'use strict';

require('../common');
const assert = require('assert');
const URL = require('url').URL;

const m = new URL('http://example.org');
let params = m.searchParams;

// Until we export URLSearchParams
const URLSearchParams = params.constructor;

// Basic URLSearchParams construction
params = new URLSearchParams();
assert.strictEqual(params + '', '');
params = new URLSearchParams('');
assert.strictEqual(params + '', '');
params = new URLSearchParams('a=b');
assert.strictEqual(params + '', 'a=b');
params = new URLSearchParams(params);
assert.strictEqual(params + '', 'a=b');

// URLSearchParams constructor, empty.
assert.throws(() => URLSearchParams(), TypeError,
              'Calling \'URLSearchParams\' without \'new\' should throw.');
// assert.throws(() => new URLSearchParams(DOMException.prototype), TypeError);
assert.throws(() => {
  new URLSearchParams({
    toString() { throw new TypeError('Illegal invocation'); }
  });
}, TypeError);
params = new URLSearchParams('');
assert.notEqual(params, null, 'constructor returned non-null value.');
// eslint-disable-next-line no-proto
assert.strictEqual(params.__proto__, URLSearchParams.prototype,
                   'expected URLSearchParams.prototype as prototype.');
params = new URLSearchParams({});
// assert.strictEqual(params + '', '%5Bobject+Object%5D=');
assert.strictEqual(params + '', '%5Bobject%20Object%5D=');

// URLSearchParams constructor, string.
params = new URLSearchParams('a=b');
assert.notEqual(params, null, 'constructor returned non-null value.');
assert.strictEqual(true, params.has('a'),
                   'Search params object has name "a"');
assert.strictEqual(false, params.has('b'),
                   'Search params object has not got name "b"');
params = new URLSearchParams('a=b&c');
assert.notEqual(params, null, 'constructor returned non-null value.');
assert.strictEqual(true, params.has('a'),
                   'Search params object has name "a"');
assert.strictEqual(true, params.has('c'),
                   'Search params object has name "c"');
params = new URLSearchParams('&a&&& &&&&&a+b=& c&m%c3%b8%c3%b8');
assert.notEqual(params, null, 'constructor returned non-null value.');
assert.strictEqual(true, params.has('a'), 'Search params object has name "a"');
assert.strictEqual(true, params.has('a b'),
                   'Search params object has name "a b"');
assert.strictEqual(true, params.has(' '),
                   'Search params object has name " "');
assert.strictEqual(false, params.has('c'),
                   'Search params object did not have the name "c"');
assert.strictEqual(true, params.has(' c'),
                   'Search params object has name " c"');
assert.strictEqual(true, params.has('møø'),
                   'Search params object has name "møø"');

// URLSearchParams constructor, object.
const seed = new URLSearchParams('a=b&c=d');
params = new URLSearchParams(seed);
assert.notEqual(params, null, 'constructor returned non-null value.');
assert.strictEqual(params.get('a'), 'b');
assert.strictEqual(params.get('c'), 'd');
assert.strictEqual(false, params.has('d'));
// The name-value pairs are copied when created; later updates
// should not be observable.
seed.append('e', 'f');
assert.strictEqual(false, params.has('e'));
params.append('g', 'h');
assert.strictEqual(false, seed.has('g'));

// Parse +
params = new URLSearchParams('a=b+c');
assert.strictEqual(params.get('a'), 'b c');
params = new URLSearchParams('a+b=c');
assert.strictEqual(params.get('a b'), 'c');

// Parse space
params = new URLSearchParams('a=b c');
assert.strictEqual(params.get('a'), 'b c');
params = new URLSearchParams('a b=c');
assert.strictEqual(params.get('a b'), 'c');

// Parse %20
params = new URLSearchParams('a=b%20c');
assert.strictEqual(params.get('a'), 'b c');
params = new URLSearchParams('a%20b=c');
assert.strictEqual(params.get('a b'), 'c');

// Parse \0
params = new URLSearchParams('a=b\0c');
assert.strictEqual(params.get('a'), 'b\0c');
params = new URLSearchParams('a\0b=c');
assert.strictEqual(params.get('a\0b'), 'c');

// Parse %00
params = new URLSearchParams('a=b%00c');
assert.strictEqual(params.get('a'), 'b\0c');
params = new URLSearchParams('a%00b=c');
assert.strictEqual(params.get('a\0b'), 'c');

// Parse \u2384 (Unicode Character 'COMPOSITION SYMBOL' (U+2384))
params = new URLSearchParams('a=b\u2384');
assert.strictEqual(params.get('a'), 'b\u2384');
params = new URLSearchParams('a\u2384b=c');
assert.strictEqual(params.get('a\u2384b'), 'c');

// Parse %e2%8e%84 (Unicode Character 'COMPOSITION SYMBOL' (U+2384))
params = new URLSearchParams('a=b%e2%8e%84');
assert.strictEqual(params.get('a'), 'b\u2384');
params = new URLSearchParams('a%e2%8e%84b=c');
assert.strictEqual(params.get('a\u2384b'), 'c');

// Parse \uD83D\uDCA9 (Unicode Character 'PILE OF POO' (U+1F4A9))
params = new URLSearchParams('a=b\uD83D\uDCA9c');
assert.strictEqual(params.get('a'), 'b\uD83D\uDCA9c');
params = new URLSearchParams('a\uD83D\uDCA9b=c');
assert.strictEqual(params.get('a\uD83D\uDCA9b'), 'c');

// Parse %f0%9f%92%a9 (Unicode Character 'PILE OF POO' (U+1F4A9))
params = new URLSearchParams('a=b%f0%9f%92%a9c');
assert.strictEqual(params.get('a'), 'b\uD83D\uDCA9c');
params = new URLSearchParams('a%f0%9f%92%a9b=c');
assert.strictEqual(params.get('a\uD83D\uDCA9b'), 'c');