use super::*;

#[derive(
    Debug,
    Copy,
    Clone,
    PartialEq,
    Eq,
    Hash,
    Serialize,
    Deserialize,
    strum::EnumString,
    strum::Display,
)]
pub enum MouseButton {
    Left,
    Middle,
    Right,
}

#[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize)]
pub struct Touch {
    pub id: u64,
    // TODO force
    pub position: vec2<f64>,
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub enum Event {
    MousePress { button: MouseButton },
    MouseRelease { button: MouseButton },
    CursorMove { position: vec2<f64> },
    RawMouseMove { delta: vec2<f64> },
    Wheel { delta: f64 },
    TouchStart(Touch),
    TouchMove(Touch),
    TouchEnd(Touch),
    KeyPress { key: Key },
    KeyRelease { key: Key },
    EditText(String),
    Draw,
    CloseRequested,
    Focused(bool),
}

impl Event {
    pub fn translate(&self, delta: vec2<f64>) -> Self {
        let mut result = self.clone();
        use Event::*;
        match result {
            CursorMove {
                ref mut position, ..
            } => *position += delta,
            TouchStart(ref mut touch) | TouchMove(ref mut touch) | TouchEnd(ref mut touch) => {
                touch.position += delta;
            }
            _ => {}
        }
        result
    }
}

#[derive(
    Debug,
    Copy,
    Clone,
    PartialEq,
    Eq,
    Hash,
    Serialize,
    Deserialize,
    strum::EnumString,
    strum::Display,
)]
#[non_exhaustive]
pub enum Key {
    /// <kbd>`</kbd> on a US keyboard. This is also called a backtick or grave.
    /// This is the <kbd>半角</kbd>/<kbd>全角</kbd>/<kbd>漢字</kbd>
    /// (hankaku/zenkaku/kanji) key on Japanese keyboards
    Backquote,
    /// Used for both the US <kbd>\\</kbd> (on the 101-key layout) and also for the key
    /// located between the <kbd>"</kbd> and <kbd>Enter</kbd> keys on row C of the 102-,
    /// 104- and 106-key layouts.
    /// Labeled <kbd>#</kbd> on a UK (102) keyboard.
    Backslash,
    /// <kbd>[</kbd> on a US keyboard.
    BracketLeft,
    /// <kbd>]</kbd> on a US keyboard.
    BracketRight,
    /// <kbd>,</kbd> on a US keyboard.
    Comma,
    /// <kbd>0</kbd> on a US keyboard.
    Digit0,
    /// <kbd>1</kbd> on a US keyboard.
    Digit1,
    /// <kbd>2</kbd> on a US keyboard.
    Digit2,
    /// <kbd>3</kbd> on a US keyboard.
    Digit3,
    /// <kbd>4</kbd> on a US keyboard.
    Digit4,
    /// <kbd>5</kbd> on a US keyboard.
    Digit5,
    /// <kbd>6</kbd> on a US keyboard.
    Digit6,
    /// <kbd>7</kbd> on a US keyboard.
    Digit7,
    /// <kbd>8</kbd> on a US keyboard.
    Digit8,
    /// <kbd>9</kbd> on a US keyboard.
    Digit9,
    /// <kbd>=</kbd> on a US keyboard.
    Equal,
    /// Located between the left <kbd>Shift</kbd> and <kbd>Z</kbd> keys.
    /// Labeled <kbd>\\</kbd> on a UK keyboard.
    IntlBackslash,
    /// Located between the <kbd>/</kbd> and right <kbd>Shift</kbd> keys.
    /// Labeled <kbd>\\</kbd> (ro) on a Japanese keyboard.
    IntlRo,
    /// Located between the <kbd>=</kbd> and <kbd>Backspace</kbd> keys.
    /// Labeled <kbd>¥</kbd> (yen) on a Japanese keyboard. <kbd>\\</kbd> on a
    /// Russian keyboard.
    IntlYen,
    /// <kbd>a</kbd> on a US keyboard.
    /// Labeled <kbd>q</kbd> on an AZERTY (e.g., French) keyboard.
    A,
    /// <kbd>b</kbd> on a US keyboard.
    B,
    /// <kbd>c</kbd> on a US keyboard.
    C,
    /// <kbd>d</kbd> on a US keyboard.
    D,
    /// <kbd>e</kbd> on a US keyboard.
    E,
    /// <kbd>f</kbd> on a US keyboard.
    F,
    /// <kbd>g</kbd> on a US keyboard.
    G,
    /// <kbd>h</kbd> on a US keyboard.
    H,
    /// <kbd>i</kbd> on a US keyboard.
    I,
    /// <kbd>j</kbd> on a US keyboard.
    J,
    /// <kbd>k</kbd> on a US keyboard.
    K,
    /// <kbd>l</kbd> on a US keyboard.
    L,
    /// <kbd>m</kbd> on a US keyboard.
