//!
//! Access to the system clipboard allowing to copy and paste images from
//! and to other applications.
//!
//! # Synopsis
//! ```
//! // get the system clipboard
//! let clipboard = nw::clipboard::get();
//!
//! //read available types of data in clipboard currently
//! let types = clip.get_available_types();
//! log_info!("clipboard data types: {:?}", types);
//!
//! // write text data to clipboard
//! clip.set("Hello");
//!
//! // read text data from clipboard
//! let text = clip.get();
//!
//! ```

use crate::options::OptionsTrait;
use crate::result::Result;
use js_sys::{Array, Object};
use wasm_bindgen::prelude::*;

#[wasm_bindgen]
extern "C" {

    ///
    /// Interface for interacting with the system clipboard. For usage example please refer to [nw_sys::clipboard](self)
    ///

    #[wasm_bindgen(js_namespace=nw, js_name = Clipboard)]
    #[derive(Debug, Clone)]
    pub type Clipboard;

    #[wasm_bindgen(js_namespace=["nw", "Clipboard"], js_name = get)]
    fn get_impl() -> Clipboard;

    #[wasm_bindgen(method, js_name = set)]
    /// Write `data` of type string to the clipboard.
    /// This method will clear the clipboard and replace with the given data.
    /// Hence another call to this method will overwrite with the new one.
    /// To write multiple types of data to clipboard simultaneously,
    /// you will need to use [clip.set(clipboardDataList)](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddatalist) below.
    ///
    /// - data: the data to write to the clipboard
    ///  
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    ///
    pub fn set(this: &Clipboard, data: &str);

    #[wasm_bindgen(method, js_name = set)]
    /// Write `data` of `type` to the clipboard.
    /// This method will clear the clipboard and replace with the given data.
    /// Hence another call to this method will overwrite with the new one.
    /// To write multiple types of data to clipboard simultaneously,
    /// you will need to use [clip.set(clipboardDataList)](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddatalist) below.
    ///
    /// - data: the data to write to the clipboard
    /// - data_type: the type of the data. Support text, png, jpeg, html and rtf. By default, type is set to "text".
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    ///
    pub fn set_with_data_type(this: &Clipboard, data: &str, data_type: &str);

    #[wasm_bindgen(method, js_name = set)]
    /// Write `data` of `type` to the clipboard.
    /// This method will clear the clipboard and replace with the given data.
    /// Hence another call to this method will overwrite with the new one.
    /// To write multiple types of data to clipboard simultaneously,
    /// you will need to use [clip.set(clipboardDataList)](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddatalist) below.
    ///
    /// - data: the data to write to the clipboard
    /// - data_type: the type of the data. Support text, png, jpeg, html and rtf. By default, type is set to "text".
    /// - raw: requiring raw image data. This option is only valid if type is png or jpeg. By default, raw is set to false.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    ///
    pub fn set_with_data_type_and_raw(this: &Clipboard, data: &str, data_type: &str, raw: bool);

    #[wasm_bindgen(method, js_name = set)]
    /// Write data of type to the clipboard.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddata)
    ///
    pub fn set_data(this: &Clipboard, data: DataWrite);

    #[wasm_bindgen(method, js_name = set)]
    /// Write data of type to the clipboard.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddata)
    ///
    fn set_data_array_impl(this: &Clipboard, data: Array);

    #[wasm_bindgen(method, js_name = get)]
    /// Get the data
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipgettype-raw)
    ///
    pub fn get(this: &Clipboard) -> String;

    #[wasm_bindgen(method, js_name = get)]
    /// Get the data of type
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipgettype-raw)
    ///
    pub fn get_with_data_type(this: &Clipboard, data_type: &str) -> String;

    #[wasm_bindgen(method, js_name = get)]
    /// Get the data of type and as raw
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipgettype-raw)
    ///
    pub fn get_with_data_type_and_raw(this: &Clipboard, data_type: &str, raw: bool) -> String;

    #[wasm_bindgen(method, js_name = get)]
    /// Get the data
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipgetclipboarddata)
    ///
    pub fn get_data(this: &Clipboard, data: DataRead) -> String;

    #[wasm_bindgen(method, js_name = get)]
    fn get_data_array_impl(this: &Clipboard, data: Array) -> Array;

    #[wasm_bindgen(method, js_name = readAvailableTypes)]
    fn get_available_types_impl(this: &Clipboard) -> Array;

    #[wasm_bindgen(method)]
    /// Clear the clipboard.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipclear)
    ///
    pub fn clear(this: &Clipboard);

