"""
VitalLink Complete Test Suite
Integrated testing script that simulates the entire system
"""

import asyncio
import time
from datetime import datetime
import random

# Import from previous modules (in production, these would be proper imports)
# For this demo, we'll include simplified versions

# ============================================================================
# CONFIGURATION
# ============================================================================

API_BASE = "http://localhost:8000"
ENABLE_API_CALLS = False  # Set to True when backend is running

# ============================================================================
# TEST SUITE
# ============================================================================


class VitalLinkTestSuite:
    """Comprehensive testing suite for VitalLink system"""

    def __init__(self):
        self.test_results = []
        self.patients_created = []

    def log_test(self, test_name: str, passed: bool, message: str = ""):
        """Log test result"""
        status = "✓ PASS" if passed else "✗ FAIL"
        result = {
            "test": test_name,
            "passed": passed,
            "message": message,
            "timestamp": datetime.now(),
        }
        self.test_results.append(result)
        print(f"{status} | {test_name}")
        if message:
            print(f"      {message}")

    async def test_1_patient_data_validation(self):
        """Test 1: Validate patient data structure"""
        print("\n" + "=" * 80)
        print("TEST 1: Patient Data Validation")
        print("=" * 80)

        # Test valid patient data
        valid_patient = {
            "firstName": "John",
            "lastName": "Doe",
            "dob": "1990-01-01",
            "symptoms": ["Chest Pain", "Shortness of Breath"],
            "severity": "moderate",
        }

        self.log_test(
            "Valid patient data structure",
            all(
                key in valid_patient
                for key in ["firstName", "lastName", "dob", "symptoms", "severity"]
            ),
            f"Patient: {valid_patient['firstName']} {valid_patient['lastName']}",
        )

        # Test invalid data
        invalid_patient = {
            "firstName": "Jane",
            # Missing lastName
            "dob": "1985-05-15",
            "symptoms": [],
            "severity": "mild",
        }

        self.log_test(
            "Detect missing required fields",
            "lastName" not in invalid_patient,
            "Missing 'lastName' field detected",
        )

        # Test date validation
        try:
            datetime.strptime(valid_patient["dob"], "%Y-%m-%d")
            self.log_test(
                "Date format validation", True, "Date format YYYY-MM-DD accepted"
            )
        except:
            self.log_test("Date format validation", False, "Invalid date format")

    async def test_2_vitals_packet_generation(self):
        """Test 2: Vitals packet generation and checksum"""
        print("\n" + "=" * 80)
        print("TEST 2: Vitals Packet Generation")
        print("=" * 80)

        # Simulate packet generation
        import struct

        PKT_STRUCT = struct.Struct("<B H I B B B h H B B")

        # Create test packet
        test_data = (
            1,  # version
            42,  # seq
            120000,  # timestamp
            2,  # flags (ALERT)
            78,  # HR
            97,  # SpO2
            3645,  # temp * 100
            180,  # activity * 100
            0,  # checksum placeholder
            0,  # reserved
        )

        packet = bytearray(PKT_STRUCT.pack(*test_data))

        # Calculate checksum
        checksum = sum(packet[0:14]) & 0xFF
        packet[14] = checksum

        self.log_test(
            "Packet structure (16 bytes)",
            len(packet) == 16,
            f"Packet size: {len(packet)} bytes",
        )

        # Verify checksum
        verify_checksum = sum(packet[0:14]) & 0xFF
        self.log_test(
            "Checksum validation",
            verify_checksum == packet[14],
            f"Checksum: 0x{checksum:02X}",
        )

        # Decode and verify
        decoded = PKT_STRUCT.unpack(bytes(packet))
        self.log_test(
            "Packet decode integrity",
            decoded[4] == 78 and decoded[5] == 97,  # HR and SpO2
            f"HR={decoded[4]} bpm, SpO2={decoded[5]}%",
        )

    async def test_3_tier_classification(self):
        """Test 3: Alert tier classification logic"""
        print("\n" + "=" * 80)
        print("TEST 3: Alert Tier Classification")
        print("=" * 80)

        def classify_tier(hr, spo2, temp):
            """Tier classification logic"""
            if hr > 140 or hr < 45 or spo2 < 88 or temp > 39.5 or temp < 35.0:
                return "EMERGENCY"
            elif hr > 110 or hr < 50 or spo2 < 92 or temp > 38.3 or temp < 35.5:
                return "ALERT"
            else:
                return "NORMAL"

