wip

src/musicplayer.gleam

@@ -8,6 +8,7 @@ import musicplayer/ui/ui
 
 pub fn main() -> Nil {
   let input_keys_name: Name(Key) = process.new_name("input_keys")
+  let input_stream_name: Name(List(String)) = process.new_name("input_stream")
 
   // `input_inject` is created by name to allow the `input` process that
   // owns `read_input` to be able to register and receive from it,
@@ -16,13 +17,20 @@ pub fn main() -> Nil {
   let input_inject_name: Name(Key) = process.new_name("input_inject_keys")
 
   // TODO should input.new just return the inject_subject?
-  input.new(input_keys_name, input_inject_name)
+  input.new(input_keys_name, input_stream_name, input_inject_name)
 
   let assert Ok(ui) = ui.new()
   let assert Ok(mpv) = mpv.new()
 
   let exit = process.new_subject()
   let assert Ok(_) =
-    musicplayer.new(ui, mpv, input_keys_name, input_inject_name, exit)
+    musicplayer.new(
+      ui,
+      mpv,
+      input_keys_name,
+      input_stream_name,
+      input_inject_name,
+      exit,
+    )
   process.receive_forever(exit)
 }

src/musicplayer/control.gleam

@@ -2,16 +2,13 @@ import musicplayer/input/key.{type Key}
 
 pub type Control {
   TogglePlayPause
-
-  Input(String)
-  Search(List(String))
+  Search
 
   Exit
 }
 
 pub fn from_key(key: Key) -> Result(Control, Nil) {
   case key {
-    key.Input(content) -> Ok(Input(content))
     key.Char(char) -> char_control(char)
     _ -> Error(Nil)
   }
@@ -20,7 +17,7 @@ pub fn from_key(key: Key) -> Result(Control, Nil) {
 fn char_control(char: String) -> Result(Control, Nil) {
   case char {
     " " -> Ok(TogglePlayPause)
-    "/" -> Ok(Search([]))
+    "/" -> Ok(Search)
     "q" -> Ok(Exit)
     _ -> Error(Nil)
   }

src/musicplayer/input/input.gleam

@@ -1,4 +1,4 @@
-import gleam/erlang/process.{type Name}
+import gleam/erlang/process.{type Name, type Subject}
 
 import musicplayer/input/key.{type Key}
 
@@ -10,17 +10,38 @@ import musicplayer/input/key.{type Key}
 /// and
 ///   - a subject name that is used to create a `Subject` that other processes
 ///     know they can inject a `Key` into the input with
-pub fn new(input_keys_name: Name(Key), input_inject_name: Name(Key)) -> Nil {
+pub fn new(
+  input_keys_name: Name(Key),
+  input_stream_name: Name(List(String)),
+  input_inject_name: Name(Key),
+) -> Nil {
   let _ =
     process.spawn(fn() {
       let input_keys = process.named_subject(input_keys_name)
+      let input_stream = process.named_subject(input_stream_name)
       let input_inject = process.named_subject(input_inject_name)
 
       let assert Ok(_) = process.register(process.self(), input_inject_name)
 
-      key.read_input_until_key(input_keys, input_inject)
+      read_input(input_keys, input_stream, input_inject)
     })
 
   key.start_raw_shell()
   Nil
 }
+
+fn read_input(
+  input_keys: Subject(Key),
+  input_stream: Subject(List(String)),
+  input_inject: Subject(Key),
+) -> Nil {
+  let buffer = case process.receive(input_inject, 1) {
+    Ok(key.Continue(buffer)) -> buffer
+    Ok(_) | Error(_) -> []
+  }
+
+  key.read_input_until_key(buffer, input_stream)
+  |> process.send(input_keys, _)
+
+  read_input(input_keys, input_stream, input_inject)
+}

src/musicplayer/input/key.gleam

@@ -61,19 +61,9 @@ pub fn start_raw_shell() {
 }
 
 pub fn read_input_until_key(
-  input_keys: Subject(Key),
-  input_inject: Subject(Key),
-) -> Nil {
-  case process.receive(input_inject, 1) {
-    Ok(Continue(buffer)) -> buffer
-    Ok(_) | Error(_) -> []
-  }
-  |> forward_input_to(input_keys)
-
-  read_input_until_key(input_keys, input_inject)
-}
-
-pub fn forward_input_to(l: List(String), input_keys: Subject(Key)) -> Nil {
+  l: List(String),
+  input_stream: Subject(List(String)),
+) -> Key {
   case
     internal_input.read_input()
     |> list.wrap
@@ -81,14 +71,9 @@ pub fn forward_input_to(l: List(String), input_keys: Subject(Key)) -> Nil {
     |> from_list
   {
     Continue(l) -> {
-      case l {
-        [ii, cmd] if ii == input_introducer -> {
-          process.send(input_keys, Continue([cmd]))
-          forward_input_to(l, input_keys)
+      process.send(input_stream, l)
+      read_input_until_key(l, input_stream)
     }
-        _ -> forward_input_to(l, input_keys)
-      }
-    }
-    k -> process.send(input_keys, k)
+    k -> k
   }
 }

