// use crate::utils::{CloneableFnWithArg, FilterOptions};
// use crate::{
//     filter_builder_methods, use_event_listener, watch_pausable_with_options, DebounceOptions,
//     ThrottleOptions, WatchOptions, WatchPausableReturn,
// };
// use default_struct_builder::DefaultBuilder;
// use js_sys::Reflect;
// use leptos::*;
// use serde::{Deserialize, Serialize};
// use serde_json::Error;
// use std::time::Duration;
// use wasm_bindgen::{JsCast, JsValue};
//
// const CUSTOM_STORAGE_EVENT_NAME: &str = "leptos-use-storage";
//
// /// Reactive [LocalStorage](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage) / [SessionStorage](https://developer.mozilla.org/en-US/docs/Web/API/Window/sessionStorage)
// ///
// /// ## Demo
// ///
// /// [Link to Demo](https://github.com/Synphonyte/leptos-use/tree/main/examples/use_storage)
// ///
// /// ## Usage
// ///
// /// It returns a triplet `(read_signal, write_signal, delete_from_storage_func)` of type `(Signal<T>, WriteSignal<T>, Fn())`.
// ///
// /// ```
// /// # use leptos::*;
// /// # use leptos_use::storage::{StorageType, use_storage, use_storage_with_options, UseStorageOptions};
// /// # use serde::{Deserialize, Serialize};
// /// #
// /// #[derive(Serialize, Deserialize, Clone)]
// /// pub struct MyState {
// ///     pub hello: String,
// ///     pub greeting: String,
// /// }
// /// #
// /// # pub fn Demo(cx: Scope) -> impl IntoView {
// /// // bind struct. Must be serializable.
// /// let (state, set_state, _) = use_storage(
// ///     cx,
// ///     "my-state",
// ///     MyState {
// ///         hello: "hi".to_string(),
// ///         greeting: "Hello".to_string()
// ///     },
// /// ); // returns Signal<MyState>
// ///
// /// // bind bool.
// /// let (flag, set_flag, remove_flag) = use_storage(cx, "my-flag", true); // returns Signal<bool>
// ///
// /// // bind number
// /// let (count, set_count, _) = use_storage(cx, "my-count", 0); // returns Signal<i32>
// ///
// /// // bind string with SessionStorage
// /// let (id, set_id, _) = use_storage_with_options(
// ///     cx,
// ///     "my-id",
// ///     "some_string_id".to_string(),
// ///     UseStorageOptions::default().storage_type(StorageType::Session),
// /// );
// /// #    view! { cx, }
// /// # }
// /// ```
// ///
// /// ## Merge Defaults
// ///
// /// By default, [`use_storage`] will use the value from storage if it is present and ignores the default value.
// /// Be aware that when you add more properties to the default value, the key might be `None`
// /// (in the case of an `Option<T>` field) if client's storage does not have that key
// /// or deserialization might fail altogether.
// ///
// /// Let's say you had a struct `MyState` that has been saved to storage
// ///
// /// ```ignore
// /// #[derive(Serialize, Deserialize, Clone)]
// /// struct MyState {
// ///     hello: String,
// /// }
// ///
// /// let (state, .. ) = use_storage(cx, "my-state", MyState { hello: "hello" });
// /// ```
// ///
// /// Now, in a newer version you added a field `greeting` to `MyState`.
// ///
// /// ```ignore
// /// #[derive(Serialize, Deserialize, Clone)]
// /// struct MyState {
// ///     hello: String,
// ///     greeting: String,
// /// }
// ///
// /// let (state, .. ) = use_storage(
// ///     cx,
// ///     "my-state",
// ///     MyState { hello: "hi", greeting: "whatsup" },
// /// ); // fails to deserialize -> default value
// /// ```
// ///
// /// This will fail to deserialize the stored string `{"hello": "hello"}` because it has no field `greeting`.
// /// Hence it just uses the new default value provided and the previously saved value is lost.
// ///
// /// To mitigate that you can provide a `merge_defaults` option. This is a pure function pointer
// /// that takes the serialized (to json) stored value and the default value as arguments
// /// and should return the serialized merged value.