        # Test cases
        test_cases = [
            (75, 98, 36.8, "NORMAL", "Healthy vitals"),
            (115, 93, 38.4, "ALERT", "Elevated HR and temp"),
            (150, 86, 39.8, "EMERGENCY", "Critical vitals"),
            (65, 95, 37.2, "NORMAL", "Slightly elevated temp but stable"),
            (48, 89, 35.3, "ALERT", "Bradycardia and low temp"),
        ]

        for hr, spo2, temp, expected, description in test_cases:
            result = classify_tier(hr, spo2, temp)
            self.log_test(
                f"Tier: {description}",
                result == expected,
                f"HR={hr}, SpO2={spo2}%, Temp={temp}°C → {result}",
            )

    async def test_4_priority_calculation(self):
        """Test 4: Queue priority score calculation"""
        print("\n" + "=" * 80)
        print("TEST 4: Priority Score Calculation")
        print("=" * 80)

        def calculate_priority(tier, wait_minutes, severity, hr, spo2, temp):
            """Priority calculation algorithm"""
            score = 0.0

            # Tier contribution
            tier_scores = {"EMERGENCY": 100, "ALERT": 50, "NORMAL": 0}
            score += tier_scores.get(tier, 0)

            # Wait time
            if wait_minutes > 30:
                score += (wait_minutes - 30) * 0.5

            # Severity
            severity_scores = {"severe": 20, "moderate": 10, "mild": 5}
            score += severity_scores.get(severity, 0)

            # Vital signs
            if hr > 110 or hr < 50:
                score += 10
            if hr > 140 or hr < 40:
                score += 30
            if spo2 < 92:
                score += 15
            if spo2 < 88:
                score += 40
            if temp > 38.5:
                score += 15

            return score

        # Test priority ordering
        patients = [
            ("Critical ER", "EMERGENCY", 10, "severe", 148, 86, 39.8),
            ("Deteriorating", "ALERT", 45, "moderate", 118, 93, 38.4),
            ("Long Wait Stable", "NORMAL", 90, "mild", 76, 98, 36.9),
            ("Recent Stable", "NORMAL", 15, "mild", 72, 97, 37.1),
        ]

        results = []
        for name, tier, wait, severity, hr, spo2, temp in patients:
            priority = calculate_priority(tier, wait, severity, hr, spo2, temp)
            results.append((name, priority))
            print(f"      {name}: Priority Score = {priority:.1f}")

        # Verify ordering
        sorted_results = sorted(results, key=lambda x: x[1], reverse=True)
        self.log_test(
            "Critical patient has highest priority",
            sorted_results[0][0] == "Critical ER",
            f"Top priority: {sorted_results[0][0]} ({sorted_results[0][1]:.1f})",
        )

        self.log_test(
            "Wait time impacts priority",
            sorted_results[1][1] > sorted_results[3][1],
            "90-min wait scores higher than 15-min wait for NORMAL tier",
        )

    async def test_5_simulator_stability(self):
        """Test 5: Wristband simulator stability"""
        print("\n" + "=" * 80)
        print("TEST 5: Simulator Stability Test")
        print("=" * 80)

        class SimpleSimulator:
            def __init__(self):
                self.seq = 0
                self.hr = 75.0
                self.spo2 = 98.0
                self.temp = 36.8

            def generate_reading(self):
                # Add realistic variation
                self.hr += random.gauss(0, 2)
                self.spo2 += random.gauss(0, 0.5)
                self.temp += random.gauss(0, 0.1)

                # Clamp to realistic ranges
                self.hr = max(40, min(180, self.hr))
                self.spo2 = max(70, min(100, self.spo2))
                self.temp = max(35, min(41, self.temp))

                self.seq += 1
                return int(self.hr), int(self.spo2), round(self.temp, 1)

        sim = SimpleSimulator()
        readings = []

        # Generate 100 readings
        for _ in range(100):
            readings.append(sim.generate_reading())
            await asyncio.sleep(0.01)  # Simulate time passage

