from enum import Enum
from typing import Dict, List

__all__ = [
    "Keys",
    "ALL_KEYS",
]


class Keys(str, Enum):
    """
    List of keys for use in key bindings.

    Note that this is an "StrEnum", all values can be compared against
    strings.
    """

    value: str

    Escape = "escape"  # Also Control-[

    ControlAt = "c-@"  # Also Control-Space.

    ControlA = "c-a"
    ControlB = "c-b"
    ControlC = "c-c"
    ControlD = "c-d"
    ControlE = "c-e"
    ControlF = "c-f"
    ControlG = "c-g"
    ControlH = "c-h"
    ControlI = "c-i"  # Tab
    ControlJ = "c-j"  # Newline
    ControlK = "c-k"
    ControlL = "c-l"
    ControlM = "c-m"  # Carriage return
    ControlN = "c-n"
    ControlO = "c-o"
    ControlP = "c-p"
    ControlQ = "c-q"
    ControlR = "c-r"
    ControlS = "c-s"
    ControlT = "c-t"
    ControlU = "c-u"
    ControlV = "c-v"
    ControlW = "c-w"
    ControlX = "c-x"
    ControlY = "c-y"
    ControlZ = "c-z"

    ControlBackslash = "c-\\"
    ControlSquareClose = "c-]"
    ControlCircumflex = "c-^"
    ControlUnderscore = "c-_"

    ControlLeft = "c-left"
    ControlRight = "c-right"
    ControlUp = "c-up"
    ControlDown = "c-down"
    ControlHome = "c-home"
    ControlEnd = "c-end"
    ControlInsert = "c-insert"

    ShiftControlLeft = "s-c-left"
    ShiftControlRight = "s-c-right"
    ShiftControlHome = "s-c-home"
    ShiftControlEnd = "s-c-end"

    Up = "up"
    Down = "down"
    Right = "right"
    Left = "left"

    ShiftLeft = "s-left"
    ShiftUp = "s-up"
    ShiftDown = "s-down"
    ShiftRight = "s-right"
    ShiftDelete = "s-delete"
    BackTab = "s-tab"  # shift + tab
    ShiftHome = "s-home"
    ShiftEnd = "s-end"
    ShiftInsert = "s-insert"

    Home = "home"
    End = "end"
    Delete = "delete"
    ControlDelete = "c-delete"
    PageUp = "pageup"
    PageDown = "pagedown"
    Insert = "insert"

    F1 = "f1"
    F2 = "f2"
    F3 = "f3"
    F4 = "f4"
    F5 = "f5"
    F6 = "f6"
    F7 = "f7"
    F8 = "f8"
    F9 = "f9"
    F10 = "f10"
    F11 = "f11"
    F12 = "f12"
    F13 = "f13"
    F14 = "f14"
    F15 = "f15"
    F16 = "f16"
    F17 = "f17"
    F18 = "f18"
    F19 = "f19"
    F20 = "f20"
    F21 = "f21"
    F22 = "f22"
    F23 = "f23"
    F24 = "f24"

    # Matches any key.
    Any = "<any>"

    # Special.
    ScrollUp = "<scroll-up>"
    ScrollDown = "<scroll-down>"

    CPRResponse = "<cursor-position-response>"
    Vt100MouseEvent = "<vt100-mouse-event>"
    WindowsMouseEvent = "<windows-mouse-event>"
    BracketedPaste = "<bracketed-paste>"

    # For internal use: key which is ignored.
    # (The key binding for this key should not do anything.)
    Ignore = "<ignore>"

    # Some 'Key' aliases (for backwards-compatibility).
    ControlSpace = ControlAt
    Tab = ControlI
    Enter = ControlM
    Backspace = ControlH


ALL_KEYS: List[str] = [k.value for k in Keys]


# Aliases.
KEY_ALIASES: Dict[str, str] = {
    "backspace": "c-h",
    "c-space": "c-@",
    "enter": "c-m",
    "tab": "c-i",
}