feat: Implement chat functionality

app/Http/Controllers/DynamicController.php

@@ -46,7 +46,7 @@ class DynamicController extends Controller
     {
         $this->authorize('view', $dynamic);
 
-        $dynamic->load('ledgers', 'participants');
+        $dynamic->load('ledgers', 'participants', 'chat.messages.user');
 
         return Inertia::render('Dynamics/Show', [
             'dynamic' => $dynamic,

app/Http/Controllers/LedgerController.php

@@ -43,7 +43,7 @@ class LedgerController extends Controller
     {
         $this->authorize('view', $ledger);
 
-        $ledger->load('mutations.user');
+        $ledger->load('mutations.user', 'mutations.chat.messages.user');
 
         return Inertia::render('Ledgers/Show', [
             'dynamic' => $dynamic,

app/Http/Controllers/MessageController.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Http\Requests\StoreMessageRequest;
+use App\Models\Chat;
+use App\Models\Message;
+use Illuminate\Http\Request;
+
+class MessageController extends Controller
+{
+    /**
+     * Display a listing of the resource.
+     */
+    public function index()
+    {
+        //
+    }
+
+    /**
+     * Show the form for creating a new resource.
+     */
+    public function create()
+    {
+        //
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(StoreMessageRequest $request, Chat $chat)
+    {
+        $chat->messages()->create([
+            ...$request->validated(),
+            'user_id' => $request->user()->id,
+        ]);
+
+        return redirect()->back();
+    }
+
+    /**
+     * Display the specified resource.
+     */
+    public function show(Message $message)
+    {
+        //
+    }
+
+    /**
+     * Show the form for editing the specified resource.
+     */
+    public function edit(Message $message)
+    {
+        //
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(Request $request, Message $message)
+    {
+        //
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(Message $message)
+    {
+        //
+    }
+}

app/Http/Requests/StoreMessageRequest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+
+use App\Models\Chat;
+
+class StoreMessageRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        $chat = $this->route('chat');
+
+        return $chat && $this->user()->can('view', $chat->chatable);
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'content' => ['required', 'string'],
+        ];
+    }
+}

app/Models/Chat.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+
+class Chat extends Model
+{
+    /** @use HasFactory<\Database\Factories\ChatFactory> */
+    use HasFactory;
+
+    public function chatable(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    public function messages(): HasMany
+    {
+        return $this->hasMany(Message::class);
+    }
+}

app/Models/Dynamic.php

@@ -7,6 +7,7 @@ use Illuminate\Database\Eloquent\Model;
 
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\MorphOne;
 
 class Dynamic extends Model
 {
@@ -27,4 +28,16 @@ class Dynamic extends Model
     {
         return $this->hasMany(Ledger::class);
     }
+
+    public function chat(): MorphOne
+    {
+        return $this->morphOne(Chat::class, 'chatable');
+    }
+
+    protected static function booted(): void
+    {
+        static::created(function (Dynamic $dynamic) {
+            $dynamic->chat()->create([]);
+        });
+    }
 }

app/Models/Message.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Message extends Model
+{
+    /** @use HasFactory<\Database\Factories\MessageFactory> */
+    use HasFactory;
+
+    protected $fillable = [
+        'chat_id',
+        'user_id',
+        'content',
+    ];
+
+    public function chat(): BelongsTo
+    {
+        return $this->belongsTo(Chat::class);
+    }
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+}

app/Models/Mutation.php

@@ -6,6 +6,7 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\MorphOne;
 
 class Mutation extends Model
 {
@@ -30,4 +31,16 @@ class Mutation extends Model
     {
         return $this->belongsTo(User::class);
     }
+
+    public function chat(): MorphOne
+    {
+        return $this->morphOne(Chat::class, 'chatable');
+    }
+
+    protected static function booted(): void
+    {
+        static::created(function (Mutation $mutation) {
+            $mutation->chat()->create([]);
+        });
+    }
 }

database/factories/ChatFactory.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Chat;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<Chat>
+ */
+class ChatFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            //
+        ];
+    }
+}

database/factories/MessageFactory.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Message;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<Message>
+ */
+class MessageFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            //
+        ];
+    }
+}

database/migrations/2026_06_14_223609_create_messages_table.php

@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('messages', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('chat_id')->constrained()->cascadeOnDelete();
+            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
+            $table->text('content');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('messages');
+    }
+};

database/migrations/2026_06_14_223624_create_chats_table.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('chats', function (Blueprint $table) {
+            $table->id();
+            $table->morphs('chatable');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('chats');
+    }
+};

