import gradio as gr
import json
from datetime import datetime
from patient_registration import register_patient
from test_selection import select_tests, get_tests_by_category
from billing import fetch_billing

# Load data
def load_data():
    try:
        with open("data.json", "r") as file:
            data = json.load(file)
            return data.get("patients", {}), data.get("last_sequence", {"year": None, "month": None, "number": 0})
    except FileNotFoundError:
        return {}, {"year": None, "month": None, "number": 0}

# Save data
def save_data(patients, last_sequence):
    with open("data.json", "w") as file:
        json.dump({"patients": patients, "last_sequence": last_sequence}, file)

# Generate patient ID
def generate_patient_id(phone, last_sequence):
    today = datetime.now()
    current_year = today.year
    current_month = today.month
    
    # Check if year or month has changed
    if last_sequence["year"] != current_year or last_sequence["month"] != current_month:
        # Reset sequence for new year/month
        last_sequence["year"] = current_year
        last_sequence["month"] = current_month
        last_sequence["number"] = 1
    else:
        # Increment sequence number
        last_sequence["number"] += 1
    
    # Format patient ID
    patient_id = f"{current_year}{current_month:02d}{last_sequence['number']:05d}"
    return patient_id

# Patient Registration Tab
def registration_interface(name, father_name, age, phone, address, pincode):
    patients, last_sequence = load_data()
    
    # Generate patient ID
    patient_id = generate_patient_id(phone, last_sequence)
    
    # Add patient details to data
    patients[patient_id] = {
        "name": name,
        "father_name": father_name,
        "age": age,
        "phone": phone,
        "address": address,
        "pincode": pincode,
        "tests": [],
        "total_cost": 0
    }
    
    # Save data and updated sequence
    save_data(patients, last_sequence)
    return f"Patient Registered. Patient ID: {patient_id}"

# Tests Selection Tab
def test_interface(categories):
    available_tests = get_tests_by_category(categories)
    return gr.update(choices=available_tests)  # Update dropdown with available tests

def confirm_tests_interface(patient_id, selected_tests):
    patients, last_sequence = load_data()  # Load both patients and last_sequence
    response = select_tests(patient_id, selected_tests, patients)  # Update patients directly
    save_data(patients, last_sequence)  # Save both patients and last_sequence
    return response

# Billing Tab
def billing_interface(patient_id):
    patients, _ = load_data()  # Load patients and ignore last_sequence
    if patient_id in patients:
        billing_info = fetch_billing(patient_id, patients)
        return billing_info
    else:
        return "Invalid Patient ID. Please check the ID."

# Gradio Interface
with gr.Blocks() as app:
    gr.Markdown("<h1 style='text-align: center;'>Sathkrutha LIMS</h1>", elem_id="header")

    with gr.Tab("Patient Registration"):
        with gr.Row():
            name = gr.Textbox(label="Patient Name", placeholder="Enter patient name", elem_id="name_field", lines=1)
            father_name = gr.Textbox(label="Father/Husband Name", placeholder="Enter father or husband name", elem_id="father_name_field", lines=1)
        with gr.Row():
            age = gr.Number(label="Age", value=None, minimum=0, maximum=99, elem_id="age_field")
            phone = gr.Number(label="Phone Number", value=None, elem_id="phone_field")
        with gr.Row():
            address = gr.Textbox(label="Address", placeholder="Enter address", lines=2)
            pincode = gr.Number(label="Pincode", value=None, elem_id="pincode_field")
        register_button = gr.Button("Register Patient")
        registration_output = gr.Textbox(label="Registration Output")

        register_button.click(registration_interface, [name, father_name, age, phone, address, pincode], registration_output)

