cli: add "amber exec" command for executing one-liners (#352)

spec/amber/cli/commands/exec_spec.cr

@@ -0,0 +1,57 @@
+# {% if flag?(:run_build_tests) %}
+require "../../../spec_helper"
+require "../../../support/helpers/cli_helper"
+
+include CLIHelper
+
+module Amber::CLI
+  describe "amber exec" do
+    context "within project" do
+      cleanup
+      scaffold_app(TESTING_APP)
+      `shards`
+
+      it "executes one-liners from the first command-line argument" do
+        expected_result = "[:a, :b, :c, :d]\n"
+        MainCommand.run(["exec", "[:a, :b, :c] + [:d]"])
+        logs = `ls tmp/*_console_result.log`.strip.split(/\s/).sort
+        File.read(logs.last?.to_s).should eq expected_result
+      end
+
+      it "executes a .cr file from the first command-line argument" do
+        File.write "amber_exec_spec_test.cr", "puts([:a] + [:b])"
+        MainCommand.run(["exec", "amber_exec_spec_test.cr", "-e", "tail"])
+        logs = `ls tmp/*_console_result.log`.strip.split(/\s/).sort
+        File.read(logs.last?.to_s).should eq "[:a, :b]\n"
+        File.delete("amber_exec_spec_test.cr")
+      end
+
+      it "opens editor and executes .cr file on close" do
+        MainCommand.run(["exec", "-e", "echo 'puts 1000' > "])
+        logs = `ls tmp/*_console_result.log`.strip.split(/\s/).sort
+        File.read(logs.last?.to_s).should eq "1000\n"
+      end
+
+      it "copies previous run into new file for editing and runs it returning results" do
+        MainCommand.run(["exec", "1337"])
+        MainCommand.run(["exec", "-e", "tail", "-b", "1"])
+        logs = `ls tmp/*_console_result.log`.strip.split(/\s/).sort
+        File.read(logs.last?.to_s).should eq "1337\n"
+      end
+
+      cleanup
+    end
+
+    context "outside of project" do
+      it "complains if not in the root of a project" do
+        expected_result = "Error: 'amber exec' can only be used from the root of a valid amber project"
+        MainCommand.run(["exec", ":hello"])
+        logs = `ls tmp/*_console_result.log`.strip.split(/\s/).sort
+        File.read(logs.last?.to_s).should eq expected_result
+      end
+
+      cleanup
+    end
+  end
+end
+# {% end %}

spec/amber/dsl/server_spec.cr

@@ -3,7 +3,6 @@ require "../../../spec_helper"
 module Amber
   module DSL
     describe Server do
-
       describe "pipeline" do
         context "generating a single ':custom' pipeline" do
           server = Amber::Server.instance
@@ -26,7 +25,6 @@ module Amber
             plugs.should_not be nil
             (plugs.map(&.class).should eq expected) if plugs
           end
-
         end
 
         context "generating a single pipeline with multiple calls" do
@@ -121,9 +119,7 @@ module Amber
             (plugs.map(&.class).should eq expected) if plugs
           end
         end
-
       end
     end
-
   end
 end

src/amber/cli/commands/exec.cr

@@ -0,0 +1,53 @@
+require "cli"
+
+module Amber::CLI
+  class MainCommand < ::Cli::Supercommand
+    command "x", aliased: "exec"
+
+    class Exec < ::Cli::Command
+      command_name "exec"
+      @filename = "./tmp/#{Time.now.epoch}_console.cr"
+
+      class Options
+        arg "code", desc: "Crystal code or .cr file to execute within the application scope", default: ""
+        string ["-e", "--editor"], desc: "Prefered editor: [vim, nano, pico, etc], only used when no code or .cr file is specified", default: "vim"
+        string ["-b", "--back"], desc: "Runs prevous command files: 'amber exec -b [times_ago]'", default: "0"
+      end
+
+      class Help
+        caption "# It runs Crystal code within the application scope"
+      end
+
+      def prepare_file
+        _filename = if File.exists?(args.code)
+                      args.code
+                    elsif options.back.to_i(strict: false) > 0
+                      Dir.glob("./tmp/*_console.cr").reverse[options.back.to_i(strict: false) - 1]?
+                    end
+
+        system("cp #{_filename} #{@filename}") if _filename
+      end
+
+      def run
+        Dir.mkdir("tmp") unless Dir.exists?("tmp")
+
+        unless args.code.blank? || File.exists?(args.code)
+          File.write(@filename, "puts (#{args.code}).inspect")
+        else
+          prepare_file
+          system("#{options.editor} #{@filename}")
+        end
+
+        result = ""
+        result = `crystal eval 'require "./config/*"; require "#{@filename}"'` if File.exists?(@filename)
+
+        if result.includes?("while requiring \"./config/*\": can't find file './config/*' relative to '.'")
+          result = "Error: 'amber exec' can only be used from the root of a valid amber project"
+        end
+
+        File.write(@filename.sub("console.cr", "console_result.log"), result) unless result.blank?
+        puts result
+      end
+    end
+  end
+end

src/amber/cli/templates/app/.gitignore

@@ -3,6 +3,7 @@
 /.crystal/
 /.shards/
 /.vscode/
+/tmp/
 .env
 .amber_secret_key
 production.yml

src/amber/scripts/environment_loader.cr

@@ -38,7 +38,7 @@ str = String.build do |s|
   s.puts %(@port_reuse = #{settings["port_reuse"]? == nil ? true : settings["port_reuse"]})
   s.puts %(@process_count = #{settings["process_count"]? || 1})
   s.puts %(@log = #{settings["log"]? || "::Logger.new(STDOUT)"}.tap{|l| l.level = #{settings["log_level"]? || "::Logger::INFO"}})
-  #s.puts %(@log.level = #{settings["log_level"]? || "::Logger::INFO"})
+  # s.puts %(@log.level = #{settings["log_level"]? || "::Logger::INFO"})
   s.puts %(@color = #{settings["color"]? == nil ? true : settings["color"]})
   s.puts %(@redis_url = "#{settings["redis_url"]? || "redis://localhost:6379"}")
   s.puts %(@port = #{settings["port"]? || 3000})

src/amber/server/configuration.cr

@@ -6,7 +6,7 @@ module Amber
       def self.instance
         @@instance ||= new
       end
-      
+
       # Configure should probably be deprecated in favor of settings.
       def self.configure
         with settings yield settings