#!/usr/bin/env python3
"""
Test and profile YLFF API endpoints using assets folder.

This script:
1. Tests all available API endpoints
2. Profiles code execution using the built-in profiler
3. Generates performance reports
4. Uses data from assets/ or data/ folders
"""

import argparse
import json
import logging
import sys
import time
from datetime import datetime
from pathlib import Path
from typing import Any, Dict, Optional
import requests

# Setup logging
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(levelname)s - %(message)s",
    datefmt="%Y-%m-%d %H:%M:%S",
)
logger = logging.getLogger(__name__)

# Add project root to path
project_root = Path(__file__).parent.parent
sys.path.insert(0, str(project_root))

try:
    from ylff.utils.profiler import Profiler, profile_context

    profiler = Profiler.get_instance()
    profiler.enabled = True
    profiler.reset()
    logger.info("Profiler initialized")
except ImportError as e:
    logger.warning(f"Could not import profiler: {e}. Continuing without local profiling.")
    profiler = None
    profile_context = lambda *args, **kwargs: type(
        "context", (), {"__enter__": lambda self: self, "__exit__": lambda *args: None}
    )()


class APITester:
    """Test and profile YLFF API endpoints."""

    def __init__(self, base_url: str = "http://localhost:8000", timeout: int = 300):
        """
        Args:
            base_url: Base URL of the API server
            timeout: Request timeout in seconds
        """
        self.base_url = base_url.rstrip("/")
        self.timeout = timeout
        self.session = requests.Session()
        self.results: Dict[str, Any] = {
            "start_time": datetime.now().isoformat(),
            "endpoints_tested": [],
            "errors": [],
            "profiling": {},
        }

    def _make_request(self, method: str, endpoint: str, **kwargs) -> Optional[Dict[str, Any]]:
        """Make an API request with profiling."""
        url = f"{self.base_url}{endpoint}"
        func_name = f"{method.upper()}_{endpoint.replace('/', '_').replace('-', '_')}"

        logger.info(f"Making {method} request to {url}")

        ctx = (
            profile_context(stage="api_request", endpoint=endpoint, method=method)
            if profiler
            else type(
                "context", (), {"__enter__": lambda self: self, "__exit__": lambda *args: None}
            )()
        )
        with ctx:
            try:
                start_time = time.time()
                logger.debug(f"Request starting: {method} {url}")
                response = self.session.request(method, url, timeout=self.timeout, **kwargs)
                duration = time.time() - start_time
                logger.info(
                    f"Request completed: {method} {url} - "
                    f"Status: {response.status_code} - "
                    f"Duration: {duration:.3f}s"
                )

                if profiler:
                    profiler.record(
                        function_name=func_name,
                        stage="api_request",
                        duration=duration,
                        status_code=response.status_code,
                        endpoint=endpoint,
                    )

                try:
                    return {
                        "status_code": response.status_code,
                        "data": response.json() if response.content else None,
                        "duration": duration,
                        "success": 200 <= response.status_code < 300,
                    }
                except json.JSONDecodeError:
                    return {
                        "status_code": response.status_code,
                        "data": response.text,
                        "duration": duration,
                        "success": 200 <= response.status_code < 300,
                    }
            except requests.exceptions.RequestException as e:
                duration = time.time() - start_time
                logger.error(
                    f"Request failed: {method} {url} - Error: {str(e)} - Duration: {duration:.3f}s"
                )
                if profiler:
                    profiler.record(
                        function_name=func_name,
                        stage="api_request",
                        duration=duration,
                        error=str(e),
                        endpoint=endpoint,
                    )
                return {"status_code": None, "error": str(e), "success": False}

    def test_health(self) -> Dict[str, Any]:
        """Test health endpoint."""
        print("\n[1/10] Testing /health endpoint...")
        result = self._make_request("GET", "/health")
        self.results["endpoints_tested"].append({"endpoint": "/health", "result": result})
        if result and result.get("success"):
            print(f"  ✓ Health check passed: {result.get('data')}")
        else:
            print(f"  ✗ Health check failed: {result}")
            self.results["errors"].append(f"Health check failed: {result}")
        return result

