# Copyright 2015 Dominik Richter

require "inspec/utils/deprecation/deprecator"
require "inspec/dist"
require "inspec/backend"
require "inspec/dependencies/cache"
require "inspec/utils/json_profile_summary"
require "inspec/utils/yaml_profile_summary"

module Inspec # TODO: move this somewhere "better"?
  autoload :BaseCLI,       "inspec/base_cli"
  autoload :Deprecation,   "inspec/utils/deprecation"
  autoload :Exceptions,    "inspec/exceptions"
  autoload :EnvPrinter,    "inspec/env_printer"
  autoload :Fetcher,       "inspec/fetcher"
  autoload :Formatters,    "inspec/formatters"
  autoload :Globals,       "inspec/globals"
  autoload :Impact,        "inspec/impact"
  autoload :Impact,        "inspec/impact"
  autoload :InputRegistry, "inspec/input_registry"
  autoload :Profile,       "inspec/profile"
  autoload :Reporters,     "inspec/reporters"
  autoload :Resource,      "inspec/resource"
  autoload :Rule,          "inspec/rule"
  autoload :Runner,        "inspec/runner"
  autoload :Runner,        "inspec/runner"
  autoload :Shell,         "inspec/shell"
  autoload :SourceReader,  "inspec/source_reader"
  autoload :Telemetry,     "inspec/utils/telemetry"
  autoload :V1,            "inspec/plugin/v1"
  autoload :V2,            "inspec/plugin/v2"
  autoload :VERSION,       "inspec/version"
end

class Inspec::InspecCLI < Inspec::BaseCLI
  class_option :log_level, aliases: :l, type: :string,
               desc: "Set the log level: info (default), debug, warn, error"

  class_option :log_location, type: :string,
               desc: "Location to send diagnostic log messages to. (default: $stdout or Inspec::Log.error)"

  class_option :diagnose, type: :boolean,
    desc: "Show diagnostics (versions, configurations)"

  class_option :color, type: :boolean,
    desc: "Use colors in output."

  class_option :interactive, type: :boolean,
    desc: "Allow or disable user interaction"

  class_option :disable_core_plugins, type: :string, banner: "", # Actually a boolean, but this suppresses the creation of a --no-disable...
    desc: "Disable loading all plugins that are shipped in the lib/plugins directory of InSpec. Useful in development.",
    hide: true

  class_option :disable_user_plugins, type: :string, banner: "",
    desc: "Disable loading all plugins that the user installed."

  class_option :enable_telemetry, type: :boolean,
    desc: "Allow or disable telemetry", default: false

  require "license_acceptance/cli_flags/thor"
  include LicenseAcceptance::CLIFlags::Thor

  desc "json PATH", "read all tests in the PATH and generate a JSON summary."
  option :output, aliases: :o, type: :string,
    desc: "Save the created profile to a path."
  option :controls, type: :array,
    desc: "A list of controls to include. Ignore all other tests."
  option :tags, type: :array,
    desc: "A list of tags to filter controls and include only those. Ignore all other tests."
  option :legacy_export, type: :boolean, default: false,
    desc: "Run with legacy export."
  profile_options
  def json(target)
    # Config initialisation is needed before deprecation warning can be issued
    # Deprecator calls config get method to fetch the config value
    # Without config initialisation, the config value is not set and hence calling config get through deprecator will set the value of config as blank, making options of json command inaccessible.
    config
    # This deprecation warning is ignored currently.
    Inspec.deprecate(:renamed_to_inspec_export)
    export(target, true)
  end

  desc "export PATH", "read the profile in PATH and generate a summary in the given format."
  option :what, type: :string,
    desc: "What to export: profile (default), readme, metadata."
  option :format, type: :string,
    desc: "The output format to use: json, raw, yaml. If valid format is not provided then it will use the default for the given 'what'."
  option :output, aliases: :o, type: :string,
    desc: "Save the created output to a path."
  option :controls, type: :array,
    desc: "For --what=profile, a list of controls to include. Ignore all other tests."
  option :tags, type: :array,
    desc: "For --what=profile, a list of tags to filter controls and include only those. Ignore all other tests."
  option :legacy_export, type: :boolean, default: false,
         desc: "Run with legacy export."
  profile_options
  def export(target, as_json = false)
    o = config
    diagnose(o)
    o["log_location"] = $stderr
    configure_logger(o)

