import { describe } from 'bun:test'
import { expect, test } from 'bun:test'

describe('number literals', () => {
  test('binary literals', () => {
    expect('0b110').toEvaluateTo(6)
    expect('0b1010').toEvaluateTo(10)
    expect('0b11111111').toEvaluateTo(255)
    expect('0b0').toEvaluateTo(0)
    expect('0b1').toEvaluateTo(1)
  })

  test('hex literals', () => {
    expect('0xdeadbeef').toEvaluateTo(0xdeadbeef)
    expect('0xdeadbeef').toEvaluateTo(3735928559)
    expect('0xFF').toEvaluateTo(255)
    expect('0xff').toEvaluateTo(255)
    expect('0x10').toEvaluateTo(16)
    expect('0x0').toEvaluateTo(0)
    expect('0xABCDEF').toEvaluateTo(0xabcdef)
  })

  test('decimal literals still work', () => {
    expect('42').toEvaluateTo(42)
    expect('3.14').toEvaluateTo(3.14)
    expect('0').toEvaluateTo(0)
    expect('999999').toEvaluateTo(999999)
  })

  test('negative hex and binary', () => {
    expect('-0xFF').toEvaluateTo(-255)
    expect('-0b1010').toEvaluateTo(-10)
  })

  test('positive prefix', () => {
    expect('+0xFF').toEvaluateTo(255)
    expect('+0b110').toEvaluateTo(6)
    expect('+42').toEvaluateTo(42)
  })
})

describe('array literals', () => {
  test('work with numbers', () => {
    expect('[1 2 3]').toEvaluateTo([1, 2, 3])
  })

  test('work with strings', () => {
    expect("['one' 'two' 'three']").toEvaluateTo(['one', 'two', 'three'])
  })

  test('work with identifiers', () => {
    expect('[one two three]').toEvaluateTo(['one', 'two', 'three'])
  })

  test('can be nested', () => {
    expect('[one [two [three]]]').toEvaluateTo(['one', ['two', ['three']]])
  })

  test('can span multiple lines', () => {
    expect(`[
      1
      2
      3
    ]`).toEvaluateTo([1, 2, 3])
  })

  test('can span multiple w/o calling functions', () => {
    expect(`[
      one
      two
      three
    ]`).toEvaluateTo(['one', 'two', 'three'])
  })

  test('empty arrays', () => {
    expect('[]').toEvaluateTo([])
  })

  test('mixed types', () => {
    expect("[1 'two' three true null]").toEvaluateTo([1, 'two', 'three', true, null])
  })

  test('semicolons as separators', () => {
    expect('[1; 2; 3]').toEvaluateTo([1, 2, 3])
  })

  test('expressions in arrays', () => {
    expect('[(1 + 2) (3 * 4)]').toEvaluateTo([3, 12])
  })

  test('mixed separators - spaces and newlines', () => {
    expect(`[1 2
3 4]`).toEvaluateTo([1, 2, 3, 4])
  })

  test('mixed separators - spaces and semicolons', () => {
    expect('[1 2; 3 4]').toEvaluateTo([1, 2, 3, 4])
  })

  test('empty lines within arrays', () => {
    expect(`[1

2]`).toEvaluateTo([1, 2])
  })

  test('comments within arrays', () => {
    expect(`[1
  2
  ]`).toEvaluateTo([1, 2])
  })

  test('complex nested multiline', () => {
    expect(`[
  [1 2]
  [3 4]
  [5 6]
]`).toEvaluateTo([
      [1, 2],
      [3, 4],
      [5, 6],
    ])
  })

  test('boolean and null literals', () => {
    expect('[true false null]').toEvaluateTo([true, false, null])
  })

  test('regex literals', () => {
    expect('[//[0-9]+//]').toEvaluateTo([/[0-9]+/])
  })

  test('trailing newlines', () => {
    expect(`[
1
2
]`).toEvaluateTo([1, 2])
  })
})

describe('dict literals', () => {
  test('work with numbers', () => {
    expect('[a=1 b=2 c=3]').toEvaluateTo({ a: 1, b: 2, c: 3 })
  })

