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"""

Convert task.json actions to Unified Action Space format (v2 - clean format)

Format: Action(param1, param2) without quotes around string params

"""

import json
import os
import re
from pathlib import Path
from collections import Counter

def extract_distance(params_str, default=1.0):
    if not params_str:
        return default
    match = re.search(r'distance=(\d+(?:\.\d+)?)', params_str)
    if match:
        return float(match.group(1))
    match = re.search(r'^(\d+(?:\.\d+)?)$', params_str.strip())
    if match:
        return float(match.group(1))
    return default

def extract_angle(params_str, default=90):
    if not params_str:
        return default
    match = re.search(r'(\d+)', params_str)
    if match:
        return int(match.group(1))
    return default

def parse_action(action_str):
    match = re.match(r'^(\w+)\s*(?:\(([^)]*)\))?$', action_str.strip())
    if match:
        name = match.group(1)
        params = match.group(2) if match.group(2) else ''
        return name, params
    return action_str, ''

def convert_action(action_str):
    """Convert to clean format: Action(param1, param2)"""
    name, params = parse_action(action_str)

    # Navigation
    if name == 'MoveAhead':
        return f'Move(forward, {extract_distance(params, 1.0)})'
    if name == 'MoveBack':
        return f'Move(backward, {extract_distance(params, 1.0)})'
    if name == 'MoveLeft':
        return f'Move(left, {extract_distance(params, 1.0)})'
    if name == 'MoveRight':
        return f'Move(right, {extract_distance(params, 1.0)})'
    if name == 'WalkForward':
        return f'Move(forward, {extract_distance(params, 10)})'
    if name == 'FollowLane':
        return f'Move(forward, {extract_distance(params, 10)})'
    if name == 'Move':
        # Already converted - parse and reformat
        match = re.match(r'["\']?(\w+)["\']?\s*,\s*(.+)', params)
        if match:
            direction = match.group(1)
            dist = match.group(2).strip().strip('"\'')
            return f'Move({direction}, {dist})'
        return action_str

    # Rotation
    if name == 'RotateLeft':
        return f'Rotate(left, {extract_angle(params, 90)})'
    if name == 'RotateRight':
        return f'Rotate(right, {extract_angle(params, 90)})'
    if name == 'TurnLeft':
        return 'Rotate(left, 90)'
    if name == 'TurnRight':
        return 'Rotate(right, 90)'
    if name == 'TeleportTurnLeft':
        return 'Rotate(left, 90)'
    if name == 'TeleportTurnRight':
        return 'Rotate(right, 90)'
    if name == 'Rotate':
        # Reformat if needed
        match = re.match(r'["\']?(\w+)["\']?\s*,\s*(\d+)', params)
        if match:
            direction = match.group(1)
            angle = match.group(2)
            return f'Rotate({direction}, {angle})'
        return action_str

    # Tilt
    if name == 'LookUp':
        return f'Tilt(up, {extract_angle(params, 30)})'
    if name == 'LookDown':
        return f'Tilt(down, {extract_angle(params, 30)})'
    if name == 'Tilt':
        match = re.match(r'["\']?(\w+)["\']?\s*,\s*(\d+)', params)
        if match:
            direction = match.group(1)
            angle = match.group(2)
            return f'Tilt({direction}, {angle})'
        return action_str

    if name == 'ChangePosture':
        match = re.match(r'["\']?([^"\']+)["\']?', params)
        if match:
            return f'ChangePosture({match.group(1)})'
        return action_str

    # Interaction - Pick/Place
    if name == 'PickupObject':
        obj = params.strip().strip('"\'') if params else 'object'
        return f'Pick({obj})'
    if name == 'PutObject':
        obj = params.strip().strip('"\'') if params else 'object'
        return f'Place({obj})'
    if name == 'DropHandObject':
        return 'Place(held_object)'

    if name == 'Pick':
        match = re.match(r'["\']?([^"\']+)["\']?', params)
        if match:
            return f'Pick({match.group(1)})'
        return action_str
    if name == 'Place':
        match = re.match(r'["\']?([^"\']+)["\']?', params)
        if match:
            return f'Place({match.group(1)})'
        return action_str

    # Interaction - ChangeState
    if name == 'ToggleObjectOn':
        obj = params.strip().strip('"\'') if params else 'object'
        return f'ChangeState({obj}, on)'
    if name == 'ToggleObjectOff':
        obj = params.strip().strip('"\'') if params else 'object'
        return f'ChangeState({obj}, off)'
    if name == 'ChangeState':
        match = re.match(r'["\']?([^"\']+)["\']?\s*,\s*["\']?([^"\']+)["\']?', params)
        if match:
            return f'ChangeState({match.group(1)}, {match.group(2)})'
        return action_str

    # Interaction - Manipulate
    if name in ['OpenObject', 'CloseObject', 'CleanObject', 'FillObjectWithLiquid',
                'SliceObject', 'BreakObject', 'CookObject', 'EmptyLiquidFromObject']:
        obj = params.strip().strip('"\'') if params else 'object'
        action_name = name.replace('Object', '').lower()
        return f'Manipulate({obj}, {action_name})'
    if name == 'Manipulate':
        match = re.match(r'["\']?([^"\']+)["\']?\s*,\s*["\']?([^"\']+)["\']?', params)
        if match:
            return f'Manipulate({match.group(1)}, {match.group(2)})'
        return action_str

    # Task-Control
    if name == 'Done':
        return 'EndTask(success)'
    if name == 'Stop':
        return 'EndTask(stopped)'
    if name == 'EndTask':
        match = re.match(r'["\']?([^"\']+)["\']?', params)
        if match:
            return f'EndTask({match.group(1)})'
        return action_str

    # Communication
    if name == 'Communicate':
        match = re.match(r'["\']?([^"\']+)["\']?', params)
        if match:
            return f'Communicate({match.group(1)})'
        return action_str

    return action_str

def convert_task_file(filepath, stats):
    try:
        with open(filepath, 'r', encoding='utf-8') as f:
            data = json.load(f)

        if 'golden_actions' not in data or 'actions' not in data['golden_actions']:
            return False, "No golden_actions"

        original_actions = data['golden_actions']['actions']
        if not original_actions:
            return False, "Empty actions"

        converted_actions = []
        has_changes = False

        for a in original_actions:
            converted = convert_action(a)
            converted_actions.append(converted)
            if converted != a:
                has_changes = True
                old_name, _ = parse_action(a)
                new_name, _ = parse_action(converted)
                key = f"{old_name} -> {new_name}"
                stats[key] += 1

        data['golden_actions']['actions'] = converted_actions

        with open(filepath, 'w', encoding='utf-8') as f:
            json.dump(data, f, indent=2, ensure_ascii=False)

        return True, None

    except Exception as e:
        return False, str(e)

def main():
    base_dir = Path(".")
    stats = Counter()

    converted = 0
    unchanged = 0
    errors = 0

    for task_file in base_dir.rglob("task.json"):
        success, msg = convert_task_file(task_file, stats)
        if success:
            converted += 1
        elif msg == "No golden_actions":
            pass
        elif msg == "Empty actions":
            pass
        else:
            errors += 1
            if msg != "No changes needed":
                print(f"Warning: {task_file} - {msg}")

    print(f"\n{'='*70}")
    print(f"Task.json Conversion Summary (v2 - Clean Format)")
    print(f"{'='*70}")
    print(f"Files modified: {converted}")
    print(f"Errors: {errors}")

    if stats:
        print(f"\nAction conversion statistics:")
        for key, count in stats.most_common(30):
            print(f"  {count:6d} | {key}")

if __name__ == "__main__":
    main()