gem "huh", github: "marcoroth/huh-ruby"

require "huh"

form = Huh.form(
  Huh.group(
    Huh.input
      .key("name")
      .title("What's your name?")
      .placeholder("Enter your name..."),

    Huh.input
      .key("email")
      .title("Email address")
      .placeholder("you@example.com")
  )
)

form.run

puts "Hello, #{form["name"]}!"
puts "Email: #{form["email"]}"

input = Huh.input
  .key("username")
  .title("Username")
  .placeholder("Enter username...")
  .char_limit(20)
  .validate(Huh::Validation.not_empty)

password = Huh.input
  .key("password")
  .title("Password")
  .echo_mode(:password)

text = Huh.text
  .key("bio")
  .title("Tell us about yourself")
  .placeholder("Write something...")
  .lines(5)
  .char_limit(500)

select = Huh.select
  .key("color")
  .title("Pick a color")
  .options(
    Huh.option("Red", "#ff0000"),
    Huh.option("Green", "#00ff00"),
    Huh.option("Blue", "#0000ff")
  )

select = Huh.select
  .key("fruit")
  .title("Pick a fruit")
  .options(*Huh.options("Apple", "Banana", "Cherry"))

multi = Huh.multi_select
  .key("toppings")
  .title("Choose toppings")
  .options(*Huh.options("Cheese", "Pepperoni", "Mushrooms", "Olives"))
  .limit(3)

confirm = Huh.confirm
  .key("agree")
  .title("Do you agree to the terms?")
  .affirmative("I agree")
  .negative("I disagree")

note = Huh.note
  .title("Welcome!")
  .description("This wizard will help you set up your project.")
  .next(true)
  .next_label("Get Started")

spinner = Huh.spinner
  .title("Loading data...")
  .type(:dots)
  .action { fetch_from_api }

error = spinner.run
puts "Failed: #{error.message}" if error

form = Huh.form(
  Huh.group(
    Huh.input.key("name").title("Name")
  )
).with_theme(Huh::Themes.charm)

input.validate(Huh::Validation.not_empty)

input.validate(Huh::Validation.min_length(3))

input.validate(Huh::Validation.max_length(100))

input.validate(Huh::Validation.length_range(3, 20))

input.validate(Huh::Validation.email)

input.validate(Huh::Validation.integer)

input.validate(Huh::Validation.url)

input.validate(Huh::Validation.match(/^[a-z]+$/, "must be lowercase letters"))

input.validate do |value|
  raise Huh::ValidationError, "must start with @" unless value.start_with?("@")
end

input.validate(
  Huh::Validation.all(
    Huh::Validation.not_empty,
    Huh::Validation.min_length(3),
    Huh::Validation.max_length(20)
  )
)

form = Huh.form(
  Huh.group(
    Huh.input.key("email").validate(Huh::Validation.email)
  )
).with_validate_on_submit(true)  # Users can't proceed until field is valid

count = 0

input = Huh.input
  .key("item")
  .title_func { "Item #{count + 1}" }
  .description_func { "You've added #{count} items" }

items = ["A", "B", "C"]

select = Huh.select
  .key("item")
  .title("Pick an item")
  .options_func { Huh.options(*items) }

user = Struct.new(:name, :email).new("", "")

form = Huh.form(
  Huh.group(
    Huh.input.key("name").title("Name").value(user, :name),
    Huh.input.key("email").title("Email").value(user, :email)
  )
)

form.run

puts user.name   # Value is automatically synced
puts user.email

errors = form.run

if errors.any?
  errors.each { |e| puts "Error: #{e.message}" }
else
  form["name"]             # Get by key
  form.get("name")         # Same as above
  form.to_h                # Get all results as hash
end

form = Huh.form(
  Huh.group(
    Huh.input.key("name").title("Name"),
    Huh.input.key("email").title("Email")
  ).title("Personal Info").description("Enter your details"),

  Huh.group(
    Huh.input.key("company").title("Company"),
    Huh.input.key("role").title("Role")
  ).title("Work Info")
)

form.with_layout(Huh::Layout.stack)

form.with_layout(Huh::Layout.columns(2))

name = Huh.input
  .title("What's your name?")
  .run

puts "Hello, #{name}!"

result = Huh.run(
  Huh.confirm.title("Continue?")
)

form = Huh::Form.new do |form|
  form.theme(Huh::Themes.charm)

  form.group do |group|
    group.title("User Registration")

    group.input do |input|
      input.key("name")
      input.title("What's your name?")
      input.placeholder("Enter your name")
    end

    group.select do |select|
      select.key("role")
      select.title("Your role")
      select.options("Developer", "Designer", "Manager")
    end

    group.confirm do |confirm|
      confirm.key("newsletter")
      confirm.title("Subscribe?")
    end
  end
end

form.run