# chuk-motion/src/chuk_motion/components/layouts/FocusStrip/tool.py
"""FocusStrip MCP tool."""
import asyncio
import json
from chuk_motion.components.component_helpers import parse_nested_component
from chuk_motion.models import ErrorResponse, LayoutComponentResponse
def register_tool(mcp, project_manager):
"""Register the FocusStrip tool with the MCP server."""
@mcp.tool
async def remotion_add_focus_strip(
main_content: str | None = None,
focus_content: str | None = None,
position: str = "center",
strip_height: float = 30,
gap: float = 20,
padding: float = 40,
duration: float | str = 5.0,
) -> str:
"""
Add FocusStrip layout to the composition.
Focused strip/banner layout for highlighting key content
Args:
main_content: JSON component for background. Format: {"type": "ComponentName", "config": {...}}
focus_content: JSON component for focused strip. Same format as main_content
position: Strip position (top, center, bottom)
strip_height: Strip height (percentage)
gap: Gap
padding: Padding from edges
duration: Duration in seconds
Returns:
JSON with component info
"""
def _add():
if not project_manager.current_timeline:
return ErrorResponse(
error="No active project. Create a project first."
).model_dump_json()
try:
main_parsed = json.loads(main_content) if main_content else None
focus_parsed = json.loads(focus_content) if focus_content else None
except json.JSONDecodeError as e:
return ErrorResponse(error=f"Invalid component JSON: {str(e)}").model_dump_json()
try:
# Convert nested components to ComponentInstance objects
main_component = parse_nested_component(main_parsed)
focus_component = parse_nested_component(focus_parsed)
builder = project_manager.current_timeline
start_time = builder.get_total_duration_seconds()
builder.add_focus_strip(
start_time=start_time,
main_content=main_component,
focus_content=focus_component,
position=position,
strip_height=strip_height,
gap=gap,
padding=padding,
duration=duration,
)
return LayoutComponentResponse(
component="FocusStrip",
layout=position,
start_time=start_time,
duration=duration,
).model_dump_json()
except Exception as e:
return ErrorResponse(error=str(e)).model_dump_json()
return await asyncio.get_event_loop().run_in_executor(None, _add)