// ///
// /// ```
// /// # use leptos::*;
// /// # use leptos_use::storage::{use_storage_with_options, UseStorageOptions};
// /// # use serde::{Deserialize, Serialize};
// /// #
// /// #[derive(Serialize, Deserialize, Clone)]
// /// pub struct MyState {
// ///     pub hello: String,
// ///     pub greeting: String,
// /// }
// /// #
// /// # pub fn Demo(cx: Scope) -> impl IntoView {
// /// let (state, set_state) = use_storage_with_options(
// ///     cx,
// ///     "my-state",
// ///     MyState {
// ///         hello: "hi".to_string(),
// ///         greeting: "Hello".to_string()
// ///     },
// ///     UseStorageOptions::<MyState>::default().merge_defaults(|stored_value, default_value| {
// ///         if stored_value.contains(r#""greeting":"#) {
// ///             stored_value.to_string()
// ///         } else {
// ///             // add "greeting": "Hello" to the string
// ///             stored_value.replace("}", &format!(r#""greeting": "{}"}}"#, default_value.greeting))
// ///         }
// ///     }),
// /// );
// /// #
// /// #    view! { cx, }
// /// # }
// /// ```
// ///
// /// ## Filter Storage Write
// ///
// /// You can specify `debounce` and `throttle` filter options for writing to storage.
// ///
// /// ## See also
// ///
// ///
// /// * [`use_local_storage`]
// /// * [`use_session_storage`]
// #[doc(cfg(feature = "storage"))]
// pub fn use_storage<T, D>(
//     cx: Scope,
//     key: &str,
//     defaults: D,
// ) -> (Signal<T>, WriteSignal<Option<T>>, impl Fn() + Clone)
// where
//     for<'de> T: Serialize + Deserialize<'de> + Clone + 'static,
//     D: Into<MaybeSignal<T>>,
//     T: Clone,
// {
//     use_storage_with_options(cx, key, defaults, UseStorageOptions::default())
// }
//
// /// Version of [`use_storage`] that accepts [`UseStorageOptions`]. See [`use_storage`] for how to use.
// #[doc(cfg(feature = "storage"))]
// pub fn use_storage_with_options<T, D>(
//     cx: Scope,
//     key: &str,
//     defaults: D,
//     options: UseStorageOptions<T>,
// ) -> (Signal<T>, WriteSignal<Option<T>>, impl Fn() + Clone)
// where
//     for<'de> T: Serialize + Deserialize<'de> + Clone + 'static,
//     D: Into<MaybeSignal<T>>,
//     T: Clone,
// {
//     let defaults = defaults.into();
//
//     let UseStorageOptions {
//         storage_type,
//         listen_to_storage_changes,
//         write_defaults,
//         merge_defaults,
//         on_error,
//         filter,
//     } = options;
//
//     let (data, set_data) = create_signal(cx, defaults.get_untracked());
//
//     let storage = storage_type.into_storage();
//
//     let remove = match storage {
//         Ok(Some(storage)) => {
//             let on_err = on_error.clone();
//
//             let store = storage.clone();
//             let k = key.to_string();
//
//             let write = move |v: &Option<T>| {
//                 if let Some(v) = v {
//                     match serde_json::to_string(&v) {
//                         Ok(ref serialized) => match store.get_item(&k) {
//                             Ok(old_value) => {
//                                 if old_value.as_ref() != Some(serialized) {
//                                     if let Err(e) = store.set_item(&k, &serialized) {
//                                         on_err(UseStorageError::StorageAccessError(e));
//                                     } else {
//                                         let mut event_init = web_sys::CustomEventInit::new();
//                                         event_init.detail(
//                                             &StorageEventDetail {
//                                                 key: Some(k.clone()),
//                                                 old_value,
//                                                 new_value: Some(serialized.clone()),
//                                                 storage_area: Some(store.clone()),
//                                             }
//                                             .into(),
//                                         );
//
//                                         // importantly this should _not_ be a StorageEvent since those cannot
//                                         // be constructed with a non-built-in storage area
//                                         let _ = window().dispatch_event(
//                                             &web_sys::CustomEvent::new_with_event_init_dict(
//                                                 CUSTOM_STORAGE_EVENT_NAME,
//                                                 &event_init,
//                                             )
//                                             .expect("Failed to create CustomEvent"),
//                                         );
//                                     }
//                                 }
//                             }
//                             Err(e) => {