    M,
    /// <kbd>n</kbd> on a US keyboard.
    N,
    /// <kbd>o</kbd> on a US keyboard.
    O,
    /// <kbd>p</kbd> on a US keyboard.
    P,
    /// <kbd>q</kbd> on a US keyboard.
    /// Labeled <kbd>a</kbd> on an AZERTY (e.g., French) keyboard.
    Q,
    /// <kbd>r</kbd> on a US keyboard.
    R,
    /// <kbd>s</kbd> on a US keyboard.
    S,
    /// <kbd>t</kbd> on a US keyboard.
    T,
    /// <kbd>u</kbd> on a US keyboard.
    U,
    /// <kbd>v</kbd> on a US keyboard.
    V,
    /// <kbd>w</kbd> on a US keyboard.
    /// Labeled <kbd>z</kbd> on an AZERTY (e.g., French) keyboard.
    W,
    /// <kbd>x</kbd> on a US keyboard.
    X,
    /// <kbd>y</kbd> on a US keyboard.
    /// Labeled <kbd>z</kbd> on a QWERTZ (e.g., German) keyboard.
    Y,
    /// <kbd>z</kbd> on a US keyboard.
    /// Labeled <kbd>w</kbd> on an AZERTY (e.g., French) keyboard, and <kbd>y</kbd> on a
    /// QWERTZ (e.g., German) keyboard.
    Z,
    /// <kbd>-</kbd> on a US keyboard.
    Minus,
    /// <kbd>.</kbd> on a US keyboard.
    Period,
    /// <kbd>'</kbd> on a US keyboard.
    Quote,
    /// <kbd>;</kbd> on a US keyboard.
    Semicolon,
    /// <kbd>/</kbd> on a US keyboard.
    Slash,
    /// <kbd>Alt</kbd>, <kbd>Option</kbd>, or <kbd>⌥</kbd>.
    AltLeft,
    /// <kbd>Alt</kbd>, <kbd>Option</kbd>, or <kbd>⌥</kbd>.
    /// This is labeled <kbd>AltGr</kbd> on many keyboard layouts.
    AltRight,
    /// <kbd>Backspace</kbd> or <kbd>⌫</kbd>.
    /// Labeled <kbd>Delete</kbd> on Apple keyboards.
    Backspace,
    /// <kbd>CapsLock</kbd> or <kbd>⇪</kbd>
    CapsLock,
    /// The application context menu key, which is typically found between the right
    /// <kbd>Super</kbd> key and the right <kbd>Control</kbd> key.
    ContextMenu,
    /// <kbd>Control</kbd> or <kbd>⌃</kbd>
    ControlLeft,
    /// <kbd>Control</kbd> or <kbd>⌃</kbd>
    ControlRight,
    /// <kbd>Enter</kbd> or <kbd>↵</kbd>. Labeled <kbd>Return</kbd> on Apple keyboards.
    Enter,
    /// The Windows, <kbd>⌘</kbd>, <kbd>Command</kbd>, or other OS symbol key.
    SuperLeft,
    /// The Windows, <kbd>⌘</kbd>, <kbd>Command</kbd>, or other OS symbol key.
    SuperRight,
    /// <kbd>Shift</kbd> or <kbd>⇧</kbd>
    ShiftLeft,
    /// <kbd>Shift</kbd> or <kbd>⇧</kbd>
    ShiftRight,
    /// <kbd> </kbd> (space)
    Space,
    /// <kbd>Tab</kbd> or <kbd>⇥</kbd>
    Tab,
    /// <kbd>⌦</kbd>. The forward delete key.
    /// Note that on Apple keyboards, the key labelled <kbd>Delete</kbd> on the main part of
    /// the keyboard is encoded as [`Backspace`].
    ///
    /// [`Backspace`]: Self::Backspace
    Delete,
    /// <kbd>Page Down</kbd>, <kbd>End</kbd>, or <kbd>↘</kbd>
    End,
    /// <kbd>Help</kbd>. Not present on standard PC keyboards.
    Help,
    /// <kbd>Home</kbd> or <kbd>↖</kbd>
    Home,
    /// <kbd>Insert</kbd> or <kbd>Ins</kbd>. Not present on Apple keyboards.
    Insert,
    /// <kbd>Page Down</kbd>, <kbd>PgDn</kbd>, or <kbd>⇟</kbd>
    PageDown,
    /// <kbd>Page Up</kbd>, <kbd>PgUp</kbd>, or <kbd>⇞</kbd>
    PageUp,
    /// <kbd>↓</kbd>
    ArrowDown,
    /// <kbd>←</kbd>
    ArrowLeft,
    /// <kbd>→</kbd>
    ArrowRight,
    /// <kbd>↑</kbd>
    ArrowUp,
    /// On the Mac, this is used for the numpad <kbd>Clear</kbd> key.
