-- Work Allocation System Database Schema
-- This version is for Docker init (database already created by environment variables)

-- Departments table
CREATE TABLE IF NOT EXISTS 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 IF NOT EXISTS 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 IF NOT EXISTS 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 (rates per contractor + sub-department combination)
CREATE TABLE IF NOT EXISTS contractor_rates (
    id INT PRIMARY KEY AUTO_INCREMENT,
    contractor_id INT NOT NULL,
    sub_department_id INT,
    activity VARCHAR(200),
    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,
    FOREIGN KEY (sub_department_id) REFERENCES sub_departments(id) ON DELETE SET NULL
);

-- Work allocations table
CREATE TABLE IF NOT EXISTS 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,
    activity VARCHAR(100),
    description TEXT,
    assigned_date DATE NOT NULL,
    status ENUM('Pending', 'InProgress', 'Completed', 'Cancelled') DEFAULT 'Pending',
    completion_date DATE,
    rate DECIMAL(10, 2),
    units DECIMAL(10, 2),
    total_amount 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 IF NOT EXISTS 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 IGNORE INTO departments (name) VALUES 
    ('Tudki'),
    ('Dana'),
    ('Groundnut');

-- Insert Groundnut sub-departments
INSERT IGNORE 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';

-- Note: Admin user will be created by running: npm run seed
-- This ensures the password is properly hashed with bcrypt