    # using dup to resolve "can't modify frozen String" error.
    what = o[:what].dup || "profile"
    what.downcase!
    raise Inspec::Error.new("Unrecognized option '#{what}' for --what - expected one of profile, readme, or metadata.") unless %w{profile readme metadata}.include?(what)

    default_format_for_what = {
      "profile" => "yaml",
      "metadata" => "raw",
      "readme" => "raw",
    }
    valid_formats_for_what = {
      "profile" => %w{yaml json},
      "metadata" => %w{yaml raw}, # not going to argue
      "readme" => ["raw"],
    }
    format = o[:format] || default_format_for_what[what]
    # default is json if we were called as old json command
    format = "json" if as_json
    raise Inspec::Error.new("Invalid option '#{format}' for --format and --what combination") unless format && valid_formats_for_what[what].include?(format)

    o[:backend] = Inspec::Backend.create(Inspec::Config.mock)
    o[:check_mode] = true
    o[:vendor_cache] = Inspec::Cache.new(o[:vendor_cache])
    profile = Inspec::Profile.for_target(target, o)
    dst = o[:output].to_s

    case what
    when "profile"
      profile_info = o[:legacy_export] ? profile.info : profile.info_from_parse
      if format == "json"
        require "json" unless defined?(JSON)
        # Write JSON
        Inspec::Utils::JsonProfileSummary.produce_json(
          info: profile_info,
          write_path: dst
        )
      elsif format == "yaml"
        Inspec::Utils::YamlProfileSummary.produce_yaml(
          info: profile_info,
          write_path: dst
        )
      end
    when "readme"
      out = dst.empty? ? $stdout : File.open(dst, "w")
      out.write(profile.readme)
    when "metadata"
      out = dst.empty? ? $stdout : File.open(dst, "w")
      out.write(profile.metadata_src)
    end
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  desc "check PATH", "Verify the metadata in the `inspec.yml` file,\
  verify that control blocks have the correct fields (title, description, impact),\
  and define that all controls have visible tests and the controls are not using deprecated InSpec DSL code"
  option :format, type: :string,
    desc: "The output format to use. Valid values: `json` and `doc`. Default value: `doc`."
  option :with_cookstyle, type: :boolean,
    desc: "Enable or disable cookstyle checks.", default: false
  option :legacy_check, type: :boolean, default: false,
         desc: "Run with legacy check."
  profile_options
  def check(path) # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
    o = config
    diagnose(o)
    o["log_location"] ||= STDERR if o["format"] == "json"
    o["log_level"] ||= "warn"
    configure_logger(o)

    o[:backend] = Inspec::Backend.create(Inspec::Config.mock)
    o[:check_mode] = true
    o[:vendor_cache] = Inspec::Cache.new(o[:vendor_cache])

    # run check
    profile = Inspec::Profile.for_target(path, o)
    result = o[:legacy_check] ? profile.legacy_check : profile.check

    if o["format"] == "json"
      puts JSON.generate(result)
    else
      %w{location profile controls timestamp valid}.each do |item|
        prepared_string = format("%-12s %s",
                                 "#{item.to_s.capitalize} :",
                                 result[:summary][item.to_sym])
        ui.plain_line(prepared_string)
      end
      puts

      enable_offenses = !Inspec.locally_windows? # See 5723
      if result[:errors].empty? && result[:warnings].empty? && result[:offenses].empty?
        if enable_offenses
          ui.plain_line("No errors, warnings, or offenses")
        else
          ui.plain_line("No errors or warnings")
        end
      else
        item_msg = lambda { |item|
          pos = [item[:file], item[:line], item[:column]].compact.join(":")
          pos.empty? ? item[:msg] : pos + ": " + item[:msg]
        }

        result[:errors].each { |item| ui.red " #{Inspec::UI::GLYPHS[:script_x]}  #{item_msg.call(item)}\n" }
        result[:warnings].each { |item| ui.yellow " !  #{item_msg.call(item)}\n" }

        puts

        if enable_offenses && !result[:offenses].empty?
          puts "Offenses:\n"
          result[:offenses].each { |item| ui.cyan(" #{Inspec::UI::GLYPHS[:script_x]} #{item_msg.call(item)}\n\n") }
        end

