require "commander"
require "tallboy"
require "wannabe_bool"

module Backend
  CLI = Commander::Command.new do |cmd|
    cmd.use = "backend"
    cmd.short = "Mentorenwahl backend CLI"

    cmd.run do
      puts cmd.help
    end

    cmd.commands.add do |c|
      c.use = "version"
      c.short = "Prints version"
      c.long = c.short

      c.run do
        puts VERSION
      end
    end

    cmd.commands.add do |c|
      c.use = "authors"
      c.short = "Prints authors"
      c.long = c.short

      c.run do
        puts AUTHORS.join("\n")
      end
    end

    cmd.commands.add do |c|
      c.use = "licenses"
      c.short = "Prints licenses of projects used by this programs"
      c.long = c.short

      c.run do
        puts LICENSES
      end
    end

    cmd.commands.add do |c|
      c.use = "run"
      c.short = "Run the backend"
      c.long = c.short

      c.run do
        Runner.new.run
      end
    end

    cmd.commands.add do |c|
      c.use = "schema"
      c.short = "Prints out GraphQL schema"
      c.long = c.short

      c.run do
        puts Api::Schema::SCHEMA.document.to_s
      end
    end

    cmd.commands.add do |c|
      c.use = "seed"
      c.short = "Imports users from Untis"
      c.long = c.short

      c.run do
        users = Auth.users

        students = [] of Templates::Users::Student
        users.classes.each do |cl|
          c_db = Db::Class.create!({name: cl.name})
          cl.students.each do |s|
            password = Password.generate(Password::DEFAULT_LEN)
            students << Templates::Users::Student.new(
              class_name: cl.name,
              user: Templates::Users::User.new(
                first_name: s.first_name,
                last_name: s.last_name,
                username: s.username,
                password: password
              )
            )
            user = Db::User.create!({
              username:   s.username,
              password:   password,
              first_name: s.first_name,
              last_name:  s.last_name,
              role:       Db::UserRole::Student,
              admin:      false,
            })
            Db::Student.create!({
              user_id:  user.id,
              class_id: c_db.id,
            })
          end
        end

        teachers = [] of Templates::Users::User
        Db::User.import(
          users.teachers.map do |t|
            password = Password.generate(Password::DEFAULT_LEN)
            teachers << Templates::Users::User.new(
              first_name: t.first_name,
              last_name: t.last_name,
              username: t.username,
              password: password
            )

            Db::User.new({
              username:   t.username,
              password:   password,
              first_name: t.first_name,
              last_name:  t.last_name,
              role:       Db::UserRole::Teacher,
              admin:      false,
            })
          end
        )

        html = Templates::Users.new(students, teachers).to_s
        puts "Filepath: #{Auth.generate_pdf(html).filename}"
      end
    end

    # cmd.commands.add do |c|
    #   c.use = "register <username> <role>"
    #   c.short = "Seeds the database with required data"
    #   c.long = c.short

    #   c.flags.add do |f|
    #     f.name = "admin"
    #     f.long = "--admin"
    #     f.default = false
    #     f.description = "Register as admin"
    #   end

    #   c.flags.add do |f|
    #     f.name = "yes"
    #     f.short = "-y"
    #     f.long = "--yes"
    #     f.default = false
    #     f.description = "Answer yes to all questions"
    #   end

    #   c.run do |opts, args|
    #     username = args[0]
    #     role = Db::UserRole.from_string(args[1].underscore)
    #     unless opts.bool["yes"]
    #       print "Register '#{username}' as '#{role.to_api}'#{opts.bool["admin"] ? " with admin privileges" : nil}? [y/N] "
    #       abort unless gets(chomp: true).not_nil!.strip.downcase == "y"
    #     end

    #     user = Db::User.create!(username: username, role: role.to_s, admin: opts.bool["admin"])
    #     if role == Db::UserRole::Student
    #       Db::Student.create!(user_id: user.id)
    #     end

    #     # Worker::Jobs::CacheLdapUserJob.new(user.id).enqueue

    #     puts "Done!"
    #   end
    # end

    # ameba:disable Lint/ShadowingOuterLocalVar
    cmd.commands.add do |cmd|
      cmd.use = "user:list"
      cmd.short = "Lists all users"
      cmd.long = cmd.short

      cmd.run do
        users = Db::User.query.to_a
        table = Tallboy.table do
          header ["id", "username", "first_name", "last_name", "role", "admin"]

          users.each do |user|
            row [
              user.id,
              user.username,
              user.first_name,
              user.last_name,
              user.role,
              user.admin,
            ]
          end
        end

        puts table
      end
    end

    # ameba:disable Lint/ShadowingOuterLocalVar
    cmd.commands.add do |cmd|
      cmd.use = "user:admin <id> <admin>"
      cmd.short = "Gives or removed admin rights"
      cmd.long = cmd.short

      cmd.run do |_opts, args|
        user = Db::User.find!(args[0].to_i)
        user.admin = args[1].to_b
        user.save!

        table = Tallboy.table do
          header ["id", "username", "first_name", "last_name", "role", "admin"]

          row [
            user.id,
            user.username,
            user.first_name,
            user.last_name,
            user.role,
            user.admin,
          ]
        end

        puts table
      end
    end
  end
end