  test('work with strings', () => {
    expect("[a='one' b='two' c='three']").toEvaluateTo({ a: 'one', b: 'two', c: 'three' })
  })

  test('work with identifiers', () => {
    expect('[a=one b=two c=three]').toEvaluateTo({ a: 'one', b: 'two', c: 'three' })
  })

  test('can be nested', () => {
    expect('[a=one b=[two [c=three]]]').toEvaluateTo({ a: 'one', b: ['two', { c: 'three' }] })
  })

  test('can span multiple lines', () => {
    expect(`[
        a=1
        b=2
        c=3
      ]`).toEvaluateTo({ a: 1, b: 2, c: 3 })
  })

  test('empty dict', () => {
    expect('[=]').toEvaluateTo({})
    expect('[ = ]').toEvaluateTo({})
  })

  test('mixed types', () => {
    expect("[a=1 b='two' c=three d=true e=null]").toEvaluateTo({
      a: 1,
      b: 'two',
      c: 'three',
      d: true,
      e: null,
    })
  })

  test('semicolons as separators', () => {
    expect('[a=1; b=2; c=3]').toEvaluateTo({ a: 1, b: 2, c: 3 })
  })

  test('expressions in dicts', () => {
    expect('[a=(1 + 2) b=(3 * 4)]').toEvaluateTo({ a: 3, b: 12 })
  })

  test('empty lines within dicts', () => {
    expect(`[a=1

  b=2

  c=3]`).toEvaluateTo({ a: 1, b: 2, c: 3 })
  })
})

describe('curly strings', () => {
  test('work on one line', () => {
    expect('{ one two three }').toEvaluateTo(" one two three ")
  })

  test('work on multiple lines', () => {
    expect(`{
      one
      two
      three
    }`).toEvaluateTo("\n      one\n      two\n      three\n    ")
  })

  test('can contain other curlies', () => {
    expect(`{
      { one }
      two
      { three }
    }`).toEvaluateTo("\n      { one }\n      two\n      { three }\n    ")
  })

  test('interpolates variables', () => {
    expect(`name = Bob; { Hello $name! }`).toEvaluateTo(` Hello Bob! `)
  })

  test("doesn't interpolate escaped variables ", () => {
    expect(`name = Bob; { Hello \\$name }`).toEvaluateTo(` Hello $name `)
    expect(`a = 1; b = 2; { sum is \\$(a + b)! }`).toEvaluateTo(` sum is $(a + b)! `)
  })

  test('interpolates expressions', () => {
    expect(`a = 1; b = 2; { sum is $(a + b)! }`).toEvaluateTo(` sum is 3! `)
    expect(`a = 1; b = 2; { sum is { $(a + b) }! }`).toEvaluateTo(` sum is { 3 }! `)
    expect(`a = 1; b = 2; { sum is $(a + (b * b))! }`).toEvaluateTo(` sum is 5! `)
    expect(`{ This is $({twisted}). }`).toEvaluateTo(` This is twisted. `)
    expect(`{ This is $({{twisted}}). }`).toEvaluateTo(` This is {twisted}. `)
  })

  test('interpolation edge cases', () => {
    expect(`{[a=1 b=2 c={wild}]}`).toEvaluateTo(`[a=1 b=2 c={wild}]`)
    expect(`a = 1;b = 2;c = 3;{$a $b $c}`).toEvaluateTo(`1 2 3`)
    expect(`a = 1;b = 2;c = 3;{$a$b$c}`).toEvaluateTo(`123`)
  })
})

describe('double quoted strings', () => {
  test("work", () => {
    expect(`"hello world"`).toEvaluateTo('hello world')
  })

  test("don't interpolate", () => {
    expect(`"hello $world"`).toEvaluateTo('hello $world')
    expect(`"hello $(1 + 2)"`).toEvaluateTo('hello $(1 + 2)')
  })

  test("equal regular strings", () => {
    expect(`"hello world" == 'hello world'`).toEvaluateTo(true)
  })

  test("can contain newlines", () => {
    expect(`
      "hello
      world"`).toEvaluateTo('hello\n      world')
  })
})