        offenses = ui.cyan("#{result[:offenses].length} offenses", print: false)
        errors = ui.red("#{result[:errors].length} errors", print: false)
        warnings = ui.yellow("#{result[:warnings].length} warnings", print: false)
        if enable_offenses
          ui.plain_line("Summary:     #{errors}, #{warnings}, #{offenses}")
        else
          ui.plain_line("Summary:     #{errors}, #{warnings}")
        end
      end
    end

    ui.exit Inspec::UI::EXIT_USAGE_ERROR unless result[:summary][:valid]
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  desc "vendor PATH", "Download all dependencies and generate a lockfile in a `vendor` directory"
  option :overwrite, type: :boolean, default: false,
    desc: "Overwrite existing vendored dependencies and lockfile."
  def vendor(path = nil)
    o = config
    configure_logger(o)
    o[:logger] = Logger.new($stdout)
    o[:logger].level = get_log_level(o[:log_level])

    vendor_deps(path, o)
  end

  desc "archive PATH", "Archive a profile to a tar file (default) or zip file."
  profile_options
  option :output, aliases: :o, type: :string,
    desc: "Save the archive to a path."
  option :zip, type: :boolean, default: false,
    desc: "Generates a zip archive."
  option :tar, type: :boolean, default: false,
    desc: "Generates a tar.gz archive."
  option :overwrite, type: :boolean, default: false,
    desc: "Overwrite existing archive."
  option :airgap, type: :boolean, banner: "",
    desc: "Fallback to using local archives if fetching fails."
  option :ignore_errors, type: :boolean, default: false,
    desc: "Ignore profile warnings."
  option :check, type: :boolean, default: false,
    desc: "Run profile check before archiving."
  option :export, type: :boolean, default: false,
    desc: "Export the profile to inspec.json and include in archive"
  option :legacy_export, type: :boolean, default: false,
    desc: "Export the profile in legacy mode to inspec.json and include in archive"
  def archive(path, log_level = nil)
    o = config
    diagnose(o)

    o[:logger] = Logger.new($stdout)
    o[:logger].level = get_log_level(log_level || o[:log_level])
    o[:backend] = Inspec::Backend.create(Inspec::Config.mock)

    # Force vendoring with overwrite when archiving
    vendor_options = o.dup
    vendor_options[:overwrite] = true
    vendor_deps(path, vendor_options)

    profile = Inspec::Profile.for_target(path, o)
    gem_deps = profile.metadata.gem_dependencies + \
      profile.locked_dependencies.list.map { |_k, v| v.profile.metadata.gem_dependencies }.flatten
    unless gem_deps.empty?
      o[:logger].warn "Archiving a profile that contains gem dependencies, but InSpec cannot package gems with the profile! Please archive your ~/.inspec/gems directory separately."
    end

    result = profile.check if o[:check]

    if result && !o[:ignore_errors] == false
      o[:logger].info "Profile check failed. Please fix the profile before generating an archive."
      return ui.exit Inspec::UI::EXIT_USAGE_ERROR
    end

    # generate archive
    ui.exit Inspec::UI::EXIT_USAGE_ERROR unless profile.archive(o)
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  desc "exec LOCATIONS", "Run all test files at the specified locations."
  long_desc <<~EOT
    The subcommand loads the given profiles, fetches their dependencies if needed, then connects to the target and executes any controls in the profiles.
    One or more reporters are used to generate the output.
    ```
    Exit codes:
        0  Normal exit, all tests passed
        1  Usage or general error
        2  Error in plugin system
        3  Fatal deprecation encountered
      100  Normal exit, at least one test failed
      101  Normal exit, at least one test skipped but none failed
      172  Chef License not accepted
    ```

    Below are some examples of using `exec` with different test LOCATIONS:

    Chef Automate:
      ```
      #{Inspec::Dist::EXEC_NAME} automate login
      #{Inspec::Dist::EXEC_NAME} exec compliance://username/linux-baseline
      ```
      `inspec compliance` is a backwards compatible alias for `inspec automate` and works the same way:
      ```
      #{Inspec::Dist::EXEC_NAME} compliance login
      ```

    Chef Supermarket:
      ```
      #{Inspec::Dist::EXEC_NAME} exec supermarket://username/linux-baseline
      ```

    Local profile (executes all tests in `controls/`):
      ```
      #{Inspec::Dist::EXEC_NAME} exec /path/to/profile
      ```

    Local single test (doesn't allow inputs or custom resources)
      ```
      #{Inspec::Dist::EXEC_NAME} exec /path/to/a_test.rb
      ```