src/musicplayer/musicplayer.gleam

@@ -1,14 +1,14 @@
 import gleam/erlang/process.{type Name, type Subject}
+import gleam/float
 import gleam/otp/actor
 import gleam/result
 import gleam/string
-import musicplayer/time/time
 
 import musicplayer/control.{type Control}
 import musicplayer/input/key.{type Key}
 import musicplayer/mpv/control as mpv_control
 import musicplayer/ui/control as ui_control
-import musicplayer/ui/layout
+import musicplayer/ui/section
 
 type State(ui, mpv, input_inject, exit) {
   State(
@@ -23,10 +23,12 @@ pub fn new(
   ui: Subject(ui_control.Control),
   mpv: Subject(mpv_control.Control),
   input_keys_name: Name(Key),
+  input_stream_name: Name(List(String)),
   input_inject_name: Name(Key),
   exit: Subject(Nil),
 ) -> Result(Nil, String) {
   let input_keys = process.named_subject(input_keys_name)
+  let input_stream = process.named_subject(input_stream_name)
   let input_inject = process.named_subject(input_inject_name)
 
   case
@@ -42,7 +44,10 @@ pub fn new(
         handle_key(musicplayer, input_keys)
       })
 
-      process.spawn(fn() { update_playback_time_loop(mpv, ui, 1000) })
+      process.spawn(fn() {
+        let assert Ok(_) = process.register(process.self(), input_stream_name)
+        temp_input_stream(input_stream)
+      })
 
       Ok(Nil)
     }
@@ -54,25 +59,40 @@ fn handle_message(
   control: Control,
 ) -> actor.Next(State(ui, mpv, input_inject, exit), Control) {
   case control {
-    control.Search([]) -> {
+    control.Search -> {
       process.send(state.input_inject, key.Continue([key.input_introducer]))
-      update_search(state.ui, "searching: ")
-      actor.continue(state)
-    }
-    control.Search(content) -> {
-      update_search(state.ui, "searching: " <> string.join(content, ""))
-      actor.continue(state)
-    }
-    control.Input(_) -> {
-      update_search(state.ui, "")
-      actor.continue(state)
-    }
 
+      actor.continue(state)
+    }
     control.TogglePlayPause -> {
       echo "toggling play/pause"
 
       process.send(state.mpv, mpv_control.TogglePlayPause)
-      update_playback_time(state.mpv, state.ui)
+
+      case
+        process.call(state.mpv, 1000, fn(reply_to) {
+          mpv_control.GetPlaybackTime(reply_to)
+        })
+      {
+        Error(err) ->
+          process.send(
+            state.ui,
+            ui_control.UpdateState(
+              section.PlaybackTime,
+              "playback time: N/A (err: " <> err.details <> ")",
+            ),
+          )
+
+        Ok(mpv_control.PlaybackTime(data: playback_time)) ->
+          process.send(
+            state.ui,
+            ui_control.UpdateState(
+              section.PlaybackTime,
+              "playback time: " <> float.to_string(playback_time),
+            ),
+          )
+      }
+
       actor.continue(state)
     }
     control.Exit -> {
@@ -89,66 +109,19 @@ fn handle_message(
   }
 }
 
