Initial commit

.editorconfig

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+root = true
+
+[*.cr]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true

.gitignore

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+/docs/
+/bin/
+/.shards/
+*.dwarf
+
+/lib/hoop

.travis.yml

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+language: crystal
+
+# Uncomment the following if you'd like Travis to run specs and check code formatting
+# script:
+#   - crystal spec
+#   - crystal tool format --check

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2019 Gabriel Holodak
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# theme-watcher
+
+TODO: Write a description here
+
+## Installation
+
+TODO: Write installation instructions here
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+TODO: Write development instructions here
+
+## Contributing
+
+1. Fork it (<https://github.com/your-github-user/theme-watcher/fork>)
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create a new Pull Request
+
+## Contributors
+
+- [Gabriel Holodak](https://github.com/your-github-user) - creator and maintainer

shard.lock

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+version: 1.0
+shards:
+  hoop:
+    path: ~/code/hoop
+    version: 0
+

shard.yml

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+name: theme-watcher
+version: 0.1.0
+
+authors:
+  - Gabriel Holodak <[email protected]>
+
+targets:
+  theme-watcher:
+    main: src/theme-watcher.cr
+
+dependencies:
+  hoop:
+    path: ~/code/hoop
+
+crystal: 0.31.1
+
+license: MIT

spec/spec_helper.cr

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+require "spec"
+require "../src/theme-watcher"

spec/theme-watcher_spec.cr

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+require "./spec_helper"
+
+describe Theme::Watcher do
+  # TODO: Write tests
+
+  it "works" do
+    false.should eq(true)
+  end
+end

src/ns_extensions.cr

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+require "hoop"
+
+include Hoop
+
+# NSAutoreleasePool.new
+# NSApp.activation_policy = LibAppKit::NSApplicationActivationPolicy::Regular
+
+class NSDistributedNotificationCenter < NSNotificationCenter
+    # register_class
+    # static_method "defaultCenter", nil, "NSDistributedNotificationCenter", "default_center"
+    # TODO: "NSString" should really be "NSNotificationName" but I'm not sure how to make a string pointer
+    # method "addObserver:selector:name:object:", ["id", "SEL", "NSString", "id"], "void", "add_observer"
+end
+
+class NSUserDefaults < NSObject
+  register_class
+  static_method "standardUserDefaults", nil, "NSUserDefaults", "standard_user_defaults"
+  method "stringForKey:", ["NSString"], "SafeString", "string_for_key"
+end
+
+class SafeString
+  @str : String?
+
+  # Necessary to safely handle a *NSString
+  def initialize(ptr : UInt8*)
+    if ptr.null?
+      @str = nil
+    else
+      @str = NSString.new(ptr).to_s
+    end
+  end
+
+  def with_default(default : String) String
+    @str || default
+  end
+end

src/theme-watcher.cr

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+require "hoop"
+require "./ns_extensions"
+
+DARK_THEME = "gruvbox-dark-hard"
+LIGHT_THEME = "one-light"
+
+
+class ShellWriter
+  @zsh : Process
+
+  def initialize
+    pipe_file = File.open(Path["~/color_pipe.txt"].expand, "wb")
+    @zsh = Process.new("zsh", ["-s"],
+                       input: Process::Redirect::Pipe,
+                       output: pipe_file,
+                       error: Process::Redirect::Inherit,
+                      )
+    @zsh.input << %(eval "$($DOTDIR/base16/base16-shell/profile_helper.sh)"\n)
+  end
+
+  def write_theme(theme : String)
+    @zsh.input << "eval base16_#{theme}\n"
+  end
+end
+
+class ThemeHandler < NSObject
+  @writer = ShellWriter.new
+
+  export_class
+  action "theme_changed", "notice", "themeChanged:" do
+    # notification = NSNotification.new(notice)
+
+    case current_theme
+    when /light/i
+      # 🌝 🌞 🌕 🌙 🌜
+      puts("🌕 #{LIGHT_THEME}")
+      @writer.write_theme(LIGHT_THEME)
+    when /dark/i
+      # 🌚 🌑
+      puts("🌑 #{DARK_THEME}")
+      @writer.write_theme(DARK_THEME)
+    else
+      puts("💀 #{current_theme}")
+    end
+  end
+
+  def current_theme : String
+    NSUserDefaults.standard_user_defaults.string_for_key("AppleInterfaceStyle").with_default("Light")
+  end
+end
+
+handler = ThemeHandler.new.to_objc
+dnc = NSDistributedNotificationCenter.default_center
+dnc.add_observer(handler, "themeChanged:", "AppleInterfaceThemeChangedNotification", nil)
+
+puts "running"
+NSApp.run
+puts "done"

src/theme_setter.cr

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+abstract class ThemeSetter
+  abstract def set_theme(theme : String)
+end
+
+class ShellThemeSetter < ThemeSetter
+  @zsh : Process
+
+  def initialize
+    pipe_file = File.open(Path["~/color_pipe.txt"].expand, "wb")
+    @zsh = Process.new("zsh", ["-s"],
+                       input: Process::Redirect::Pipe,
+                       output: pipe_file,
+                       error: Process::Redirect::Inherit,
+                      )
+    @zsh.input << %(eval "$($DOTDIR/base16/base16-shell/profile_helper.sh)"\n)
+  end
+
+  def set_theme(theme : String)
+    @zsh.input << "eval base16_#{theme}\n"
+  end
+end