import pytest
from fastapi.testclient import TestClient
from app.main import app
from io import BytesIO

client = TestClient(app)

def test_two_object_size_success():
    # Create test image files
    test_image1 = BytesIO(b"fake image data 1")
    test_image1.name = "test_image1.jpg"
    test_image2 = BytesIO(b"fake image data 2")
    test_image2.name = "test_image2.jpg"
    
    # Test data
    files = [
        ("garment_images", ("test_image1.jpg", test_image1, "image/jpeg")),
        ("garment_images", ("test_image2.jpg", test_image2, "image/jpeg"))
    ]
    data = {
        "product_height1": 10.0,
        "product_width1": 15.0,
        "product_length1": 2.0,
        "product_height2": 12.0,
        "product_width2": 18.0,
        "product_length2": 2.5
    }
    
    response = client.post("/api/v1/walletsize", files=files, data=data)
    assert response.status_code == 200
    assert response.headers["content-type"] == "image/png"

def test_two_object_size_invalid_dimensions():
    test_image1 = BytesIO(b"fake image data 1")
    test_image1.name = "test_image1.jpg"
    test_image2 = BytesIO(b"fake image data 2")
    test_image2.name = "test_image2.jpg"
    
    files = [
        ("garment_images", ("test_image1.jpg", test_image1, "image/jpeg")),
        ("garment_images", ("test_image2.jpg", test_image2, "image/jpeg"))
    ]
    data = {
        "product_height1": "invalid",  # Invalid height
        "product_width1": 15.0,
        "product_length1": 2.0,
        "product_height2": 12.0,
        "product_width2": 18.0,
        "product_length2": 2.5
    }
    
    response = client.post("/api/v1/walletsize", files=files, data=data)
    assert response.status_code == 400
    assert "Invalid dimensions" in response.json()["detail"]

def test_two_object_size_invalid_file_type():
    test_file1 = BytesIO(b"not an image 1")
    test_file1.name = "test1.txt"
    test_file2 = BytesIO(b"not an image 2")
    test_file2.name = "test2.txt"
    
    files = [
        ("garment_images", ("test1.txt", test_file1, "text/plain")),
        ("garment_images", ("test2.txt", test_file2, "text/plain"))
    ]
    data = {
        "product_height1": 10.0,
        "product_width1": 15.0,
        "product_length1": 2.0,
        "product_height2": 12.0,
        "product_width2": 18.0,
        "product_length2": 2.5
    }
    
    response = client.post("/api/v1/walletsize", files=files, data=data)
    assert response.status_code == 400
    assert "Invalid file type" in response.json()["detail"]

def test_two_object_size_missing_file():
    data = {
        "product_height1": 10.0,
        "product_width1": 15.0,
        "product_length1": 2.0,
        "product_height2": 12.0,
        "product_width2": 18.0,
        "product_length2": 2.5
    }
    
    response = client.post("/api/v1/walletsize", data=data)
    assert response.status_code == 422  # FastAPI validation error

def test_two_object_size_single_file():
    test_image = BytesIO(b"fake image data")
    test_image.name = "test_image.jpg"
    
    files = {
        "garment_images": ("test_image.jpg", test_image, "image/jpeg")
    }
    data = {
        "product_height1": 10.0,
        "product_width1": 15.0,
        "product_length1": 2.0,
        "product_height2": 12.0,
        "product_width2": 18.0,
        "product_length2": 2.5
    }
    
    response = client.post("/api/v1/walletsize", files=files, data=data)
    assert response.status_code == 400
    assert "Exactly two front shot images of wallet" in response.json()["detail"]

def test_two_object_size_three_files():
    test_image1 = BytesIO(b"fake image data 1")
    test_image1.name = "test_image1.jpg"
    test_image2 = BytesIO(b"fake image data 2")
    test_image2.name = "test_image2.jpg"
    test_image3 = BytesIO(b"fake image data 3")
    test_image3.name = "test_image3.jpg"
    
    files = [
        ("garment_images", ("test_image1.jpg", test_image1, "image/jpeg")),
        ("garment_images", ("test_image2.jpg", test_image2, "image/jpeg")),
        ("garment_images", ("test_image3.jpg", test_image3, "image/jpeg"))
    ]
    data = {
        "product_height1": 10.0,
        "product_width1": 15.0,
        "product_length1": 2.0,
        "product_height2": 12.0,
        "product_width2": 18.0,
        "product_length2": 2.5
    }
    
    response = client.post("/api/v1/walletsize", files=files, data=data)
    assert response.status_code == 400
    assert "Exactly two front shot images of wallet" in response.json()["detail"]