<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Spatie\RouteAttributes\Attributes\Delete;
use Spatie\RouteAttributes\Attributes\Get;
use Spatie\RouteAttributes\Attributes\Middleware;
use Spatie\RouteAttributes\Attributes\Patch;
use Spatie\RouteAttributes\Attributes\Post;

#[Middleware('web')]
class BatchJobController extends Controller
{
    private function db()
    {
        return DB::connection('db_markitdown');
    }

    #[Get('/batch-jobs')]
    public function index()
    {
        $jobs = $this->db()->table('batch_jobs')
            ->orderByDesc('created_at')
            ->limit(20)
            ->get()
            ->map(fn($j) => [
                'id'          => $j->id,
                'dir_name'    => $j->dir_name,
                'dir_path'    => $j->dir_path,
                'output_base' => $j->output_base,
                'total'       => $j->total,
                'done_count'  => $j->done_count,
                'finished'    => (bool)$j->finished,
                'settings'    => json_decode($j->settings, true),
                'created_at'  => $j->created_at,
            ]);

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

    #[Post('/batch-jobs')]
    public function store(Request $request)
    {
        $data = $request->validate([
            'dir_path'    => 'required|string',
            'dir_name'    => 'required|string',
            'output_base' => 'nullable|string',
            'settings'    => 'nullable|array',
            'files'       => 'required|array',
        ]);

        $id = $this->db()->table('batch_jobs')->insertGetId([
            'dir_path'    => $data['dir_path'],
            'dir_name'    => $data['dir_name'],
            'output_base' => $data['output_base'] ?? null,
            'settings'    => json_encode($data['settings'] ?? []),
            'files'       => json_encode($data['files']),
            'results'     => json_encode((object)[]),
            'total'       => \count($data['files']),
            'done_count'  => 0,
            'finished'    => false,
            'created_at'  => now(),
            'updated_at'  => now(),
        ]);

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

    #[Get('/batch-jobs/{id}')]
    public function show(int $id)
    {
        $job = $this->db()->table('batch_jobs')->where('id', $id)->first();
        if (!$job) return response()->json(['error' => 'Not found'], 404);

        return response()->json([
            'id'          => $job->id,
            'dir_path'    => $job->dir_path,
            'dir_name'    => $job->dir_name,
            'output_base' => $job->output_base,
            'settings'    => json_decode($job->settings, true),
            'files'       => json_decode($job->files, true),
            'results'     => json_decode($job->results, true),
            'total'       => $job->total,
            'done_count'  => $job->done_count,
            'finished'    => (bool)$job->finished,
            'created_at'  => $job->created_at,
        ]);
    }

    #[Patch('/batch-jobs/{id}')]
    public function update(Request $request, int $id)
    {
        $job = $this->db()->table('batch_jobs')->where('id', $id)->first();
        if (!$job) return response()->json(['error' => 'Not found'], 404);

        $results   = json_decode($job->results, true) ?? [];
        $path      = $request->input('path');
        $entry     = $request->input('entry', []);
        $done      = $request->boolean('finished', false);

        if ($path && $entry) {
            $results[$path] = $entry;
        }

        $doneCount = \count(array_filter($results, fn($r) => isset($r['md']) || isset($r['dl'])));

        $this->db()->table('batch_jobs')->where('id', $id)->update([
            'results'    => json_encode($results),
            'done_count' => $doneCount,
            'finished'   => $done,
            'updated_at' => now(),
        ]);

        return response()->json(['ok' => true, 'done_count' => $doneCount]);
    }

    #[Delete('/batch-jobs/{id}')]
    public function destroy(int $id)
    {
        $this->db()->table('batch_jobs')->where('id', $id)->delete();
        return response()->json(['ok' => true]);
    }
}