ChanrengeA/tokiwa_takumi

challengeA/tokiwa_takumi/.gitignore

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+/spec/examples.txt

challengeA/tokiwa_takumi/.rspec

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+--require spec_helper

challengeA/tokiwa_takumi/Gemfile

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+# frozen_string_literal: true
+
+ source "https://rubygems.org"
+
+ git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+ gem "rspec"
+

challengeA/tokiwa_takumi/Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    diff-lcs (1.4.4)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  rspec
+
+BUNDLED WITH
+   2.1.2

challengeA/tokiwa_takumi/csv/jxtg/basic_charge.csv

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+ampere,basic_charge
+30,858.00
+40,1144.00
+50,1430.00
+60,1716.00

challengeA/tokiwa_takumi/csv/jxtg/info.csv

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+provider_name,plan_name
+JXTGでんき,従量電灯Bたっぷりプラン

challengeA/tokiwa_takumi/csv/jxtg/usage_charge.csv

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+greater_than,less_than,unit_charge
+0,120,19.88
+120,300,26.48
+300,600,25.08
+600,,26.15

challengeA/tokiwa_takumi/csv/looop/basic_charge.csv

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+ampere,basic_charge
+10,0.00
+20,0.00
+30,0.00
+40,0.00
+50,0.00
+60,0.00

challengeA/tokiwa_takumi/csv/looop/info.csv

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+provider_name,plan_name
+Looopでんき,おうちプラン

challengeA/tokiwa_takumi/csv/looop/usage_charge.csv

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+greater_than,less_than,unit_charge
+0,,26.40

challengeA/tokiwa_takumi/csv/tepco/basic_charge.csv

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+ampere,basic_charge
+10,286.00
+15,419.00
+20,572.00
+30,858.00
+40,1144.00
+50,1430.00
+60,1716.00

challengeA/tokiwa_takumi/csv/tepco/info.csv

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+provider_name,plan_name
+東京電力エナジーパートナー,従量電灯B

challengeA/tokiwa_takumi/csv/tepco/usage_charge.csv

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+greater_than,less_than,unit_charge
+0,120,19.88
+120,300,26.48
+300,,30.57

challengeA/tokiwa_takumi/csv/tokyo_gas/basic_charge.csv

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+ampere,basic_charge
+30,858.00
+40,1144.00
+50,1430.00
+60,1716.00

challengeA/tokiwa_takumi/csv/tokyo_gas/info.csv

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+provider_name,plan_name
+東京ガス,ずっともでんき１

challengeA/tokiwa_takumi/csv/tokyo_gas/usage_charge.csv

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+greater_than,less_than,unit_charge
+0,140,23.67
+140,350,23.88
+350,,26.41

challengeA/tokiwa_takumi/lib/csv_plan.rb

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+require 'csv'
+require_relative 'plan'
+
+class CSVPlan
+  attr_reader :provider_name, :plan_name, :basic_charge_list, :usage_charge_list
+
+  def initialize(provider_name, plan_name, basic_charge_list, usage_charge_list)
+    @provider_name = provider_name
+    @plan_name = plan_name
+    @basic_charge_list = basic_charge_list
+    @usage_charge_list = usage_charge_list
+  end
+
+  def convert_to_plan
+    Plan.new(
+      provider_name,
+      plan_name,
+      basic_charge_list,
+      usage_charge_list
+    )
+  end
+
+  class << self
+    def create_list_from_csv
+      plans = []
+      plans_dir = Dir.glob('../csv/*', base: __dir__)
+      plans_dir.each do |plan|
+        info = CSV.table(File.expand_path("./#{plan}/info.csv", __dir__))
+        plans << CSVPlan.new(info[:provider_name][0],
+                             info[:plan_name][0],
+                             CSV.read(File.expand_path("./#{plan}/basic_charge.csv", __dir__), headers: true).map(&:to_hash),
+                             CSV.read(File.expand_path("./#{plan}/usage_charge.csv", __dir__), headers: true).map(&:to_hash)
+        )
+      end
+      plans
+    end
+  end
+end

