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/
+/lib/
+/bin/
+/.shards/
+*.dwarf
+
+# Libraries don't need dependency lock
+# Dependencies will be locked in applications that use them
+/shard.lock

LICENSE

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+MIT License
+
+Copyright (c) 2026 Tristan Ancelet <tristan.ancelet@acumera.com>
+
+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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+# logger
+
+TODO: Write a description here
+
+## Installation
+
+1. Add the dependency to your `shard.yml`:
+
+   ```yaml
+   dependencies:
+     logger:
+       github: your-github-user/logger
+   ```
+
+2. Run `shards install`
+
+## Usage
+
+```crystal
+require "logger"
+```
+
+TODO: Write usage instructions here
+
+## Development
+
+TODO: Write development instructions here
+
+## Contributing
+
+1. Fork it (<https://github.com/your-github-user/logger/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
+
+- [Tristan Ancelet](https://github.com/your-github-user) - creator and maintainer

shard.yml

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+name: logger
+version: 0.1.0
+
+authors:
+  - Tristan Ancelet <tristan.ancelet@acumera.com>
+
+crystal: '>= 1.19.1'
+
+license: MIT

spec/logger_spec.cr

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

spec/spec_helper.cr

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+require "spec"
+require "../src/logger"

src/logger.cr

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+require "time"
+require "colorize"
+
+module Logger
+
+  annotation LoggerWatcher
+  end
+
+  struct LOG_LEVEL
+    getter value : Int32
+    getter color : Symbol
+    delegate in?, to: @value
+
+    def initialize(@value : Int32, @color : Symbol)
+    end
+
+    {% for op, i in %w[ < > == <= >= ] %}
+    def {{op.id}} (other : LOG_LEVEL)
+      @value {{op.id}} other.value
+    end
+    {% end %}
+  end
+
+  LOG_LEVELS = {
+    DEBUG: LOG_LEVEL.new(value: 0, color: :green),
+    INFO: LOG_LEVEL.new(value: 1, color: :blue),
+    WARN: LOG_LEVEL.new(value: 2, color: :yellow),
+    ERROR: LOG_LEVEL.new(value: 3, color: :red),
+    FATAL: LOG_LEVEL.new(value: 4, color: :red)
+  }
+
+  @@min_level : LOG_LEVEL = LOG_LEVELS[:INFO]
+  @@max_level : LOG_LEVEL = LOG_LEVELS[:FATAL]
+  @@debug : Bool = false
+
+  LOG_MUTEX = ::Mutex.new
+
+  macro generate_log_line(message)
+    {% _def = @def %}
+    {% _class = @type %}
+    {% _type = @type.module? ? "Module" : "Class" %}
+    {% if _class && _class.name.stringify != "Logger" && _def %}
+      "{{_type.id}}({{_class.name.id}})" + " : " + "Method({{_def.name}})" + " : " + {{message}}
+    {% elsif _class && _class.name.stringify != "Logger" %}
+      "{{_type.id}}({{_class.name.id}})" + " : " + {{message}}
+    {% elsif _def %}
+      "Method({{_def.name}})" + " : " + {{message}}
+    {% else %}
+      {{message}}
+    {% end %}
+  end
+
+  macro debug(message)
+    ::Logger.log :DEBUG, Logger.generate_log_line({{message}})
+  end
+
+  macro info(message)
+    ::Logger.log :INFO, Logger.generate_log_line({{message}})
+  end
+
+  macro error(message)
+    ::Logger.log :ERROR, Logger.generate_log_line({{message}})
+  end
+
+  macro warn(message)
+    ::Logger.log :WARN, Logger.generate_log_line({{message}})
+  end
+
+  macro fatal(message)
+    ::Logger.log :FATAL, Logger.generate_log_line({{message}})
+  end
+
+  {% for level, i in %w[ min max ] %}
+  def self.{{level.id}}=(level : Symbol)
+    synchronize {
+      @@{{level.id}}_level = LOG_LEVELS[level] if LOG_LEVELS.keys.includes? level
+    }
+    Logger.debug "Logger : {{level.id}}= : Minimum log level set to #{level}"
+  end
+  {% end %}
+
+  protected def self.synchronize(&block : -> )
+    LOG_MUTEX.synchronize do
+      yield
+    end
+  end
+
+  def self.debug? : Bool
+    LOG_MUTEX.synchronize do
+      @@debug
+    end
+  end
+
+  def self.valid?(level : LOG_LEVEL) : Bool
+    level.in?(@@min_level.value..@@max_level.value)
+  end
+
+  def self.debug= (state : Bool) : Nil
+    synchronize {
+      @@debug = state
+    }
+    Logger.debug "Debug set to #{state}"
+  end
+
+  def self.log(level : Symbol, message : String)
+    _level = LOG_LEVELS[level]
+    if valid?(_level) || debug?
+      synchronize {
+          time = Time.local
+          STDERR.puts [time, level.to_s.colorize(_level.color), message].join(" : ")
+      }
+    end
+  end
+end