require 'rails_helper'

describe "DayLogs", type: :request do
  let(:user) { create(:user) }
  let(:mode) { create(:mode, user: user) }
  let(:day) { Date.parse("2026-01-15") }

  describe "GET /day_logs/new" do
    context "when not authenticated" do
      it "redirects to the login page" do
        get new_day_log_path
        expect(response).to redirect_to(new_session_path)
      end
    end

    context "when authenticated" do
      before { login_as(user) }

      it "returns http success" do
        get new_day_log_path
        expect(response).to have_http_status(:success)
      end
    end
  end

  describe "POST /day_logs" do
    context "when not authenticated" do
      it "redirects to the login page" do
        post day_logs_path, params: { day_log: { day: day, info: "Une info" } }
        expect(response).to redirect_to(new_session_path)
      end
    end

    context "when authenticated" do
      before { login_as(user) }

      context "with valid params" do
        context "without mode" do
          it "creates a day_log" do
            expect {
              post day_logs_path, params: { day_log: { day: day, info: "Une info" } }
            }.to change(DayLog, :count).by(1)
          end

          it "does not create a mood" do
            expect {
              post day_logs_path, params: { day_log: { day: day, info: "Une info" } }
            }.not_to change(Mood, :count)
          end
        end

        context "with mode, no existing mood" do
          it "creates a day_log" do
            expect {
              post day_logs_path, params: { day_log: { day: day, info: "Une info", mode_id: mode.id } }
            }.to change(DayLog, :count).by(1)
          end

          it "creates a mood" do
            expect {
              post day_logs_path, params: { day_log: { day: day, info: "Une info", mode_id: mode.id } }
            }.to change(Mood, :count).by(1)
          end
        end

        context "with mode, existing mood" do
          let!(:existing_mood) { create(:mood, user: user, mode: mode, recorded_at: DateTime.parse("2026-01-15 08:00:00")) }
          let(:other_mode) { create(:mode, user: user) }

          it "creates a day_log" do
            expect {
              post day_logs_path, params: { day_log: { day: day, info: "Une info", mode_id: other_mode.id } }
            }.to change(DayLog, :count).by(1)
          end

          it "does not create a new mood" do
            expect {
              post day_logs_path, params: { day_log: { day: day, info: "Une info", mode_id: other_mode.id } }
            }.not_to change(Mood, :count)
          end

          it "updates the existing mood mode" do
            post day_logs_path, params: { day_log: { day: day, info: "Une info", mode_id: other_mode.id } }
            expect(existing_mood.reload.mode).to eq(other_mode)
          end
        end

        it "redirects after creation" do
          post day_logs_path, params: { day_log: { day: day, info: "Une info" } }
          expect(response).to have_http_status(:redirect)
        end
      end

      context "with invalid params" do
        it "does not create a day_log" do
          expect {
            post day_logs_path, params: { day_log: { day: nil, info: nil } }
          }.not_to change(DayLog, :count)
        end

        it "returns unprocessable entity" do
          post day_logs_path, params: { day_log: { day: nil, info: nil } }
          expect(response).to have_http_status(:unprocessable_entity)
        end
      end
    end
  end
end