<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use App\Models\MasterPitStopPraAkre;
use App\Models\PraAkre;

class PitStopController extends Controller
{
    public function pitstop(){
        $masterPitStop = MasterPitStopPraAkre::where('statusenabled', true)->get();
        $data = [
            'title' => 'Pit Stop',
            'masterPitStop' => $masterPitStop
        ];
        return view('pitstop.index', $data);
    }

    public function progress(Request $request)
    {
        $q = trim((string) $request->query('q', ''));
        $perPage = (int) $request->query('per_page', 20);
        if ($perPage < 1) $perPage = 20;
        if ($perPage > 100) $perPage = 100;

        $totalSteps = (int) MasterPitStopPraAkre::where('statusenabled', true)->count();

        $baseQuery = DB::connection('pgsql')
            ->table('public.pegawai_m as pg')
            ->leftJoin('public.praakre as p', 'p.pegawai_id', '=', 'pg.id')
            ->leftJoin('public.masterpitstop as m', function ($join) {
                $join->on(DB::raw('m.id::text'), '=', 'p.masterpitstop_id')
                    ->where('m.statusenabled', true);
            })
            ->where('pg.statusenabled', true)
            ->where('pg.kedudukanfk', 1)
            ->when($q !== '', function ($query) use ($q) {
                $query->where('pg.namalengkap', 'ILIKE', "%{$q}%");
            })
            ->select([
                'pg.id',
                DB::raw("coalesce(pg.namalengkap, '-') as nama"),
                DB::raw("count(distinct m.id) filter (where p.status='lulus') as lulus_count"),
            ])
            ->groupBy('pg.id', 'pg.namalengkap')
            ->orderByDesc('lulus_count')
            ->orderBy('pg.namalengkap');

        $users = $baseQuery->paginate($perPage)->appends(['q' => $q, 'per_page' => $perPage]);

        $totalUsers = $users->total();
        $totalSelesai = DB::connection('pgsql')
            ->table('public.praakre as p')
            ->leftJoin('public.masterpitstop as m', function ($join) {
                $join->on(DB::raw('m.id::text'), '=', 'p.masterpitstop_id')
                    ->where('m.statusenabled', true);
            })
            ->where('p.status', 'lulus')
            ->whereNotNull('m.id')
            ->select(DB::raw('count(distinct (p.pegawai_id, m.id)) as c'))
            ->value('c');

        if ($request->boolean('ajax')) {
            return response()->json([
                'error' => 0,
                'data' => [
                    'totalUsers' => $totalUsers,
                    'table_html' => view('pitstop.partials.progress_rows', [
                        'users' => $users,
                        'totalSteps' => $totalSteps,
                    ])->render(),
                    'pager_html' => view('pitstop.partials.progress_pager', [
                        'users' => $users,
                    ])->render(),
                ],
            ]);
        }

        return view('pitstop.progress', [
            'title' => 'Dashboard Progress',
            'q' => $q,
            'perPage' => $perPage,
            'totalSteps' => $totalSteps,
            'totalUsers' => $totalUsers,
            'totalSelesai' => $totalSelesai,
            'users' => $users,
        ]);
    }

    public function progressDetail(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'pegawai_id' => 'required|integer|exists:pgsql.public.pegawai_m,id',
        ]);

        if ($validator->fails()) {
            return response()->json([
                'error' => 1,
                'message' => 'Validasi gagal.',
                'errors' => $validator->errors(),
            ], 422);
        }

        $pegawaiId = (int) $validator->validated()['pegawai_id'];

        $rows = DB::connection('pgsql')
            ->table('public.praakre as p')
            ->leftJoin('public.masterpitstop as m', function ($join) {
                $join->on(DB::raw('m.id::text'), '=', 'p.masterpitstop_id')
                    ->where('m.statusenabled', true);
            })
            ->where('p.pegawai_id', $pegawaiId)
            ->whereNotNull('m.id')
            ->select([
                'p.id',
                'p.masterpitstop_id',
                DB::raw("coalesce(m.nama, '-') as step_nama"),
                'p.status',
                DB::raw("to_char(p.created_at, 'YYYY-MM-DD HH24:MI:SS') as created_at"),
            ])
            ->orderByDesc('p.id')
            ->limit(500)
            ->get();

        return response()->json([
            'error' => 0,
            'data' => $rows,
        ]);
    }

    public function pegawaiSteps(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'pegawai_id' => 'required|integer|exists:pgsql.public.pegawai_m,id',
        ]);

        if ($validator->fails()) {
            return response()->json([
                'error' => 1,
                'message' => 'Validasi gagal.',
                'errors' => $validator->errors(),
            ], 422);
        }

        $pegawaiId = (int) $validator->validated()['pegawai_id'];

        $lockedSteps = PraAkre::where('pegawai_id', $pegawaiId)
            ->where('status', 'lulus')
            ->distinct()
            ->pluck('masterpitstop_id');

        return response()->json([
            'error' => 0,
            'data' => [
                'locked_steps' => $lockedSteps,
            ],
        ]);
    }

    public function submit(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'karyawan_id' => 'required|integer|exists:pgsql.public.pegawai_m,id',
            'step' => 'required',
            'status' => 'required|in:lulus,tidak_lulus',
            'unit_id' => 'nullable|string|max:15',
        ]);

        if ($validator->fails()) {
            return response()->json([
                'error' => 1,
                'message' => 'Validasi gagal.',
                'errors' => $validator->errors(),
            ], 422);
        }

        $payload = $validator->validated();

        $pegawaiId = (int) $payload['karyawan_id'];
        $masterPitstopId = (string) $payload['step'];

        $alreadyPassed = PraAkre::where('pegawai_id', $pegawaiId)
            ->where('masterpitstop_id', $masterPitstopId)
            ->where('status', 'lulus')
            ->exists();

        if ($alreadyPassed) {
            return response()->json([
                'error' => 1,
                'message' => 'Step ini sudah lulus dan terkunci.',
            ], 409);
        }

        $row = PraAkre::create([
            'pegawai_id' => $pegawaiId,
            'masterpitstop_id' => $masterPitstopId,
            'unit_id' => $payload['unit_id'] ?? null,
            'status' => $payload['status'],
            'created_at' => now(),
        ]);

        return response()->json([
            'error' => 0,
            'message' => 'Data berhasil disimpan.',
            'data' => [
                'id' => $row->id,
                'pegawai_id' => $row->pegawai_id,
                'masterpitstop_id' => $row->masterpitstop_id,
                'status' => $row->status,
            ],
        ]);
    }

}