require 'cases/helper'
require 'support/schema_dumping_helper'

if ActiveRecord::Base.connection.supports_json?
class Mysql2JSONTest < ActiveRecord::Mysql2TestCase
  include SchemaDumpingHelper
  self.use_transactional_tests = false

  class JsonDataType < ActiveRecord::Base
    self.table_name = 'json_data_type'

    store_accessor :settings, :resolution
  end

  def setup
    @connection = ActiveRecord::Base.connection
    begin
      @connection.create_table('json_data_type') do |t|
        t.json 'payload'
        t.json 'settings'
      end
    end
  end

  def teardown
    @connection.drop_table :json_data_type, if_exists: true
    JsonDataType.reset_column_information
  end

  def test_column
    column = JsonDataType.columns_hash["payload"]
    assert_equal :json, column.type
    assert_equal 'json', column.sql_type

    type = JsonDataType.type_for_attribute("payload")
    assert_not type.binary?
  end

  def test_change_table_supports_json
    @connection.change_table('json_data_type') do |t|
      t.json 'users'
    end
    JsonDataType.reset_column_information
    column = JsonDataType.columns_hash['users']
    assert_equal :json, column.type
  end

  def test_schema_dumping
    output = dump_table_schema("json_data_type")
    assert_match(/t\.json\s+"settings"/, output)
  end

  def test_cast_value_on_write
    x = JsonDataType.new payload: {"string" => "foo", :symbol => :bar}
    assert_equal({"string" => "foo", :symbol => :bar}, x.payload_before_type_cast)
    assert_equal({"string" => "foo", "symbol" => "bar"}, x.payload)
    x.save
    assert_equal({"string" => "foo", "symbol" => "bar"}, x.reload.payload)
  end

  def test_type_cast_json
    type = JsonDataType.type_for_attribute("payload")

    data = "{\"a_key\":\"a_value\"}"
    hash = type.deserialize(data)
    assert_equal({'a_key' => 'a_value'}, hash)
    assert_equal({'a_key' => 'a_value'}, type.deserialize(data))

    assert_equal({}, type.deserialize("{}"))
    assert_equal({'key'=>nil}, type.deserialize('{"key": null}'))
    assert_equal({'c'=>'}','"a"'=>'b "a b'}, type.deserialize(%q({"c":"}", "\"a\"":"b \"a b"})))
  end

  def test_rewrite
    @connection.execute "insert into json_data_type (payload) VALUES ('{\"k\":\"v\"}')"
    x = JsonDataType.first
    x.payload = { '"a\'' => 'b' }
    assert x.save!
  end

  def test_select
    @connection.execute "insert into json_data_type (payload) VALUES ('{\"k\":\"v\"}')"
    x = JsonDataType.first
    assert_equal({'k' => 'v'}, x.payload)
  end

  def test_select_multikey
    @connection.execute %q|insert into json_data_type (payload) VALUES ('{"k1":"v1", "k2":"v2", "k3":[1,2,3]}')|
    x = JsonDataType.first
    assert_equal({'k1' => 'v1', 'k2' => 'v2', 'k3' => [1,2,3]}, x.payload)
  end

  def test_null_json
    @connection.execute %q|insert into json_data_type (payload) VALUES(null)|
    x = JsonDataType.first
    assert_equal(nil, x.payload)
  end

  def test_select_array_json_value
    @connection.execute %q|insert into json_data_type (payload) VALUES ('["v0",{"k1":"v1"}]')|
    x = JsonDataType.first
    assert_equal(['v0', {'k1' => 'v1'}], x.payload)
  end

  def test_select_nil_json_after_create
    json = JsonDataType.create(payload: nil)
    x = JsonDataType.where(payload:nil).first
    assert_equal(json, x)
  end

  def test_select_nil_json_after_update
    json = JsonDataType.create(payload: "foo")
    x = JsonDataType.where(payload:nil).first
    assert_equal(nil, x)

    json.update_attributes payload: nil
    x = JsonDataType.where(payload:nil).first
    assert_equal(json.reload, x)
  end

  def test_rewrite_array_json_value
    @connection.execute %q|insert into json_data_type (payload) VALUES ('["v0",{"k1":"v1"}]')|
    x = JsonDataType.first
    x.payload = ["v1", { "k2" => "v2" }, "v3"]
    assert x.save!
  end

  def test_with_store_accessors
    x = JsonDataType.new(resolution: "320×480")
    assert_equal "320×480", x.resolution

    x.save!
    x = JsonDataType.first
    assert_equal "320×480", x.resolution

    x.resolution = "640×1136"
    x.save!

    x = JsonDataType.first
    assert_equal "640×1136", x.resolution
  end

  def test_duplication_with_store_accessors
    x = JsonDataType.new(resolution: "320×480")
    assert_equal "320×480", x.resolution

    y = x.dup
    assert_equal "320×480", y.resolution
  end

  def test_yaml_round_trip_with_store_accessors
    x = JsonDataType.new(resolution: "320×480")
    assert_equal "320×480", x.resolution

    y = YAML.load(YAML.dump(x))
    assert_equal "320×480", y.resolution
  end

  def test_changes_in_place
    json = JsonDataType.new
    assert_not json.changed?

    json.payload = { 'one' => 'two' }
    assert json.changed?
    assert json.payload_changed?

    json.save!
    assert_not json.changed?

    json.payload['three'] = 'four'
    assert json.payload_changed?

    json.save!
    json.reload

    assert_equal({ 'one' => 'two', 'three' => 'four' }, json.payload)
    assert_not json.changed?
  end

  def test_assigning_string_literal
    json = JsonDataType.create(payload: "foo")
    assert_equal "foo", json.payload
  end

  def test_assigning_number
    json = JsonDataType.create(payload: 1.234)
    assert_equal 1.234, json.payload
  end

  def test_assigning_boolean
    json = JsonDataType.create(payload: true)
    assert_equal true, json.payload
  end
end
end