-fn update_playback_time_loop(
-  mpv: Subject(mpv_control.Control),
-  ui: Subject(ui_control.Control),
-  interval_ms: Int,
-) {
-  process.sleep(interval_ms)
-  update_playback_time(mpv, ui)
-
-  update_playback_time_loop(mpv, ui, interval_ms)
-}
-
-fn update_playback_time(
-  mpv: Subject(mpv_control.Control),
-  ui: Subject(ui_control.Control),
-) -> Nil {
-  case
-    process.call(mpv, 1000, fn(reply_to) {
-      mpv_control.GetPlaybackTime(reply_to)
-    })
-  {
-    Error(err) ->
-      process.send(
-        ui,
-        ui_control.UpdateState(
-          layout.PlaybackTime,
-          "playback time: N/A (err: " <> err.details <> ")",
-        ),
-      )
-
-    Ok(mpv_control.PlaybackTime(data: playback_time)) ->
-      process.send(
-        ui,
-        ui_control.UpdateState(
-          layout.PlaybackTime,
-          "playback time: " <> time.to_duration_string(playback_time),
-        ),
-      )
-  }
-}
-
-fn update_search(ui: Subject(ui_control.Control), content: String) -> Nil {
-  process.send(ui, ui_control.UpdateState(layout.Search, content))
-}
-
 /// `handle_key` listens to a subject onto which `input` will send messages with
 /// parsed `Key`s which will be mapped to `Control`s (if possible)
 fn handle_key(musicplayer: Subject(Control), input_keys: Subject(Key)) -> Nil {
-  let _ = case
-    process.new_selector()
-    |> process.select(input_keys)
-    |> process.selector_receive_forever
-  {
-    key.Continue(buffer:) ->
-      Ok(process.send(musicplayer, control.Search(buffer)))
-
-    key ->
-      key
+  let _ =
+    process.receive_forever(input_keys)
     |> control.from_key
     |> result.map(process.send(musicplayer, _))
-  }
 
   handle_key(musicplayer, input_keys)
 }
+
+fn temp_input_stream(input_stream: Subject(List(String))) -> Nil {
+  let stream = process.receive_forever(input_stream)
+  echo "input stream: " <> string.inspect(stream)
+  temp_input_stream(input_stream)
+}

src/musicplayer/time/time.gleam

@@ -1,23 +0,0 @@
-import gleam/float
-import gleam/int
-import gleam/string
-
-pub fn to_duration_string(seconds: Float) -> String {
-  let total =
-    seconds
-    |> float.max(0.0)
-    |> float.truncate
-
-  let minutes = total / 60
-  let seconds = total % 60
-
-  let mins =
-    int.to_string(minutes)
-    |> string.pad_start(to: 2, with: "0")
-
-  let secs =
-    int.to_string(seconds)
-    |> string.pad_start(to: 2, with: "0")
-
-  mins <> ":" <> secs
-}

src/musicplayer/ui/control.gleam

@@ -1,6 +1,6 @@
 import gleam/erlang/process.{type Subject}
 
-import musicplayer/ui/layout.{type Section}
+import musicplayer/ui/section.{type Section}
 
 pub type Control {
   UpdateState(section: Section, content: String)

src/musicplayer/ui/internal.gleam

@@ -1,4 +1,3 @@
-import gleam/int
 import gleam/io
 
 pub fn print(content: String) -> Nil {
@@ -11,11 +10,6 @@ pub fn clear_screen() -> Nil {
   io.print("\u{001B}[2J\u{001B}[H")
 }
 
-pub fn print_at(text: String, x: Int, y: Int) -> Nil {
-  let seq = "\u{001B}[" <> int.to_string(y) <> ";" <> int.to_string(x) <> "H"
-  io.print(seq <> text)
-}
-
 pub fn hide_cursor() -> Nil {
   io.print("\u{001B}[?25l")
 }

src/musicplayer/ui/layout.gleam

@@ -1,51 +0,0 @@
-import gleam/dict
-
-pub type Layout {
-  Layout(nodes: dict.Dict(Section, Node))
-}
-
-pub type Section {
-  Root
-  Header
-  Search
-  PlaybackTime
-}
-
-pub type Node {
-  Node(content: String, x: Int, y: Int, children: List(Section))
-}
-
-pub fn new() -> Layout {
-  let nodes =
-    dict.from_list([
-      #(
-        Root,
-        Node(content: "", x: 0, y: 0, children: [
-          Header,
-          Search,
-          PlaybackTime,
-        ]),
-      ),
-      #(Header, Node(content: "Music Player", x: 1, y: 1, children: [])),
-      #(Search, Node(content: "", x: 30, y: 1, children: [])),
-      #(PlaybackTime, Node(content: "00:00", x: 1, y: 2, children: [])),
-    ])
-
-  Layout(nodes: nodes)
-}
-
-pub fn update_section(
-  layout: Layout,
-  section: Section,
-  content: String,
-) -> Layout {
-  case dict.get(layout.nodes, section) {
-    Error(_) -> layout
-    Ok(node) ->
-      Layout(nodes: dict.insert(
-        layout.nodes,
-        section,
-        Node(..node, content: content),
-      ))
-  }
-}

