import requests
import os
import sys
import uuid
from datetime import date

# Base URL for the FastAPI server
BASE_URL = "http://localhost:8000"

# Path to the test image
IMAGE_PATH = "test_face.jpg"

def download_test_image():
    if not os.path.exists(IMAGE_PATH):
        print(f"Downloading test image to {IMAGE_PATH}...")
        url = "https://raw.githubusercontent.com/opencv/opencv/master/samples/data/lena.jpg"
        response = requests.get(url)
        if response.status_code == 200:
            with open(IMAGE_PATH, 'wb') as f:
                f.write(response.content)
            print("Downloaded successfully.")
        else:
            print("Failed to download test image.")
            sys.exit(1)

def run_tests():
    print("--- VisionAttend Integration Tests ---")
    
    # Generate unique roll number to avoid constraint errors
    roll_number = f"TEST-{uuid.uuid4().hex[:6].upper()}"
    student_name = "Test Student"
    student_id = None
    
    print("\n[1] Testing Registration...")
    try:
        with open(IMAGE_PATH, 'rb') as f:
            files = {'image': (IMAGE_PATH, f, 'image/jpeg')}
            data = {'name': student_name, 'roll_number': roll_number}
            response = requests.post(f"{BASE_URL}/api/register", data=data, files=files)
            
            if response.status_code == 200:
                result = response.json()
                student_id = result.get('student_id')
                print(f"✅ Registration successful. Student ID: {student_id}")
            else:
                print(f"❌ Registration failed: {response.text}")
                return
    except Exception as e:
        print(f"❌ Registration exception: {e}")
        return

    print("\n[2] Testing Recognition & Attendance Marking...")
    try:
        with open(IMAGE_PATH, 'rb') as f:
            files = {'image': (IMAGE_PATH, f, 'image/jpeg')}
            response = requests.post(f"{BASE_URL}/api/recognize", files=files)
            
            if response.status_code == 200:
                result = response.json()
                print(f"✅ Recognition successful: {result['message']} - {result['student_name']} ({result['roll_number']})")
                assert result['roll_number'] == roll_number
            else:
                print(f"❌ Recognition failed: {response.text}")
    except Exception as e:
         print(f"❌ Recognition exception: {e}")

    print("\n[3] Testing Attendance Logs Query...")
    try:
        today_str = date.today().strftime("%Y-%m-%d")
        response = requests.get(f"{BASE_URL}/api/attendance?date_filter={today_str}")
        if response.status_code == 200:
            logs = response.json().get('logs', [])
            found = False
            for log in logs:
                if log.get('student_id') == str(student_id):
                    found = True
                    print(f"✅ Found student in logs. Status: {log.get('status')}")
                    assert log.get('status') == 'Present'
                    break
            if not found:
                print("❌ Student not found in attendance logs.")
        else:
           print(f"❌ Attendance query failed: {response.text}")
    except Exception as e:
         print(f"❌ Attendance query exception: {e}")

    print("\n[4] Testing Manual Attendance Update...")
    try:
        data = {
            "student_id": str(student_id),
            "date": date.today().strftime("%Y-%m-%d"),
            "status": "Absent"
        }
        response = requests.post(f"{BASE_URL}/api/attendance/manual", json=data)
        if response.status_code == 200:
            print("✅ Manual attendance marked successfully.")
        else:
            print(f"❌ Manual attendance failed: {response.text}")
    except Exception as e:
         print(f"❌ Manual attendance exception: {e}")

    print("\n[5] Testing Student Details Update...")
    try:
        new_name = "Updated Test Student"
        # We'll use the same roll_number as checking existing logic
        data = {
            "name": new_name,
            "roll_number": roll_number
        }
        response = requests.put(f"{BASE_URL}/api/students/{student_id}", json=data)
        if response.status_code == 200:
            print("✅ Student details updated successfully.")
        else:
            print(f"❌ Student detail update failed: {response.text}")
    except Exception as e:
         print(f"❌ Student detail update exception: {e}")

    print("\n[6] Testing Student Deletion (Cleanup)...")
    if student_id:
        try:
             response = requests.delete(f"{BASE_URL}/api/students/{student_id}")
             if response.status_code == 200:
                  print("✅ Student deleted successfully.")
             else:
                  print(f"❌ Student deletion failed: {response.text}")
        except Exception as e:
             print(f"❌ Student deletion exception: {e}")


if __name__ == "__main__":
    download_test_image()
    run_tests()