#[cfg(feature = "async-vfs")]
use super::webdav::VfsDavFs;
#[cfg(feature = "async-vfs")]
use dav_server::davpath::DavPath;
#[cfg(feature = "async-vfs")]
use dav_server::fs::{
    DavDirEntry, DavFile, DavFileSystem, DavMetaData, DavProp, FsError, FsFuture, FsStream,
    OpenOptions, ReadDirMeta,
};
#[cfg(feature = "async-vfs")]
use http::StatusCode;
#[cfg(feature = "async-vfs")]
use std::future::Future;
#[cfg(feature = "async-vfs")]
use std::pin::Pin;
#[cfg(feature = "async-vfs")]
use std::sync::Arc;
#[cfg(feature = "async-vfs")]
use std::time::SystemTime;

#[cfg(feature = "async-vfs")]
pub struct AsyncVfsDavFs {
    inner: Arc<VfsDavFs>,
    runtime: Arc<tokio::runtime::Runtime>,
}

#[cfg(feature = "async-vfs")]
impl AsyncVfsDavFs {
    pub fn new(inner: VfsDavFs) -> Self {
        Self {
            inner: Arc::new(inner),
            runtime: Arc::new(tokio::runtime::Runtime::new().unwrap()),
        }
    }

    fn block_on<F: Future>(&self, fut: F) -> F::Output {
        self.runtime.block_on(fut)
    }
}

#[cfg(feature = "async-vfs")]
impl Clone for AsyncVfsDavFs {
    fn clone(&self) -> Self {
        Self {
            inner: self.inner.clone(),
            runtime: self.runtime.clone(),
        }
    }
}

#[cfg(feature = "async-vfs")]
impl DavFileSystem for AsyncVfsDavFs {
    fn open<'a>(&'a self, path: &'a DavPath, options: OpenOptions) -> FsFuture<'a, Box<dyn DavFile>> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.open(&path, options);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn read_dir<'a>(&'a self, path: &'a DavPath, meta: ReadDirMeta) -> FsFuture<'a, FsStream<Box<dyn DavDirEntry>>> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.read_dir(&path, meta);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn metadata<'a>(&'a self, path: &'a DavPath) -> FsFuture<'a, Box<dyn DavMetaData>> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.metadata(&path);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn create_dir<'a>(&'a self, path: &'a DavPath) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.create_dir(&path);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn remove_dir<'a>(&'a self, path: &'a DavPath) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.remove_dir(&path);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn remove_file<'a>(&'a self, path: &'a DavPath) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.remove_file(&path);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn rename<'a>(&'a self, from: &'a DavPath, to: &'a DavPath) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let from = from.clone();
        let to = to.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.rename(&from, &to);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn copy<'a>(&'a self, from: &'a DavPath, to: &'a DavPath) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let from = from.clone();
        let to = to.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.copy(&from, &to);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn set_accessed<'a>(&'a self, path: &'a DavPath, tm: SystemTime) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.set_accessed(&path, tm);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn set_modified<'a>(&'a self, path: &'a DavPath, tm: SystemTime) -> FsFuture<'a, ()> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.set_modified(&path, tm);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn get_props<'a>(&'a self, path: &'a DavPath, do_content: bool) -> FsFuture<'a, Vec<DavProp>> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.get_props(&path, do_content);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn get_prop<'a>(&'a self, path: &'a DavPath, prop: DavProp) -> FsFuture<'a, Vec<u8>> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.get_prop(&path, prop);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn patch_props<'a>(&'a self, path: &'a DavPath, patch: Vec<(bool, DavProp)>) -> FsFuture<'a, Vec<(StatusCode, DavProp)>> {
        let inner = self.inner.clone();
        let path = path.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.patch_props(&path, patch);
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }

    fn have_props<'a>(&'a self, path: &'a DavPath) -> Pin<Box<dyn Future<Output = bool> + Send + 'a>> {
        self.inner.have_props(path)
    }

    fn get_quota(&self) -> FsFuture<'_, (u64, Option<u64>)> {
        let inner = self.inner.clone();
        Box::pin(async move {
            tokio::task::spawn_blocking(move || {
                let fut = inner.get_quota();
                tokio::runtime::Runtime::new().unwrap().block_on(fut)
            }).await.map_err(|_| FsError::GeneralFailure)?
        })
    }
}