE NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (contractor_id) REFERENCES users(id) ON DELETE CASCADE
);

-- Work allocations table
CREATE TABLE work_allocations (
    id INT PRIMARY KEY AUTO_INCREMENT,
    employee_id INT NOT NULL,
    supervisor_id INT NOT NULL,
    contractor_id INT NOT NULL,
    sub_department_id INT,
    description TEXT,
    assigned_date DATE NOT NULL,
    status ENUM('Pending', 'InProgress', 'Completed', 'Cancelled') DEFAULT 'Pending',
    completion_date DATE,
    rate DECIMAL(10, 2),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (employee_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (supervisor_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (contractor_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (sub_department_id) REFERENCES sub_departments(id) ON DELETE SET NULL
);

-- Attendance table
CREATE TABLE attendance (
    id INT PRIMARY KEY AUTO_INCREMENT,
    employee_id INT NOT NULL,
    supervisor_id INT NOT NULL,
    check_in_time DATETIME NOT NULL,
    check_out_time DATETIME,
    work_date DATE NOT NULL,
    status ENUM('CheckedIn', 'CheckedOut') DEFAULT 'CheckedIn',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (employee_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (supervisor_id) REFERENCES users(id) ON DELETE CASCADE
);

-- Insert default departments
INSERT INTO departments (name) VALUES 
    ('Tudki'),
    ('Dana'),
    ('Groundnut');

-- Insert Groundnut sub-departments
INSERT INTO sub_departments (department_id, name, primary_activity) 
SELECT id, 'Mufali Aavak Katai', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Mufali Aavak Dhang', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Dhang Se Katai', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Guthli Bori Silai Dhang', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Guthali dada Pala Tulai Silai Dhang', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Mufali Patthar Bori silai dhang', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Mufali Patthar Bori Utrai', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Bardana Bandal Loading Unloading', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Bardana Gatthi Loading', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Black Dana Loading/Unloading', 'Loading/Unloading' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Pre Cleaning', 'Pre Cleaning' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Destoner', 'Destoner' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Water', 'Water' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Decordicater', 'Decordicater & Cleaning' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Round Chalna', 'Round Chalna & Cleaning' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Cleaning', 'Decordicater & Cleaning' FROM departments WHERE name = 'Groundnut'
UNION ALL
SELECT id, 'Round Chalna No.1', 'Round Chalna No.1' FROM departments WHERE name = 'Groundnut';

-- Insert default SuperAdmin (password: admin123)
-- Password is hashed using bcrypt: $2a$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi
INSERT INTO users (username, name, email, password, role) VALUES 
    ('admin', 'Super Admin', 'admin@workallocate.com', '$2a$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi', 'SuperAdmin');