    with gr.Tab("Tests"):
        patient_id_test = gr.Textbox(label="Patient ID")
        categories = gr.CheckboxGroup(
            ["Haematology", "Clinical Pathology", "Biochemistry", "Microbiology", "Specific Diseases", "Serology", "Radiology", "Other Diagnostic Tests"],
            label="Select Test Categories"
        )
        available_tests = gr.CheckboxGroup(label="Available Tests")
        confirm_button = gr.Button("Confirm Tests")
        test_output = gr.Textbox(label="Test Selection Output")

        categories.change(test_interface, inputs=categories, outputs=available_tests)  # Update available tests based on selected categories
        confirm_button.click(confirm_tests_interface, [patient_id_test, available_tests], test_output)

    with gr.Tab("Billing"):
        patient_id_bill = gr.Textbox(label="Patient ID")
        fetch_button = gr.Button("Fetch Billing")
        billing_output = gr.Textbox(label="Billing Information")
        fetch_button.click(billing_interface, [patient_id_bill], billing_output)

# Custom CSS styling
app.css = """
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

body {
    font-family: 'Poppins', Arial, sans-serif;
    background: linear-gradient(to bottom right, #1e3c72, #2a5298);
    color: #e0f7fa;
    margin: 0;
    padding: 0;
}

#header {
    color: #fbc02d;
    text-align: center;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 2.5em;
    margin-bottom: 25px;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.3);
}

.gradio-container {
    max-width: 850px;
    margin: 30px auto;
    padding: 30px;
    background: rgba(30, 30, 30, 0.9);
    border-radius: 15px;
    box-shadow: 0px 10px 40px rgba(0, 0, 0, 0.6);
    color: #ffffff;
}

#name_field, #father_name_field, #age_field, #phone_field, #address_field, #pincode_field, textarea {
    max-width: 700px;
    border: 1px solid #444;
    border-radius: 8px;
    padding: 12px;
    background: rgba(245, 245, 245, 0.85);
    color: #2d2d2d;
    font-size: 15px;
    margin-bottom: 15px;
    transition: border 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

#name_field:focus, #father_name_field:focus, #age_field:focus, #phone_field:focus, #address_field:focus, #pincode_field:focus, textarea:focus {
    border-color: #ffd54f;
    box-shadow: 0 0 10px rgba(255, 213, 79, 0.7);
    transform: scale(1.02);
}

textarea {
    font-size: 15px;
    color: #2d2d2d;
    background: rgba(245, 245, 245, 0.9);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #444;
    transition: all 0.3s ease;
}

.gr-button {
    color: #ffffff;
    background: linear-gradient(to right, #4a90e2, #007aff);
    border: none;
    border-radius: 10px;
    padding: 12px 30px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    transition: background 0.3s ease, transform 0.2s, box-shadow 0.3s ease;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.gr-button:hover {
    background: linear-gradient(to right, #0061a7, #005cbf);
    transform: scale(1.07);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.gr-tab {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    margin-bottom: 20px;
}

.gr-tab.active {
    background: rgba(255, 136, 0, 0.1); /* Add a slight orange tint to active tab */
    border-left: 4px solid #ff8c00;
}

h1, h2, h3, h4, h5, h6 {
    color: #ffeb3b;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

#billing_output {
    background: rgba(40, 40, 40, 0.9);
    padding: 20px;
    border-radius: 8px;
    color: #ffeb3b;
    font-size: 18px;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.checkbox, .textbox {
    margin-bottom: 18px;
    color: #f5f5f5;
}

::placeholder {
    color: #888;
    opacity: 1;
}

/* Tab styling */
.nav-tabs {
    display: flex;
    justify-content: space-around;
    background-color: #1e3c72;
    border-bottom: 2px solid #ff8c00;
}

.nav-tabs .nav-item {
    flex: 1;
    text-align: center;
    padding: 10px;
    cursor: pointer;
    color: #ffffff;
    font-weight: 600;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.nav-tabs .nav-item:hover,
.nav-tabs .nav-item.active {
    color: #ff8c00;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px 8px 0 0;
}

"""

app.launch()