//                                 on_err.clone()(UseStorageError::StorageAccessError(e));
//                             }
//                         },
//                         Err(e) => {
//                             on_err.clone()(UseStorageError::SerializationError(e));
//                         }
//                     }
//                 } else if let Err(e) = store.remove_item(&k) {
//                     on_err(UseStorageError::StorageAccessError(e));
//                 }
//             };
//
//             let store = storage.clone();
//             let on_err = on_error.clone();
//             let k = key.to_string();
//             let def = defaults.clone();
//
//             let read = move |event_detail: Option<StorageEventDetail>| -> Option<T> {
//                 let raw_init = match serde_json::to_string(&def.get_untracked()) {
//                     Ok(serialized) => Some(serialized),
//                     Err(e) => {
//                         on_err.clone()(UseStorageError::DefaultSerializationError(e));
//                         None
//                     }
//                 };
//
//                 let raw_value = if let Some(event_detail) = event_detail {
//                     event_detail.new_value
//                 } else {
//                     match store.get_item(&k) {
//                         Ok(raw_value) => match raw_value {
//                             Some(raw_value) => {
//                                 Some(merge_defaults(&raw_value, &def.get_untracked()))
//                             }
//                             None => raw_init.clone(),
//                         },
//                         Err(e) => {
//                             on_err.clone()(UseStorageError::StorageAccessError(e));
//                             None
//                         }
//                     }
//                 };
//
//                 match raw_value {
//                     Some(raw_value) => match serde_json::from_str(&raw_value) {
//                         Ok(v) => Some(v),
//                         Err(e) => {
//                             on_err.clone()(UseStorageError::SerializationError(e));
//                             None
//                         }
//                     },
//                     None => {
//                         if let Some(raw_init) = &raw_init {
//                             if write_defaults {
//                                 if let Err(e) = store.set_item(&k, raw_init) {
//                                     on_err(UseStorageError::StorageAccessError(e));
//                                 }
//                             }
//                         }
//
//                         Some(def.get_untracked())
//                     }
//                 }
//             };
//
//             let WatchPausableReturn {
//                 pause: pause_watch,
//                 resume: resume_watch,
//                 ..
//             } = watch_pausable_with_options(
//                 cx,
//                 data,
//                 move |data, _, _| write.clone()(data),
//                 WatchOptions::default().immediate(true).filter(filter),
//             );
//
//             let k = key.to_string();
//
//             let update = move |event_detail: Option<StorageEventDetail>| {
//                 if let Some(event_detail) = &event_detail {
//                     if event_detail.storage_area != Some(storage) {
//                         return;
//                     }
//
//                     match &event_detail.key {
//                         None => {
//                             set_data(Some(defaults.get_untracked()));
//                             return;
//                         }
//                         Some(event_key) => {
//                             if event_key != &k {
//                                 return;
//                             }
//                         }
//                     };
//                 }
//
//                 pause_watch();
//
//                 set_data(read(event_detail.clone()));
//
//                 if event_detail.is_some() {
//                     // use timeout to avoid inifinite loop
//                     let resume = resume_watch.clone();
//                     let _ = set_timeout_with_handle(resume, Duration::ZERO);
//                 } else {
//                     resume_watch();
//                 }
//             };
//
//             let upd = update.clone();
//             let update_from_custom_event =
//                 move |event: web_sys::CustomEvent| upd.clone()(Some(event.into()));
//
//             let upd = update.clone();
//             let update_from_storage_event =
//                 move |event: web_sys::StorageEvent| upd.clone()(Some(event.into()));
//
//             if listen_to_storage_changes {
//                 let _ = use_event_listener(cx, window(), ev::storage, update_from_storage_event);
//                 let _ = use_event_listener(