        # Verify stability
        hrs = [r[0] for r in readings]
        spo2s = [r[1] for r in readings]
        temps = [r[2] for r in readings]

        self.log_test(
            "Generated 100 readings",
            len(readings) == 100,
            f"Sequence numbers: 1-{sim.seq}",
        )

        self.log_test(
            "HR within realistic bounds",
            all(40 <= hr <= 180 for hr in hrs),
            f"Range: {min(hrs)}-{max(hrs)} bpm",
        )

        self.log_test(
            "SpO2 within realistic bounds",
            all(70 <= spo2 <= 100 for spo2 in spo2s),
            f"Range: {min(spo2s)}-{max(spo2s)}%",
        )

        self.log_test(
            "Temperature within realistic bounds",
            all(35.0 <= temp <= 41.0 for temp in temps),
            f"Range: {min(temps)}-{max(temps)}°C",
        )

    async def test_6_deterioration_detection(self):
        """Test 6: Patient deterioration detection"""
        print("\n" + "=" * 80)
        print("TEST 6: Deterioration Detection")
        print("=" * 80)

        class PatientMonitor:
            def __init__(self):
                self.hr_history = []
                self.spo2_history = []

            def add_reading(self, hr, spo2):
                self.hr_history.append(hr)
                self.spo2_history.append(spo2)

                # Keep last 10 readings
                if len(self.hr_history) > 10:
                    self.hr_history = self.hr_history[-10:]
                    self.spo2_history = self.spo2_history[-10:]

            def detect_deterioration(self):
                """Detect worsening trends"""
                if len(self.hr_history) < 5:
                    return False, "Insufficient data"

                # Check for consistent increase in HR
                hr_trend = sum(self.hr_history[-3:]) / 3 - sum(self.hr_history[:3]) / 3

                # Check for consistent decrease in SpO2
                spo2_trend = (
                    sum(self.spo2_history[:3]) / 3 - sum(self.spo2_history[-3:]) / 3
                )

                if hr_trend > 15 or spo2_trend > 3:
                    return (
                        True,
                        f"HR trend: +{hr_trend:.1f}, SpO2 trend: -{spo2_trend:.1f}",
                    )

                return False, "Stable"

        monitor = PatientMonitor()

        # Simulate gradual deterioration
        base_hr = 80
        base_spo2 = 97

        for i in range(10):
            hr = base_hr + (i * 3)  # Increase HR
            spo2 = base_spo2 - (i * 0.5)  # Decrease SpO2
            monitor.add_reading(hr, int(spo2))

        deteriorating, message = monitor.detect_deterioration()

        self.log_test("Detect deteriorating patient", deteriorating, message)

        # Test stable patient
        stable_monitor = PatientMonitor()
        for _ in range(10):
            stable_monitor.add_reading(
                75 + random.randint(-3, 3), 98 + random.randint(-1, 1)
            )

        stable, message = stable_monitor.detect_deterioration()

        self.log_test("Stable patient not flagged", not stable, message)

    async def test_7_transmission_timing(self):
        """Test 7: Verify transmission intervals by tier"""
        print("\n" + "=" * 80)
        print("TEST 7: Transmission Timing")
        print("=" * 80)

        def get_interval(tier):
            """Get transmission interval for tier"""
            intervals = {"EMERGENCY": 1.0, "ALERT": 1.0, "NORMAL": 60.0}
            return intervals.get(tier, 60.0)

        test_cases = [("EMERGENCY", 1.0), ("ALERT", 1.0), ("NORMAL", 60.0)]

        for tier, expected in test_cases:
            result = get_interval(tier)
            self.log_test(
                f"{tier} tier interval",
                result == expected,
                f"{result}s transmission interval",
            )

    def generate_report(self):
        """Generate test report"""
        print("\n" + "=" * 80)
        print("TEST SUITE SUMMARY")
        print("=" * 80)

        total = len(self.test_results)
        passed = sum(1 for r in self.test_results if r["passed"])
        failed = total - passed

        print(f"\nTotal Tests: {total}")
        print(f"Passed: {passed} ({100 * passed / total:.1f}%)")
        print(f"Failed: {failed} ({100 * failed / total:.1f}%)")

        if failed > 0:
            print("\nFailed Tests:")
            for result in self.test_results:
                if not result["passed"]:
                    print(f"  ✗ {result['test']}")
                    if result["message"]:
                        print(f"    {result['message']}")

        print("\n" + "=" * 80)

        return passed == total

    async def run_all_tests(self):
        """Run complete test suite"""
        print("\n")
        print(
            "╔═══════════════════════════════════════════════════════════════════════╗"
        )
        print(
            "║              VitalLink System - Complete Test Suite                  ║"
        )
        print(
            "╚═══════════════════════════════════════════════════════════════════════╝"
        )

        await self.test_1_patient_data_validation()
        await self.test_2_vitals_packet_generation()
        await self.test_3_tier_classification()
        await self.test_4_priority_calculation()
        await self.test_5_simulator_stability()
        await self.test_6_deterioration_detection()
        await self.test_7_transmission_timing()

        success = self.generate_report()

        return success


# ============================================================================
# DEMONSTRATION SCENARIOS
# ============================================================================


async def demo_emergency_scenario():
    """Demonstrate emergency patient handling"""
    print("\n" + "=" * 80)
    print("DEMO: Emergency Patient Scenario")
    print("=" * 80)
    print("\nSimulating a patient experiencing a medical emergency...\n")

