"""
File Sharing endpoints (Samba/NFS) – like cockpit-file-sharing
"""

from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from pydantic import BaseModel
from typing import Optional

from services.shares import share_manager
from services.auth import auth_service

router = APIRouter(prefix="/api/shares", tags=["shares"])
security = HTTPBearer()


def get_current_user(credentials: HTTPAuthorizationCredentials = Depends(security)):
    """Verify JWT token and return username"""
    username = auth_service.verify_token(credentials.credentials)
    if not username:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Invalid token"
        )
    return username


class CreateSambaShareRequest(BaseModel):
    name: str
    path: str
    comment: Optional[str] = None


class CreateNFSShareRequest(BaseModel):
    path: str
    clients: str
    options: Optional[str] = None


class SambaConfigRequest(BaseModel):
    parameters: dict[str, str]


class SambaImportRequest(BaseModel):
    config_file: str


# ============== SAMBA ==============

@router.get("/samba")
async def list_samba_shares(current_user: str = Depends(get_current_user)):
    """List all Samba shares"""
    try:
        shares = share_manager.list_samba_shares()
        return {"shares": shares}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/samba")
async def create_samba_share(
    request: CreateSambaShareRequest,
    current_user: str = Depends(get_current_user)
):
    """Create new Samba share"""
    if not request.name.strip() or not request.path.strip():
        raise HTTPException(status_code=400, detail="Name and path are required")
    try:
        success = share_manager.create_samba_share(
            request.name,
            request.path,
            request.comment
        )
        if not success:
            raise HTTPException(status_code=400, detail="Failed to create Samba share")
        return {"status": "created", "name": request.name}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.put("/samba/{name}")
async def update_samba_share(
    name: str,
    request: CreateSambaShareRequest,
    current_user: str = Depends(get_current_user)
):
    """Update Samba share"""
    if not request.name.strip() or not request.path.strip():
        raise HTTPException(status_code=400, detail="Name and path are required")
    try:
        success = share_manager.update_samba_share(
            name,
            request.name,
            request.path,
            request.comment
        )
        if not success:
            raise HTTPException(status_code=404, detail=f"Samba share '{name}' not found")
        return {"status": "updated", "name": request.name}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.delete("/samba/{name}")
async def delete_samba_share(
    name: str,
    current_user: str = Depends(get_current_user)
):
    """Delete Samba share"""
    try:
        success = share_manager.delete_samba_share(name)
        if not success:
            raise HTTPException(status_code=404, detail=f"Samba share '{name}' not found")
        return {"status": "deleted", "name": name}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/samba/config")
async def get_samba_config(current_user: str = Depends(get_current_user)):
    """Get Samba global configuration"""
    try:
        config = share_manager.get_samba_global_config()
        return config
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.put("/samba/config")
async def set_samba_config(
    request: SambaConfigRequest,
    current_user: str = Depends(get_current_user)
):
    """Update Samba global configuration parameters"""
    try:
        success = share_manager.set_samba_global_config(request.parameters)
        if not success:
            raise HTTPException(status_code=400, detail="Failed to update Samba configuration")
        return {"status": "updated"}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/samba/config/import")
async def import_samba_config(
    request: SambaImportRequest,
    current_user: str = Depends(get_current_user)
):
    """Import Samba configuration using net conf import"""
    try:
        success = share_manager.import_samba_config(request.config_file)
        if not success:
            raise HTTPException(status_code=400, detail="Failed to import Samba configuration")
        return {"status": "imported", "config_file": request.config_file}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


# ============== NFS ==============

@router.get("/nfs")
async def list_nfs_shares(current_user: str = Depends(get_current_user)):
    """List all NFS shares"""
    try:
        shares = share_manager.list_nfs_shares()
        return {"shares": shares}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/nfs")
async def create_nfs_share(
    request: CreateNFSShareRequest,
    current_user: str = Depends(get_current_user)
):
    """Create new NFS share"""
    if not request.path.strip() or not request.clients.strip():
        raise HTTPException(status_code=400, detail="Path and clients are required")
    try:
        success = share_manager.create_nfs_share(
            request.path,
            request.clients,
            request.options
        )
        if not success:
            raise HTTPException(status_code=400, detail="Failed to create NFS share")
        return {"status": "created", "path": request.path}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.delete("/nfs")
async def delete_nfs_share(
    path: str = None,
    current_user: str = Depends(get_current_user)
):
    """Delete NFS share"""
    try:
        if not path:
            raise HTTPException(status_code=400, detail="path parameter required")

        success = share_manager.delete_nfs_share(path)
        if not success:
            raise HTTPException(status_code=404, detail=f"NFS share '{path}' not found")
        return {"status": "deleted", "path": path}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/nfs/config")
async def get_nfs_config(current_user: str = Depends(get_current_user)):
    """Get NFS global configuration (/etc/exports)"""
    try:
        config = share_manager.get_nfs_config()
        return config
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.put("/nfs/config")
async def set_nfs_config(
    request: SambaConfigRequest,
    current_user: str = Depends(get_current_user)
):
    """Update NFS global configuration (/etc/exports)"""
    try:
        success = share_manager.set_nfs_config(request.config)
        if not success:
            raise HTTPException(status_code=400, detail="Failed to update NFS configuration")
        return {"status": "updated"}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))