# frozen_string_literal: true

require_relative "helper"

module Arel
  class InsertManagerTest < Arel::Spec
    describe "new" do
      it "takes an engine" do
        Arel::InsertManager.new
      end
    end

    describe "insert" do
      it "can create a ValuesList node" do
        manager = Arel::InsertManager.new
        values  = manager.create_values_list([%w{ a b }, %w{ c d }])

        assert_kind_of Arel::Nodes::ValuesList, values
        assert_equal [%w{ a b }, %w{ c d }], values.rows
      end

      it "allows sql literals" do
        manager = Arel::InsertManager.new
        manager.into Table.new(:users)
        manager.values = manager.create_values([Arel.sql("*")])
        manager.to_sql.must_be_like %{
          INSERT INTO \"users\" VALUES (*)
        }
      end

      it "works with multiple values" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.into table

        manager.columns << table[:id]
        manager.columns << table[:name]

        manager.values = manager.create_values_list([
          %w{1 david},
          %w{2 kir},
          ["3", Arel.sql("DEFAULT")],
        ])

        manager.to_sql.must_be_like %{
          INSERT INTO \"users\" (\"id\", \"name\") VALUES ('1', 'david'), ('2', 'kir'), ('3', DEFAULT)
        }
      end

      it "literals in multiple values are not escaped" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.into table

        manager.columns << table[:name]

        manager.values = manager.create_values_list([
          [Arel.sql("*")],
          [Arel.sql("DEFAULT")],
        ])

        manager.to_sql.must_be_like %{
          INSERT INTO \"users\" (\"name\") VALUES (*), (DEFAULT)
        }
      end

      it "works with multiple single values" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.into table

        manager.columns << table[:name]

        manager.values = manager.create_values_list([
          %w{david},
          %w{kir},
          [Arel.sql("DEFAULT")],
        ])

        manager.to_sql.must_be_like %{
          INSERT INTO \"users\" (\"name\") VALUES ('david'), ('kir'), (DEFAULT)
        }
      end

      it "inserts false" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new

        manager.insert [[table[:bool], false]]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("bool") VALUES ('f')
        }
      end

      it "inserts null" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.insert [[table[:id], nil]]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id") VALUES (NULL)
        }
      end

      it "inserts time" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new

        time = Time.now
        attribute = table[:created_at]

        manager.insert [[attribute, time]]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("created_at") VALUES (#{Table.engine.connection.quote time})
        }
      end

      it "takes a list of lists" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.into table
        manager.insert [[table[:id], 1], [table[:name], "aaron"]]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id", "name") VALUES (1, 'aaron')
        }
      end

      it "defaults the table" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.insert [[table[:id], 1], [table[:name], "aaron"]]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id", "name") VALUES (1, 'aaron')
        }
      end

      it "noop for empty list" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        manager.insert [[table[:id], 1]]
        manager.insert []
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id") VALUES (1)
        }
      end

      it "is chainable" do
        table = Table.new(:users)
        manager = Arel::InsertManager.new
        insert_result = manager.insert [[table[:id], 1]]
        assert_equal manager, insert_result
      end
    end

    describe "into" do
      it "takes a Table and chains" do
        manager = Arel::InsertManager.new
        manager.into(Table.new(:users)).must_equal manager
      end

      it "converts to sql" do
        table   = Table.new :users
        manager = Arel::InsertManager.new
        manager.into table
        manager.to_sql.must_be_like %{
          INSERT INTO "users"
        }
      end
    end

    describe "columns" do
      it "converts to sql" do
        table   = Table.new :users
        manager = Arel::InsertManager.new
        manager.into table
        manager.columns << table[:id]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id")
        }
      end
    end

    describe "values" do
      it "converts to sql" do
        table   = Table.new :users
        manager = Arel::InsertManager.new
        manager.into table

        manager.values = Nodes::ValuesList.new([[1], [2]])
        manager.to_sql.must_be_like %{
          INSERT INTO "users" VALUES (1), (2)
        }
      end

      it "accepts sql literals" do
        table   = Table.new :users
        manager = Arel::InsertManager.new
        manager.into table

        manager.values = Arel.sql("DEFAULT VALUES")
        manager.to_sql.must_be_like %{
          INSERT INTO "users" DEFAULT VALUES
        }
      end
    end

    describe "combo" do
      it "combines columns and values list in order" do
        table   = Table.new :users
        manager = Arel::InsertManager.new
        manager.into table

        manager.values = Nodes::ValuesList.new([[1, "aaron"], [2, "david"]])
        manager.columns << table[:id]
        manager.columns << table[:name]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id", "name") VALUES (1, 'aaron'), (2, 'david')
        }
      end
    end

    describe "select" do
      it "accepts a select query in place of a VALUES clause" do
        table   = Table.new :users

        manager = Arel::InsertManager.new
        manager.into table

        select = Arel::SelectManager.new
        select.project Arel.sql("1")
        select.project Arel.sql('"aaron"')

        manager.select select
        manager.columns << table[:id]
        manager.columns << table[:name]
        manager.to_sql.must_be_like %{
          INSERT INTO "users" ("id", "name") (SELECT 1, "aaron")
        }
      end
    end
  end
end