"""
FormScout headless CLI entrypoint.
Usage: python -m formscout.run sample.mp4
"""
from __future__ import annotations

import sys
import json
from pathlib import Path

from formscout.pipeline import Director
from formscout.rubric import score_test


def main():
    if len(sys.argv) < 2:
        print("Usage: python -m formscout.run <video_path> [test_name] [side]")
        sys.exit(1)

    video_path = sys.argv[1]
    test_name = sys.argv[2] if len(sys.argv) > 2 else "deep_squat"
    side = sys.argv[3] if len(sys.argv) > 3 else "na"

    print(f"FormScout — processing: {video_path}")
    print(f"  Test: {test_name}, Side: {side}")
    print()

    director = Director()
    state = director.run(video_path, test_name=test_name, side=side)

    # Print pipeline state
    if state.errors:
        print("ERRORS:")
        for e in state.errors:
            print(f"  ✗ {e}")
        print()

    if state.warnings:
        print("WARNINGS:")
        for w in state.warnings:
            print(f"  ⚠ {w}")
        print()

    if state.ingest:
        print(f"Ingest: {len(state.ingest.frames)} frames, {state.ingest.fps:.1f}fps, "
              f"{state.ingest.duration:.1f}s, {state.ingest.width}x{state.ingest.height}")

    if state.pose2d:
        n_detected = sum(1 for kps in state.pose2d.keypoints if kps)
        print(f"Pose2D: {n_detected}/{len(state.pose2d.keypoints)} frames with detections, "
              f"confidence={state.pose2d.confidence:.2f}")

    if state.body3d:
        print(f"Body3D: used={state.body3d.used}")

    if state.features:
        print(f"Biomechanics: view={state.features.view}, "
              f"confidence={state.features.confidence:.2f}")
        if state.features.angles:
            print(f"  Angles: {json.dumps({k: round(v, 1) for k, v in state.features.angles.items()}, indent=4)}")
        if state.features.alignments:
            print(f"  Alignments: {json.dumps(state.features.alignments, indent=4)}")

    # Score via rubric
    if state.features and test_name == "deep_squat":
        score_result = score_test(state.features)
        print(f"\nSCORE: {score_result.score}/3")
        print(f"  Rationale: {score_result.rationale}")
        print(f"  Confidence: {score_result.confidence:.2f}")
        if score_result.needs_human:
            print("  ⚠ NEEDS HUMAN REVIEW")

    # Judge result
    if state.judge:
        print(f"\nJUDGE: score={state.judge.score}, needs_human={state.judge.needs_human}")
        print(f"  Rationale: {state.judge.rationale}")
        if state.judge.compensation_tags:
            print(f"  Compensations: {state.judge.compensation_tags}")
        if state.judge.corrective_hint:
            print(f"  Corrective: {state.judge.corrective_hint}")


if __name__ == "__main__":
    main()