resources/js/components/Chat.vue

@@ -0,0 +1,48 @@
+<script setup>
+import { useForm } from '@inertiajs/vue3';
+import { route } from 'ziggy-js';
+
+const props = defineProps({
+    chat: Object,
+});
+
+const form = useForm({
+    content: '',
+});
+
+function submit() {
+    form.post(route('chats.messages.store', props.chat.id), {
+        onSuccess: () => form.reset(),
+    });
+}
+</script>
+
+<template>
+    <div class="mt-8">
+        <h4 class="text-lg font-medium text-gray-900 dark:text-gray-100">Chat</h4>
+        <div class="mt-4 space-y-4">
+            <div v-for="message in chat.messages" :key="message.id" class="p-4 bg-white dark:bg-gray-800 overflow-hidden shadow-sm sm:rounded-lg">
+                <div class="flex justify-between">
+                    <span class="font-semibold">{{ message.user.name }}</span>
+                    <span class="text-xs text-gray-500">{{ new Date(message.created_at).toLocaleString() }}</span>
+                </div>
+                <p class="mt-2 text-sm text-gray-600 dark:text-gray-400">{{ message.content }}</p>
+            </div>
+            <div v-if="chat.messages.length === 0" class="text-gray-500">
+                No messages yet.
+            </div>
+        </div>
+        <form @submit.prevent="submit" class="mt-6 space-y-6">
+            <div>
+                <label for="content" class="block text-sm font-medium text-gray-700 dark:text-gray-300">Message</label>
+                <textarea v-model="form.content" id="content" rows="3" class="mt-1 block w-full border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 focus:border-indigo-500 dark:focus:border-indigo-600 focus:ring-indigo-500 dark:focus:ring-indigo-600 rounded-md shadow-sm"></textarea>
+                <div v-if="form.errors.content" class="text-sm text-red-600">{{ form.errors.content }}</div>
+            </div>
+            <div class="flex items-center gap-4">
+                <button type="submit" :disabled="form.processing" class="inline-flex items-center px-4 py-2 bg-gray-800 dark:bg-gray-200 border border-transparent rounded-md font-semibold text-xs text-white dark:text-gray-800 uppercase tracking-widest hover:bg-gray-700 dark:hover:bg-white focus:bg-gray-700 dark:focus:bg-white active:bg-gray-900 dark:active:bg-gray-300 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 transition ease-in-out duration-150">
+                    Send
+                </button>
+            </div>
+        </form>
+    </div>
+</template>

resources/js/pages/Dynamics/Show.vue

@@ -1,5 +1,6 @@
 <script setup>
 import AppLayout from '@/layouts/AppLayout.vue';
+import Chat from '@/components/Chat.vue';
 import { Head, Link, useForm } from '@inertiajs/vue3';
 import { route } from 'ziggy-js';
 
@@ -43,6 +44,8 @@ function submit() {
                     </div>
                 </div>
 
+                <Chat :chat="dynamic.chat" />
+
                 <div class="mt-8">
                     <h4 class="text-lg font-medium text-gray-900 dark:text-gray-100">Participants</h4>
                     <ul class="mt-4 grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">

resources/js/pages/Ledgers/Show.vue

@@ -1,5 +1,6 @@
 <script setup>
 import AppLayout from '@/layouts/AppLayout.vue';
+import Chat from '@/components/Chat.vue';
 import { Head, useForm } from '@inertiajs/vue3';
 import { route } from 'ziggy-js';
 
@@ -85,6 +86,7 @@ function submit() {
                             </div>
                             <p class="mt-2 text-sm text-gray-600 dark:text-gray-400">{{ mutation.description }}</p>
                             <div class="mt-2 text-xs text-gray-500">{{ new Date(mutation.created_at).toLocaleString() }}</div>
+                            <Chat :chat="mutation.chat" />
                         </li>
                     </ul>
                     <div v-if="ledger.mutations.length === 0" class="mt-4 text-gray-500">

routes/web.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Http\Controllers\MessageController;
 use App\Http\Controllers\MutationController;
 use App\Http\Controllers\DynamicController;
 use App\Http\Controllers\LedgerController;
@@ -13,6 +14,8 @@ Route::middleware(['auth', 'verified'])->group(function () {
     Route::resource('dynamics', DynamicController::class);
     Route::resource('dynamics.ledgers', LedgerController::class)->scoped();
     Route::resource('dynamics.ledgers.mutations', MutationController::class)->scoped();
+
+    Route::post('/chats/{chat}/messages', [MessageController::class, 'store'])->name('chats.messages.store');
 });
 
 require __DIR__.'/settings.php';