require 'commander'
require 'rainbow'
require_relative 'herodot/version'
require_relative 'herodot/configuration'
require_relative 'herodot/worklog'
require_relative 'herodot/parser'
require_relative 'herodot/commands'
require_relative 'herodot/output'
require_relative 'herodot/project_link'

module Herodot
  class Application
    include Commander::Methods
    USER_HOME = File.expand_path('~').to_s

    def run
      program :name, 'herodot'
      program :version, VERSION
      program :description, 'Tracks your work based on git branch checkouts'

      config = Configuration.new
      init_command(config)
      track_command(config)
      show_command(config)
      link_command(config)
      default_command :show
      run!
    end

    INIT_DESCRIPTION = 'This command sets up post commit and post checkout hooks'\
                        ', that will log the current branch into the worklog file.'.freeze
    def init_command(config)
      command :init do |c|
        c.syntax = 'herodot init [<repository path>]'
        c.summary = 'Start tracking a repository'
        c.description = INIT_DESCRIPTION
        c.example 'Start tracking current repository', 'herodot init'
        c.action do |args, _|
          Commands.init(args[0], config)
        end
      end
    end

    TRACK_DESCRIPTION = 'This command tracks the current branch/commit in a repo '\
                        'and is called from the git hooks installed via `herodot init`.'.freeze
    def track_command(config)
      command :track do |c|
        c.syntax = 'herodot track <repository path>'
        c.summary = 'Record git activity in a repository (used internally)'
        c.description = TRACK_DESCRIPTION
        c.example 'Record the latest branch name etc. to the worklog', 'herodot track .'
        c.action do |args, _|
          Commands.track(args[0], config)
        end
      end
    end

    SHOW_DESCRIPTION = 'This command parses the worklog file and returns the'\
                      'git branch based worklog according to the'\
                      'work times specified in the `~/.herodot.yml`.'.freeze
    def show_command(config)
      command :show do |c|
        c.syntax = 'herodot show [<time range>]'
        c.summary = 'Shows worklogs'
        c.description = SHOW_DESCRIPTION
        c.option '--format FORMAT', String, 'Uses specific output format (Supported: json)'
        show_command_examples(c)
        c.action do |args, options|
          Commands.show(args, config, options)
        end
      end
    end

    LINK_DESCRIPTION = 'This command can link a repository to a project issue tracking tool.'\
                      ' The commmands writes the settings in `project_path/.herodot.yml`.'.freeze
    def link_command(_)
      command :link do |c|
        c.syntax = 'herodot link [<repository path>]'
        c.summary = 'Link project with issue tracker'
        c.description = SHOW_DESCRIPTION
        c.example 'Link current repository', 'herodot link'
        c.action do |args, _|
          Commands.link(args[0])
        end
      end
    end

    def show_command_examples(c)
      c.example 'Shows this weeks worklogs', 'herodot show'
      c.example 'Shows last weeks worklogs', 'herodot show last week'
      c.example 'Shows worklogs for last monday', 'herodot show monday'
      c.example 'Shows worklogs for 12-12-2016', 'herodot show 12-12-2016'
      c.example 'Shows last weeks worklogs as json', 'herodot show --format json last week'
      c.example 'Shows last weeks worklogs as json (short)', 'herodot show -f json last week'
    end
  end
end