import streamlit as st
import os, base64, shutil, random
from pathlib import Path

@st.cache_data
def load_aframe_and_extras():
    return """
    <script src="https://aframe.io/releases/1.2.0/aframe.min.js"></script>
    <script src="https://unpkg.com/aframe-event-set-component@5.0.0/dist/aframe-event-set-component.min.js"></script>
    <script>
    let score = 0;

    /* Draggable, bouncing, moving-light components unchanged */
    AFRAME.registerComponent('draggable', {/* … */});
    AFRAME.registerComponent('bouncing', {/* … */});
    AFRAME.registerComponent('moving-light', {/* … */});

    function moveCamera(direction) {
      var rig = document.querySelector('#rig');
      var pos = rig.getAttribute('position');
      var rot = rig.getAttribute('rotation');
      var speed = 0.5, rSpeed = 5;
      switch(direction) {
        case 'forward':  pos.z -= speed; break;
        case 'backward': pos.z += speed; break;
        case 'left':     pos.x -= speed; break;
        case 'right':    pos.x += speed; break;
        case 'up':       pos.y += speed; break;
        case 'down':     pos.y -= speed; break;
        case 'reset':    pos = {x:0,y:1.6,z:0}; rot = {x:0,y:0,z:0}; break;
        case 'rotateY+': rot.y += rSpeed; break;
        case 'rotateY-': rot.y -= rSpeed; break;
        case 'rotateZ+': rot.z += rSpeed; break;
        case 'rotateZ-': rot.z -= rSpeed; break;
      }
      rig.setAttribute('position', pos);
      rig.setAttribute('rotation', rot);
    }

    function fireRaycast() {
      var cam = document.querySelector('[camera]');
      var dir = new THREE.Vector3(); cam.object3D.getWorldDirection(dir);
      var rc = new THREE.Raycaster(cam.object3D.position, dir);
      var hits = rc.intersectObjects(
        Array.from(document.querySelectorAll('.raycastable')).map(e=>e.object3D), true
      );
      if (hits.length>0) {
        var el = hits[0].object.el;
        if (el.components.bouncing) {
          el.components.bouncing.boost();
          score += 10;
          document.getElementById('score').setAttribute('value','Score: '+score);
        }
      }
    }

    document.addEventListener('keydown', e => {
      switch(e.key.toLowerCase()){
        case 'w': moveCamera('forward');  break;
        case 'x': moveCamera('backward'); break;
        case 'a': moveCamera('left');     break;
        case 'd': moveCamera('right');    break;
        case 's': moveCamera('reset');    break;
        case 'q': moveCamera('rotateY+'); break;
        case 'e': moveCamera('rotateY-'); break;
        case 'z': moveCamera('rotateZ+'); break;
        case 'c': moveCamera('rotateZ-'); break;
        case ' ': fireRaycast();          break;
      }
    });
    </script>
    """

@st.cache_data
def encode_file(path):
    with open(path,'rb') as f: return base64.b64encode(f.read()).decode()

def create_aframe_entity(stem, ext, pos):
    # static random Y rotation, scale fills 1×1 tile
    ry = random.uniform(0,360)
    if ext == 'obj':
        return (f'<a-entity obj-model="obj:#{stem}" '
                f'position="{pos}" rotation="0 {ry} 0" scale="1 1 1" '
                'class="raycastable" draggable></a-entity>')
    if ext in ('glb','gltf'):
        return (f'<a-entity gltf-model="#{stem}" '
                f'position="{pos}" rotation="0 {ry} 0" scale="1 1 1" '
                'class="raycastable" draggable></a-entity>')
    return ''

@st.cache_data
def generate_tilemap(files, dirpath, gw=8, gh=8):
    img_exts   = ['webp','png']
    model_exts = ['obj','glb','gltf']
    vid_exts   = ['mp4']

    imgs   = [f for f in files if f.split('.')[-1] in img_exts]
    models = [f for f in files if f.split('.')[-1] in model_exts]
    vids   = [f for f in files if f.split('.')[-1] in vid_exts]

    assets = "<a-assets>"
    for f in files:
        stem = Path(f).stem; ext=f.split('.')[-1]
        data=encode_file(os.path.join(dirpath,f))
        if ext in model_exts:
            assets += (f'<a-asset-item id="{stem}" '
                       f'src="data:application/octet-stream;base64,{data}"></a-asset-item>')
        elif ext in img_exts:
            assets += f'<img id="{stem}" src="data:image/{ext};base64,{data}">'
        elif ext in vid_exts:
            assets += (f'<video id="{stem}" '
                       f'src="data:video/mp4;base64,{data}" '
                       'loop autoplay muted></video>')
    assets += "</a-assets>"