    def test_root(self) -> Dict[str, Any]:
        """Test root endpoint."""
        print("\n[2/10] Testing / endpoint...")
        result = self._make_request("GET", "/")
        self.results["endpoints_tested"].append({"endpoint": "/", "result": result})
        if result and result.get("success"):
            data = result.get("data", {})
            print(f"  ✓ API info retrieved: {data.get('name')} v{data.get('version')}")
        else:
            print(f"  ✗ Root endpoint failed: {result}")
        return result

    def test_models(self) -> Dict[str, Any]:
        """Test models endpoint."""
        print("\n[3/10] Testing /models endpoint...")
        result = self._make_request("GET", "/models")
        self.results["endpoints_tested"].append({"endpoint": "/models", "result": result})
        if result and result.get("success"):
            data = result.get("data", {})
            models = data.get("models", [])
            print(f"  ✓ Found {len(models)} models")
        else:
            print(f"  ✗ Models endpoint failed: {result}")
        return result

    def test_validate_sequence(self, sequence_dir: str) -> Dict[str, Any]:
        """Test sequence validation endpoint."""
        print("\n[4/10] Testing /api/v1/validate/sequence endpoint...")
        print(f"  Using sequence: {sequence_dir}")

        payload = {
            "sequence_dir": sequence_dir,
            "model_name": None,
            "use_case": "ba_validation",
            "accept_threshold": 2.0,
            "reject_threshold": 30.0,
        }

        with profile_context(stage="validate_sequence", sequence_dir=sequence_dir):
            result = self._make_request("POST", "/api/v1/validate/sequence", json=payload)

        self.results["endpoints_tested"].append(
            {"endpoint": "/api/v1/validate/sequence", "result": result}
        )

        if result and result.get("success"):
            data = result.get("data", {})
            job_id = data.get("job_id")
            print(f"  ✓ Validation job queued: {job_id}")
            return {"job_id": job_id, "result": result}
        else:
            print(f"  ✗ Validation failed: {result}")
            self.results["errors"].append(f"Sequence validation failed: {result}")
            return {"job_id": None, "result": result}

    def test_validate_arkit(self, arkit_dir: str) -> Dict[str, Any]:
        """Test ARKit validation endpoint."""
        print("\n[5/10] Testing /api/v1/validate/arkit endpoint...")
        print(f"  Using ARKit dir: {arkit_dir}")

        payload = {
            "arkit_dir": arkit_dir,
            "output_dir": "data/test_arkit_output",
            "model_name": None,
            "max_frames": 10,
            "frame_interval": 1,
            "device": "cuda",
            "gui": False,
        }

        with profile_context(stage="validate_arkit", arkit_dir=arkit_dir):
            result = self._make_request("POST", "/api/v1/validate/arkit", json=payload)

        self.results["endpoints_tested"].append(
            {"endpoint": "/api/v1/validate/arkit", "result": result}
        )

        if result and result.get("success"):
            data = result.get("data", {})
            job_id = data.get("job_id")
            print(f"  ✓ ARKit validation job queued: {job_id}")
            return {"job_id": job_id, "result": result}
        else:
            print(f"  ✗ ARKit validation failed: {result}")
            self.results["errors"].append(f"ARKit validation failed: {result}")
            return {"job_id": None, "result": result}

    def test_job_status(self, job_id: str) -> Dict[str, Any]:
        """Test job status endpoint."""
        if not job_id:
            return None

        print(f"\n[6/10] Testing /api/v1/jobs/{job_id} endpoint...")
        result = self._make_request("GET", f"/api/v1/jobs/{job_id}")

