<?php

declare(strict_types=1);

namespace App\Http\Controllers\PromptProject;

use App\Http\Controllers\Controller;
use App\Http\Requests\PromptProject\StorePromptProjectRequest;
use App\Http\Requests\PromptProject\UpdatePromptProjectRequest;
use App\Models\AiModel;
use App\Models\AiProvider;
use App\Models\PromptGeneration;
use App\Models\PromptProject;
use App\Services\PromptProjectService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\View\View;

class PromptProjectController extends Controller
{
    /**
     * Create a new controller instance.
     */
    public function __construct(
        private readonly PromptProjectService $promptProjectService
    ) {}

    /**
     * Display a listing of the resource.
     */
    public function index(): View
    {
        $result = $this->promptProjectService->index();
        $projects = $result['data'] ?? [];

        return view('prompt-projects.index', compact('projects'));
    }

    /**
     * Show the form for creating a new resource.
     */
    public function create(): View
    {
        $this->authorize('create', \App\Models\PromptProject::class);

        $providers = AiProvider::where('is_active', true)->get();

        return view('prompt-projects.create', compact('providers'));
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(StorePromptProjectRequest $request): RedirectResponse
    {
        $this->authorize('create', \App\Models\PromptProject::class);

        $this->promptProjectService->store($request->validated());

        return redirect()->route('prompt-projects.index')
            ->with('success', 'Project created successfully.');
    }

    /**
     * Display the specified resource.
     */
    public function show(PromptProject $promptProject): View
    {
        $this->authorize('view', $promptProject);

        $providerModels = AiModel::where('provider_id', $promptProject->provider_id)
            ->where('is_active', true)
            ->get();

        $models = $providerModels->isNotEmpty()
            ? $providerModels
            : AiModel::where('is_active', true)->get();

        $generations = PromptGeneration::where('project_id', $promptProject->id)
            ->latest()
            ->take(5)
            ->get();

        $standardFiles = $this->promptProjectService->getStandardFiles($promptProject);

        return view('prompt-projects.show', compact('promptProject', 'models', 'generations', 'standardFiles'));
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(\App\Models\PromptProject $promptProject): View
    {
        $this->authorize('update', $promptProject);

        $providers = AiProvider::where('is_active', true)->get();

        return view('prompt-projects.edit', compact('promptProject', 'providers'));
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(UpdatePromptProjectRequest $request, \App\Models\PromptProject $promptProject): RedirectResponse
    {
        $this->authorize('update', $promptProject);

        $this->promptProjectService->update($promptProject, $request->validated());

        return redirect()->route('prompt-projects.show', $promptProject)
            ->with('success', 'Project updated successfully.');
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(\App\Models\PromptProject $promptProject): RedirectResponse
    {
        $this->authorize('delete', $promptProject);

        $this->promptProjectService->destroy($promptProject);

        return redirect()->route('prompt-projects.index')
            ->with('success', 'Project deleted successfully.');
    }

    /**
     * Generate prompt for the specified project.
     */
    public function generate(PromptProject $promptProject, Request $request): RedirectResponse
    {
        $this->authorize('update', $promptProject);

        $model = null;
        if ($request->filled('model')) {
            $modelSlug = $request->input('model');

            if ($modelSlug === 'outros') {
                $customModel = $request->input('custom_model');
                if ($customModel) {
                    $model = $customModel;
                }
            } else {
                $model = AiModel::where('slug', $modelSlug)
                    ->where('is_active', true)
                    ->first();
            }
        }

        $this->promptProjectService->generate($promptProject, $model, Auth::id());

        return redirect()->route('prompt-projects.show', $promptProject)
            ->with('success', 'Prompt generated successfully.');
    }

    /**
     * Get built prompt for the specified project.
     */
    public function getPrompt(PromptProject $promptProject): JsonResponse
    {
        $this->authorize('view', $promptProject);

        $prompt = $this->promptProjectService->buildPrompt($promptProject);

        return response()->json(['prompt' => $prompt]);
    }

    /**
     * Get standard files for the specified project.
     */
    public function getStandardFiles(PromptProject $promptProject): JsonResponse
    {
        $this->authorize('view', $promptProject);

        $files = $this->promptProjectService->getStandardFiles($promptProject);

        return response()->json($files);
    }

    /**
     * Download a standard file for the specified project.
     */
    public function downloadFile(PromptProject $promptProject, string $filename)
    {
        $this->authorize('view', $promptProject);

        $files = $this->promptProjectService->getStandardFiles($promptProject);

        if (!isset($files[$filename])) {
            abort(404);
        }

        $content = $files[$filename];

        return response()->streamDownload(function () use ($content) {
            echo $content;
        }, $filename);
    }
}