Rename from Picop to Picopackage

lib/picopackage/cli.rb

@@ -0,0 +1,104 @@
+require "optparse"
+
+module Picopackage
+  class CLI
+    def self.run(argv = ARGV)
+      command = argv.shift
+      case command
+      when 'scan'
+        options = {}
+        OptionParser.new do |opts|
+          opts.banner = "Usage: ppkg scan [options] DIRECTORY"
+          # opts.on('-v', '--verbose', 'Run verbosely') { |v| options[:verbose] = v }
+        end.parse!(argv)
+
+        dir = argv.first || '.'
+        Picopackage::Scanner.scan(dir).each {|f| puts f.file_path }
+
+      when 'sign'
+        OptionParser.new do |opts|
+          opts.banner = "Usage: ppkg sign FILE"
+        end.parse!(argv)
+
+        file = argv.first
+        Picopackage::SourceFile.from_file(file).sign
+
+      when 'checksum'
+        OptionParser.new do |opts|
+          opts.banner = "Usage: ppkg checksum FILE"
+        end.parse!(argv)
+        file = argv.first
+        puts Picopackage::SourceFile.from_file(file).checksum
+
+      when 'verify'
+        OptionParser.new do |opts|
+          opts.banner = "Usage: ppkg sign FILE"
+        end.parse!(argv)
+
+        path = argv.first
+        source = SourceFile.from_file(path)
+
+        if source.metadata['content_checksum'].nil?
+          puts "⚠️  No checksum found in #{path}"
+          puts "Run 'ppkg sign #{path}' to add one"
+          exit 1
+        end
+
+        unless source.verify
+          puts "❌ Checksum verification failed for #{path}"
+          puts "Expected: #{source.metadata['content_checksum']}"
+          puts "Got:      #{source.checksum}"
+          exit 1
+        end
+  
+        puts "✅ #{path} verified successfully"
+
+      when 'inspect'
+        OptionParser.new do |opts|
+          opts.banner = "Usage: ppkg inspect FILE|DIRECTORY"
+        end.parse!(argv)
+
+        path = argv.first
+        Picopackage::SourceFile.from_file(path).inspect
+
+      when 'fetch'
+        options = { force: false }
+        OptionParser.new do |opts|
+          opts.banner = "Usage: ppkg fetch [options] URI [PATH]"
+          opts.on('-f', '--force', 'Force fetch') { |f| options[:force] = f }
+        end.parse!(argv)
+      
+        url = argv.shift
+        path = argv.shift || '.'  # use '.' if no path provided
+      
+        if url.nil?
+          puts "Error: URI is required"
+          exit 1
+        end
+      
+        begin
+          source_file = Fetch.fetch(url, path, force: options[:force])
+        rescue LocalModificationError => e
+          puts "Error: #{e.message}"
+        rescue => e
+          puts "Error: #{e.message}"
+          exit 1
+          # Optionally retry with force
+          # source_file = Fetch.fetch(url, destination, force: true)
+        end
+
+      else
+        puts "Unknown command: #{command}"
+        puts "Available commands: scan, sign, inspect, update"
+        exit 1
+      end
+    rescue OptionParser::InvalidOption => e
+      puts e.message
+      exit 1
+    rescue => e
+      puts "Error: #{e.message}"
+      puts e.backtrace if ENV['DEBUG']
+      exit 1
+    end
+  end
+end