        if result and result.get("success"):
            data = result.get("data", {})
            status = data.get("status", "unknown")
            print(f"  ✓ Job status: {status}")
            return result
        else:
            print(f"  ✗ Job status check failed: {result}")
            return result

    def test_list_jobs(self) -> Dict[str, Any]:
        """Test list jobs endpoint."""
        print("\n[7/10] Testing /api/v1/jobs endpoint...")
        result = self._make_request("GET", "/api/v1/jobs")

        self.results["endpoints_tested"].append({"endpoint": "/api/v1/jobs", "result": result})

        if result and result.get("success"):
            data = result.get("data", {})
            jobs = data.get("jobs", [])
            print(f"  ✓ Found {len(jobs)} jobs")
        else:
            print(f"  ✗ List jobs failed: {result}")
        return result

    def test_profiling_metrics(self) -> Dict[str, Any]:
        """Test profiling metrics endpoint."""
        print("\n[8/10] Testing /api/v1/profiling/metrics endpoint...")
        result = self._make_request("GET", "/api/v1/profiling/metrics")

        self.results["endpoints_tested"].append(
            {"endpoint": "/api/v1/profiling/metrics", "result": result}
        )

        if result and result.get("success"):
            data = result.get("data", {})
            total_entries = data.get("total_entries", 0)
            print(f"  ✓ Profiling metrics retrieved: {total_entries} entries")
            self.results["profiling"]["metrics"] = data
        else:
            print(f"  ✗ Profiling metrics failed: {result}")
        return result

    def test_profiling_hot_paths(self) -> Dict[str, Any]:
        """Test profiling hot paths endpoint."""
        print("\n[9/10] Testing /api/v1/profiling/hot-paths endpoint...")
        result = self._make_request("GET", "/api/v1/profiling/hot-paths")

        self.results["endpoints_tested"].append(
            {"endpoint": "/api/v1/profiling/hot-paths", "result": result}
        )

        if result and result.get("success"):
            data = result.get("data", {})
            hot_paths = data.get("hot_paths", [])
            print(f"  ✓ Hot paths retrieved: {len(hot_paths)} paths")
            if hot_paths:
                print("  Top 5 hot paths:")
                for i, path in enumerate(hot_paths[:5], 1):
                    print(f"    {i}. {path.get('function')}: {path.get('total_time', 0):.3f}s")
        else:
            print(f"  ✗ Hot paths failed: {result}")
        return result

    def test_profiling_latency(self) -> Dict[str, Any]:
        """Test profiling latency endpoint."""
        print("\n[10/11] Testing /api/v1/profiling/latency endpoint...")
        result = self._make_request("GET", "/api/v1/profiling/latency")

        self.results["endpoints_tested"].append(
            {"endpoint": "/api/v1/profiling/latency", "result": result}
        )

        if result and result.get("success"):
            data = result.get("data", {})
            breakdown = data.get("breakdown", {})
            print(f"  ✓ Latency breakdown retrieved: {len(breakdown)} stages")
            if breakdown:
                print("  Stage breakdown:")
                for stage, stats in list(breakdown.items())[:5]:
                    print(
                        f"    {stage}: {stats.get('avg_time', 0):.3f}s avg, "
                        f"{stats.get('percentage', 0):.1f}% of total"
                    )
        else:
            print(f"  ✗ Latency breakdown failed: {result}")
        return result

    def test_profiling_system(self) -> Dict[str, Any]:
        """Test profiling system metrics endpoint."""
        print("\n[11/11] Testing /api/v1/profiling/system endpoint...")
        result = self._make_request("GET", "/api/v1/profiling/system")

        self.results["endpoints_tested"].append(
            {"endpoint": "/api/v1/profiling/system", "result": result}
        )