//                     cx,
//                     window(),
//                     ev::Custom::new(CUSTOM_STORAGE_EVENT_NAME),
//                     update_from_custom_event,
//                 );
//             }
//
//             update(None);
//
//             move || storage.remove_item(&k)
//         }
//         Err(e) => {
//             on_error(UseStorageError::NoStorage(e));
//             move || {}
//         }
//         _ => {
//             // do nothing
//             move || {}
//         }
//     };
//
//     (data, set_data, remove)
// }
//
// #[derive(Clone)]
// pub struct StorageEventDetail {
//     pub key: Option<String>,
//     pub old_value: Option<String>,
//     pub new_value: Option<String>,
//     pub storage_area: Option<web_sys::Storage>,
// }
//
// impl From<web_sys::StorageEvent> for StorageEventDetail {
//     fn from(event: web_sys::StorageEvent) -> Self {
//         Self {
//             key: event.key(),
//             old_value: event.old_value(),
//             new_value: event.new_value(),
//             storage_area: event.storage_area(),
//         }
//     }
// }
//
// impl From<web_sys::CustomEvent> for StorageEventDetail {
//     fn from(event: web_sys::CustomEvent) -> Self {
//         let detail = event.detail();
//         Self {
//             key: get_optional_string(&detail, "key"),
//             old_value: get_optional_string(&detail, "oldValue"),
//             new_value: get_optional_string(&detail, "newValue"),
//             storage_area: Reflect::get(&detail, &"storageArea".into())
//                 .map(|v| v.dyn_into::<web_sys::Storage>().ok())
//                 .unwrap_or_default(),
//         }
//     }
// }
//
// impl From<StorageEventDetail> for JsValue {
//     fn from(event: StorageEventDetail) -> Self {
//         let obj = js_sys::Object::new();
//
//         let _ = Reflect::set(&obj, &"key".into(), &event.key.into());
//         let _ = Reflect::set(&obj, &"oldValue".into(), &event.old_value.into());
//         let _ = Reflect::set(&obj, &"newValue".into(), &event.new_value.into());
//         let _ = Reflect::set(&obj, &"storageArea".into(), &event.storage_area.into());
//
//         obj.into()
//     }
// }
//
// fn get_optional_string(v: &JsValue, key: &str) -> Option<String> {
//     Reflect::get(v, &key.into())
//         .map(|v| v.as_string())
//         .unwrap_or_default()
// }
//
// /// Error type for use_storage_with_options
// #[doc(cfg(feature = "storage"))]
// pub enum UseStorageError<E = ()> {
//     NoStorage(JsValue),
//     StorageAccessError(JsValue),
//     CustomStorageAccessError(E),
//     SerializationError(Error),
//     DefaultSerializationError(Error),
// }
//
// /// Options for [`use_storage_with_options`].
// #[doc(cfg(feature = "storage"))]
// #[derive(DefaultBuilder)]
// pub struct UseStorageOptions<T> {
//     /// Type of storage. Can be `Local` (default), `Session` or `Custom(web_sys::Storage)`
//     storage_type: StorageType,
//     /// Listen to changes to this storage key from somewhere else. Defaults to true.
//     listen_to_storage_changes: bool,
//     /// If no value for the give key is found in the storage, write it. Defaults to true.
//     write_defaults: bool,
//     /// Takes the serialized (json) stored value and the default value and returns a merged version.
//     /// Defaults to simply returning the stored value.
//     merge_defaults: fn(&str, &T) -> String,
//     /// Optional callback whenever an error occurs. The callback takes an argument of type [`UseStorageError`].
//     on_error: Box<dyn CloneableFnWithArg<UseStorageError>>,
//
//     /// Debounce or throttle the writing to storage whenever the value changes.
//     filter: FilterOptions,
// }
//
// impl<T> Default for UseStorageOptions<T> {
//     fn default() -> Self {
//         Self {
//             storage_type: Default::default(),
//             listen_to_storage_changes: true,
//             write_defaults: true,
//             merge_defaults: |stored_value, _default_value| stored_value.to_string(),
//             on_error: Box::new(|_| ()),
//             filter: Default::default(),
//         }
//     }
// }
//
// impl<T> UseStorageOptions<T> {
//     filter_builder_methods!(
//         /// the serializing and storing into storage
//         filter
//     );
// }
//
// /// Local or session storage or a custom store that is a `web_sys::Storage`.
// #[doc(cfg(feature = "storage"))]
// #[derive(Default)]
// pub enum StorageType {
//     #[default]
//     Local,
//     Session,
//     Custom(web_sys::Storage),
// }
//
// impl StorageType {
//     pub fn into_storage(self) -> Result<Option<web_sys::Storage>, JsValue> {
//         match self {
//             StorageType::Local => window().local_storage(),
//             StorageType::Session => window().session_storage(),
//             StorageType::Custom(storage) => Ok(Some(storage)),
//         }
//     }
// }