app.py

"""
Forge-Anim Brick
"""
import gradio as gr
import spaces
# Robust import for local workspace + HF Space deployment (common is vendored on push)
import sys
from pathlib import Path

HERE = Path(__file__).resolve().parent
for candidate in (HERE.parent, HERE):
    if (candidate / "common" / "manifest.py").exists():
        sys.path.insert(0, str(candidate))
        break

try:
    from common.manifest import create_manifest
except ImportError as e:
    raise ImportError(
        "Failed to import shared 'common' package (manifest.py).\n"
        "For local development: run ./install.sh from the forge-bricks/ root.\n"
        "For HF Spaces: re-run scripts/push_to_hf.py so it vendors common/."
    ) from e
import os
from pathlib import Path
from datetime import datetime

@spaces.GPU(duration=30)
def generate_anim(rig_data: str, motion_desc: str) -> dict:
    out = Path(os.environ.get("FORGE_BRICKS_OUTPUT", "./outputs/forge_anim"))
    out.mkdir(parents=True, exist_ok=True)
    ts = int(datetime.now().timestamp())

    # Use VLM or simple logic + structured output for animation data
    # In production, could call a motion model Space or LLM for keyframe data
    anim = {
        "clips": ["idle", "walk", "attack"],
        "motion_desc": motion_desc,
        "rig_ref": rig_data[:100] if rig_data else "",
        "keyframe_suggestions": {
            "idle": "loop 0-30 frames, subtle breathing",
            "walk": "cycle 0-24 frames, foot plant at 0/12",
            "attack": "windup 0-10, impact 10-15, recover 15-30"
        },
        "note": "Structured animation metadata. Apply in Godot/Blender using the rig_data."
    }

    man = create_manifest(
        name="anim",
        type="animation",
        source_brick="forge-anim",
        prompt_or_desc=motion_desc,
        files={"anim_data": str(out / f"anim_{ts}.json")},
        metadata=anim,
        commercial_ok=True
    )
    (out / f"anim_{ts}.json").write_text(str(anim))
    man.save(out / f"manifest_{ts}.json")
    return {"anim_data": anim, "manifest": man.to_dict()}

def build_ui():
    with gr.Blocks() as d:
        gr.Markdown("# Forge-Anim")
        rig = gr.Textbox("rig json or description")
        motion = gr.Textbox("heroic walk cycle")
        btn = gr.Button("Generate Anim")
        out = gr.JSON()
        btn.click(generate_anim, [rig, motion], out)
    return d

# Build at module level so that `demo` (and `gradio_app`) exist when the module is imported
# (required for Hugging Face Spaces and for agent/MCP discovery).
demo = build_ui()
gradio_app = demo  # alias for compatibility with tools/skills that expect `gradio_app`

if __name__ == "__main__":
    demo.launch(server_name="0.0.0.0", server_port=7867, mcp_server=True)