can edit selected day

app/controllers/day_logs_controller.rb

@@ -1,8 +1,9 @@
 class DayLogsController < ApplicationController
-  before_action :set_day_log, only: [ :edit, :update ]
+  before_action :set_day_log, only: [ :update ]
 
-  def new
-    @day_log = DayLog.new
+  def edit
+    @day_log = Current.user.day_logs.find_or_initialize_by(day: params[:day])
+    @mood = Current.user.moods.find_by(recorded_at: params[:day].to_date.beginning_of_day..params[:day].to_date.end_of_day)
   end
 
   def create
@@ -16,9 +17,6 @@ class DayLogsController < ApplicationController
     end
   end
 
-  def edit
-  end
-
   def update
     if @day_log.update(day_log_params)
       handle_mood(@day_log.day, params[:day_log][:mode_id])

app/javascript/controllers/mood_controller.js

@@ -1,16 +1,19 @@
 import { Controller } from '@hotwired/stimulus'
 
 export default class extends Controller {
-  static targets = [ "image", "modeDay" ];
+  static targets = [ "image", "modeDay", "dayLogLink" ];
 
   updateDayInfo(event) {
     const image = this.imageTarget;
     const modeDay = this.modeDayTarget;
-    const modeDayContent = event.target.dataset.day + ' :  ' + event.target.dataset.mode;
+    const day = event.target.dataset.day;
+    const modeDayContent = day + ' :  ' + event.target.dataset.mode;
     image.src = event.target.dataset.image;
     modeDay.textContent = modeDayContent;
     event.target.className = "selected-day " + event.target.dataset.mode;
 
+    this.dayLogLinkTarget.href = `/day_logs/edit?day=${day}`
+
     if (this.lastTarget) {
       this.lastTarget.className = "day " + this.lastTarget.dataset.mode;
     }

app/views/moods/index.html.erb

@@ -23,8 +23,10 @@
         <div class="title is-4">
           <span class="icon"><i class="fa-regular fa-calendar"></i></span>
           <span data-mood-target="modeDay">Aujourd'hui : <%= @user.current_mode.label %></span>
+          <%= link_to "Journal", edit_day_log_for_day_path(day: Date.today), "data-mood-target": "dayLogLink" %>
         </div>
       </div>
+
       <div class="logs">
         <div class="is-flex is-flex-direction-row is-flex-wrap-wrap mb-3">
           <% @user.history.each do |month| %>

config/routes.rb

@@ -22,5 +22,6 @@ Rails.application.routes.draw do
 
   get "/moods", to: "moods#index", as: :dashboard
 
-  resources :day_logs, only: [ :new, :create, :edit, :update ]
+  get "/day_logs/edit", to: "day_logs#edit", as: :edit_day_log_for_day
+  resources :day_logs, only: [ :create, :update ]
 end

spec/requests/day_logs_spec.rb

@@ -5,10 +5,10 @@ describe "DayLogs", type: :request do
   let(:mode) { create(:mode, user: user) }
   let(:day) { Date.parse("2026-01-15") }
 
-  describe "GET /day_logs/new" do
+  describe "GET /day_logs/edit" do
     context "when not authenticated" do
       it "redirects to the login page" do
-        get new_day_log_path
+        get edit_day_log_for_day_path(day: day)
         expect(response).to redirect_to(new_session_path)
       end
     end
@@ -16,9 +16,26 @@ describe "DayLogs", type: :request do
     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)
+      context "with an existing day_log for the day" do
+        let!(:day_log) { create(:day_log, user: user, day: day) }
+
+        it "returns http success" do
+          get edit_day_log_for_day_path(day: day)
+          expect(response).to have_http_status(:success)
+        end
+      end
+
+      context "without an existing day_log for the day" do
+        it "returns http success" do
+          get edit_day_log_for_day_path(day: day)
+          expect(response).to have_http_status(:success)
+        end
+
+        it "does not persist a day_log" do
+          expect {
+            get edit_day_log_for_day_path(day: day)
+          }.not_to change(DayLog, :count)
+        end
       end
     end
   end
@@ -126,6 +143,41 @@ describe "DayLogs", type: :request do
     end
   end
 
+  describe "GET /day_logs/edit" do
+    context "when not authenticated" do
+      it "redirects to the login page" do
+        get edit_day_log_for_day_path(day: day)
+        expect(response).to redirect_to(new_session_path)
+      end
+    end
+
+    context "when authenticated" do
+      before { login_as(user) }
+
+      context "with an existing day_log for the day" do
+        let!(:day_log) { create(:day_log, user: user, day: day) }
+
+        it "returns http success" do
+          get edit_day_log_for_day_path(day: day)
+          expect(response).to have_http_status(:success)
+        end
+      end
+
+      context "without an existing day_log for the day" do
+        it "returns http success" do
+          get edit_day_log_for_day_path(day: day)
+          expect(response).to have_http_status(:success)
+        end
+
+        it "does not persist a day_log" do
+          expect {
+            get edit_day_log_for_day_path(day: day)
+          }.not_to change(DayLog, :count)
+        end
+      end
+    end
+  end
+
   describe "PATCH /day_logs/:id" do
     let!(:day_log) { create(:day_log, user: user, day: day) }