src/musicplayer/ui/section.gleam

@@ -0,0 +1,13 @@
+import gleam/dict
+
+pub type Section {
+  Header
+  PlaybackTime
+}
+
+pub type Content {
+  Content(content: String)
+}
+
+pub type SectionContent =
+  dict.Dict(Section, Content)

src/musicplayer/ui/ui.gleam

@@ -1,25 +1,28 @@
 import gleam/dict
 import gleam/erlang/process.{type Subject}
-import gleam/list
 import gleam/otp/actor
 import gleam/string
 
 import musicplayer/ui/control.{type Control}
 import musicplayer/ui/internal as ui_internal
-import musicplayer/ui/layout.{type Layout, type Section}
+import musicplayer/ui/section.{type Section, type SectionContent, Content}
 
 pub type State(redraw, content) {
-  State(redraw: Subject(Layout), layout: Layout)
+  State(redraw: Subject(SectionContent), sections: SectionContent)
 }
 
 pub fn new() -> Result(Subject(Control), String) {
   let redraw_name = process.new_name("redraw")
-  let redraw: Subject(Layout) = process.named_subject(redraw_name)
+  let redraw: Subject(String) = process.named_subject(redraw_name)
 
-  let layout = layout.new()
+  let sections =
+    dict.from_list([
+      #(section.Header, Content("musicplayer:")),
+      #(section.PlaybackTime, Content("")),
+    ])
 
   case
-    actor.new(State(redraw, layout))
+    actor.new(State(redraw, sections))
     |> actor.on_message(handle_message)
     |> actor.start
   {
@@ -32,7 +35,7 @@ pub fn new() -> Result(Subject(Control), String) {
         ui_internal.clear_screen()
         ui_internal.hide_cursor()
 
-        redraw_on_update_loop(redraw)
+        redraw_loop(redraw)
       })
 
       Ok(ui)
@@ -41,15 +44,15 @@ pub fn new() -> Result(Subject(Control), String) {
 }
 
 fn handle_message(
-  state: State(redraw, layout),
+  state: State(redraw, content),
   control: Control,
-) -> actor.Next(State(redraw, layout), Control) {
+) -> actor.Next(State(redraw, content), Control) {
   case control {
     control.UpdateState(section, content) -> {
-      let layout = layout.update_section(state.layout, section, content)
-      let state = State(..state, layout:)
+      let content = dict.insert(state.content, section, content)
+      let state = State(..state, content:)
 
-      actor.send(state.redraw, layout)
+      actor.send(state.redraw, content)
       actor.continue(state)
     }
 
@@ -61,21 +64,11 @@ fn handle_message(
   }
 }
 
-fn redraw_on_update_loop(redraw: Subject(Layout)) -> Nil {
-  let layout = process.receive_forever(redraw)
+fn redraw_loop(redraw: Subject(SectionContent)) -> Nil {
+  let content = process.receive_forever(redraw)
 
   ui_internal.clear_screen()
-  render_layout(layout, layout.Root)
+  ui_internal.print(content)
 
-  redraw_on_update_loop(redraw)
-}
-
-fn render_layout(layout: Layout, from: Section) -> Nil {
-  case dict.get(layout.nodes, from) {
-    Error(_) -> Nil
-    Ok(node) -> {
-      list.each(node.children, fn(child) { render_layout(layout, child) })
-      ui_internal.print_at(node.content, node.x, node.y)
-    }
-  }
+  redraw_loop(redraw)
 }

test/musicplayer/time/time_test.gleam

@@ -1,32 +0,0 @@
-import gleam/list
-import gleeunit
-
-import musicplayer/time/time
-
-pub fn main() -> Nil {
-  gleeunit.main()
-}
-
-type TestCase {
-  TestCase(seconds: Float, expected: String)
-}
-
-pub fn to_duration_string_test() {
-  let test_cases = [
-    TestCase(-1.0, "00:00"),
-    TestCase(0.0, "00:00"),
-    TestCase(9.0, "00:09"),
-    TestCase(10.0, "00:10"),
-    TestCase(11.0, "00:11"),
-    TestCase(60.0, "01:00"),
-    TestCase(61.0, "01:01"),
-    TestCase(120.0, "02:00"),
-    TestCase(600.0, "10:00"),
-    TestCase(6000.0, "100:00"),
-    TestCase(6001.0, "100:01"),
-  ]
-
-  list.each(test_cases, fn(tc) {
-    assert tc.expected == time.to_duration_string(tc.seconds)
-  })
-}