        if result and result.get("success"):
            data = result.get("data", {})
            metrics = data.get("metrics", [])
            count = data.get("count", 0)
            print(f"  ✓ System metrics retrieved: {count} samples")
            if metrics:
                latest = metrics[-1]
                print("  Latest metrics:")
                if latest.get("cpu_percent") is not None:
                    print(f"    CPU: {latest.get('cpu_percent'):.1f}%")
                if latest.get("memory_percent") is not None:
                    print(f"    Memory: {latest.get('memory_percent'):.1f}%")
                if latest.get("gpu_memory_used") is not None:
                    print(
                        f"    GPU Memory: {latest.get('gpu_memory_used'):.1f} MB / "
                        f"{latest.get('gpu_memory_total', 0):.1f} MB"
                    )
        else:
            print(f"  ✗ System metrics failed: {result}")
        return result

    def get_profiling_summary(self) -> Dict[str, Any]:
        """Get local profiling summary."""
        if profiler:
            metrics = profiler.get_metrics()
            latency = profiler.get_latency_breakdown()

            return {"local_profiler": {"metrics": metrics, "latency_breakdown": latency}}
        else:
            return {"local_profiler": {"metrics": {}, "latency_breakdown": {}}}

    def run_all_tests(self, sequence_dir: Optional[str] = None, arkit_dir: Optional[str] = None):
        """Run all API tests."""
        logger.info("=" * 80)
        logger.info("YLFF API Testing and Profiling")
        logger.info("=" * 80)
        logger.info(f"Base URL: {self.base_url}")
        logger.info(f"Start time: {self.results['start_time']}")
        logger.info(f"Sequence dir: {sequence_dir}")
        logger.info(f"ARKit dir: {arkit_dir}")
        print("=" * 80)
        print("YLFF API Testing and Profiling")
        print("=" * 80)
        print(f"Base URL: {self.base_url}")
        print(f"Start time: {self.results['start_time']}")

        # Basic endpoints
        self.test_health()
        self.test_root()
        self.test_models()

        # Validation endpoints (if data available)
        validate_job_id = None
        if sequence_dir and Path(sequence_dir).exists():
            validate_result = self.test_validate_sequence(sequence_dir)
            validate_job_id = validate_result.get("job_id") if validate_result else None
        else:
            print("\n[4/10] Skipping /api/v1/validate/sequence (no sequence dir provided)")

        if arkit_dir and Path(arkit_dir).exists():
            arkit_result = self.test_validate_arkit(arkit_dir)
            # Store job_id for potential future use
            if arkit_result:
                _ = arkit_result.get("job_id")  # noqa: F841
        else:
            print("\n[5/10] Skipping /api/v1/validate/arkit (no ARKit dir provided)")

        # Job management
        self.test_list_jobs()
        if validate_job_id:
            time.sleep(2)  # Wait a bit for job to start
            self.test_job_status(validate_job_id)

        # Profiling endpoints
        self.test_profiling_metrics()
        self.test_profiling_hot_paths()
        self.test_profiling_latency()
        self.test_profiling_system()

        # Get local profiling summary
        self.results["profiling"]["local"] = self.get_profiling_summary()

        # Final summary
        self.results["end_time"] = datetime.now().isoformat()

        print("\n" + "=" * 80)
        print("Testing Complete")
        print("=" * 80)
        print(f"Endpoints tested: {len(self.results['endpoints_tested'])}")
        print(f"Errors: {len(self.results['errors'])}")
        if self.results["errors"]:
            print("\nErrors encountered:")
            for error in self.results["errors"]:
                print(f"  - {error}")

        return self.results

    def save_results(self, output_path: Path):
        """Save test results to JSON file."""
        output_path.parent.mkdir(parents=True, exist_ok=True)
        with open(output_path, "w") as f:
            json.dump(self.results, f, indent=2, default=str)
        print(f"\nResults saved to: {output_path}")


def find_test_data(project_root: Path) -> tuple[Optional[str], Optional[str]]:
    """Find available test data in assets/ or data/ folders."""
    # Check for assets folder
    assets_dir = project_root / "assets"
    if assets_dir.exists():
        # Look for ARKit data
        arkit_dirs = list(assets_dir.rglob("ARKit")) + list(assets_dir.rglob("arkit"))
        if arkit_dirs:
            arkit_dir = str(arkit_dirs[0])
        else:
            arkit_dir = None

