# frozen_string_literal: true

RSpec.describe TTY::Reader::Line do
  it "provides access to the prompt" do
    line = described_class.new('aaa', prompt: '>> ')
    expect(line.prompt).to eq('>> ')
    expect(line.text).to eq('aaa')
    expect(line.size).to eq(6)
    expect(line.to_s).to eq(">> aaa")
  end

  it "inserts characters inside a line" do
    line = described_class.new('aaaaa')

    line[0] = 'test'
    expect(line.text).to eq('testaaaaa')

    line[4..6] = ''
    expect(line.text).to eq('testaa')
  end

  it "moves cursor left and right" do
    line = described_class.new('aaaaa')

    5.times { line.left }
    expect(line.cursor).to eq(0)
    expect(line.start?).to eq(true)

    line.left(5)
    expect(line.cursor).to eq(0)

    line.right(20)
    expect(line.cursor).to eq(5)
    expect(line.end?).to eq(true)
  end

  it "inserts char at start of the line" do
    line = described_class.new('aaaaa')
    expect(line.cursor).to eq(5)

    line[0] = 'b'
    expect(line.cursor).to eq(1)
    expect(line.text).to eq('baaaaa')

    line.insert('b')
    expect(line.text).to eq('bbaaaaa')
  end

  it "inserts char at end of the line" do
    line = described_class.new('aaaaa')
    expect(line.cursor).to eq(5)

    line[4] = 'b'
    expect(line.cursor).to eq(5)
    expect(line.text).to eq('aaaaba')
  end

  it "inserts char inside the line" do
    line = described_class.new('aaaaa')
    expect(line.cursor).to eq(5)

    line[2] = 'b'
    expect(line.cursor).to eq(3)
    expect(line.text).to eq('aabaaa')
  end

  it "inserts char outside of the line size" do
    line = described_class.new('aaaaa')
    expect(line.cursor).to eq(5)

    line[10] = 'b'
    expect(line.cursor).to eq(11)
    expect(line.text).to eq('aaaaa     b')
  end

  it "inserts chars in empty string" do
    line = described_class.new('')
    expect(line.cursor).to eq(0)

    line.insert('a')
    expect(line.cursor).to eq(1)

    line.insert('b')
    expect(line.cursor).to eq(2)
    expect(line.to_s).to eq('ab')

    line.insert('cc')
    expect(line.cursor).to eq(4)
    expect(line.to_s).to eq('abcc')
  end

  it "inserts characters with #insert call" do
    line = described_class.new('aaaaa')
    expect(line.cursor).to eq(5)

    line.left(2)
    expect(line.cursor).to eq(3)

    line.insert(' test ')
    expect(line.text).to eq('aaa test aa')
    expect(line.cursor).to eq(9)

    line.right
    expect(line.cursor).to eq(10)
  end

  it "removes char before current cursor position" do
    line = described_class.new('abcdef')
    expect(line.cursor).to eq(6)

    line.remove(2)
    expect(line.text).to eq('abcd')
    expect(line.cursor).to eq(4)

    line.left
    line.left
    line.remove
    expect(line.text).to eq('acd')
    expect(line.cursor).to eq(1)

    line.insert('x')
    expect(line.text).to eq('axcd')
  end

  it "deletes char under current cursor position" do
    line = described_class.new('abcdef')

    line.left(3)
    line.delete
    expect(line.text).to eq('abcef')

    line.right
    line.delete
    expect(line.text).to eq('abce')

    line.left(4)
    line.delete
    expect(line.text).to eq('bce')
  end

  it "replaces current line with new preserving cursor" do
    line = described_class.new('x' * 6)
    expect(line.text).to eq('xxxxxx')
    expect(line.cursor).to eq(6)
    expect(line.mode).to eq(:edit)
    expect(line.editing?).to eq(true)

    line.replace('y' * 8)
    expect(line.text).to eq('y' * 8)
    expect(line.cursor).to eq(8)
    expect(line.replacing?).to eq(true)

    line.insert('z')
    expect(line.text).to eq('y' * 8 + 'z')
    expect(line.cursor).to eq(9)
    expect(line.editing?).to eq(true)
  end
end