challengeA/tokiwa_takumi/lib/plan.rb

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+class Plan
+  attr_reader :provider_name, :plan_name, :basic_charge_list, :usage_charge_list
+
+  def initialize(provider_name, plan_name, basic_charge_list, usage_charge_list)
+    @provider_name = provider_name
+    @plan_name = plan_name
+    @basic_charge_list = basic_charge_list
+    @usage_charge_list = usage_charge_list
+  end
+
+  def basic_charge(ampere)
+    basic_charge_plan = basic_charge_list.find{ |c| c["ampere"].to_i == ampere }
+    basic_charge_plan["basic_charge"].to_i unless basic_charge_plan.nil?
+  end
+
+  def usage_charge(monthly_amount_kwh)
+    charge = 0
+    usage_charge_list.each do |usage_charge|
+      gt = usage_charge["greater_than"].to_i
+      lt = usage_charge["less_than"].to_i
+      unit_charge = usage_charge["unit_charge"].to_f
+      if lt.zero? && gt < monthly_amount_kwh # 最大区分
+        charge += (monthly_amount_kwh - gt) * unit_charge
+      elsif lt <= monthly_amount_kwh && !lt.zero? # 超過する区分
+        charge += (lt - gt) * unit_charge
+      elsif gt < monthly_amount_kwh && monthly_amount_kwh < lt # 超過しない区分
+        charge += (monthly_amount_kwh - gt) * unit_charge
+      end
+    end
+    charge
+  end
+end

challengeA/tokiwa_takumi/lib/simulator.rb

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+require_relative 'csv_plan'
+
+class Simulator
+
+  def initialize(ampere, monthly_amount_kwh)
+    @ampere = ampere
+    @monthly_amount_kwh = monthly_amount_kwh
+    suggest_plan
+  end
+
+  def simulate
+    @suggest_plans.flatten
+  end
+
+  private
+
+  def suggest_plan
+    @suggest_plans = []
+    plan_list = CSVPlan.create_list_from_csv.map(&:convert_to_plan)
+    @suggest_plans = plan_list.map{ |plan| simulate_charge(plan) }
+  end
+
+  def simulate_charge(plan)
+    basic_charge = plan.basic_charge(@ampere)
+    return if basic_charge.nil? ## 対応するアンペアなし
+
+    price = basic_charge + plan.usage_charge(@monthly_amount_kwh)
+    {
+      "provider_name": plan.provider_name,
+      "plan_name": plan.plan_name,
+      "price": price
+    }
+  end
+end