        # Look for image sequences
        image_dirs = [d for d in assets_dir.rglob("*") if d.is_dir() and any(d.glob("*.jpg"))]
        sequence_dir = str(image_dirs[0]) if image_dirs else None

        if arkit_dir or sequence_dir:
            return sequence_dir, arkit_dir

    # Fall back to data folder
    data_dir = project_root / "data"
    if data_dir.exists():
        # Use arkit_ba_validation as test data
        arkit_test_dir = data_dir / "arkit_ba_validation"
        if arkit_test_dir.exists():
            arkit_dir = str(arkit_test_dir)
        else:
            arkit_dir = None

        # Use ba_work/images as sequence
        ba_images_dir = data_dir / "arkit_ba_validation" / "ba_work" / "images"
        if ba_images_dir.exists() and any(ba_images_dir.glob("*.jpg")):
            sequence_dir = str(ba_images_dir)
        else:
            sequence_dir = None

        return sequence_dir, arkit_dir

    return None, None


def main():
    parser = argparse.ArgumentParser(description="Test and profile YLFF API endpoints")
    parser.add_argument(
        "--base-url",
        default="http://localhost:8000",
        help="Base URL of the API server (default: http://localhost:8000)",
    )
    parser.add_argument(
        "--sequence-dir",
        type=str,
        help="Directory containing image sequence (auto-detected if not provided)",
    )
    parser.add_argument(
        "--arkit-dir",
        type=str,
        help="Directory containing ARKit data (auto-detected if not provided)",
    )
    parser.add_argument(
        "--output",
        type=str,
        default="data/api_test_results.json",
        help="Output path for test results (default: data/api_test_results.json)",
    )
    parser.add_argument(
        "--timeout", type=int, default=300, help="Request timeout in seconds (default: 300)"
    )

    args = parser.parse_args()

    # Find test data if not provided
    sequence_dir = args.sequence_dir
    arkit_dir = args.arkit_dir

    if not sequence_dir or not arkit_dir:
        found_sequence, found_arkit = find_test_data(project_root)
        if not sequence_dir:
            sequence_dir = found_sequence
        if not arkit_dir:
            arkit_dir = found_arkit

    # Create tester and run tests
    tester = APITester(base_url=args.base_url, timeout=args.timeout)
    results = tester.run_all_tests(sequence_dir=sequence_dir, arkit_dir=arkit_dir)

    # Save results
    output_path = project_root / args.output
    tester.save_results(output_path)

    # Print profiling summary
    if results.get("profiling", {}).get("local"):
        local_prof = results["profiling"]["local"]["local_profiler"]
        metrics = local_prof.get("metrics", {})
        latency = local_prof.get("latency_breakdown", {})

        print("\n" + "=" * 80)
        print("Profiling Summary")
        print("=" * 80)
        print(f"Total entries: {metrics.get('total_entries', 0)}")
        print(f"Stages tracked: {len(metrics.get('stage_stats', {}))}")
        print(f"Functions tracked: {len(metrics.get('function_stats', {}))}")

        if latency.get("breakdown"):
            print("\nLatency Breakdown:")
            for stage, stats in sorted(
                latency["breakdown"].items(), key=lambda x: x[1].get("total_time", 0), reverse=True
            )[:10]:
                print(
                    f"  {stage:30s} {stats.get('total_time', 0):8.3f}s "
                    f"({stats.get('percentage', 0):5.1f}%) "
                    f"avg: {stats.get('avg_time', 0):.3f}s "
                    f"calls: {stats.get('call_count', 0)}"
                )

    return 0 if len(results.get("errors", [])) == 0 else 1


if __name__ == "__main__":
    sys.exit(main())