#!/usr/bin/env ruby
# Encoding: utf-8
#--------------------------------------------------------------------
# PinPress
#
# A Pinboard application that allows for the creation of
# "pin templates" in almost any conceivable format.
#
# Copyright (c) 2014
# Aaron Bach <bachya1208@gmail.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.
#--------------------------------------------------------------------
require 'chronic'
require 'cliutils'
require 'gli'
require 'pinboard'
require 'pinpress'

include CLIUtils::Configuration
include CLIUtils::Messaging
include GLI::App

#  ======================================================
#  App Info
#  ======================================================
program_desc PinPress::DESCRIPTION
version PinPress::VERSION

#  ======================================================
#  Global Flags and Switches
#  ======================================================

#  ======================================================
#  Pre, Post, and Error
#  ======================================================
pre do |global, command, options, args|
  # Load PinPress configuration module.
  load_configuration(PinPress::CONFIG_FILEPATH)
  file_logger = Logger.new(PinPress::LOG_FILEPATH)
  file_logger.level = LOG_LEVELS[configuration.pinpress[:log_level] || 'DEBUG']
  messenger.attach(LOGFILE: file_logger)

  if File.exists?(PinPress::CONFIG_FILEPATH)
    # Set the current and last config versions in the Configurator.
    configuration.current_version = configuration.pinpress[:version]
    configuration.last_version = PinPress::NEWEST_CONFIG_VERSION

    # Compare the two versions and, if needed, update.
    configuration.compare_version do |c, l|
      messenger.debug { "Upgrading from #{ c } to #{ l }" }
      PinPress.update_config_file
      exit!(0)
    end
  else
    # Force the user to init if they try to run any command other than `init` first.
    PinPress.init(true)
    exit!(0)
  end
  true
end

post do |global,command,options,args|

end

on_error do |exception|
  messenger.error(exception.to_s)
  exit!(1)
  true
end

#  ======================================================
#  Commands
#  ======================================================
#  ------------------------------------------------------
#  init command
#
#  Initializes the app by asking the user for information
#  needed torun.
#  ------------------------------------------------------
desc 'Install and initialize dependencies'
command :init do |c|
  c.switch([:s], desc: 'Run init from scratch (i.e., clear out all values from configuration)')
  c.action do |global_options, options, args|
    if options[:s]
      PinPress.init(true)
    else
      long_message = "You've already initialized PinPress. Do it again?"
      PinPress.init if messenger.prompt(long_message, 'N').downcase == 'y'
    end
  end
end

#  ------------------------------------------------------
#  pins command
#
#  Gets pins from Pinboard.
#  ------------------------------------------------------
desc 'Get posts from Pinboard'
command :pins do |c|
  c.flag([:e], desc: 'The end date to pull pins to')
  c.flag([:f], desc: 'Output the results to a file')
  c.flag([:n], desc: 'The number of results to return')
  c.flag([:s], desc: 'The start date to pull pins from')
  c.flag([:t], desc: 'The tags to use (e.g., "ruby,pinboard")')
  c.flag([:template], desc: 'The template to use')

  c.action do |global_options, options, args|
    # Determine the template to use.
    # template = PinPress.assign_template(args[0])

    if args.empty?
      template = PinPress.get_template
    else
      template = PinPress.get_template(args[0])
    end

    if !template.nil?
      # Create a Pinboard client and set options based on
      # PinPress flags.
      opts = {}
      client = Pinboard::Client.new(token: configuration.pinpress[:api_token])
      opts.merge!(todt: Chronic.parse(options[:e])) if options[:e]
      opts.merge!(results: options[:n]) if options[:n]
      opts.merge!(fromdt: Chronic.parse(options[:s])) if options[:s]
      opts.merge!(tag: options[:t]) if options[:t]
      begin
        pins = client.posts(opts)

        puts template[:opener]
        pins.each do |p|
          href        = p[:href]
          description = p[:description]
          extended    = p[:extended]
          tag         = p[:tag]
          time        = p[:time]
          replace     = p[:replace]
          shared      = p[:shared]
          toread      = p[:toread]

          line = ERB.new <<-LINETEMPLATE
  #{ template[:item] }
          LINETEMPLATE
          puts line.result(binding)
        end
        puts template[:closer]
      rescue StandardError => e
        fail "Pinboard API failed; are you sure you've run " \
             " `pinpress init` (and that your API key is correct)?"
      end
    else
      fail 'Invalid template provided and/or no valid default template exists!'
    end
  end
end

#  ------------------------------------------------------
#  template command
#
#  Manages templates 
#  ------------------------------------------------------
desc 'Work with templates for pin output'
command :template do |c|
  c.desc 'Choose the default template'
  c.command :default do |default|
    default.action do |global_options, options, args|
      PinPress.choose_default_template
    end
  end

  c.desc 'List current templates'
  c.command :list do |list|
    list.action do |global_options, options, args|
      PinPress.list_templates
    end
  end
  c.default_command :list
end

#  ======================================================
#  Run!
#  ======================================================
exit run(ARGV)