'use strict';
/*jshint asi: true */

var test = require('tape').test
var parse = require('..')

test('parsing a proper link header with next and last', function (t) {
  var link = 
    '<https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=2&per_page=100>; rel="next", ' + 
    '<https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=3&per_page=100>; rel="last"'

  var res = parse(link)
  t.deepEqual(
      parse(link)
    , { next:
        { client_id: '1',
          client_secret: '2',
          page: '2',
          per_page: '100',
          rel: 'next',
          url: 'https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=2&per_page=100' },
        last:
        { client_id: '1',
          client_secret: '2',
          page: '3',
          per_page: '100',
          rel: 'last',
          url: 'https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=3&per_page=100' } }
    , 'parses out link, page and perPage for next and last'
  )
  t.end()
})

test('handles unquoted relationships', function (t) {
  var link = 
    '<https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=2&per_page=100>; rel=next, ' + 
    '<https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=3&per_page=100>; rel=last'

  var res = parse(link)
  t.deepEqual(
      parse(link)
    , { next:
        { client_id: '1',
          client_secret: '2',
          page: '2',
          per_page: '100',
          rel: 'next',
          url: 'https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=2&per_page=100' },
        last:
        { client_id: '1',
          client_secret: '2',
          page: '3',
          per_page: '100',
          rel: 'last',
          url: 'https://api.github.com/user/9287/repos?client_id=1&client_secret=2&page=3&per_page=100' } }
    , 'parses out link, page and perPage for next and last'
  )
  t.end()
})

test('parsing a proper link header with next, prev and last', function (t) {
  var linkHeader = 
    '<https://api.github.com/user/9287/repos?page=3&per_page=100>; rel="next", ' + 
    '<https://api.github.com/user/9287/repos?page=1&per_page=100>; rel="prev", ' + 
    '<https://api.github.com/user/9287/repos?page=5&per_page=100>; rel="last"'

  var res = parse(linkHeader)
  
  t.deepEqual(
      parse(linkHeader)
    , { next:
        { page: '3',
          per_page: '100',
          rel: 'next',
          url: 'https://api.github.com/user/9287/repos?page=3&per_page=100' },
        prev:
        { page: '1',
          per_page: '100',
          rel: 'prev',
          url: 'https://api.github.com/user/9287/repos?page=1&per_page=100' },
        last:
        { page: '5',
          per_page: '100',
          rel: 'last',
          url: 'https://api.github.com/user/9287/repos?page=5&per_page=100' } }
    , 'parses out link, page and perPage for next, prev and last'
  )
  t.end()
})

test('parsing an empty link header', function (t) {
  var linkHeader = '' 
  var res = parse(linkHeader)
  
  t.equal( parse(linkHeader) , null , 'returns null')
  t.end()
})

test('parsing a proper link header with next and a link without rel', function (t) {
  var linkHeader = 
    '<https://api.github.com/user/9287/repos?page=3&per_page=100>; rel="next", ' + 
    '<https://api.github.com/user/9287/repos?page=1&per_page=100>; pet="cat", '

  var res = parse(linkHeader)
  
  t.deepEqual(
      parse(linkHeader)
    , { next:
        { page: '3',
          per_page: '100',
          rel: 'next',
          url: 'https://api.github.com/user/9287/repos?page=3&per_page=100' } }
    , 'parses out link, page and perPage for next only'
  )
  t.end()
})

test('parsing a proper link header with next and properties besides rel', function (t) {
  var linkHeader = 
    '<https://api.github.com/user/9287/repos?page=3&per_page=100>; rel="next"; hello="world"; pet="cat"'

  var res = parse(linkHeader)
  
  t.deepEqual(
      parse(linkHeader)
    , { next:
        { page: '3',
          per_page: '100',
          rel: 'next',
          hello: 'world',
          pet: 'cat',
          url: 'https://api.github.com/user/9287/repos?page=3&per_page=100' } }
    , 'parses out link, page and perPage for next and all other properties'
  )
  t.end()
})

test('parsing a proper link header with a comma in the url', function (t) {
  var linkHeader = 
    '<https://imaginary.url.notreal/?name=What,+me+worry>; rel="next";'

  var res = parse(linkHeader)
  
  t.deepEqual(
      parse(linkHeader)
    , { next:
        { rel: 'next',
          name: 'What, me worry',
          url: 'https://imaginary.url.notreal/?name=What,+me+worry' } }
    , 'correctly parses URL with comma'
  )
  t.end()
})

test('parsing a proper link header with a multi-word rel', function (t) {
  var linkHeader =
    '<https://imaginary.url.notreal/?name=What,+me+worry>; rel="next page";'

  var res = parse(linkHeader)

  t.deepEqual(
      parse(linkHeader)
    , { page: { rel: 'page',
          name: 'What, me worry',
          url: 'https://imaginary.url.notreal/?name=What,+me+worry' },
        next: { rel: 'next',
          name: 'What, me worry',
          url: 'https://imaginary.url.notreal/?name=What,+me+worry' }}
    , 'correctly parses multi-word rels'
  )
  t.end()
})

test('parsing a proper link header with matrix parameters', function (t) {
  var linkHeader =
    '<https://imaginary.url.notreal/segment;foo=bar;baz/item?name=What,+me+worry>; rel="next";'

  var res = parse(linkHeader)

  t.deepEqual(
      parse(linkHeader)
    , { next: { rel: 'next',
          name: 'What, me worry',
          url: 'https://imaginary.url.notreal/segment;foo=bar;baz/item?name=What,+me+worry' }}
    , 'correctly parses url with matrix parameters'
  )
  t.end()
})

test('parsing an extremely long link header', function (t) {
  function payload (n) {
    var ret = ""
    for (var i = 0; i < n; i++) {
      ret += " "
    }
    return ret
    }
  var linkHeader = '; rel="' + payload(10000) + '",'

  t.equal(
      parse(linkHeader)
    , null
    , 'correctly returns null when dealing with an extremely long link header'
  )
  t.end()
})