    entities = ""
    sx=-gw/2; sz=-gh/2
    for i in range(gw):
      for j in range(gh):
        x,y,z = sx+i,0,sz+j
        # ground image
        if imgs:
          img=random.choice(imgs); s=Path(img).stem
          entities += (f'<a-plane src="#{s}" width="1" height="1" '
                       f'rotation="-90 0 0" position="{x} 0.01 {z}"></a-plane>')
        # model
        if models:
          m=random.choice(models); ext=m.split('.')[-1]; s=Path(m).stem
          entities += create_aframe_entity(s,ext,f"{x} 0.5 {z}")
        # video
        if vids:
          v=random.choice(vids); s=Path(v).stem
          entities += (f'<a-video src="#{s}" width="1" height="1" '
                       f'rotation="-90 0 0" position="{x} 0.2 {z}" '
                       'class="raycastable" draggable></a-video>')
    return assets, entities

def main():
    st.set_page_config(layout="wide")
    with st.sidebar:
        st.markdown("### ⬆️ Upload 3D / media files")
        ups = st.file_uploader("Add files:", accept_multiple_files=True)
        st.markdown("### 🎮 Camera Buttons")
        # 3×3 grid of buttons for qwe/asd/zxc
        rows = [
          [('Q','rotateY+'), ('W','forward'),  ('E','rotateY-')],
          [('A','left'),    ('S','reset'),    ('D','right')],
          [('Z','rotateZ+'),('X','backward'),('C','rotateZ-')]
        ]
        for row in rows:
          cols = st.columns(3)
          for (btn,cmd),col in zip(row, cols):
            col.button(btn, on_click=lambda c=cmd: st.session_state.update({'camera_move':c}))
        st.markdown("### 🗺️ Grid is fixed at 8×8")
        st.markdown("### 📁 Directory")
        directory = st.text_input("Path:", ".", key="dir")

    if not os.path.isdir(directory):
        st.sidebar.error("Invalid directory")
        return

    types = ['obj','glb','gltf','webp','png','mp4']
    if ups:
      for up in ups:
        ext=Path(up.name).suffix.lower()[1:]
        if ext in types:
          with open(os.path.join(directory,up.name),'wb') as f:
            shutil.copyfileobj(up,f)
          st.sidebar.success(f"Uploaded {up.name}")
        else:
          st.sidebar.warning(f"Skipped {up.name}")

    files = [f for f in os.listdir(directory) if f.split('.')[-1] in types]

    # spotlight height
    spot_h = max(8,8)*1.5

    # build scene
    scene = f"""
    <a-scene embedded style="height:600px; width:100%;">
      <a-entity id="rig" position="0 1.6 0" rotation="0 0 0">
        <a-camera fov="60" look-controls wasd-controls="enabled:true"
                  cursor="rayOrigin:mouse" raycaster="objects:.raycastable">
        </a-camera>
      </a-entity>
      <a-sky color="#87CEEB"></a-sky>
      <!-- moving lights -->
      <a-entity moving-light="color:#FFD700; speed:0.07 0.05 0.06; bounds:4 3 4" position="2 2 -2"></a-entity>
      <a-entity moving-light="color:#FF6347; speed:0.06 0.08 0.05; bounds:4 3 4" position="-2 1 2"></a-entity>
      <a-entity moving-light="color:#00CED1; speed:0.05 0.06 0.07; bounds:4 3 4" position="0 3 0"></a-entity>
      <!-- top-down spotlight -->
      <a-entity light="type:spot; color:#FFF; intensity:1; angle:45; penumbra:0.2"
                position="0 {spot_h} 0" rotation="-90 0 0"></a-entity>
      <a-text id="score" value="Score:0" position="-1.5 2 -3" scale="0.5 0.5 0.5" color="white"></a-text>
    """

    assets, ents = generate_tilemap(files, directory, 8, 8)
    scene += assets + ents + "</a-scene>"

    # apply button or key moves
    cmd = st.session_state.get('camera_move')
    if cmd:
      scene += f"<script>moveCamera('{cmd}');</script>"
      st.session_state.pop('camera_move')

    # loader for OBJ/glTF
    loader = '<script src="https://cdn.jsdelivr.net/npm/aframe-extras@6.1.1/dist/aframe-extras.loaders.min.js"></script>'

    st.components.v1.html(
      load_aframe_and_extras() + loader + scene,
      height=650
    )

if __name__ == "__main__":
    main()