Extract mpv/key to input

To separate the concern from `mpv`

src/mpv/control.gleam

@@ -2,8 +2,8 @@ import gleam/json
 import gleam/result
 import gleam/string
 
+import input/key.{type Key, Char}
 import mpv/internal/control as internal_control
-import mpv/key.{type Key, Char}
 import tcp/reason.{type Reason}
 import tcp/tcp.{type Socket}
 

src/mpv/internal/key.gleam

@@ -1,15 +0,0 @@
-import gleam/erlang/atom
-
-pub fn read_input() -> String {
-  io_get_chars("", 1)
-}
-
-pub type NotUsed
-
-// https://www.erlang.org/doc/apps/stdlib/shell.html#start_interactive/1
-@external(erlang, "shell", "start_interactive")
-pub fn shell_start_interactive(options: #(atom.Atom, atom.Atom)) -> NotUsed
-
-// https://www.erlang.org/doc/apps/stdlib/io.html#get_line/1
-@external(erlang, "io", "get_chars")
-fn io_get_chars(prompt: String, count: Int) -> String

src/mpv/key.gleam

@@ -1,53 +0,0 @@
-import gleam/erlang/atom
-import gleam/list
-
-import mpv/internal/key as internal_key
-
-pub type Key {
-  Char(String)
-
-  Left
-  Right
-  Up
-  Down
-
-  Continue
-  Unknown
-}
-
-pub const esc = "\u{001B}"
-
-// control sequence introducer
-pub const csi = "["
-
-pub fn from_list(l: List(String)) -> Key {
-  case l {
-    [e, c, "D"] if e == esc && c == csi -> Left
-    [e, c, "C"] if e == esc && c == csi -> Right
-    [e, c, "A"] if e == esc && c == csi -> Up
-    [e, c, "B"] if e == esc && c == csi -> Down
-
-    [e, c] if e == esc && c == csi -> Continue
-
-    [e] if e == esc -> Continue
-    [char] -> Char(char)
-
-    [] -> Continue
-    _ -> Unknown
-  }
-}
-
-pub fn start_raw_shell() {
-  let no_shell = atom.create("noshell")
-  let raw = atom.create("raw")
-  internal_key.shell_start_interactive(#(no_shell, raw))
-}
-
-pub fn read_input_until_key(l: List(String)) -> Key {
-  let l = internal_key.read_input() |> list.wrap |> list.append(l, _)
-
-  case from_list(l) {
-    Continue -> read_input_until_key(l)
-    k -> k
-  }
-}

src/mpv/mpv.gleam

@@ -4,8 +4,8 @@ import gleam/otp/actor
 import gleam/result
 import gleam/string
 
+import input/key
 import mpv/control.{type Control}
-import mpv/key
 import tcp/reason
 import tcp/tcp.{type Socket}