    Git via SSH
      ```
      #{Inspec::Dist::EXEC_NAME} exec git@github.com:dev-sec/linux-baseline.git
      ```

    Git via HTTPS (.git suffix is required):
      ```
      #{Inspec::Dist::EXEC_NAME} exec https://github.com/dev-sec/linux-baseline.git
      ```

    Private Git via HTTPS (.git suffix is required):
      ```
      #{Inspec::Dist::EXEC_NAME} exec https://API_TOKEN@github.com/dev-sec/linux-baseline.git
      ```

    Private Git via HTTPS and cached credentials (.git suffix is required):
      ```
      git config credential.helper cache
      git ls-remote https://github.com/dev-sec/linux-baseline.git
      #{Inspec::Dist::EXEC_NAME} exec https://github.com/dev-sec/linux-baseline.git
      ```

    Web hosted file (also supports .zip):
      ```
      #{Inspec::Dist::EXEC_NAME} exec https://webserver/linux-baseline.tar.gz
      ```

    Web hosted file with basic authentication (supports .zip):
      ```
      #{Inspec::Dist::EXEC_NAME} exec https://username:password@webserver/linux-baseline.tar.gz
      ```
  EOT
  exec_options
  def exec(*targets)
    o = config
    diagnose(o)
    deprecate_target_id(config)
    configure_logger(o)

    runner = Inspec::Runner.new(o)
    targets.each { |target| runner.add_target(target) }

    ui.exit runner.run
  rescue ArgumentError, RuntimeError, Train::UserError => e
    $stderr.puts e.message
    ui.exit Inspec::UI::EXIT_USAGE_ERROR
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  desc "detect", "detects the target OS."
  target_options
  option :format, type: :string
  def detect
    o = config
    deprecate_target_id(config)
    o[:command] = "platform.params"

    configure_logger(o)

    (_, res) = run_command(o)

    if o["format"] == "json"
      puts res.to_json
    else
      ui.headline("Platform Details")
      ui.plain Inspec::BaseCLI.format_platform_info(params: res, indent: 0, color: 36, enable_color: ui.color?)
    end
  rescue ArgumentError, RuntimeError, Train::UserError => e
    $stderr.puts e.message
    ui.exit Inspec::UI::EXIT_USAGE_ERROR
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  desc "shell", "open an interactive debugging shell."
  target_options
  option :command, aliases: :c,
    desc: "A single command string to run instead of launching the shell"
  option :reporter, type: :array,
    banner: "one two:/output/file/path",
    desc: "Enable one or more output reporters: cli, documentation, html, progress, json, json-min, json-rspec, junit"
  option :depends, type: :array, default: [],
    desc: "A space-delimited list of local folders containing profiles whose libraries and resources will be loaded into the new shell"
  option :distinct_exit, type: :boolean, default: true,
    desc: "Exit with code 100 if any tests fail, and 101 if any are skipped but none failed (default).  If disabled, exit 0 on skips and 1 for failures."
  option :command_timeout, type: :numeric,
      desc: "Maximum seconds to allow a command to run.",
      long_desc: "Maximum seconds to allow commands to run. A timed out command is considered an error."
  option :inspect, type: :boolean, default: false, desc: "Use verbose/debugging output for resources."
  option :input_file, type: :array,
    desc: "Load one or more input files, a YAML file with values for the shell to use"
  option :input, type: :array, banner: "name1=value1 name2=value2",
    desc: "Specify one or more inputs directly on the command line to the shell, as --input NAME=VALUE. Accepts single-quoted YAML and JSON structures."
  option :enhanced_outcomes, type: :boolean,
    desc: "Show enhanced outcomes in output"
  def shell_func
    o = config
    deprecate_target_id(config)
    diagnose(o)
    o[:debug_shell] = true