    NumLock,
    /// <kbd>0 Ins</kbd> on a keyboard. <kbd>0</kbd> on a phone or remote control
    Numpad0,
    /// <kbd>1 End</kbd> on a keyboard. <kbd>1</kbd> or <kbd>1 QZ</kbd> on a phone or remote control
    Numpad1,
    /// <kbd>2 ↓</kbd> on a keyboard. <kbd>2 ABC</kbd> on a phone or remote control
    Numpad2,
    /// <kbd>3 PgDn</kbd> on a keyboard. <kbd>3 DEF</kbd> on a phone or remote control
    Numpad3,
    /// <kbd>4 ←</kbd> on a keyboard. <kbd>4 GHI</kbd> on a phone or remote control
    Numpad4,
    /// <kbd>5</kbd> on a keyboard. <kbd>5 JKL</kbd> on a phone or remote control
    Numpad5,
    /// <kbd>6 →</kbd> on a keyboard. <kbd>6 MNO</kbd> on a phone or remote control
    Numpad6,
    /// <kbd>7 Home</kbd> on a keyboard. <kbd>7 PQRS</kbd> or <kbd>7 PRS</kbd> on a phone
    /// or remote control
    Numpad7,
    /// <kbd>8 ↑</kbd> on a keyboard. <kbd>8 TUV</kbd> on a phone or remote control
    Numpad8,
    /// <kbd>9 PgUp</kbd> on a keyboard. <kbd>9 WXYZ</kbd> or <kbd>9 WXY</kbd> on a phone
    /// or remote control
    Numpad9,
    /// <kbd>+</kbd>
    NumpadAdd,
    /// Found on the Microsoft Natural Keyboard.
    NumpadBackspace,
    /// <kbd>C</kbd> or <kbd>A</kbd> (All Clear). Also for use with numpads that have a
    /// <kbd>Clear</kbd> key that is separate from the <kbd>NumLock</kbd> key. On the Mac, the
    /// numpad <kbd>Clear</kbd> key is encoded as [`NumLock`].
    ///
    /// [`NumLock`]: Self::NumLock
    NumpadClear,
    /// <kbd>C</kbd> (Clear Entry)
    NumpadClearEntry,
    /// <kbd>,</kbd> (thousands separator). For locales where the thousands separator
    /// is a "." (e.g., Brazil), this key may generate a <kbd>.</kbd>.
    NumpadComma,
    /// <kbd>. Del</kbd>. For locales where the decimal separator is "," (e.g.,
    /// Brazil), this key may generate a <kbd>,</kbd>.
    NumpadDecimal,
    /// <kbd>/</kbd>
    NumpadDivide,
    NumpadEnter,
    /// <kbd>=</kbd>
    NumpadEqual,
    /// <kbd>#</kbd> on a phone or remote control device. This key is typically found
    /// below the <kbd>9</kbd> key and to the right of the <kbd>0</kbd> key.
    NumpadHash,
    /// <kbd>M</kbd> Add current entry to the value stored in memory.
    NumpadMemoryAdd,
    /// <kbd>M</kbd> Clear the value stored in memory.
    NumpadMemoryClear,
    /// <kbd>M</kbd> Replace the current entry with the value stored in memory.
    NumpadMemoryRecall,
    /// <kbd>M</kbd> Replace the value stored in memory with the current entry.
    NumpadMemoryStore,
    /// <kbd>M</kbd> Subtract current entry from the value stored in memory.
    NumpadMemorySubtract,
    /// <kbd>*</kbd> on a keyboard. For use with numpads that provide mathematical
    /// operations (<kbd>+</kbd>, <kbd>-</kbd> <kbd>*</kbd> and <kbd>/</kbd>).
    ///
    /// Use `NumpadStar` for the <kbd>*</kbd> key on phones and remote controls.
    NumpadMultiply,
    /// <kbd>(</kbd> Found on the Microsoft Natural Keyboard.
    NumpadParenLeft,
    /// <kbd>)</kbd> Found on the Microsoft Natural Keyboard.
    NumpadParenRight,
    /// <kbd>*</kbd> on a phone or remote control device.
    ///
    /// This key is typically found below the <kbd>7</kbd> key and to the left of
    /// the <kbd>0</kbd> key.
    ///
    /// Use <kbd>"NumpadMultiply"</kbd> for the <kbd>*</kbd> key on
    /// numeric keypads.
    NumpadStar,
    /// <kbd>-</kbd>
    NumpadSubtract,
    /// <kbd>Esc</kbd> or <kbd>⎋</kbd>
    Escape,
    /// Some laptops place this key to the left of the <kbd>↑</kbd> key.
    ///
    /// This also the "back" button (triangle) on Android.
    Back,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F1,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F2,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F3,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F4,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F5,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F6,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F7,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F8,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F9,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F10,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F11,
    /// General-purpose function key.
    /// Usually found at the top of the keyboard.
    F12,
}