    #[wasm_bindgen(extends = Object)]
    #[derive(Debug, Clone, PartialEq, Eq)]
    /// A object containing
    /// [`data`](Self#method.data),
    /// [`type`](Self#method.data_type) and
    /// [`raw`](Self#method.raw) to be written to clipboard
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddata)
    ///
    pub type DataWrite;

    #[wasm_bindgen(extends = Object)]
    #[derive(Debug, Clone, PartialEq, Eq)]
    /// A object containing
    /// [`type`](Self#method.data_type) and
    /// [`raw`](Self#method.raw) for reading from clipboard
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipgetclipboarddata)
    ///
    pub type DataRead;
}

/// Returns the `Clipboard` object
///
/// **Note:**
/// The Selection Clipboard in X11 is not supported.
///
/// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipboardget)
///
pub fn get() -> Clipboard {
    Clipboard::get_impl()
}

impl Clipboard {
    /// Write data of type to the clipboard.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetclipboarddata)
    ///
    pub fn set_data_array(&self, list: Vec<DataWrite>) {
        let data_array = Array::new();
        for d in list {
            data_array.push(&JsValue::from(d));
        }
        self.set_data_array_impl(data_array);
    }

    /// Get the data as `Vector<Option<String>`
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipgetclipboarddatalist)
    ///
    pub fn get_data_array(&self, list: Vec<DataRead>) -> Result<Vec<Option<String>>> {
        let data_array = Array::new();
        for d in list {
            data_array.push(&JsValue::from(d));
        }
        let array = self.get_data_array_impl(data_array);
        let mut result = Vec::new();
        for index in 0..array.length() {
            let data = array.get(index);
            let data = js_sys::Reflect::get(&data, &JsValue::from("data"))?;
            result.push(data.as_string());
        }

        Ok(result)
    }

    /// Returns list of available types of data in clipboard currently.
    ///
    /// ### Each item is one of following types:
    /// - text: plain text. Can be read by [clip.get_with_data_type("text")](self::Clipboard#method.get_with_data_type).
    /// - html: HTML text. Can be read by [clip.get_with_data_type("html")](self::Clipboard#method.get_with_data_type).
    /// - rtf: RTF (Rich Text Format). Can be read by [clip.get_with_data_type("rtf")](self::Clipboard#method.get_with_data_type).
    /// - png: PNG image. Can be read by [clip.get_with_data_type("png")](self::Clipboard#method.get_with_data_type).
    /// - jpeg: JPEG image. Can be read by [clip.get_with_data_type("jpeg")](self::Clipboard#method.get_with_data_type).
    ///
    /// You can use the returned list as a suggestion to get the right data from clipboard.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipreadavailabletypes)
    ///
    pub fn get_available_types(&self) -> Vec<String> {
        let array = self.get_available_types_impl();
        let mut result = Vec::new();
        for index in 0..array.length() {
            if let Some(v) = array.get(index).as_string() {
                result.push(v);
            }
        }

        result
    }
}

impl OptionsTrait for DataWrite {
    fn initialize(self) -> Self {
        self.data_type("text").raw(false)
    }
}
impl OptionsTrait for DataRead {}

impl DataWrite {
    /// The data to write to the clipboard
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    pub fn data(self, data: &str) -> Self {
        self.set("data", JsValue::from(data))
    }

    /// The type of the data.
    /// Support text, png, jpeg, html and rtf.
    ///
    /// By default, type is set to "text".
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    pub fn data_type(self, data_type: &str) -> Self {
        self.set("type", JsValue::from(data_type))
    }

    /// Requiring raw image data.
    /// This option is only valid if type is png or jpeg.
    ///
    /// By default, raw is set to false.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    pub fn raw(self, raw: bool) -> Self {
        self.set("raw", JsValue::from(raw))
    }
}

impl DataRead {
    /// The type of the data.
    /// Support text, png, jpeg, html and rtf.
    ///
    /// By default, type is set to "text".
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    pub fn data_type(self, data_type: &str) -> Self {
        self.set("type", JsValue::from(data_type))
    }

    /// Requiring raw image data.
    /// This option is only valid if type is png or jpeg.
    ///
    /// By default, raw is set to false.
    ///
    /// ⧉ [NWJS Documentation](https://docs.nwjs.io/en/latest/References/Clipboard/#clipsetdata-type-raw)
    pub fn raw(self, raw: bool) -> Self {
        self.set("raw", JsValue::from(raw))
    }
}

impl From<(String, Option<bool>)> for DataRead {
    fn from(info: (String, Option<bool>)) -> Self {
        let option = Self::new().data_type(&info.0);
        if let Some(raw) = info.1 {
            option.raw(raw)
        } else {
            option
        }
    }
}