<?php

namespace App\Http\Controllers;

use Illuminate\Support\Facades\Validator;
use Illuminate\Http\Request;
use Illuminate\Http\Response;

use App\Models\Post;
use App\Models\Store;

class PostsController extends Controller
{
    public function getFields(Request $request, $post) {
        // Retrieve the post by the 'body' column (UUID)
        $post = Post::where('body', $post)->first();

        // If the post is not found, return a 404 response
        if (!$post) {
            return response()->json(['message' => 'Post not found'], Response::HTTP_NOT_FOUND);
        }

        // Retrieve all stores associated with this post
        $stores = $post->stores;

        // Prepare the response data
        $fields = $stores->map(function ($store) {
            return [
                'key'       => $store->key,
                'values'    => $store->values,
                'created'   => $store->created_at,
                'updated'   => $store->updated_at
            ];
        });

        // Return the JSON response with the fields
        return response()->json(['fields' => $fields], Response::HTTP_OK);
    }

    public function storePost(Request $request) {
        // Validate the request body
        $request->validate([
            'body' => 'required|uuid', // Ensure the body is a valid UUID
        ]);

        // Check if a post with the same UUID already exists
        $existingPost = Post::where('body', $request->body)->first();

        if ($existingPost) {
            // Return a 409 Conflict response if the post already exists
            return response()->json(['message' => 'Post with this UUID already exists'], Response::HTTP_CONFLICT);
        }

        // Create a new post
        $post = Post::create([
            'body' => $request->body,
        ]);

        // Return a 201 Created response with the created post
        return response()->json(['message' => 'Post created successfully', 'post' => $post], Response::HTTP_CREATED);
    }

    public function deletePost($post) {
        // Retrieve the post by the 'body' column (UUID)
        $post = Post::where('body', $post)->first();

        // If the post is not found, return a 404 response
        if (!$post) {
            return response()->json(['message' => 'Post not found'], Response::HTTP_NOT_FOUND);
        }

        // Delete the post
        $post->delete();

        // Return a 200 OK response with a success message
        return response()->json(['message' => 'Post deleted successfully'], Response::HTTP_OK);
    }

    public function createOrUpdatePostStore(Request $request) {
        // Validate the input
        $validator = Validator::make($request->all(), [
            'body' => 'required|uuid', // Ensure body is a valid UUID
            'key' => 'required|string|max:255', // Ensure key is a string
            'value' => 'required|json', // Ensure value is a valid JSON string
        ]);

        // If validation fails, return a 422 response with errors
        if ($validator->fails()) {
            return response()->json(['errors' => $validator->errors()], Response::HTTP_UNPROCESSABLE_ENTITY);
        }

        // Retrieve or create the post
        $post = Post::firstOrCreate(
            ['body' => $request->body], // Search by body (UUID)
            ['body' => $request->body]  // Create data if not exists
        );

        // Retrieve or create the store
        $store = Store::updateOrCreate(
            ['post_id' => $post->id, 'key' => $request->key], // Search by post_id and key
            ['values' => $request->value] // Create or update data
        );

        // Return a success response
        return response()->json([
            'message' => 'Post and store processed successfully',
            'post' => $post,
            'store' => $store,
        ], Response::HTTP_OK);
    }
}