challengeA/tokiwa_takumi/spec/plan_spec.rb

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+require "spec_helper"
+
+RSpec.describe Plan do
+  let!(:plan) { CSVPlan.create_list_from_csv.map(&:convert_to_plan) }
+
+  describe "東京ガスずっともでんき１" do
+    let!(:tokyo_gas) { plan.find{ |plan| plan.provider_name == "東京ガス" }}
+
+    describe "基本料金の算出が正しいこと" do
+      it "対応アンペアが存在する" do
+        expect(tokyo_gas.basic_charge(30)).to eq 858
+      end
+
+      it "対応アンペアが存在しない" do
+        expect(tokyo_gas.basic_charge(100)).to eq nil
+      end
+    end
+
+    describe "従量課金料金の算出が正しいこと" do
+      it "1つの区分で収まる使用量で算出する" do
+        expect(tokyo_gas.usage_charge(100)).to eq (23.67 * 100)
+      end
+
+      it "2つ以上の区分にまたがる使用量で算出する" do
+        expect_value = (23.67 * 140) + (23.88 * 160)
+        expect(tokyo_gas.usage_charge(300)).to eq expect_value
+      end
+
+      it "一番上の区分まで使用した算出をする" do
+        expect_value = (23.67 * 140) + (23.88 * 210) + (26.41 * 50)
+        expect(tokyo_gas.usage_charge(400)).to eq expect_value
+      end
+    end
+  end
+
+  describe "東京エナジーパートナー従量電灯B" do
+    let!(:tepco) { plan.find{ |plan| plan.provider_name == "東京電力エナジーパートナー" }}
+
+    describe "基本料金の算出が正しいこと" do
+      it "対応アンペアが存在する" do
+        expect(tepco.basic_charge(40)).to eq 1144
+      end
+
+      it "対応アンペアが存在しない" do
+        expect(tepco.basic_charge(100)).to eq nil
+      end
+    end
+
+    describe "従量課金料金の算出が正しいこと" do
+      it "1つの区分で収まる使用量で算出する" do
+        expect(tepco.usage_charge(100)).to eq (19.88 * 100)
+      end
+
+      it "2つ以上の区分にまたがる使用量で算出する" do
+        expect_value = (19.88 * 120) + (26.48 * 180)
+        expect(tepco.usage_charge(300)).to eq expect_value
+      end
+
+      it "一番上の区分まで使用した算出をする" do
+        expect_value = (19.88 * 120) + (26.48 * 180) + (30.57 * 100)
+        expect(tepco.usage_charge(400)).to eq expect_value
+      end
+    end
+  end
+
+  describe "Loop電気おうちプラン" do
+    let!(:loop) { plan.find{ |plan| plan.provider_name == "Looopでんき" }}
+
+    describe "基本料金の算出が正しいこと" do
+      it "対応アンペアが存在する" do
+        expect(loop.basic_charge(40)).to eq 0
+      end
+
+      it "対応アンペアが存在しない" do
+        expect(loop.basic_charge(100)).to eq nil
+      end
+    end
+
+    it "基本料金の算出が正しいこと" do
+      expect(loop.basic_charge(40)).to eq 0
+    end
+
+    describe "従量課金料金の算出が正しいこと(区分が1つのみ)" do
+      it "1つの区分だけで算出されること" do
+        expect(loop.usage_charge(500)).to eq (26.40 * 500)
+      end
+    end
+  end
+
+  describe "JXTGでんき従量電灯Bたっぷりプラン" do
+    let!(:jxtg) { plan.find{ |plan| plan.provider_name == "JXTGでんき" }}
+
+    describe "基本料金の算出が正しいこと" do
+      it "対応アンペアが存在する" do
+        expect(jxtg.basic_charge(50)).to eq 1430
+      end
+
+      it "対応アンペアが存在しない" do
+        expect(jxtg.basic_charge(100)).to eq nil
+      end
+    end
+
+    describe "従量課金料金の算出が正しいこと" do
+      it "1つの区分で収まる使用量で算出する" do
+        expect(jxtg.usage_charge(100)).to eq (19.88 * 100)
+      end
+
+      it "2つ以上の区分にまたがる使用量で算出する" do
+        expect_value = (19.88 * 120) + (26.48 * 180)
+        expect(jxtg.usage_charge(300)).to eq expect_value
+      end
+
+      it "一番上の区分まで使用した算出をする" do
+        expect_value = (19.88 * 120) + (26.48 * 180) + (25.08 * 300) + (26.15 * 50)
+        expect(jxtg.usage_charge(650)).to eq expect_value
+      end
+    end
+  end
+end

challengeA/tokiwa_takumi/spec/simulator_spec.rb

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+require "spec_helper"
+
+RSpec.describe Simulator do
+  describe "simulatorの結果をが期待どおりであること" do
+    let!(:simulator) { Simulator.new(40, 300) }
+
+    it "simulator" do
+      expect(simulator.simulate.count).to eq 4
+      expect(simulator.simulate).to match_array [
+        {
+          "provider_name": "東京ガス",
+          "plan_name": "ずっともでんき１",
+          "price": 1144 + (23.67 * 140) + (23.88 * 160)
+        },
+        {
+          "provider_name": "JXTGでんき",
+          "plan_name": "従量電灯Bたっぷりプラン",
+          "price": 1144 + (19.88 * 120) + (26.48 * 180)
+        },
+        {
+          "provider_name": "Looopでんき",
+          "plan_name": "おうちプラン",
+          "price": (26.40 * 300)
+        },
+        {
+          "provider_name": "東京電力エナジーパートナー",
+          "plan_name": "従量電灯B",
+          "price": 1144 + (19.88 * 120) + (26.48 * 180)
+        }
+      ]
+    end
+  end
+end