require "option_parser"
require "yaml"
require "colorize"

# password serializer
class Password
  include YAML::Serializable

  @[YAML::Field(key: "url")]
  property url : String
  @[YAML::Field(key: "email")]
  property email : String
  @[YAML::Field(key: "login")]
  property login : String
  @[YAML::Field(key: "password")]
  property password : String
  @[YAML::Field(key: "desc")]
  property desc : String
  @[YAML::Field(key: "profile_url")]
  property profile_url : String
  @[YAML::Field(key: "update")]
  property update : Int32
end

VERSION = "0.2.2"

# program options
begin
  OptionParser.parse do |parser|
    parser.banner = "The very simple password manager for humans\n"

    parser.on "-v", "--version", "Show version" do
      puts "The very simple password manager for humans."
      puts "Version #{VERSION}"
      exit(0)
    end
    parser.on "-h", "--help", "Show help" do
      puts parser
      exit(0)
    end
    parser.on "-g", "--generate-password", "Generate password" do
      puts Random::Secure.urlsafe_base64(16, padding: false).colorize(:black).back(:white)
      puts Random::Secure.urlsafe_base64(16, padding: false).colorize(:white).back(:blue)
      puts Random::Secure.urlsafe_base64(16, padding: false).colorize(:white).back(:red)
      exit(0)
    end
    parser.on "-t", "--unixtime", "Return local timestamp" do
      puts Time.local.to_unix.colorize(:yellow).mode(:bold)
      exit(0)
    end
  end
rescue ex
  puts ex.message, ""
end

# password_file_path = PROGRAM_NAME.split("/")
# password_file_path.pop
# password_file_path.insert(-1, "pwd.yml")
# password_file_path = password_file_path.join("/")

# TODO: Fix later
password_file_path = "#{ENV["HOME"]}/.pwd.yml"

# check password file exists
if File.exists?(password_file_path)
  yaml = File.open(password_file_path) do |file|
    YAML.parse(file)
  end
else
  puts "No password.yml file exists."

  exit(1)
end

# fill passwords array
passwords_array = [] of Password
count = 0
while count < yaml.size
  passwords_array << Password.from_yaml(yaml[count].to_yaml)
  count += 1
end

# check file ppermissions
password_file_permissions = File.info(password_file_path).permissions.to_s

if /\d{3}/.match(password_file_permissions).try &.[0] != "600"
  puts "Password file permissions is not RW for you.".colorize(:red)

  exit(1)
end

# pmng title
system "clear"
puts "The very simple password manager for humans".colorize(:yellow).mode(:bold)
puts "-------------------------------------------".colorize(:yellow).mode(:bold)

# main loop
loop = true
while loop
  # shell prompt
  print "Enter URL (".colorize(:white).mode(:bold)
  print ":h".colorize(:red).mode(:bold)
  print " for help or ".colorize(:white).mode(:bold)
  print ":q".colorize(:red).mode(:bold)
  print " for exit)\n".colorize(:white).mode(:bold)
  print "> ".colorize(:green).mode(:bold)

  password_string = gets

  if password_string.to_s == ":q"
    # if ':q' to close program
    system "clear"
    puts "Bye! 👋"
    exit(0)
  elsif password_string.to_s.size == 0
    # if puts empty, retry prompt
    puts
  elsif password_string.to_s == ":h"
    # if ':h' to view help
    system "clear"

    puts "Help\n----".colorize(:yellow).mode(:bold)
    print ":s".colorize(:red).mode(:bold)
    puts " - Return stats"
  elsif password_string.to_s == ":s"
    # if ':s' to view Statistics
    system "clear"

    puts "Statistics\n----------".colorize(:yellow).mode(:bold)

    print "All elements: ".colorize(:yellow).mode(:bold)
    puts passwords_array.size

    print "Passwords outdated: ".colorize(:red).mode(:bold)
    outdated_count = 0
    current_time = Time.local.to_unix
    a = [] of String
    passwords_array.each do |item|
      if item.update + (2629743 * 3) < current_time # 2629743 * 3 -- 3 month
        outdated_count += 1
        a << item.url
      end
    end

    puts outdated_count
  else
    # list search password
    system "clear"

    passwords_array.each do |item|
      if item.url.includes?(password_string.to_s)
        print "🌐 "
        puts item.url.colorize(:magenta).mode(:bold).mode(:underline)

        if !item.email.blank?
          print "📧 "
          puts item.email.colorize(:red)
        end

        if !item.login.blank?
          # print "\u{1F3F7}\u{FE0F} "
          print "🗿 "
          puts item.login.colorize(:yellow)
        end

        if !item.password.blank?
          print "🔐 "
          puts item.password.colorize(:red).back(:red)
        end

        if !item.desc.blank?
          print "📄 "
          puts item.desc.colorize(:cyan)
        end

        if !item.profile_url.blank?
          print "👦 "
          puts item.profile_url.colorize(:green)
        end

        puts "-----".colorize(:dark_gray).mode(:bold)
      end
    end
  end

  puts
end