    # Patient starts deteriorating
    print("Time 0:00 - Patient arrives, appears stable")
    print("  HR: 95 bpm, SpO2: 96%, Temp: 37.8°C")
    print("  Status: NORMAL tier")
    await asyncio.sleep(2)

    print("\nTime 1:00 - Condition worsening")
    print("  HR: 118 bpm, SpO2: 93%, Temp: 38.5°C")
    print("  Status: Upgraded to ALERT tier")
    print("  Action: Transmission frequency increased to 1 Hz")
    await asyncio.sleep(2)

    print("\nTime 2:30 - Critical deterioration")
    print("  HR: 152 bpm, SpO2: 87%, Temp: 39.9°C")
    print("  Status: EMERGENCY tier activated")
    print("  Action: Buzzer activated, priority score: 156.2")
    print("  Action: Staff notified immediately")
    await asyncio.sleep(2)

    print("\nTime 3:00 - Patient being attended")
    print("  Queue Position: #1 (highest priority)")
    print("  Medical team dispatched")

    print("\n✓ Emergency protocol executed successfully\n")


async def demo_queue_management():
    """Demonstrate dynamic queue management"""
    print("\n" + "=" * 80)
    print("DEMO: Dynamic Queue Management")
    print("=" * 80)
    print("\nSimulating 4 patients with varying conditions...\n")

    patients = [
        ("Alice", "NORMAL", 45, 75, 98, 36.9),
        ("Bob", "ALERT", 10, 122, 91, 38.7),
        ("Charlie", "NORMAL", 20, 80, 97, 37.2),
        ("Diana", "EMERGENCY", 5, 155, 85, 40.1),
    ]

    print("Initial Queue State:")
    for name, tier, wait, hr, spo2, temp in patients:
        print(
            f"  {name:8} | {tier:9} | Wait: {wait:2}min | "
            f"HR: {hr:3} | SpO2: {spo2:2}% | Temp: {temp:.1f}°C"
        )

    await asyncio.sleep(3)

    print("\nPriority Scores Calculated:")
    print("  Diana (EMERGENCY):  178.5 → Queue Position #1")
    print("  Bob (ALERT):         72.3 → Queue Position #2")
    print("  Alice (NORMAL):      37.5 → Queue Position #3")
    print("  Charlie (NORMAL):    20.0 → Queue Position #4")

    await asyncio.sleep(2)

    print("\nAfter 30 minutes...")
    print("  Diana: Seen by doctor (discharged from queue)")
    print("  Bob: Stabilized → Downgraded to NORMAL")
    print("  Alice: Wait time now 75min → Priority increased")
    print("\nUpdated Queue:")
    print("  Alice:   Priority 60.0 → Queue Position #1")
    print("  Bob:     Priority 45.0 → Queue Position #2")
    print("  Charlie: Priority 35.0 → Queue Position #3")

    print("\n✓ Queue dynamically adjusted based on condition and wait time\n")


# ============================================================================
# MAIN
# ============================================================================


async def main():
    """Main test execution"""

    print("\nVitalLink System Test Suite")
    print("Choose an option:")
    print("  1. Run complete test suite")
    print("  2. Demo: Emergency scenario")
    print("  3. Demo: Queue management")
    print("  4. Run all")

    choice = "4"  # Default to run all

    if choice in ["1", "4"]:
        suite = VitalLinkTestSuite()
        success = await suite.run_all_tests()

        if not success:
            print("\n⚠️  Some tests failed. Review output above.")

    if choice in ["2", "4"]:
        await demo_emergency_scenario()

    if choice in ["3", "4"]:
        await demo_queue_management()

    print("\n" + "=" * 80)
    print("Testing complete. System ready for deployment.")
    print("=" * 80 + "\n")


if __name__ == "__main__":
    asyncio.run(main())