    Inspec::Resource.toggle_inspect unless o[:inspect]

    log_device = suppress_log_output?(o) ? nil : $stdout
    o[:logger] = Logger.new(log_device)
    o[:logger].level = get_log_level(o[:log_level])

    if o[:command].nil?
      runner = Inspec::Runner.new(o)
      return Inspec::Shell.new(runner).start
    end

    run_type, res = run_command(o)
    ui.exit res unless run_type == :ruby_eval

    # No InSpec tests - just print evaluation output.
    reporters = o["reporter"] || {}
    if reporters.keys.include?("json")
      res = if res.respond_to?(:to_json)
              res.to_json
            else
              JSON.dump(res)
            end
    end

    puts res
    ui.exit Inspec::UI::EXIT_NORMAL
  rescue RuntimeError, Train::UserError => e
    $stderr.puts e.message
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  desc "env", "Outputs shell-appropriate completion configuration."
  def env(shell = nil)
    p = Inspec::EnvPrinter.new(self.class, shell)
    p.print_and_exit!
  rescue StandardError => e
    pretty_handle_exception(e)
  end

  option :enhanced_outcomes, type: :boolean,
    desc: "Show enhanced outcomes output"
  desc "schema NAME", "print the JSON schema", hide: true
  def schema(name)
    require "inspec/schema/output_schema"
    o = config
    puts Inspec::Schema::OutputSchema.json(name, o)
  rescue StandardError => e
    puts e
    puts "Valid schemas are #{Inspec::Schema::OutputSchema.names.join(", ")}"
  end

  desc "run_context", "used to test run-context detection", hide: true
  def run_context
    require "inspec/utils/telemetry/run_context_probe"
    puts Inspec::Telemetry::RunContextProbe.guess_run_context
  end

  desc "version", "prints the version of this tool."
  option :format, type: :string
  def version
    if config["format"] == "json"
      v = { version: Inspec::VERSION }
      puts v.to_json
    else
      puts Inspec::VERSION
    end
  end
  map %w{-v --version} => :version

  desc "clear_cache", "clears the InSpec cache. Useful for debugging."
  option :vendor_cache, type: :string,
    desc: "Use the given path for caching dependencies, (default: `~/.inspec/cache`)."
  def clear_cache
    o = config
    configure_logger(o)
    cache_path = o[:vendor_cache] || "~/.inspec/cache"
    FileUtils.rm_r Dir.glob(File.expand_path(cache_path))

    o[:logger] = Logger.new($stdout)
    o[:logger].level = get_log_level(o[:log_level])
    o[:logger].info "== InSpec cache cleared successfully =="
  end

  private

  def deprecate_target_id(config)
    unless config[:target_id].nil?
      Inspec.deprecate "cli_option_target_id"
    end
  end

  def run_command(opts)
    runner = Inspec::Runner.new(opts)
    res = runner.eval_with_virtual_profile(opts[:command])
    runner.load

    return :ruby_eval, res if runner.all_rules.empty?

    return :rspec_run, runner.run_tests # rubocop:disable Style/RedundantReturn
  end
end

#=====================================================================#
#                        Pre-Flight Code
#=====================================================================#

help_commands = ["-h", "--help", "help"]

#---------------------------------------------------------------------#
# Adjustments for help handling
# This allows you to use any of the normal help commands after the normal args.
#---------------------------------------------------------------------#
(help_commands & ARGV).each do |cmd|
  # move the help argument to one place behind the end for Thor to digest
  if ARGV.size > 1
    match = ARGV.delete(cmd)
    ARGV.insert(-2, match)
  end
end

#---------------------------------------------------------------------#
# Plugin Loading
#---------------------------------------------------------------------#
require "inspec/plugin/v2"

begin
  # Load v2 plugins.  Manually check for plugin disablement.
  omit_core = ARGV.delete("--disable-core-plugins")
  omit_user = ARGV.delete("--disable-user-plugins")
  v2_loader = Inspec::Plugin::V2::Loader.new(omit_core_plugins: omit_core, omit_user_plugins: omit_user)
  v2_loader.load_all
  v2_loader.exit_on_load_error
  v2_loader.activate_mentioned_cli_plugins

  # Load v1 plugins on startup
  ctl = Inspec::PluginCtl.new
  ctl.list.each { |x| ctl.load(x) }

  # load v1 CLI plugins before the InSpec CLI has been started
  Inspec::Plugins::CLI.subcommands.each do |_subcommand, params|
    Inspec::InspecCLI.register(
      params[:klass],
      params[:subcommand_name],
      params[:usage],
      params[:description],
      params[:options]
    )
  end
rescue Inspec::Plugin::V2::Exception => v2ex
  Inspec::Log.error v2ex.message

  if ARGV.include?("--debug")
    Inspec::Log.error v2ex.class.name
    Inspec::Log.error v2ex.backtrace.join("\n")
  else
    Inspec::Log.error "Run again with --debug for a stacktrace."
  end
  exit Inspec::UI::EXIT_PLUGIN_ERROR
end
