<?php

namespace App\Http\Controllers;

use App\Models\StaffMember;
use App\Models\Department;
use App\Models\Country;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Storage;
use Carbon\Carbon;


class StaffMembersController extends Controller
{
    public function index(Request $request)
    {
        $query = StaffMember::query();

        // 1. Search Filter
        if ($request->filled('search')) {
            $search = $request->search;
            $query->where(function($q) use ($search) {
                $q->where('name', 'like', "%{$search}%")
                  ->orWhere('email', 'like', "%{$search}%")
                  ->orWhere('designation', 'like', "%{$search}%")
                  ->orWhere('phone', 'like', "%{$search}%");
            });
        }

        // 2. Department Filter
        if ($request->filled('department_id')) {
            $query->where('department_id', $request->department_id);
        }

        // 3. Status Filter
        if ($request->filled('status')) {
            $query->where('status', $request->status);
        }

        $staffMembers = $query->orderBy('name', 'asc')->paginate(12);
        $staffMembers->appends($request->query());

        // Fetch dynamic dropdown lists
        $departments = Department::orderBy('name', 'asc')->get();
        $countries = Country::orderBy('en_short_name', 'asc')->get();

        $data = [
            'staffMembers' => $staffMembers,
            'departments'  => $departments,
            'countries'    => $countries,
        ];

        return view('staff.index', $data);
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'name'             => 'required|string|max:200',
            'designation'      => 'required|string|max:191',
            'email'            => 'required|email|max:200',
            'phone'            => 'nullable|string|max:200',
            'department_id'    => 'required|integer',
            'location_country' => 'nullable|string|max:191',
            'status'           => 'required|string|max:20',
            'photo'            => 'nullable|image|mimes:jpg,jpeg,png|max:2048',
        ]);

        if ($request->hasFile('photo')) {
            $validated['profile_pic'] = $request->file('photo')->store('staff_profiles', 'public');
        }

        $validated['created_by'] = auth()->id() ?? 1;
        $validated['password']   = Hash::make('default_password');
        $validated['hire_date']  = now();

        StaffMember::create($validated);

        return response()->json(['success' => true, 'message' => 'Staff member added successfully!']);
    }

    public function update(Request $request, $id)
    {
        $staff = StaffMember::findOrFail($id);

        $validated = $request->validate([
            'name'             => 'required|string|max:200',
            'designation'      => 'required|string|max:191',
            'email'            => 'required|email|max:200',
            'phone'            => 'nullable|string|max:200',
            'department_id'    => 'required|integer',
            'location_country' => 'nullable|string|max:191',
            'status'           => 'required|string|max:20',
            'photo'            => 'nullable|image|mimes:jpg,jpeg,png|max:2048',
        ]);

        if ($request->hasFile('photo')) {
            if ($staff->profile_pic && Storage::disk('public')->exists($staff->profile_pic)) {
                Storage::disk('public')->delete($staff->profile_pic);
            }
            $validated['profile_pic'] = $request->file('photo')->store('staff_profiles', 'public');
        }

        $validated['modified_by'] = auth()->id() ?? 1;

        $staff->update($validated);

        return response()->json(['success' => true, 'message' => 'Staff member updated successfully!']);
    }

    public function destroy($id)
    {
        $staff = StaffMember::findOrFail($id);
        
        if ($staff->profile_pic && Storage::disk('public')->exists($staff->profile_pic)) {
            Storage::disk('public')->delete($staff->profile_pic);
        }
        
        $staff->delete();

        return redirect()->back()->with('success', 'Staff member removed.');
    }


    public function getUpcomingBirthdays()
    {
        $today = Carbon::now();
        $thirtyDaysFromNow = Carbon::now()->addDays(30);

        $currentMonthDay = $today->format('m-d');
        $futureMonthDay = $thirtyDaysFromNow->format('m-d');

        if ($currentMonthDay <= $futureMonthDay) {
            // Simple range check within the same calendar year
            $upcomingStaff = StaffMember::whereBetween('dob', [$currentMonthDay, $futureMonthDay])
                ->orderBy('dob', 'asc')
                ->get();
        } else {
            // Handles the year-end crossover (e.g., looking from December into January)
            $upcomingStaff = StaffMember::where(function($query) use ($currentMonthDay, $futureMonthDay) {
                    $query->where('dob', '>=', $currentMonthDay)
                          ->orWhere('dob', '<=', $futureMonthDay);
                })
                ->orderBy('dob', 'asc')
                ->get();
        }

        return $upcomingStaff;
    }
}